Main Refer

B Morrison / Feb 2010 / Rev 0

GUIDELINE

Document Classification: Controlled Disclosure

Title: Distribution Guide – Part 18 TELECONTROL: D20 CONFIGURATION GUIDE – GENERAL SETTINGS

Unique Identifier: 34-1990 Document Type: DGL Revision: 0

Published date: FEBRUARY 2010

Total pages: 40 Review date: FEBRUARY 2015

COMPILED BY APPROVED BY FUNCTIONAL RESP AUTHORISED BY

_ _ _ _ _ _

T RAMULONDI

_ _ _ _ _ _ _

S MBANGA

_ _ _ _2009/08/27

PR GROENEWALD

SIGNED

_ _ _ _ _ _ _

MN BAILEY EDNS Technology (NWR) Telecontrol SC

Chairman for TESCOD CMDT for MD (Dx)

Content

Page Foreword .............................................................................................................................................. 2 Introduction .......................................................................................................................................... 2 1 Scope .......................................................................................................................................... 3 2 Normative references .................................................................................................................. 3 3 Definitions and abbreviations ...................................................................................................... 3

3.1 Definitions ............................................................................................................................... 3 3.2 Abbreviations .......................................................................................................................... 3

4 D20 Configuration – General Settings ........................................................................................ 4 4.1 Data Collection Application (DCA).......................................................................................... 4 4.2 Data Translation Application ................................................................................................. 23 4.3 Data Processing Application ................................................................................................. 28 4.4 Summary .............................................................................................................................. 34

5 Tests ......................................................................................................................................... 35 6 Marking, labeling and packaging .............................................................................................. 35 7 Spares ....................................................................................................................................... 35 Annex A - Impact assessment ........................................................................................................... 36 Annex B – Analogue Scaling ............................................................................................................. 40

DOCUMENT CLASSIFICATION: CONTROLLED DISCLOSURE TELECONTROL: D20 CONFIGURATION GUIDE – GENERAL SETTINGS

Unique Identifier: 34-1990 Type: DGL Revision: 0 Page: 2 of 40

When downloaded from the DT WEB, this document is uncontrolled and the responsibility rests with the user to ensure it is in line with the authorised version on the WEB.

Foreword

This guide describes the basic settings to be configured using Config Pro™ to ensure optimal operation of the GE D20 Telecontrol RTU.

Revision history

This is a new document.

Date Rev. Clause Remarks

Feb 2010 0 - Compiled By: T Ramulondi, S Mbanga and M Pillay

- First Issue.

Authorisation This document has been seen and accepted by:

Name Designation

MN Bailey Corporate Manager – Divisional Technology

PR Groenewald Technology Development Manager - Control Technologies

S Mbanga Telecontrol Study Committee Chairman

This document shall apply throughout Eskom Distribution.

Development team Name Designation

Marlini Pillay IARC Control Technologies

Thendo Ramulondi EDNS Technology: North West Region

Simphiwe Mbanga EDNS Technology: Southern Region

Introduction

The GE D20 Remote Terminal Unit (RTU) is an approved product used by the Eskom Distribution Business. The purpose of this document is to provide a guideline on the general settings of the GE D20 RTU. This guideline does not include the configuration of the RTU for serial communications to Intelligent Electronic Devices (IEDs). This is covered in the D20 Configuration Settings for communications to DNP3 IEDs. It is essential that personnel using this guide have a basic understanding of Config Pro™. GE D20 RTU manuals can be consulted for further information on the D20 settings.

Keywords

Telecontrol, D20, RTU, Config Pro™, DCA, DPA, DTA.

Bibliography

1. IST GE D20 Course Manuals 2. GE D20 Software Reference Documents:

a) B015 – Bridgeman Configuration c) B013 – DNP V3.00 Data Link Configuration b) B003 – Peripheral Link Configuration d) B021 – DNP V3.00 DCA Configuration

3. DGL_34-1793: D20 Configuration Settings for communications to DNP3 IEDs




1 Scope

The purpose of this document is to provide a guideline on the general settings of the GE D20 RTU. This guideline does not include the configuration of the RTU for serial communications to Intelligent Electronic Devices (IEDs) which is dealt with in the D20 Configuration Settings for Communications to DNP3 IEDs Guideline (DGL_34–1793). It is essential that personnel using this guide have a basic understanding of Config Pro™. GE D20 RTU manuals can be consulted for further information on the D20 configuration settings.

A Config Pro™ configuration template can be created with the settings recommended in this document. This template can thus be used as a foundation for all D20 RTU configurations.

2 Normative references

The following document contains provisions that, through reference in the text, constitute requirements of this standard. At the time of publication, the edition indicated was valid. All controlled documents are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent edition of the documents listed below. Information on currently valid national and international standards and specifications can be obtained from the Information Centre and Eskom Documentation Centre at Megawatt Park.

DST_34-401: DNP3 Addressing Standard

DST_34-897: Telecontrol DNP3 Class Allocation Standard

3 Definitions and abbreviations

3.1 Definitions

DNP3: Telecontrol communications protocol

3.2 Abbreviations

BCD: Binary Coded Decimal

CTS: Clear to Send

DCA: Data Collection Application

DCD: Data Carrier Detect

DI: Digital Input

DTA: Data Translation Application

DPA: Data Processing Application

DRTU: Distribution Remote Terminal Unit

GE: General Electric

GPRS: General Packets Radio Service

HLDC: High Level Data Link

IED: Intelligent Electronic Device




I/O: Input /Output

LAN: Local Area Network

LAT: Local Application Table

MSB: Most Significant Bit

NACK: Not Acknowledge

PMRTU: Pole Mounted Remote Terminal Unit

RAT: Remote Application Table

RTS: Request to Send

RTU: Remote Terminal Unit

SMART: Standard Master for Regional Telecontrol

SPD: System Point Database

STC: Signal Termination Cards

UHF: Ultra High Frequency

UR: Unsolicited Response

WIN: Wesdac Interface Node

4 D20 Configuration – General Settings

4.1 Data Collection Application (DCA)

4.1.1 Peripheral Modules - General

The peripheral modules are responsible for the actual data acquisition. They interface directly to the external devices. Communications to the main processor of the D20 is achieved via the D.20 Link. As indicated by the GE Services D20 Guide (See Bibliography), “The D20 peripheral I/O modules provide specialized processing and storing/buffering functions for digital inputs, Analogue inputs, control outputs, Analogue outputs, pulse accumulator inputs and combinations of the above, by gathering data from field sources or acting as an output unit to interface with field devices.”

There are four peripheral I/O modules available for the D20 RTU namely:

• D20A Analogue Input Card (32 Analogue inputs)

• D20S Digital Input Card (64 digital inputs)

• D20K Control Output Card (32 digital outputs)

• D20C Combination Input/Output Card (16 count digital inputs, 8 trip/close control outputs and 16 Analogue inputs or 8 Analogue inputs and 8 Analogue outputs.

These peripheral modules are regarded as Data Collection Applications. These applications poll various devices to collect data.




Config Pro™ software is used to configure the settings on these peripheral modules. The settings for each peripheral card can be viewed and edited by double clicking the D.20 Peripheral Link icon as indicated in Figure 1.

Figure 1: Config Pro™ 5.03 screen displaying the D.20 Peripheral Link

On double clicking this icon, the peripheral modules found on that specific D20 RTU is indicated. The Config Pro™ screen demonstrating this view is shown in Figure 2. The settings of each peripheral can be accessed from these icons.




Figure 2: Config Pro™ 5.03 screen displaying the D.20 Peripheral Modules

The configuration settings of each of the different peripheral cards are presented in the sections to follow.

4.1.2 Peripheral D20A – (Analogue Input Points)

4.1.2.1 General

Figure 3: Config Pro™ 5.03 screen displaying the General Settings for D20A Card




Table 1: D20A peripheral board settings (General)

D20A Peripheral Board Settings Table

Settings Name Settings Options Description GE Default Value Eskom

Value Reason for Selection of

Setting Value

Information

Peripheral Type WESDAC D20A

This setting indicates the type of peripheral board and cannot be changed by the user.

- Cannot be Changed -

Termination Board

No Termination Board WESTERM D20A WESTERM D20AD WESTERM D20OAD WESTERM D20AZ WESTERM D20AB WESTERM D10 A

This setting indicates the termination board on which the D20 Analogue card will be terminated.

- Generally use

WESTERM D20A

-

Description To be entered by user A user defined description describing the card

-

e.g. D20A Analogue

Input Peripheral (32

AI)

-

Cabinet Number To be entered by user

A user defined description indicating in which RTU cabinet this particular peripheral card is based

- User Defined -

Rack Position To be entered by user

A user defined description indicating in which cabinet rack this particular peripheral card is based

- User Defined -

Communication Parameters

Time Out (ms) 0 to 65535

Length of time the D.20 Peripheral Link application waits for a response after polling the peripheral board.

21 21 GE

Recommended Value

Retries 0 to 32767

Maximum number of times the D.20 Peripheral Link application tries to consecutively poll the peripheral after it detects a failure.

3 3 GE

Recommended Value

Scan Priority (ms) 1 to 10

The number of times the D.20 Peripheral Link application scans the peripheral board. Increments of 100ms

1 1 GE

Recommended Value




4.1.2.2 I/O Configuration

Figure 4: Config Pro™ 5.03 screen displaying I/O Configuration settings for a D20A Card

The scaling parameters i.e. D20M High Scale, D20M Low Scale, Peripheral High Scale and Peripheral Low Scale, are utilised to return a scaled value to the System Point Database Application, The equation used to calculate this scaled value is shown below.

( )( )( )ScaleLowPeripheral-ScaleHighPeripheral

ScaleLowPeripheral-ValueInputAnalogueRawScaleLowD20MScaleHighD20MValueScaled

−=




Table 2: D20A peripheral board settings (I/O Settings)

D20A Peripheral Board I/O Settings

Settings Name Settings Options Description GE Default

Value Eskom Value

Reason for Selection of

Setting Value

Description To be

entered by user

Information of the field point. This description will also appear in WESMAINT

User Defined

User Defined -

Scan Enable Yes or No Indicates if the particular point must be scanned and its value sent to the RTU

Yes Yes GE

Recommended Value

Range Select (V) 0±1V, 0±5V, 0±10V

Specifies the maximum positive and negative full scale voltage to be applied to the input point

0±5V 0±5V GE

Recommended Value

Report Deadband 0 to 13

Specify the least significant bits of the Analogue value that must change before the application reports the value to the system point database. (2^n)

4 4 GE

Recommended Value

D20M High Scale (%) 0 to 100

Maximum value to return to the system point database, as a percentage of 32767.

100 100 GE

Recommended Value

D20M Low Scale (%) 0 to -100

Minimum value to return to the system point database, as a percentage of 32767.

-100 -100 GE

Recommended Value

Peripheral High Scale (%) 0 to 100 Maximum value expected from

the Analogue input peripheral 100 100 GE

Recommended Value

Peripheral Low Scale (%) 0 to -100 Minimum value expected from

the Analogue input peripheral -100 -100 GE

Recommended Value

4.1.2.3 Advanced Settings

Figure 5: Config Pro™ 5.03 screen displaying the Advanced Settings for a D20A Card




Table 3: D20A peripheral board settings (Advanced)

D20A Peripheral Board Advanced Settings

Settings Name Settings Options Description GE Default

Value Eskom Value


Setting Value

Input Setting Time (μs) 0 to 3276

Length of time (in microseconds) the application allows an Analogue input signal to settle for before the application takes a sample.

500 500 GE

Recommended Value

Reference Check 20 to 255

The number of conversions of field inputs before the application updates the on board Analogue input reference.

100 100 GE

Recommended Value

Reference Deadband 0 to 32767

The allowable difference between the running references and the EPROM references before an error is generated.

256 256 GE

Recommended Value

Line Frequency (Hz) 50 or 60 Power Utility's Line Frequency 50 or 60 50 -

4.1.3 Peripheral D20S (Digital Input Points)

4.1.3.1 General

Figure 6: Config Pro™ 5.03 screen displaying the General settings page for a D20S Card




Table 4: D20S peripheral board settings (General)

D20S Peripheral Board General Settings

Settings Name Settings Options Description GE Default Value

Eskom Value


Setting ValueInformation

Peripheral Type WESDAC D20S



Termination Board

No Termination Board WESTERM D20S WESTERM D20SD WESTERM D20OSD WESTERM D20SZ WESTERM D20SZ2 WESTERM D10 S

This setting indicates on which termination board the D20 digital input card will be terminated.

- Generally use

WESTERM D20S

-

Description To be entered by user A user defined description describing the card -

e.g.D20S Digital Input

Peripheral (64 DI)

-



- User Defined -



- User Defined -




21 21 GE

Recommended Value

Retries 0 to 32767


3 3 GE

Recommended Value


The number of times the D.20 Peripheral Link application scans the peripheral board. Increments in 100ms

1 1 GE

Recommended Value





Figure 7: Config Pro™ 5.03 screen displaying I/O Configuration settings for a D20S Card




Table 5: D20S board settings (I/O configuration)

D20S Peripheral Board Settings Table

Settings Name

Settings Options Description GE Default

Value Eskom Value


Setting Value

Description To be entered by user

Information of the field point. This description will also appear in WESMAINT

User Defined User Defined -

Point Type

Single Point Double Point Transition Counters Form C Counter

Single Point: This type of point monitors change of state. The point is either ON of OFF. Double Point: Uses two separate digital inputs to represent four different states. Two of these states are valid and the other two are invalid. Transition Counter: This type of point counts every change of state - or transition Form C Counter: This type of point counts every valid double point transition.

Single Point Single Pt / Double Pt -

COS Yes or No If set to YES, allows a point to generate a change-of-state alarm in the RTUs COS archive/buffer. Volatile memory

- Yes -

SOE Yes or No

If set to YES, allows a point to generate time stamped change-of-state alarm in the RTU's SOE archive / buffer. Non volatile memory

- Yes -

Report Limit 0 to 255 times

Only applicable to accumulator inputs. Maximum number of counts that must occur before a report is sent to the RTU.

0 0

Tolerant Period (ms) 0 to 255

Specify the time period in first-level debouncing where the application allows changes in state (for contact bounce). It is a period during which contact bounce is "acceptable".

0 0 GE

Recommended Value

Intolerant Period (ms) 0 to 255

It is a period of time following the tolerant phase during which contact bounce is "unacceptable”. It ensures contact bounce is not mistaken for a valid change of state.

6 6 GE

Recommended Value

Valid Period (ms)

0 to 255 (in 256 ms

increments)

0 to 255 (in multiples of

10ms)

For a single point state/ Form A counter. Defines the period of time during which the point state must be ON. For a double point state/Form C counter. Defines the period of time (in multiples of 10ms) during which both points must be in a "valid" state.

0 Default = 0 Value as per

application (e.g. AC fail)

Invalid Period (ms)

0 to 255 (in 256 ms

increments)

0 to 255 (in multiples of

10ms)

For a single point state/ Form A counter. Defines the period of time during which the point state must be OFF. For a double point state/Form C counter. Defines the period of time (in multiples of 10ms) during which both points must be in an "invalid" state. (11 and 00)

0 Default = 0 Value as per

application (e.g. AC fail, breaker

states)

Transitions 0 to 255

Specify the maximum number of transitions in a filter period before turning ON digital input chatter filtering. (0 disables chatter filtering). If number of state transitions during a filter period equals or exceeds this value, the chatter filter turns ON

0 25

Safe number to pick up 50 cycles per

second. As was experienced with STC.





Settings Name


Value Eskom Value


Setting Value

Lock Out 0 to 255

Specify the number of filter periods before turning OFF the digital input chatter filtering. If 0, the chatter filter turns OFF if the number of transitions in one filter period is less than the maximum. If (1 to 255), the chatter filter turns OFF if there are no transitions in the number of filter periods that you specify here.

0 5

This means that the filter turns

off after 5 periods of chattering

4.1.3.3 Advanced

Figure 8: Config Pro™ 5.03 screen displaying the Advanced settings for a D20A Card

Table 6: D20S board settings (Advanced)


Settings Name


Value Eskom Value


Setting Value

Filter Period 0 to 65535 ms

Length of time used as the sample time window for chatter filtering. A non-zero value enables the chatter filter for all digital input points.

0 1000

Allows only 50 STC alarms to be transmitted before chatter filtering is initiated.




4.1.4 Peripheral D20K (Digital Output Points)

4.1.4.1 General

Figure 9: Config Pro™ 5.03 screen displaying the General Settings for a D20K Card

Table 7: D20K peripheral board settings (General)

D20K Peripheral Board Settings Table

Settings Name Settings Options Description

GE Default Value

Eskom Value


Setting Value Information

Peripheral Type WESDAC D20K



Termination Board

No Termination Board WESTERM D20K WESTERM D20KR WESTERM D20 OKR WESTERM D20K4Z WESTERM D20K WESTERM D10 KR

This setting indicates on which termination board the D20K Digital output card will be terminated.

-

Generally use WESTERM D20K

-


e.g. D20K Digital Output Peripheral (32 DO)

-



- User Defined -



- User Defined -





D20K Peripheral Board Settings Table


GE Default Value

Eskom Value


Setting Value



21 21 GE

Recommended Value

Retries 0 to 32767


3 3 GE

Recommended Value


The number of times the D.20 Peripheral Link application scans the peripheral board. Increments in 100ms

1 1 GE

Recommended Value


Figure 10: Config Pro™ 5.03 screen displaying the I/O Configuration Settings for a D20K Card




Table 8: D20K peripheral board settings (I/O Configuration)

D20K Peripheral Board I/O Configuration Settings

Settings Name


Value Eskom Value


Setting Value

R/L Point To be entered by user

List of pairs of raise / lower point numbers associated with the output points. These numbers cannot be changed.

N/A N/A -

Description To be entered by user

User description of the point. This will appear on the WESMAINT N/A User

Defined -

Termination Type

Trip/Close

Raise/Lower

Form C

Open Collector

Defines the configuration of the termination board. A type of digital output that turns something on and off using a master relay and a select relay.

Trip/Close Trip/Close

Relay Type XXXXXX Type of relay used to terminate the point. Only for KI DB25 Boards N/A N/A -

Reset on Start Up Yes or No

Determines if a latched relay is automatically reset when the RTU starts up.

No No GE

Recommended Value

4.1.4.3 Advanced Settings

Figure 11: Config Pro™ 5.03 screen displaying the Advanced Settings for a D20K Card




Table 9: D20K peripheral board settings (Advanced)

D20K Peripheral Board Advanced Settings Table


GE Default Value

Eskom Value


Setting Value

Select Time (ms) 1 to 255

The amount of time the select relay will operate prior to the master trip or master close relay (Select before operate)

10 10 GE

Recommended Value

Clear Time (ms) 1 to 255 The amount of time the select relay will remain ON after the master trip or master close relay operated

10 10 GE

Recommended Value

Control Arm Time Out (ms) 100 to 255

The amount of time a K board will wait for an execute command (from RTU) after receiving an arm command.

100 100 GE

Recommended Value

Retry Time (ms) 1 to 255 The amount of time the D20K will wait and restart after a shutdown has taken place

10 10 GE

Recommended Value

Retry Attempts 0 to 255 The amount of times that a D20K will try to restart after a failure. 0 0

GE Recommended

Value

Communication Fail Time Out (ms)

0 to 65535

Length of time the D.20 Peripheral Link application waits for communication over the HDLC link before shutting down all the relays. 0 ms (disabled).

0 0 GE

Recommended Value

4.1.5 Peripheral D20C (Digital Input/Output Analogue Inputs/Outputs)

4.1.5.1 General

Figure 12: Config Pro™ 5.03 screen displaying the General Settings for a D20 C Card




Table 10: D20C peripheral board settings (General)

D20C Peripheral Board General Settings

Settings Name Settings Options Description GE

Default Value

Eskom Value


Setting Value

Peripheral Type WESDAC D20 C

This setting indicates the type of peripheral board and cannot be

changed by the user. - Cannot be

Changed -

Termination Board

No Termination Board WESTERM D20 C WESTERM D20 CD WESTERM D20 C4Z WESTERM D20 C4Z2 WESTERM D20 CB WESTERM D10 C WESTERM D20 CDI

This setting indicates on which termination board the D20C

Combo card will be terminated. -

Generally use

WESTERM D20 C

-


e.g. D20 C Combo

Peripheral -


A user defined description indicating in which RTU cabinet this particular peripheral card is

based

- User Defined -


A user defined description indicating in which cabinet rack this particular peripheral card is

based

- User Defined -




21 21 GE

Recommended Value

Retries 0 to 32767


3 3 GE

Recommended Value


The number of times the D.20 Peripheral Link application scans the peripheral board. Increments of 100ms

1 1 GE

Recommended Value





Figure 13: Config Pro™ 5.03 screen displaying the I/O Config Settings for a D20 C Card – Digital

Figure 14: Config Pro™ 5.03 screen displaying the I/O Config Settings for a D20 C Card – Digital Outputs




Figure 15: Config Pro™ 5.03 screen displaying the I/O Config Settings for a D20 C Card – Analogue Inputs

Table 11: D20C peripheral board settings (I/O Configuration)

D20C Peripheral Board General Settings


Default Value

Eskom Value


Setting Value

Digital Inputs See D20S Settings

Digital Outputs See D20K Settings

Analogue Inputs See D20A Settings

Analogue Outputs Description XXXXXX Only available with C2 card N/A N/A -

Into Value XXXXXX Only available with C2 card N/A N/A -

Output Mode XXXXXX Only available with C2 card N/A N/A -




4.1.5.3 Advanced

Figure 16: Config Pro™ 5.03 screen displaying the Advanced Settings for a D20 C Card

Table 12: D20C peripheral board settings (Advanced)

D20C Peripheral Board Advanced Settings


Default Value

Eskom Value


Setting Value

Input Setting Time (μs) 0 to 32767

Length of time (in microseconds) the application allows an Analogue input signal to settle for before the application takes a sample.

500 500

Reference Check 20 to 255

The number of conversions of field inputs before the application updates the on board Analogue input reference.

100 100 GE

Recommended Value

Reference Deadband 0 to 32767

The allowable difference between the running references and the EPROM references before an error is generated.

256 256

Line Frequency (Hz) 50 or 60 Power Utility’s Line Frequency 50 or 60 50 -

Filter Period (ms) 0 to 65535

Length of time used as the sample time window for chatter filtering. A non-zero value enables the chatter filter for all digital input points.

0 1000 GE

Recommended Value




D20C Peripheral Board Advanced Settings


Default Value

Eskom Value


Setting Value

Select Time (ms) 1 to 255

The amount of time the select relay will operate prior to the master trip or master close relay

10 10 GE

Recommended Value

Clear Time (ms) 1 to 255

The amount of time the select relay will remain ON after the master trip or master close relay operated

10 10 GE

Recommended Value

Control Arm Time Out (ms) 100 to 255

The amount of time a K board will wait for an execute command (from RTU) after receiving an arm command.

100 100 GE

Recommended Value

Retry Time (ms) 1 to 255 The amount of time the D20K will wait and restart after a shutdown has taken place

10 10 GE

Recommended Value

Retry Attempts 0 to 255 The amount of times that a D20K will try to restart after a failure. 0 0

GE Recommended

Value

Communication Fail Time Out (ms)

0 to 65535

Length of time the D.20 Peripheral Link application waits for communication over the HDLC link before shutting down all the relays. 0 ms (disabled).

0 0 GE

Recommended Value

4.2 Data Translation Application

Figure 17: DTA Main configuration window

4.2.1 Functions of the DTA

The functions of the DTA are as follows:

1. Interfaces between the DTA and the DPA to process request and control information.

2. For viewing points that are in the system point database.

For normal D20 configurations, the applications that are normally enabled are the following:




i. D/A Conversion DTA

ii. DNP V3.00 Data Link

iii. Bridgeman

4.2.2 DNP V3.00 Data Link Configuration

Figure 18: Port configuration window

Figure 19: Port configuration parameters




Table 13: DNP V3.00 Data Link Configuration Settings – Communications to the Master Station

DNP V3.00 Data Link Configuration

Port configuration parameters


GE Default Value

Eskom Value


Setting Value

Port COM 0 to 7 This setting indicates the port that will be used for communication 1 COM 1 to 7

Any port can be selected, except for COM 0, as it

will result in losing the use of that port for configuration.

Baud Rate (75,300, 600,

1200, 2400, 4800, 9600, 19K2, 38K4

or 57K6 baud)

The speed of the link in bits per second.

9600 300, 1200, 4800,

9K6, 19K2, 38K4

Depends on Telecomms type

Reset Link on Rx NACK

Enabled/Disabled

Whether to reset the link and resend the user request after receiving a data link NACK with the Data Flow Control (DFC) bit clear in response to a frame transmitted using the SEND/CONFIRM EXPECTED service.

Enabled Enabled -

DCD Enabled/Disabled Whether to use the Data Carrier Detect (DCD) line, Disabled Disabled except

for UHF radio Used in UHF for

collision avoidance

RTS Enabled/Disabled Whether to use the Request To Send (RTS) line. Disabled Enabled This is set for pre-

amble purposes

CTS Enabled / Disabled Whether to use the Clear To Send (CTS) line. Disabled Disabled

All present comms devices cater for DCD.

DCD to Rx Enable 0 to 32767 ms Time to wait after the DCD line is

asserted before receiving data. 10

10 for Analogue UHF 0 for Digital UHF (TRIO Digital Radios only)

To ensure that the channel is opened only for proper comms not spurious noise.

RTS Preamble

(ms) 0 to 65535 The length of time to assert RTS

before transmitting data. 50

Analogue UHF 300 - 750ms Digital UHF - 0ms GPRS = 0ms

Depends on settings per area as long as it is within the specified range.

RTS Postamble

(ms) 0 to 65535

The length of time to continue to assert RTS after transmitting data.

50

DRTU/PMRTU connected to IST FFSK modem - 100ms All others - 0ms

Depends on settings per area as long as it is within the specified range.

Confirm Timeout

(ms) 0 to 4294967295

The maximum time the communications link can be idle while the Data Link waits for a secondary response frame (i.e. a data link confirm) from a remote device. The timeout is reset with every valid frame transmission or reception.

2000 2000 GE Recommended Value




DNP V3.00 Data Link Configuration

Port configuration parameters


GE Default Value

Eskom Value


Setting Value

Response Timeout

(ms) 0 to 4294967295

The maximum time the communications link can be idle while the Data Link waits for a primary frame from a remote device. This is the timeout between frames of an incoming, multiframe message. In addition, when the user requests the data link to wait with timeout for a response from a remote device, the data link adds the Response Timeout to the application processing delay supplied by the user to wait for the first frame of the response. The timeout is cancelled with every valid frame transmission or reception, and then restarted where it left off. At a minimum, the timer is restarted with the Confirm Timeout.

10000

Analogue UHF: 10000 – 30000 Digital UHF: 2000 - 6000 GPRS: 5000 - 10000

Depends on the max frame size, baud rate and network topology

4.2.3 Bridgeman Configuration

Figure 20: Bridgeman Application window

There are 2 tables that are used for the Bridgeman configuration namely, the Local application table and Remote application table.

The Local application table as shown in Figure 20 refers to the addresses of the ports on the D20 unit, whereas the Remote application table shown in Figure 21 refers to the Master or IED addresses. For both applications, the application address and the LAN address on the same row have to be the same, with the LAN address being the HEX representation of the Decimal address in the application address column.




Figure 21: Local Application table

Figure 22: Remote application table

4.2.4 D/A Conversion DTA

This application is used for the tap changer position D/A BCD conversion. The bits that are used for the BCD conversion are converted to a Pseudo Analogue DCA point which is available to the DCA. On the system point database application window, under the DCA/DTA list an instance/application with the D/A Conversion DTA is added, this is where the column Analogue inputs needs to be updated to reflect the number of tap changer Analogues selected.

Figure 23: AI Information table

The AI information table selections are the Input type (BCD) and the Unipolar /Bipolar (Unipolar) selections with no strobe. The Number of DI and the Map Offset is an indication based on the selections made on the digital inputs selected on the digital input map.




Figure 24: Map offset drop down window

Note that the MSB is always on top for the BCD conversion. The number of selected DIs is as per the number of DI column in the AI Information table.

4.3 Data Processing Application

In this section, the configuration of the DNP3 Data Processing Application shall be discussed. In Config Pro™, Double click on the application as shown on the screen below.

Figure 25: DPA Main window

Double click on the DPA configuration table.




Figure 26: DPA configuration table icon

Select the DPA configuration tab. Under the DPA address field, set the RTU address and under the master address field, set the DNP3 master’s address. Once you have set the RTU address and the master’s address double click on the DPA Points column. See the table below for the DPA settings.

Master Address

RTU Address

Double Click

Figure 27: DPA configuration table

Table 14: DNP 3 Configuration table

DNP V3.00 DPA Configuration Settings Table

Settings Name

Settings Options Description

GE Default Value

Eskom Value


Setting Value DPA Address

0 - 65535 This numeric field specifies the address of the DPA/RTU. It has to be unique within the network

-User Defined

Must conform to standard DNP 3 Addressing Standard 34-401

Master Address

0 - 65535 This numeric field specifies the default address of the master station.

-User Defined

Must conform to standard DNP 3 Addressing Standard 34-401

Under DPA points, configure the points to be displayed to the master by configuring First Binary Input, First Binary Output and First Analogue Input columns. Double click on each column and select points which are to be displayed to the master by highlighting them and click OK. This is demonstrated in Figure 28.




Double Click Figure 28: DPA points configuration window

4.3.1 Binary Input Settings Table 15: Binary inputs settings

Binary Input Point Settings

Settings Name


GE Default Value

Eskom Value


Setting Value

Binary Input Point

- System Point Number of the binary input in the RTU database -

Defined binary inputs should be selected

-

Invert Status

Disabled/ Enabled

Inverts binary input point to be reported in the inverted state Disabled Disabled

Normally there is no need to invert the status of the digital input.

COS (Change of State)

Disabled/ Enabled Generates events Disabled Disabled

All events should preferably be time-stamped

SOE (Sequence of Events)

Disabled/ Enabled Generates time-stamped events Enabled Enabled

All events should preferably be time-stamped

Event Class

Class 1, 2 or 3

Describes the default class for each event generated for each point Class 1

Refer to DNP3 Class Allocation Document 34-897


Once all the settings have been configured as described on the table above, one should highlight all the selected points and click OK. See the figure below.

Figure 29: DPA digital inputs table




4.3.2 Binary Outputs Settings

Under binary outputs, select the desired digital outputs, highlight them and click OK.

Figure 30: DPA digital outputs table

Analogue Input Settings

Table 16: Analogue input setting

Analogue Input Settings Table

Settings Name


GE Default Value

Eskom Value


Setting Value

Analogue Input Point - System Point Number of the Analogue

input in the RTU database - Defined Analogue inputs should be

selected -

Analogue Size 16 or 32 Default reported analogue size in bits - 16

Do not need the resolution of 32 bits

Event Class Class 1, 2 or 3

Describes the default class for each event generated for each point -



Event Deadband -1 to 32767

Specifies the deadband value, in normalized RTU database counts, that the Analogue must exceed before an event is created.

-1 Please refer to Annex B

Buffer Events

Buffered/ not buffered

Specifies whether the Analogue events will be buffered in the RTU’s memory

Not Buffered Not Buffered

Instantaneous values are reported to the master

Time Tag Enabled/ Disabled

Specifies whether the Analogue events will be time tagged or not Disabled Disabled

Time tagging is disabled to reduce the message sizes

Processing options

Current Value & Time/

1st Value & Time

This value specifies how analogue input events are reported to the DNP master station The selection can be Current Value & Time or First Value & Time. For further details refer to DNP V3.00 DPA Configuration Guide B021-0 CG

Current Value &

Time

Current Value & Time

Analogue events reported will contain current values and time.




Analogue Input Settings Table

Settings Name


GE Default Value

Eskom Value


Setting Value

Range 0 - 32767

This parameter is the analogue input scaling range. The range defines the maximum DNP protocol value that will be reported when the WIN analogue input reaches its full-scale value.

32767 1*

This value depends on

scaling applied on the IED. For e.g. if a scaling factor of 10 is applied in the IED, then the

Range and Divisor should

negate this scaling factor. For peripheral cards

I/O cards, a value of 1 is acceptable.

Divisor 0 - 32767

This parameter is the analogue input scaling divisor. The divisor defines the WIN analogue input full-scale value. The analogue scaling factor is determined by the combination of the Range and Divisor parameters.

32767 1*

This value depends on

scaling applied on the IED. For e.g. if a scaling factor of 10 is applied in the IED, then the

Range and Divisor should

negate this scaling factor. For peripheral cards

I/O cards, a value of 1 is acceptable

Offset 0 - 32767

This parameter specifies a compensation offset factor for a WIN analogue input value. The value configured is in terms of number of DNP value counts.

0 0 Do not need to offset analogue values.

Unsolicited Responses

Once you have configured the DPA points under the DPA Configuration table scroll to your right to configure the Unsolicited Responses parameters.

Figure 31: Unsolicited responses tab

Under the Unsolicited Responses table, you can then select the type of data to be reported. See the screen shown below.

Double Click




Figure 32: Unsolicited responses settings

See the table below for detailed settings on unsolicited responses

Table 17: Unsolicited Responses Settings

Unsolicited Responses


Default Value

Eskom Value


Setting Value

Class 1 Enabled/Disabled Specifies that Class 1 data should be included in unsolicited responses

- Enabled -


- Enabled -


- Enabled -

Hold Time (ms) Time in ms

Specifies the maximum time that the DPA will hold an unsolicited response before it is reported to the master

1000 1000 GE default value

Hold count Number of events number of events that should occur before an unsolicited event is reported

1 1 GE

recommended value

Idle Report Period Enabled/Disabled Specifies the time in ms to idle

before sending an unsolicited event 0 0 GE

recommended value

Back-off Period Time in ms

Period used for back-off timer. It is started when all UR retries have elapsed.

300000 300000 GE

recommended value

Silent Master Enabled/Disabled Enables all unsolicited responses and never asks for confirmation. Disabled Disabled Confirmation not

required

Offset 0 - 32767 This parameter specifies a compensation offset factor for a WIN Analogue output value.

0 0 -

Auto Data Dump Enabled/Disabled if a point is reported by UR, send

all value of the same data type Disabled Disabled Only the point

with the change should be reported

UR Enable By master/By DPA UR can be enabled by master or by DPA By DPA By Master

UR is enabled by the SCADA

master

Select the data type to be reported




4.4 Summary

1. Define all devices

2. Assign DNP3 addresses , DTA links

3. Determine all :

• Digital Input points

• Digital output points

• Analogue Input points

• Counters

Enable all applications to use.

4. Complete the SPD WIN

4.1 DI = 3 Global + x Actual + 16 Pseudo

4.2 DO = 9 Global + x Actual + 10 Pseudo

4.3 AI = 0 Global + x Actual + 5 Pseudo

5. DCA Application

1. Device Poll Table

2. Device Point map

3. Device Configuration map

4. Device DCA map

6. DTA DNP 3

6.1 Bridgeman

6.1.1 Local Application Table (LAT)

6.1.2 Remote Application Table (RAT)

6.1.3 Configuration Table

6.2 DNP 3 Data Link

6.2.1 Port configuration

7. DPA DNP 3

7.1 Binary Input map

7.2 Binary Output map

7.3 Analogue Input map

7.4 Counters

7.5 DPA configuration table

Go back to Bridgeman to complete.




8. Generate

Clear Errors

9. Download

Check error logs.

NOTE: Downloading a file

Firstly, to login to westmaint one needs the login name plus the password. GOTO Westmain Then System functions Then 68K Monitor Then on the D25M prompt press F7 To change the Baud rate: On the D25m> prompt type BAUD XXXXX (Xxxx = desired rate, 1200 – 38400) Once the baud rate has been changed on the unit, the baud rate on the PC needs to be changed. To change the computer baud rate: Left click on the terminal emulator window, choose disconnect>> GOTO Options>>Port settings>>select baud rate chose above and connect again at the new baud rate by selecting con

5 Tests

n/a

6 Marking, labeling and packaging

n/a

7 Spares

n/a




Annex A - Impact assessment (informative)

Impact assessment form to be completed for all documents.

1 Guidelines

o All comments must be completed.

o Motivate why items are N/A (not applicable)

o Indicate actions to be taken, persons or organisations responsible for actions and deadline for action.

o Change control committees to discuss the impact assessment, and if necessary give feedback to the compiler of any omissions or errors.

2 Critical points

2.1 Importance of this document. E.g. is implementation required due to safety deficiencies, statutory requirements, technology changes, document revisions, improved service quality, improved service performance, optimised costs.

Comment: To provide assistance and guidance to the telecontrol EDFS Staff during commissioning of the D20 RTUs.

2.2 If the document to be released impacts on statutory or legal compliance - this need to be very clearly stated and so highlighted.

Comment: Does not impact

2.3 Impact on stock holding and depletion of existing stock prior to switch over.

Comment: No Impact

2.4 When will new stock be available?

Comment: n/a

2.5 Has the interchangeability of the product or item been verified - i.e. when it fails is a straight swop possible with a competitor's product?

Comment: n/a

2.6 Identify and provide details of other critical (items required for the successful implementation of this document) points to be considered in the implementation of this document.

Comment: n/a

2.7 Provide details of any comments made by the Regions regarding the implementation of this document.

Comment: No comments received.




Annex A (continued)

3 Implementation timeframe

3.1 Time period for implementation of requirements.

Comment: This document shall be used as a reference whenever necessary.

3.2 Deadline for changeover to new item and personnel to be informed of DX wide change-over.

Comment: n/a

4 Buyers Guide and Power Office

4.1 Does the Buyers Guide or Buyers List need updating?

Comment: No

4.2 What Buyer’s Guides or items have been created?

Comment: n/a

4.3 List all assembly drawing changes that have been revised in conjunction with this document.

Comment: n/a

4.4 If the implementation of this document requires assessment by CAP, provide details under 5

4.5 Which Power Office packages have been created, modified or removed?

Comment: None

5 CAP / LAP Pre-Qualification Process related impacts

5.1 Is an ad-hoc re-evaluation of all currently accepted suppliers required as a result of implementation of this document?

Comment: No

5.2 If NO, provide motivation for issuing this specification before Acceptance Cycle Expiry date.

Comment: n/a

5.3 Are ALL suppliers (currently accepted per LAP), aware of the nature of changes contained in this document?

Comment: n/a




Annex A (continued)

5.4 Is implementation of the provisions of this document required during the current supplier qualification period?

Comment: n/a

5.5 If Yes to 5.4, what date has been set for all currently accepted suppliers to comply fully?

Comment: n/a

5.6 If Yes to 5.4, have all currently accepted suppliers been sent a prior formal notification informing them of Eskom’s expectations, including the implementation date deadline?

Comment: n/a

5.7 Can the changes made, potentially impact upon the purchase price of the material/equipment?

Comment: n/a

5.8 Material group(s) affected by specification: (Refer to Pre-Qualification invitation schedule for list of material groups)

Comment: n/a

6 Training or communication

6.1 State the level of training or communication required to implement this document. (E.g. none, communiqués, awareness training, practical / on job, module, etc.)

Comment: IST GE D20 training Part 1

6.2 State designations of personnel that will require training.

Comment: Telecontrol Staff

6.3 Is the training material available? Identify person responsible for the development of training material.

Comment: Telecontrol Technology

6.4 If applicable, provide details of training that will take place. (E.G. sponsor, costs, trainer, schedule of training, course material availability, training in erection / use of new equipment, maintenance training, etc).

Comment: n/a

6.5 Was Training & Development Section consulted w.r.t training requirements?

Comment: No




Annex A (continued)

7 Special tools, equipment, software

7.1 What special tools, equipment, software, etc will need to be purchased by the Region to effectively implement?

Comment: Config Pro™ is required and this is provided to each Telecontrol Technician in their laptops via the EDFS laptop image.

7.2 Are there stock numbers available for the new equipment?

Comment: n/a

7.3 What will be the costs of these special tools, equipment, software?

Comment: None.

8 Finances

8.1 What total costs would the Regions be required to incur in implementing this document? Identify all cost activities associated with implementation, e.g. labour, training, tooling, stock, obsolescence

Comment: None.

……………………………………………………………………………………………………………………….

Impact assessment completed by:

Name: Kenneth Brwon

Designation: Telecontrol Discipline Specialist




Annex B – Analogue Scaling Serial Communications The SEL351S relay provides scaled engineering analogue values. Since the SEL351S also conforms to the DNP3 standard, it must provide a 16 bit 2’s complement value for the analogues. The range is -32768 to +32767 IED manufacturers can represent measured values as either Engineering Values or Raw Values. Assume the IED is measuring the busbar voltage which is 11kV. If the IED represents the measured values as Engineering values then: The Engineering value (11000 V) in 16 bit binary would be 0010 1010 1111 1000. The RAW value would be: 0000 1110 0101 0010 Jitter Settings/Event Deadband After discussion with Network Optimisation, it was decided that the following jitter values would be suitable:

Analogue Description Jitter Settings (%)Current 2% Voltage 1% Power 2%

The Event Deadband is now much less complicated to set. Assume the measured current for a feeder is 200A therefore the event deadband setting must be 2% of 200 which is 4. The IED also has analogue deadband settings. It is recommended that these jitter settings must be less than the jitter of the RTU therefore a jitter of 1% should be adequate.

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