The Intelligent MV/LV substation an Important Module for ... · The Intelligent MV/LV substation an...

Seite 1 August 2012 Siemens AG / IC SG EA PRODistribution Automation © Siemens AG 2012. All rights reserved.

The Intelligent MV/LV substation an Important Modulefor Optimizing Distribution Grids

Seite 2 August 2012 Siemens AG / IC SG EA PRODistribution Automation

Distribution Networks & Distributed Energy Resources Drivers in Europe

Meshed system Adaptive protection High automation degree Bidirectional communication

Tom

orro

wTo

mor

row

Bidirectionalpower flow

Generationat MV level

Generation/Consumptionat LV level

Tap changerdistributiontransformer

e-carinfrastructure

Intelligentmeters

EnergyStorage

Radial system Simple protection Simple or no automation Simple or no communication

Unidirectionalpower flow

Simpledistributiontransformer

110 kV

20 kV

0.4 kVToda

yTo

day


Meet power quality standardsReduce outage time

Improve availability Improve Power Quality

Distribution Automation / Feeder Automation From blind spot to full vision

230 V

+10%

-10%

U max

U min

Black: without automationBlue: three point automationRed: all stations are automated

Time

Interruption(%)

Time


Reduce outage time

Improve availability

Distribution Automation 1. Improve availability

Black: without automationBlue: three point automationRed: all stations are automated

Time

Interruption(%)


Application of a cable network Solution for centralized not automated configurations

20kV

0,4 kV

1703 Smart IEDFeeder Automation

SICAM Substation Automation

Normally open point

SmartGridControl Center



20kV

0,4 kV



Normally open point


Fault information to Substation in next level switch gearand Control Center

Open circuit breaker automatically to de-energize the ring



20kV

0,4 kV



Normally open point



Setup time for service crew




20kV

0,4 kV



Normally open point




Due to fault indicatorthe right station can be found easily




20kV

0,4 kV



Normally open point





Open load switches sides on one side of the fault location




20kV

0,4 kV



Normally open point






Traveling to NormallyOpen Point

Close the NormallyOpen Point




20kV

0,4 kV



Normally open point








Traveling to second side of fault location

Open load switches sides on second side




20kV

0,4 kV



Normally open point








Traveling to second side of fault location

Open load switches sides on second side

Control Center Restore services by closing the infeed circuit breaker



Application of a cable network Self Healing- Service restoration in 4 steps

20kV

0,4 kV

Smart IEDFeeder Automation

SICAMSubstation Automation


20kV

0,4 kV


SICAMSubstation Automation Fully automated

Service Restoration

Fault information to Substation in next leveswitch gear




20kV

0,4 kV



Service Restoration

Fault information to Substation in next level switch gear


Open load switches on both sides of the fault location and close at the same time the normal open ring automatically



20kV

0,4 kV



Service Restoration

Fault information to Substation in next level switch gear


Open load switches on both sides of the fault location and close at the same time the normal open ring automatically

Restore services by closing the circuit breakers at ring infeedin less than 3 minutes



Meet power quality standards

Improve Power Quality

Distribution Automation 2. Meet power quality standards

230 V

+10%

-10%

U max

U min

Time


Distribution Automation Power Quality

Umax

inside the

limits of regulation 230 V

+10%

-10%

Umax

U min

No Overvoltage

Classical voltage curve of an feeder without decentralized in feed

U

l

R+jX R+jX R+jX R+jXI

Voltage limits

Load

Distribution Transformer

t


Distribution Automation Power Quality and Decentralized in feed

Local over voltage

depends on

size of infeed and network impedance

230 V

+10%

-10%

Umax

U min

Overvoltage

Voltage Curve of decentralized infeed and asymmetric loads

Decentralized Generation like PV

U

l

R+jX R+jX R+jX R+jXI~

Inverter

Load

Voltage Limits

Distribution Transformer


Wide Area Voltage Control Regulated Distribution Transformer

Distribution Automation New concepts of voltage regulation


Low-Voltage Distribution Energy-Distribution solution

LV DistributionMV Distribution

DLCModbus

AMIS Meter

SICAM P

SINVERT

Solar

SICAM T

Keep voltage limits

Reduce voltage dips

Increase load capacity

Distribution-Network Optimization

Smart Meter

Improved power quality to reduce

side effects

Improved load capacity

for decentralized power infeed

Postpone costly network upgrades

SICAM CMIC


This offers further economic advantages:

•

Increase distribution reliability•

Improve distribution operations and maintenance

•

Leverage small decentralized generation

•

Handle bidirectional power flow•

Increase distribution power quality •

Leverage of increasing number of e-cars

•

Integration of metering data

Siemens the right component for every task

Medium-voltage switchgear 8DJH

Telecontrol system: SICAM mic

Smart IED: SICAM emic/cmic, 7SC80

Substation automation/telecontrol node : SICAM PAS

Sensors and actors with various partners

Communication:

conventionally and WiMAX / BBPL

Network control system SINAUT PowerCC

Decentralized energy management DEMS

Power Quality SIMEAS (MV/LV)

Electronic Meters AMIS

Network planning

Application competence

Regenerative power supplies, climate-protection targets, regulation of incentives and maintenance of energy quality require an active Distribution-system with intelligent transformer substations

Intelligent Transformer Substations Offer Additional Economic Advantages


Thank you for your attention!


Backup Slides

Vorführender

Präsentationsnotizen

Substations and feeder automation are extremely strategic to utility operations and businesses. They have huge density of valuable information needed to operate and manage a SG. As well, FA provides the strongest business case for utilities. It provides benefits that are 6-8 times teh cost of the technology and reduced pay-back time. Nevertheless these technologies must be effectivly depployed to fully realize these benefits


The Intelligent Transformer Substation “3 Levels of Intelligence”

Transformer

Low voltage MV switchgear

Higher availability

Faster fault location

Monitoring

Telecontrol

Power-flow control

1

2

3

Minimization of down times ("h" "min")

Minimization of losses

Management of decentralized power supplies

Vorführender


To start with the subject, this slide shows a typical secondary transformer substation with MV switchgear 8DJH (for example, RRT), transformer and low-voltage part as frequently found in Central Europe. Today, one can find the request of 3 different levels of intelligence. The first level comprises just monitoring, required for example, to achieve higher availability or faster fault location. Apart from monitoring, the second level additionally offers the possibility of remote control, thus minimizing the downtimes. Long ways of the fault-clearing teams to often distant transformer substations are therefore a thing of the past. The third level provides the option of complete power-flow control by the secondary transformer substation. This refers, for example, to the activation of reactive-power compensation or the management of decentralized power supplies by actively triggering the inverters.


Design of an Intelligent Transformer Substation Communication RTU – Control Level

RK 1 RK 2 Trafo

RTU

Distribution Management System

Spectrum PowerCCWireless (GSM / GPRS) IEC 60870-5-101/104Interface

switchgear/RTU

Telephone connection(analog/ISDN)Ethernet TCP/IP IEC 60870-5-101/104IEC 61850*

Telecontrol node/

Substation Automation

SICAM PAS / SICAM 1703

IEC 60 870-5-101/104 IEC 61850

Siemens RTUSICAM

EMIC / CMIC

Energy storage

(battery or capacitors)Siemens RMU 8DJH

* in preparation IEC working group 17

Two possible designs for Intelligent Transformer Substations: 1) RTU integrated in MV-Switchgear

2) RTU in separate “RTU-Box”

Vorführender


Let’s have a look at the structure of an “intelligent transformer substation”: The actual Ring Main Unit (RMU) [for example, our most recent product 8DJH] features optionally an interface to which an RTU cubicle is connected. The interface is required to enable a possible fast and simple replacement at the end of the service life of the RTU – which is earlier than that of the RMU – or in case of an RTU failure. Besides the real RTU, the RTU cubicle contains an energy storage in the form of a lead gel battery, or a capacitor storage. Communication to a telecontrol node [for example, to a substation automation system SICAM PAS or SICAM AK 1703], or directly to the network control center is done with wireless (GSM, GPRS), telephone or Ethernet systems via the telecontrol protocols IEC 60870-5-101, or 104. Upcoming is the discussion to use the IEC 61850. The IEC working group 17 and Siemens as a part of this working group are working on the development of IEC 61850 today.


Secondary Transformer Substations: The Key Positions in the Network

Functions of SICAM Smart IED resp. AMIS DC

Functions of SICAM Smart IED resp. AMIS DC

Low-voltage (LV) management

LV monitoring

Integration of meter data

LV cable protection

Power-quality monitoring

Reactive power / harmonics compensation

Transformer regulation on secondary side

Coordination of infeed

and load

Distribution-system management

Remote control/monitoring

of secondary transformer substations

Automatic restoration of Power-supply

Data source for MV monitoring

Coordination of infeed

and load

Communication manager (peer-to-peer)

AMIS

electr. meter

SICAM Smart IED,

resp. AMIS DCFeeder Automation

incl. Load Management

Design V4

variable secondary system

distribution transformer

8DJHMV switchgear

Current and voltage

sensors orsignal amplifiers

1 2

1 2

1

2Components under developmentExisting components

1

Dezentrale Energieeinspeisung1


Today's Economical Compromise “3-Points” Automation as an Interims Step

7

-

103 IEC 60870-5

-

104

-

104/101

Network connection point

-

104/101

PV

Network control center

“Control center"

110 kV

20 kVUW1

110 kV

20 kVUW2 VIP customer


Communication Situation Today - No Direct Communication Infrastructure

Dezentralized Energy Infeed

20kV

0.4 kV

Energy Management System

DEMS

SICAM EMIC

1

1

1

Spectrum Power CCDSCADA/DMS

Fiber Optic Network

Setup change for communication:(Pros and Cons for Communication alternatives)

Cable / pilot wire - expensive, - time consuming setup

GPRS - unbuffered, - 3rd party dependency

Tetra-Net + availability, - hierarchical

WiMAX + cost optimized, + Networking ability

BPLC* + cost optimized, + Networking ability

1AMISElectronic

Meter

1

* Broad Band Power Line Communication

SICAMSubstation AutomationSICAM PASSICAM CMIC


Upcoming Communication Systems Introduce New and Cost-Efficient Possibilities

0.4 kV

Energy Management System

DEMS

WiMAXBPLC*

1

1

1

1

Spectrum Power CCDSCADA/DMS

Fiber Optic Network 20kV

AMISElectronic

Meter

IEC 60870-5-104IEC61850**

Dezentralized Energy Infeed * Broad Band Power Line Communication ** depending on progress in Working Group 17

SICAMSubstation AutomationSICAM PAS

SICAM EMIC

SICAM CMIC


The way for the future: Modbus Communication within the Transformer Substation

RS485 Modbus RTU

SICAM P50

Low-Voltage measurements

FITformer®

REG Transfomer with LV Tab changer

Feeder Condition Monitor with in 8DJH integrated Medium-voltage sensors

Motor Control Unit

The electronic switch controller for 8DJH

SICAM FCM

SICAM CMIC

Compact Micro RTU especially designed for

Secondary Substations


8DJH – Secondary Distribution Switchgear for Ring Main Units

8DJH

Up to 17.5 kV, 25 kA or 24 kV, 20 kA

Busbar 630 A, feeders up to 630 A

Factory assembled, type tested switchgear acc. to IEC 62271-200

Metal-enclosed

Single busbar

Gas-insulated, sealed for life

Flexible due to extension option and block formation

Individual panels and block versions


FITformer® REG – your sustainable success model for integrating renewable energies

Range of ratings up to 630 kVA; highest voltage for equipment: 36 kV

Low-voltage load regulation range in three steps

Operational characteristics and dimensions correspond to those of common distribution transformers

Additional setting range on the high- voltage side for optimum operation


Smart Grid RTU SICAM CMIC for Distribution Automation

Compact mechanical design

Designed for rugged environment conditions:

Highest EMC (5kV)

- 40 to + 70°C

Integrated UPS (excl. Batteries)

Add. Voltage outputs for


LC-Display for Information and Configuration

3 x I –

Phase currents2 x I –

Phase + 1 x I sensitive earthInputs Low Power IEC 60044-8 or 1A

3 x U Phase Voltages (230 V; 100V/3; 3.25V/3 )

Archive15 Minute Values of all currentsTrailing pointer for 15 min upto 1Jahr

Communication: Modbus RTUPower Supply: 24-60VDC /230VAC

integrated Battery for ~20 Years

Environmental condition: -30°...+85°

C

SICAM FCM

Use as Short Circuit / Earth Fault Detectorwith directional information

Condition Monitor –

U / I / P / Q / S / cosφ

/ f

and load flow direction

Monitor for Medium Voltage Distribution Systems SICAM Feeder Condition Monitor


Current Solutions For Intelligent Transformer Substations

Integrated RTU: 1 SICAM EMIC

2 Lead gel battery

3 Power-supply unit for battery

4 MCB 5 Modem

132 45


Separate RTU box: 1 SICAM EMIC

2 Wireless modem 3 UPS with Power-supply unit + battery 4 MCB 5 Local-remote switch

1

5

32

4



Optimized Future Solution For Intelligent Transformer Substations

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