NERC IDC Interchange Distribution Calculator System Overview June 1999
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Transcript of NERC IDC Interchange Distribution Calculator System Overview June 1999
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Open Access Technology International, Inc.
NERC IDC Interchange Distribution
Calculator System
Overview
June 1999
Open Access Technology International
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Open Access Technology International, Inc.
Contents
Transaction Management System (TMS) Transaction Information system (TIS) OASIS Phase II Management of Grid Congestion (NERC IDC)
IDC Architecture IDC applications IDC Maintenance & operation IDC Security
Conclusions Questions
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Open Access Technology International, Inc.
A reliable and secure nationwide
information system which provides: Electronic exchange of transactions and
scheduling data (TIS) Seamless transmission reservation (OASIS II) Management of grid congestion (IDC)
TMS Background
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Open Access Technology International, Inc.
Electronic exchange of transaction information
energy profile loss accounting transmission reservation
NERC initiative to be operational by June 17, 1999
Transaction Information System (TIS)
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Open Access Technology International, Inc.
TIS Background
Specification released by NERC in early December 1998
Prepared by NERC TIS working group (TISWG)
Constrained Path Method (CPM) for curtailment
TIS 1.4 is intended to support hourly tags
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Ensure electronic transfer of tagging information
Create more efficient tagging mechanism Improve usefulness of tags with uniformity
and better quality Assure accuracy and uniqueness of tags
TIS Benefits
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Business Process
Source TIS 1.3 Document p. 7
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TIS Services
Tag agent service Responsibility of PSEs Responsible for creation of tag
Tag authority service Responsibility of CAs “Traffic cop” for all tag interactions Forward tags to IDC
Tag approval service Responsibility of CAs and TPs Sends approval or denial to authority
service
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Interface Protocols
Standard interfaces defined for sending and receiving data between various entities
Tis 1.4 services communicate using TMP (built on top of TCP/IP, HTTP) Tag transfer via e-mail is no longer supported Data model based on CSV 1.1 Error codes defined
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TMP Messages
AGENT AUTHORITY APPROVAL
Forwarding
Submit
Cancel
Notify
Status
Assess
Cancel
Update
Notify
Implement
Dstatus Status
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Provides for seamless transmission reservation nationwide
Streamline Scheduling and Transmission Reservation
Future activity
OASIS Phase II
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Management of Grid Congestion
Proposal Initiated by NERC for the Eastern Interconnection
NERC IDC was Awarded to Alliance of OATI & Perot Systems in April 1999
Scheduled for Operation by June 24, 1999 IDC will be Delivered by the Alliance as a
Service
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NERC IDC
OATI Designs and Develops the System OATI Houses and Maintains the System Perot Systems Provides First Line of
Customer Support, Project Management and Documentation
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IDC Data Flow
Flowgates
IDCExecutive
FactorsEngine
ImpactAnalysis
TLR
Halt
Curtail
Reload(2.0)
IslandingProcessor
TAG DB
IDCDB
SDX
IDC functions
WebServer
Tag Authority/SCs
TIS Lists
Internet
SC/NERC TP/CA PSE
NERCNet
SC/NERC TP/CA
iIDC
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IDC Architecure
Client /Server Architecture Server Hardware/Software
Intel based hardware NT Operating system
Client Hardware/Software Any available hardware Any Operating system
Inter-application communications and messaging MS Message Queue MS COM/DCOM
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Server Hardware
ArchiveDatabase Server
IDC/TLR Server IDC/TLR Server
Training/TestServer
Web Server
IDCDatabase
Server
TagDatabase
Server
TMPServer
Development/TestServer
Web Server
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Network Configuration
Public Internet Access Private Internet Access (NERCNet)
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Communication Infrastructure
DNSServer
T1
FrameRelay
Upstream ISP
CSU/DSU Router
Hub
Firewall
Internet
Upstream ISPFrameRelay
T1
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IDC Software
Server IDC Software Applications Database User Interface
Client IDC Software Internet Browser
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Open Access Technology International, Inc.
NERC interchange distribution calculator
On-line TDF calculations Transaction impact analysis Transmission-line Loading Relief
(TLR) and Transaction Halt Market Re-Dispatch initiative
IDC Applications
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IDC Database
Based on Third party RDBMS MS SQL Server 7
Tag Database IDC Database Historical Archival Database
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IDC User Interface
Browser Based Technology HTML JAVAScript
Supports Mainstream Browsers MS IE Netscape
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IDC User Interface
Security Coordinator Displays TDF Viewers (PTDFs, OTDFs, LODFs) Transaction Viewer Impact Calculation Viewer TLR Result Viewer Next Hour Coordination (Halt) viewer Execution Displays Input Displays Alarming and notification facility
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User Interface
Market Re-dispatch Flowgate real time displays Generator Shift Factors (GSF) Summary of TLR results (Active and last 7
days)
NERC TLR Public Access TLR Results PTDF/OTDF
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External Interfaces
Interface to ISN via MAIN Receive real time flowgate data Access at 5-minutes interval
Interface to iIDC Tags transferred every 5 minutes
NERC Interface via FTP Public data (PTDFs/OTDFs/LODFs) (Hourly)
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Redundance/Failover/Recovery
Redundant Application Servers Redundant Web Servers Redundant Database Servers Redundant Component in each server (RAID
disks, network cards, power supplies) Automatic Failover
Each pair of servers configured as backup for the other
Redundant Internet Connections
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Data/Software Backups
Daily backups of transactions and network changes
Daily tape backup of Software changes database/ schema changes UI template changes IDC Applications changes
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System Sizing
Control Areas 250 Transactions per-hour 3000 Flowgates 2000 NO. of Buses 50,000 NO. of Branches 80,000 NO. of Phase Shifters 100 NO. of SCs 17
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Performance/Response Time
1 TLR or Halt Response 10 secs 3 Simultaneous TLR 20 secs 5 Simultaneous TDF views 15 secs SCs notification in 30 secs TDF updates 1/hour Min. System Availability 98.5%
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Maintenance and Operation
Help Desk One Call Reporting for operational problems on a
7x24 basis Manned Staff 12-hours/weekday plus Saturday Scheduled 2-level on-call staff during all hours Guaranteed Response Time Performance
User Registration
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Security
Software Security Password protection Compartmentalization User Type access Security Token Monitored logins by Administrator Private Network (NERCNet) for SCs
Secured Tech Area at OATI Data Center Restricted Access to Servers
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Project Management
Communications and Reporting Issue Management Change Order Process
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Conclusions
TMS provides seamless integration of: Tagging/scheduling Transmission reservation Congestion management
Provides the foundation for efficient and reliable grid operation into next millennium