Nerc idc interchange distribution calculator system overview june 1999
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NERC IDC Interchange Distribution Calculator System Overview June 1999 PowerPoint PPT Presentation


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Open Access Technology International. NERC IDC Interchange Distribution Calculator System Overview June 1999. Contents. Transaction Management System (TMS) Transaction Information system (TIS) OASIS Phase II Management of Grid Congestion (NERC IDC) IDC Architecture IDC applications

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NERC IDC Interchange Distribution Calculator System Overview June 1999

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Nerc idc interchange distribution calculator system overview june 1999

Open Access Technology International

NERC IDC Interchange Distribution Calculator SystemOverviewJune 1999


Contents

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


Tms background

TMS Background

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)


Transaction information system tis

Transaction Information System (TIS)

  • Electronic exchange of transaction information

    • energy profile

    • loss accounting

    • transmission reservation

  • NERC initiative to be operational by June 17, 1999


Tis background

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


Tis benefits

TIS Benefits

  • 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


Business process

Business Process

Source TIS 1.3 Document p. 7


Tis services

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


Interface protocols

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


Tmp messages

TMP Messages

AGENT

AUTHORITY

Assess

APPROVAL

Submit

Cancel

Cancel

Update

Notify

Notify

Status

Dstatus

Status

Implement

Forwarding


Oasis phase ii

OASIS Phase II

  • Provides for seamless transmission reservation nationwide

  • Streamline Scheduling and Transmission Reservation

  • Future activity


Management of grid congestion

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


Nerc idc

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


Idc data flow

IDC Data Flow


Idc architecure

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


Server hardware

Server Hardware


Network configuration

Network Configuration

  • Public Internet Access

  • Private Internet Access (NERCNet)


Communication infrastructure

Communication Infrastructure


Idc software

IDC Software

  • Server IDC Software

    • Applications

    • Database

    • User Interface

  • Client IDC Software

    • Internet Browser


Idc applications

IDC Applications

  • NERC interchange distribution calculator

    • On-line TDF calculations

    • Transaction impact analysis

    • Transmission-line Loading Relief (TLR) and Transaction Halt

    • Market Re-Dispatch initiative


Idc database

IDC Database

  • Based on Third party RDBMS

    • MS SQL Server 7

  • Tag Database

  • IDC Database

  • Historical Archival Database


Idc user interface

IDC User Interface

  • Browser Based Technology

    • HTML

    • JAVAScript

  • Supports Mainstream Browsers

    • MS IE

    • Netscape


Idc user interface1

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


User interface

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


External interfaces

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)


Redundance failover recovery

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


Data software backups

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


System sizing

System Sizing

  • Control Areas250

  • Transactions per-hour3000

  • Flowgates2000

  • NO. of Buses50,000

  • NO. of Branches80,000

  • NO. of Phase Shifters100

  • NO. of SCs17


Performance response time

Performance/Response Time

  • 1 TLR or Halt Response 10 secs

  • 3 Simultaneous TLR20 secs

  • 5 Simultaneous TDF views15 secs

  • SCs notification in30 secs

  • TDF updates1/hour

  • Min. System Availability98.5%


Maintenance and operation

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


Security

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


Project management

Project Management

  • Communications and Reporting

  • Issue Management

  • Change Order Process


Conclusions

Conclusions

  • TMS provides seamless integration of:

    • Tagging/scheduling

    • Transmission reservation

    • Congestion management

  • Provides the foundation for efficient and reliable grid operation into next millennium


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