nerc idc interchange distribution calculator system overview june 1999
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NERC IDC Interchange Distribution Calculator System Overview June 1999

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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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Presentation Transcript
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 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
network configuration
Network Configuration
  • Public Internet Access
  • Private Internet Access (NERCNet)
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 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
performance response time
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%
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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