Visibility 10/1/2007. 2 Agenda Visibility Overview Status –WECC –ColumbiaGrid Issues Preliminary Thoughts Regarding Conclusions and Recommendations Next.

Visibility

10/1/2007

2

Agenda

• Visibility Overview

• Status– WECC– ColumbiaGrid

• Issues

• Preliminary Thoughts Regarding Conclusions and Recommendations

• Next Steps

Visibility Overview

4

Model AreaModel Area

Actual WECC System

WECC Planning Model

SE Model

Network equivalence

WECC substationsNot in WECC planning model

Future Model

5

WSM Project

6

Stage 1 – Operational Network Model

RMRC(WAPA)

CMRC(PG&E)

PNSC(BPA)

WECC MergedOperational

Model

NetworkValidation

PowerFlow

OnlineDisplay

7

Stage 2 – SCADA & SE

WECC OperationalNetwork Model

WECC SCADA Model

State EstimatorSystem

SCADASystem

WECC ICCP Model ICCPSystem

WECCWON

8

Stage 3 – WECC Customization

• State Estimator Customs

• Remedial Action Schemes

• PowerTech Applications–TSAT – Transient Stability

–VSAT – Voltage Stability

9

System Model Objective

• WSM is the heart for system reliability. It will be used for estimating the system states and evaluating the system reliability.

• WSM is also going to be used for operation and system planning studies.

• Model needs to be accurate as much as possible. Most of the variance currently present need to be cleaned up.

• Proper tools, methodology, process and resources need to be identified to maintain the quality and accuracy of the model.

Results will be as good as the model

10

WSM Possible Users

• WSM Provides Common Network Model for– Reliability Entities (RE) – Planning Entities (PEs) – Reliability Coordinators (RCs) – Balancing Authorities (BAs)– Planning Authorities– Transmission Operators – Resource Planners – Standards Developers

11

Status – WECC Schedule

• Phase 1 – 1st Qtr 2008 (est 4th Qtr 2008)

• Phase 2 – est. 2009 (????)

• Phase 3 – est. 2010 (????)

Stage 1Stage 1

Stage 2

Q42006

Q12007

Q22007

Q32007

Q42007

Q12008

Q22008

Stage 3

12

Status – ColumbiaGrid Activities

• Signed - Development and Staffing Reliability Functional Agreement

• Appointed Norm, Darrell, Ramu to support these activities

13

Overview of Agreement - Visibility Enhancements

• CG will assist in Western Interconnection-wide and region-wide efforts to enhance the visibility for

– Reliability Coordinators– Transmission Operators/Owners

• Assist WECC’s in the development, testing, implementation and maintenance of

– West-wide Model– Similar tools

• Recommend to Reliability Parties regarding workable Visibility tools for their respective Transmission Systems and the Regional Interconnected System.

• Deliverables– Establish presence in certain reliability forums– Gain experience and knowledge– Develop recommendations regarding future actions of parties, including

potential roles for ColumbiaGrid– Publish interim recommendation (Date ??/??/??)

14

Visibility Enhancements Issues…….

• We need to identify approaches for following issues– Currently there is a clear plan how WSM is going to be used by WECC but not by

members.– 3 different bus names (Need cross reference)

• West Wide Model• Operation• Planning

– Utilities need to come up with a method to synchronize their model with West Wide Model on the ongoing basis (Planning and operation)

– Need to merge the model below 100 KV and validate– Additional tools are required to develop a planning model from the network model.– Model differences in operation and planning (Multi section lines, transformers, DC

lines……….)– Currently data maintenance process between planning and operation has lot of gaps.– Few members are performing operation studies. Others need to perform operation

studies based on current operating conditions to optimize the system and meet system reliability. (Next hour, next day and week)

– Bus and node orient model issues– Need to identify the software licenses provided by AREVA for CG members

15

Visibility Enhancements Issues……. (Cont.,)

• Equipment Model Issues & variables– Modeling methods are not consistence– Generators (Hydro, Thermal, Water level, temperature…..)

• MW limits• MVAR limits

– Transformers (Tap, impedance, model…)– Line data – Line connected shunts– Multi section lines– Shunts (Value, Base KV, no of shunts, location)– DC Line modeling– Load– Sub transmission modeling & Equivalent model

• Data quality need to be validated

Preliminary Thoughts regarding Conclusions and

Recommendations

17

Visibility Enhancements West-wide Model Initial

Development

BPA CAISO

WAPA

MergedWSM100 KV and above

Validate

InitialWSM

18

Visibility Enhancements West-wide Model Maintenance

OnlineModel

NewModel

WECCValidate

UpdateToCurrent Model

Every2 weeks

19

Visibility Enhancements West-wide Model - Planning

DumpProcessWSM

CIM/GE/PTI

Add Lower KV model

ValidateAdd FutureEquipments

Validate PlanningModel

20

Next Steps

• Identify how GC members can use the WSM model – Identify gaps

• Identify the process to cleanup, test and maintain the WSM

• Establish presence in certain reliability forums• GC Gain experience and knowledge• Develop recommendations regarding future

actions of parties, including potential roles for ColumbiaGrid

• Publish interim recommendation