# Presentation: 333439

## Regulation and Frequency Control 

- Raymond R. Vojdani, P.E.
- Operations Project Manager
- Western Area Power Administration
- Rocky Mountain Region

## Regulation and Frequency Control

- WACM as a Control Area Must Regulate its Load and Must Contribute to the Interconnections Frequency Regulation
- In Addition WACM Needs to Regulate for any Generations Variation and Mismatch

## Regulation and Frequency Control

- _Generation and Load Statistics_
- WACM Peak Gen Capacity: 5350 MW
- Average Generation: 3500 MW
- WACM Peak Load: 3090 (July 2003 )
- Average Load: 2160 MW

## Regulation and Frequency Control

- Generation Types/Owners in the CA:
- Federal Hydro Generators
- Load Serving Entities Generators
- Entities with Load Outside WACM CA but Generation inside WACM CA
- Independent Power Producers
- Water Conservancies

## Regulation and Frequency Control

- Federal Hydro Generations:
- Roughly about 750 MW capacity and about 520 MW of energy due to water conditions
- Scheduled to Federal preference customers inside or outside WACM CA
- Responsible for CA Regulation and Frequency Response (80%)
- Also covers Reserves and Losses

## Regulation and Frequency Control

- Load Serving Entities Generations
- Used to serve load in the CA
- Excess sold to the entities Inside or outside the CA
- Mostly fossil fuel steam turbines, but, also Gas Turbine, Combined Cycle, Wind Turbine, Diesel, and other types of generators.

## Regulation and Frequency Control

- Entities with Load Outside WACM CA but Generation Inside WACM CA
- Salt River Project ( 250 MW of CRG #2 and CRG #3)
- Platte River Power Authority ( 150 MW of CRG #2 and CRG #3, 5.6 MW of Medicine Bow Wind Farm)
- PacifiCorps ( about 165 MW of CRG #2 and CRG #3)

## Regulation and Frequency Control

- Independent Power Producers
- 	Not too much, only a 6 MW unit in Western Colorado, owned by Williams Energy
- Water Conservancies
-  Delores Power Project (two generating units of about 12 MW)
- Williams Forks Denver Water Board (one generator of about 3 MW)

## Observations:
WACM CA is Required to Regulate for Load, Frequency, and Generation Variations
WACM Needs to Recover its Regulation Costs
WACM Currently Has a Load Based Regulation Rate
WACM May Needs to Develop a Generation Based Rate

- WACM CA is Required to Regulate for Load, Frequency, and Generation Variations
- WACM Needs to Recover its Regulation Costs
- WACM Currently Has a Load Based Regulation Rate
- WACM May Needs to Develop a Generation Based Rate

- Regulation and Frequency Control

## Load Variation (CA)

## Load Variation (BHP)

## Generation Variation (Steam Turbine, LRS #2)

## LRS #3

## CRG #3

## Generation Variation (Craig # 2)

## Generation Variation (Williams)

## Generation Variation, Medicine Bow Wind Farm, Capacity 5.6 MW)

## Regulation and Frequency Control

- Where are we thinking?
- Revisit the Entire Regulation Issue
- Identify Who and What Utilizes the Regulation Resource
- Examine Load and Generation Separately and Identify the Impact of Each Component
- Based on the impact, allocate the cost so that everybody pays their faire share of cost
- 	 based on their usage of this resource

## Regulation and Frequency Control

- Regulation Consumption = ∑ ( dG(t)/dt + dL(t)/dt )
- Regulation Consumption =  ∑ dGa(t)/dt + dLa(t)/dt + dGb(t)/dt + dLb(t)/dt +.....+ dGz(t)/dt + dLz(t)/dt

## Regulation and Frequency Control

- _Summary:_
- We are Delighted for your participation
- We are here to listen to your suggestions or any comments you might have
- We are doing this because you asked us to examine the issue more throughly
- We like to make this process as democratic as we are allowed under our Federal and Legislative mandates
- Questions ?

## Regulation and Frequency Control

- Questions  ?
- Telephone: (970) 461-7379
- E-mail: avojdani@wapa.gov