El Segundo Energy Center Fast Start Experience Combined Cycle Users - - PowerPoint PPT Presentation

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Jul 11, 2023 489 likes •572 views

El Segundo Energy Center Fast Start Experience Combined Cycle Users Conference September 4, 2013 El Segundo Energy Center Fast Start Experience Overview Plant Design Variations from conventional CC & unique Fast Start Features

SLIDE 1

El Segundo Energy Center Fast Start Experience

Combined Cycle Users Conference September 4, 2013

El Segundo Energy Center Fast Start Experience

SLIDE 2

Overview

September 18, 2013 1 El Segundo Energy Center Fast Start Experience

Plant Design – Variations from conventional CC &

unique Fast Start Features

Construction/ Commissioning Experience
Key Influences

SLIDE 3

Definitions

September 18, 2013 2 El Segundo Energy Center Fast Start Experience

Fast Start Definition:

Time from “Start Initiation” to “Ready for unit

peration in AGC mode”

Important considerations: —Downtime interval – hot, warm, cold —Permissives —Unit Authority communications

Non-Spin Reserve Definition:

Amount of Net Generation at Point of Delivery within 10 min

SLIDE 4

September 18, 2013 3 El Segundo Energy Center Fast Start Experience

Air Cooled Heat Exchanger Condenser

HP Steam Steam

SGT6-5000F Backpressure (Positive Pressure) SST-800 backpressure industrial ST

Feedwater GT Exhaust

Single-pressure Non-Reheat HRSG (w/ conventional SCR & CO catalyst)

SLIDE 5

CT load ramp capability/ optimization
Fast ST Start-up mode – ST stress controller
Piping warm-up strategies
High-Capacity attemperators
Fast Start HRSG HP Section technology
Permissive requirements
Air purge credits
By-pass System

Fast Start Design Features

September 18, 2013 4 El Segundo Energy Center Fast Start Experience

SLIDE 6

Design issues
QA/ QC during design/ construction to

accommodate large temperature transients

Component testing
Commissioning process
Performance testing

Construction/ Commissioning / Testing

El Segundo Energy Center Fast Start Experience September 18, 2013 5

SLIDE 7

10 min “non-spin reserve” period

—Start Permissives, Attainment of purge credit —Controls

Steam Turbine and warm-up and attainment of

AGC condition

—ST Stress Controller – Bypass operation —Controls —Valve Tuning/ Operation

Key Influences

El Segundo Energy Center Fast Start Experience September 18, 2013 6