Power Plant Construction and QA/QC

Section 2.2– Basic Power Plant Design

Engineering Technology Engineering Technology DivisionDivision

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Overview

Section 2.2– Basic Power Plant Design

• Introduction

• Feasibility Studies

• Design Priorities

• Power Plant Design

• Combined Cycle Plants

• Cogeneration Plants

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Introduction

Section 2.2– Basic Power Plant Design

• Type of Power Plant

• Electric Production

• Steam or Hot Water Heating

• Cogeneration Plant – Steam and Electric

• Combined Cycle – Steam and Gas Turbines

• CPCC – Both Cogeneration & Combined Cycle

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Introduction

Section 2.2– Basic Power Plant Design

• Basics

• Power Plant Type

• Gross Costs

• Need – 4 gas stations at one intersection

• Fuel Type and Location

• Disposal

• Construction

• State Laws

• Capacity Factor

• Maintenance

• Life Time

• Water Source

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Introduction – Costs per MWH

Section 2.2– Basic Power Plant Design

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Feasibility Study - Screening

Section 2.2– Basic Power Plant Design

•Objectives–Provide tribal investment opportunity (diversification)–Provide tribal employment opportunities–Enhance economics of other tribal operations (fishery, headquarters campus, future industrial/energy park)

•Resources–Limited land–Poor wind, geothermal and solar potential–Strong logging and forest products industry in the region

•Markets–Wisconsin regulations prohibit retail power sales–Fishery, tribal headquarters campus and casinos are potential users of waste heat–State has initiatives to mandate accelerated use of renewable energy

•Conclusion–A biomass renewable energy project based on burning residues and waste from logging and forest products manufacturing operation is consistent with tribal objectives and resources, and consistent with state renewable energy initiatives.

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Section 2.2– Basic Power Plant Design

Feasibility Study - Feasibility• Identification of potential power purchasers and assessment of level of

interest• Resource assessment (sources, volumes, reliability, pricing, fuel value,

current uses)• Fuel supply strategy (for biomass projects)• Candidate technology assessment (equipment manufacturers, experience,

fuel compatibility, impacts, site requirements, preliminary economics screening)

• Project structure strategy (ownership, operation and staffing responsibility, etc.)

• Market development strategy (regulatory constraints, mandates, incentives, transmission constraints, competition)

• Preparation of detailed site selection criteria (“musts and wants” re: proximity to sales points, proximity to fuel source, transportation infrastructure, utility infrastructure, environmental considerations, land and buffer requirements, etc.)

• Site Screening / Site Selection (prime and back-up, if appropriate)• Permitting Strategy• Socio-economic and environmental impacts• Economics

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Design Priorities

Section 2.2– Basic Power Plant Design

Choice of Cycle – Addition or New

Steam vs. High temp Water – Capacity and Costs

Choice of Fuel – Heat, Disposal, Location, Costs

Choice of Auxiliaries – Essential vs. Nonessential

Instrumentation and Automatic Control – Efficiency, Personnel Reduction, Performance

Development Structures – IPP, Third Party, EPC

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Power Plant Design

Section 2.2– Basic Power Plant Design

• Considerations

• Load Forecasts

• Load Factor – Capacity Factor

• Peak Load – Maximum Need

• System Reserve

• Cold Reserve

• Spinning Reserve – Rolling Stock

• Plant Configuration

• Type

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Combined Cycle – Unfired HRSG

Section 2.2– Basic Power Plant Design

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Section 2.2– Basic Power Plant Design

Combined Cycle – Supplementary - Fired HRSG

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Section 2.2– Basic Power Plant Design

Furnace - Fired Steam Generator

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Cogeneration Plants – Power and Steam

Section 2.2– Basic Power Plant Design

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Cogeneration Plants – Power and Power

Section 2.2– Basic Power Plant Design

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Questions?

Section 2.2– Basic Power Plant Design