Power Partners
Resource Guide

PPRG Home
Add PPRG Content
Abt. Power Partners

Upgrading Controls

     
 

Navigate the
Resource Guide:

 

Table of Contents

PPRG Contents

Major Topic Sections

Fossil-fueled Power
Non-Fossil Generation
End-Use Efficiency
Electricity T&D
Carbon Sequestration
Non-CO2 Reductions
Other GHG Reductions

Related topics in this section

Up to Section Head
Advanced Coal Power
Turbine Efficiency
Repowering
Cogeneration & CHP
Natural Gas
Upgrading Controls
Plant Equip. Upgrades
Coal Prep & Handling

 

 Upgrading Plant Instrumentation and  Controls

 
 Background


Instrumentation and control (I&C) is an integral part of any power station. New coal-fired power plants are built with modern, advanced systems. A modern, advanced I&C system plays a major role in the profitable and safe operation of a plant by achieving maximum availability, reliability, flexibility, maintainability and efficiency.

Recent advances in control technology, on-line testing, and performance monitoring can help a power plant improve efficiency, maintain a high availability factor, and generally improve plant operations. A large number of existing facilities have also been retrofitted with advanced digital systems in many countries, throughout the world. Upgraded instrumentation and control systems, used in conjunction with new sophisticated software programs, allow plant operators to identify factors affecting equipment performance more quickly and accurately. Upgrading the instrumentation and control systems of an older power plant can have the following benefits:

  Improved operating flexibility, i.e., the ability to meet a wider range of operating conditions more effectively
  Reduced maintenance costs through better monitoring of plant equipment condition and an enhanced ability to detect equipment malfunctions
  Reduced emissions of greenhouse gases and air pollutants through better control of the combustion process and of environmental control equipment
  Extended equipment life through the reduction of excessive equipment operating stress


However, some plants continue to operate with pneumatic/analogue systems and should be upgraded if the facility is to continue operating safely and profitably. The average lifetime of modern I&C systems ranges between 10 and 15 years. Payback of an upgrade has been evaluated from 2 years up to the lifetime of the upgrade.

Click here Comments/Feedbackor on "Add PPRG Content" above to offer your comments to the PPRG.

 

 Power Partners Projects

(none yet submitted)

Click here Projector on "Add PPRG Content" above to add your organization's projects.

 

 References, Sources, and Other Useful Data


Asia-Pacific Partnership on Clean Development & Climate, "Google Groups: APP Power Gen – Combustion Optimization,"
http://groups.google.com/group/APP_PowerGen-CombustionOptimization?lnk=srg&hl=en

As an activity of the Asia-Pacific Partnership on Clean Development and Climate, various Google Groups have been established to provide a ready means to communicate and share information on specific topics in power generation. This Google Group is "APP Power Gen Project – PGT-06-7 Combustion Optimization in Coal-Based Power Plants". Combustion optimization in coal fired steam generators is one of the most important processes which helps steam generators to operate at maximum efficiency. Un-optimized combustion affects many performance parameters such as increased unburned carbon in the fly ash, distorted oxygen profile at steam generator outlet, uneven steam temperature profiles, etc. Japanese and USA systems will be studied to determine potential applicability to Indian coals.

Asia-Pacific Partnership on Clean Development & Climate, "Google Groups: APP Power Gen – Maintenance Prioritization,"
http://groups.google.com/group/APP_PowerGen-MaintenancePrioritization?lnk=srg&hl=en

As an activity of the Asia-Pacific Partnership on Clean Development and Climate, various Google Groups have been established to provide a ready means to communicate and share information on specific topics in power generation. This Google Group is "APP Power Gen Project – PGT-06-10 Risk Evaluation and Prioritization (REAP) for Maintenance and Renovation & Modernization (R&M) of Power Plants". In any power plant, various pieces of equipment work together to generate power. Failure of a single link can lead to a loss in generation. The frequency of these failures is determined by the equipment, and depends on its location, operational parameters, constructional features, etc. The cost of the equipment or part thereof also varies. Hence, it shall be our endeavor to prioritize the replacement of the equipment based on cost, down time cost, frequency of occurrence of such failures, etc., to improve plant availability, reduce forced outages, and facilitate implementation of renovation & modernization of power plants.

Electric Power Research Institute, “2007 Portfolio: 68 I&C and Automation for Improved Plant Operations”
http://mydocs.epri.com/docs/Portfolio/PDF/2007_P068.pdf

Instrumentation and control (I&C) systems in power plants are vital to reliable, efficient, and environmentally sound plant operation. These heavily computerized systems are evolving rapidly, and it is very difficult for power industry personnel to stay abreast of the latest developments. The Electric Power Research Institute’s (EPRI’s) collaborative research program helps power producers direct future I&C developments and obtain quick, reliable solutions to plant problems. In addition, the program addresses longer-term, strategic issues articulated at EPRI advisory meetings, industry forums, and workshops. Participants can take advantage of I&C Center resources for demonstrating EPRI-developed deliverables, technology transfer and training, and on-site I&C system assessments. Furthermore, because the program traditionally attracts a large amount of project participation, and generalized results from those projects are available to all program participants, members usually receive significant additional value.

Federation of Electric Companies of Japan, "Green Handbook Peer Review: Instructions for the Operation & Maintenance Technologies and Efficiency Improvements for the Coal fired Power Plants", (April 2007)
http://www.fepc.or.jp/english/environment/asia-pacific/green_handbook_peer/index.html

As part of the Asia Pacific Partnership effort to enhance the efficiency of coal fired power plants, Japan has developed a compilation of background material, operational experience and checklists to identify potential efficiency upgrades. This “Book” and associated check lists form the basis of the Asia Pacific Partnership “Peer Reviews”. The textbook describes important issues associated with maintaining, and enhancing, levels of heat efficiency at a coal-fired thermal power plants, and constitutes a summary of matters of which all technicians working in power generation plants need to be aware. The 482 pages in this manual cover in depth the best practices for thermal power plants for functional and operational control, maintenance and efficiency control, and environmental preservation.

International Energy Agency, IEA Clean Coal Centre, “Upgrading instrumentation and control in coal-fired power plant" (CCC/80, February 2004)
http://www.iea-coal.co.uk/publishor/system/component_view.asp?LogDocId=81096

The average lifetime of modern I&C systems ranges between 10 and 15 years. Payback of an upgrade has been evaluated from 2 years up to the lifetime of the upgrade. In this report we investigate the effects of upgrading I&C in coal-fired plant and attempt to evaluate the financial and/or environmental benefits where possible.

University of Kentucky Center for Applied Energy Research, “Upgrading Instrumentation and Control in Coal-Fired Plant” (January 2004)
http://www.caer.uky.edu/iea/ieaccc80.shtml

A modern, advanced I&C system plays a major role in the profitable and safe operation of a plant by achieving maximum availability, reliability, flexibility, maintainability and efficiency. These systems can also assist in maintaining emissions compliance. However, some existing plants continue to operate with pneumatic/analogue systems and should be upgraded if the facility is to continue operating safely and profitably. The average lifetime of modern I&C systems ranges between 10 and 15 years. Payback of an upgrade has been evaluated from 2 years up to the lifetime of the upgrade. This report investigates the effects of upgrading I&C in coal-fired plant and attempts to evaluate the financial and/or environmental benefits.


Click here Add PPRG Contentor on "Add PPRG Content" above to add additional references and sources.

 

PPRG Home Add PPRG Content Abt. Power Partners

Website prepared for the Edison Electric Institute
and the Electric Power Industry Climate Initiative

Prepared by Twenty-First Strategies, LLC.
Copyright © 2009.  All rights reserved.
Last revised: Dec. 11, 2009.