Energy efficiency improvement in coal fired power plant through operational optimisation

Lang, Jason (2015) Energy efficiency improvement in coal fired power plant through operational optimisation. [USQ Project]

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Abstract

Energy consumption is a significant cost to all business with the countries large industrial plants consuming 75 % of all energy produced in Australia. This cost is not only a financial burden but it has an environmental cost. The energy consumption within coal-fired power stations that is directly associated with generation is called auxiliary power. Approximately 10 % of all power produced is used to drive power stations internal auxiliary power needs. It is the auxiliary power consumption at Tarong Power Station that is the focus of this dissertation.

This dissertation first seeks to understand the stations energy consumption through a comprehensive review of auxiliary power issues worldwide and the creation of control system tracking logic. The next stage of the dissertation then models that consumption in MATLAB and finally proposes ways in which to reduce that consumption without capital investment.

The auxiliary power consumption within Tarong Power Station is recorded by two energy meters per unit on the main high voltage unit transformer feeds. The energy consumed is then reported each week as a percentage of unit generation. It is at this high level that the consumption is currently understood. This project has created energy tracking logic in the unit control system, a Siemens T3000 installation, to provide additional usage knowledge. A number of MATLAB models have been produced. The first of these reproduces the energy usage map of a running unit. The final Simulink model allows modification of the major component loading to trial energy reduction options. Using this model a reduction of 10 % at low loads has been achieved. The accuracy of the energy tracking logic and models created is proven to be within 2 % of the field energy metering.

This dissertation has concluded that meaningful energy efficiency improvement can be obtained through operational improvement at Tarong Power Station.


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Item Type: USQ Project
Item Status: Live Archive
Additional Information: Bachelor of Electrical Electronic Engineering project
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Supervisors: Hills, Catherine
Date Deposited: 07 Jun 2016 00:46
Last Modified: 07 Jun 2016 00:46
Uncontrolled Keywords: Energy Efficiency, Auxiliary Power, Coal-Fired, MATLAB
Fields of Research : 09 Engineering > 0906 Electrical and Electronic Engineering > 090607 Power and Energy Systems Engineering (excl. Renewable Power)
URI: http://eprints.usq.edu.au/id/eprint/29268

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