A Study On Performance Monitoring And Optimization For A Coal-Fired Power Generating Unit

The urgent task for a thermal power plant is to improve its economy and reduce its costs under the situation of competitive power market. So it is very important to monitor the performance and optimize the operation for a coal-fired power generating unit.This thesis focus on a large coal-fired power generating unit, The primary research works are summarized as follows.1.The thermal economic performance index, mathematic models and calculating methods are analyzed respectively. The heat balance of steam-turbine cycle is calculated by using matrix method which has the advantage of being easily programmed.2.The energy consumption difference analysis relate to some key operating parameters and some equipment conditions are studied deeply. The expected values are determined by combining the design data, the performance test data and the data obtained from off-design calculation. Both the method of difference analysis and the method of equivalent enthalpy drop are utilized to analyze the consumption difference.3. The operating mode and cold-end system of a power generating unit are optimized detailedly. The energy consumption difference analysis and operation optimization are proceeded for some key auxiliary facilities.4. The software of performance monitoring and optimization for a coal-fired power generating unit are developed by the Web mode on the MIS network .The software has been commissioned on the Daqi power plant in Inner Mongolia. The system plays an important role in helping operators to adjust the operation and providing the managing staff with the unit conditions in time.