Optimization of Auxiliary Power Consumption of Combined Cycle Power Plant

摘要

Energy requirement increases day by day. Thermal power plants are the measure source of energy for electricity generation. They are also the measure polluter of the environment. In order to reduce environmental pollution either energy consumption should be reduced or energy should be generated with higher conversion efficiency. In thermal power plants part of energy generated by the plants is being consumed by different auxiliaries. The power consumption by these auxiliaries is very high due to poor operation or bad design of the equipments. There are two different ways to improve the efficiency either by efficient operation or by facility conversion. The pumps and compressors are the main auxiliaries which consumes sizable power produced by thermal power plants. Here an attempt is made to improve the efficiency of above mention auxiliaries. To improve the performance of the pumps various methods have been suggested in the present study. This includes impeller trimming, de-staging and installation of variable frequency drives(VFD). Similarly methods for improving compressor efficiency have also been suggested in the present study. Before modifications actual data are collected for pumps and compressors. Power and efficiency are calculated and same are compared with ideal values reported in supplier manuals. On the basis of discrepancies in above data, methods for performance improvements are suggested.