Generator Installed To The Reliability Of The Economic Analysis Of The Export Breaker

Reliability and economy is always an irreconcilable conflict for power system, especially for the application of generator circuit-breaker (GCB) in high capacity generators. The application of GCB can improve the reliability of the plant while it may also increase the investment. So it is really hard to make the decision. In order to make a reasonable decision, it is necessary to put forward a method which considers both reliability and economy.The thesis puts forward Total Annual Cost (TAC), based on the study in reliability and economy analysis of power system and the particularity of the research, a method adaptable to the research. TAC modifies Total Owing Cost (TOC) which is an existing reliability and economy evaluation method by considering the annual operation cost and equipment with various life spans and staged investment, and thus making the evaluation process more satisfy the real situation.The thesis studies the computation method of every item in TAC. It puts forward a reliability evaluation model which could simulate the operation of plant with or without GCB in RAMSES, a reliability evaluation program from RWTH Aachen University in Germany. The thesis also puts forward the computation method of operation cost by considering the difference between two schemes: one with GCB and the other without.TAC was applied to the reliability and economy evaluation for the scheme of two types of generator outlet design, and a program was then put forward.Finally, TAC was applied to the reliability and economy evaluation for the scheme of two types of generator outlet design of Lanxi Power Plant. The scheme with GCB is obviously better than the scheme without according to the result of the evaluation program.