核电厂水压试验泵汽轮机组运行研究

福岛核事故以后,核电厂应对全厂断电事故的能力得到了业界的广泛关注,而水压试验泵汽轮机组在全厂失电的情况下,能够维持一回路压力边界完整以及向机组运行所需仪表供电,对于电厂安全具有重要意义.文章研究典型的600 MW压水堆核电厂水压试验泵汽轮机组系统（系统代码：LLS）原理结构、重要功能、正常运行的工艺流程等方面.同时,还介绍了小汽机的运行工况和试验情况.最后,从电厂实际运行的角度出发,对小汽机在核电厂实际运行中的一些问题进行分析,并依据分析结果探讨了解决方案.

Study on Hydro-test Pump Turbine Operation of Nuclear Power Plant

Since the Fukushima accident, the capacity of the nuclear power plant in station blackout accident has been widely concerned in the industry. The hydro-test pump turbine can maintain the integrity of a loop pressure boundary and to supply power to instruments needed for nuclear power plant operation in case of station blackout. It is of great significance for the safety of nuclear power plant. This paper studies the principle struture, important function and normal operation of the hydro-test pump turbine （Code： LLS） of a typical 600 MW PWR nuclear power plant. At the same time, operating conditions and tests for small steam turbine are introduced. Finally, from the actual operation point of view, some problems in the actual operation of small turbine in a nuclear power plant are analyzed, and solutions are discussed based on the analytical results.