基于在线频率响应分析的发电机电力系统稳定器(PSS)参数整定试验

用在线频率响应分析方法对徐州华润发电厂300MW发电机励磁系统的电力系统稳定器(PSS)参数进行了优化.根据无PSS时的励磁系统频率响应特性试验结果对PSS的参数进行了整定,并对整定后的系统进行了负载阶跃和反调试验.试验结果表明,整定后的PSS参数有很强的适应性,对0.1～2.0Hz的低频振荡有很好的抑制作用,具有较好的阻尼效果,而且将仿真与现场试验相结合的频率响应特性分析方法的物理概念清晰,是设置和优化微机励磁调节器参数的一种有效方法.

PARAMETER SETTING TEST OF POWER SYSTEM STABILIZER FOR 300MW GENERATOR IN HUARUN POWER PLANT

Using online frequency response analysis method the parameters of power system stabilizer (PSS) for the excitation system of 300MW generator in Huarun power plant are optimized. According to the test result of frequency response characteristic of the excitation system without PSS the parameters of the PSS are set and both step response test of the load and mis-reverse adjustment test for the excitation system after the setting are carried out. The test results show that the post-setting parameters of PSS possess good adaptability, and the PSS can effectively suppress the low frequency oscillation within the frequency range from 0.1Hz to 2.0Hz and possesses good damping action.In addition, the physical concept of the frequency response analysis method, which combines the on-site test and simulation, is clear and the presented method is an effective approach to set and optimize the parameters of microcomputer based excitation system.