The Study Of The Power System Stabilizer And It’s Application In Shaoguan Power Plant

With the rapid development of power system scale and capacity, more and more largecapacity generators, power supply area expands unceasingly, space truss structure is more andmore complex. Large power grid intrinsic to the weak links of power systems weaksometimes produce between natural damping makes power system low frequency oscillationphenomena. In addition, the voltage deviation adjustment according to the proportion of typerapid popularity using excitation system, result in mechanical and electrical power systemoscillation damping, further aggravated the situation.60s, the western United States occurredin the operation of the power system in low frequency power oscillation, cause theovercurrent trip tie, then in Europe, Japan and other countries, also has the low frequencyoscillation of power transmission line, events, caused the countries all over the world paidattention to by the power of science and technology personnel. Power system stabilizer (PSS)is one of the most widely used in the world, the most economic and the relatively maturegenerator excitation additional control technology. In power system stabilizer is the solutionto the power system low frequency oscillation is one of the important means.This paper firstly introduces the origin of the power system stability problems,elaborated the influence of generator excitation system of synchronous generator oscillationsand step for the whole system, the influence of damping torque/torque by means of lowfrequency oscillation theory and the analysis of the power system stabilizer, discussapplication at present, the development of the power system stabilizer, understand the variousdifferent models of power system stabilizer, analysis of principle and advantages anddisadvantages of various models and application situation.Finally combining with the different types of shaoguan power plant unit setting test workof the power system stabilizer was put into operation, further complete the study of powersystem stabilizer, setting test method to determine the power system stabilizer was put intooperation, and different types of units in shaoguan power plant, the setting of the powersystem stabilizer was put into the test data in detail analysis, setting parameters, based onactual test work observation PSS1A and PSS2B two types of power system stabilizer inshaoguan power plant practical application effect, confirmed in dealing with power systemlow frequency oscillation of power system stabilizer effect in practical application.