PSS就地相位补偿法的模型和理论

为降低稳定器设计在实际大系统中应用的难度和现场调试的困难,提出应用于多机电力系统稳定器设计的就地相位补偿法的模型和理论。在多机电力系统中,首先推导得到稳定器对线路功率振荡贡献的直接阻尼;在此基础上,参照相位补偿的原理,提出稳定器设计的就地相位补偿设计。该方法能够保证稳定器向线路功率振荡提供正阻尼,从而有效抑制系统中的线路功率振荡。而稳定器的就地补偿设计是在附加稳定器的电力装置的局部线性化模型上进行的,无需建立多机电力系统的全系统线性化模型,故而设计简单、实用。

Model and Theory of PSS Localized Phase Compensation Method

In order to reduce the difficulty of stabilizer design and field tuning in large-scale power systems,this paper proposed the model of and theory of a new method of localized phase compensation to design a stabilizer in a multi-machine power system.The proposed method was based on the examination of direct damping contribution from the stabilizer to the line power oscillations in the multi-machine power system.The localized design can ensure the stabilizer to provide positive damping to and effectively suppress the line power oscillations.The proposed method was carried out on the basis of the local linearized model of the power equipment attached with the stabilizer.There is no need to establish the linearized model of the entire multi-machine power system.