基于同调机群识别的动态等值方法的工程应用

在PSS/E环境下建立了大规模电力系统的动态等值模型,动态等值包括发电机同调机群的识别、同调机的聚合和网络化简.发电机同调机群的识别采用时域仿真方法,同调机的聚合采用经典模型,网络化简采用拓扑化简.以华东电网为例,阐述了等值系统的建立过程,并对等值系统和原型系统进行了仿真分析和比较,仿真结果表明,等值系统可以很好地再现原型系统的动态特性.

APPLICATION OF DYNAMIC EQUIVALENCE BASED ON IDENTIFICATION OF COHERENT GENERATOR GROUP IN ENGINEERING

In the program PSS/E the dynamic equivalent model of large-scale power system is established, in which the identification of coherent generator group, aggregation of coherent generators and power network reduction are included. Coherent generators are identified by means of time domain simulation, classical model is applied to aggregation of coherent generators and topological reduction is used for power network reduction. Taking East China power grid for example, the process of establishing equivalent system is expounded, the equivalent system and original system are simulated respectively, and their simulation results are compared. Simulation results show that the equivalent system can well reappear the dynamic characteristics of original system.