电网技术Issue(8)：2201-2206,6.
基于广域量测数据的电力系统动态频率分析方法
A Wide-Area Measurement Data Based Method for Power System Dynamic Frequency Analysis
摘要
Abstract
Based on wide-area measurement system (WAMS) a method to obtain power system dynamic frequency is proposed. In the proposed method the linearization of power system is performed and utilizing the wide-area measurement data right after the disturbance the Jacobian matrix is formed, then the state equation of power system is solved and the expressions of time-domain functions of generators frequency curves in the power system can be directly calculated. In the proposed algorithm the impacts of dynamic characteristics of governor, network loss and load variation on center of inertia (COI) frequency are considered, and step-by-step integration is not to be implemented. Applying the proposed algorithm to WSCC 3-machine 9-bus system and modified IEEE 50-machine 145-bus system and comparing the obtained results with those of the two examples simulated by PSS/E, it is shown that using the proposed algorithm the obtained COI frequency function is of high accuracy and can describe dynamic characteristic of frequency at COI of power system well.关键词
广域量测系统/状态方程/惯性中心频率/频率动态特性Key words
wide-area measurement system (WAMS)/state equation/center of inertia (COI) frequency/dynamic characteristic of frequency分类
信息技术与安全科学引用本文复制引用
刘克天,王晓茹..基于广域量测数据的电力系统动态频率分析方法[J].电网技术,2013,(8):2201-2206,6.基金项目
国家自然科学基金项目(90610026)。Project Supported by National Natural Science Foundation of China(NSFC)(90610026) （90610026）
