电力系统保护与控制Issue(13)：82-87,6.
计及分布式电源接入的配电网状态估计
State estimation of distribution network involving distributed generation
摘要
Abstract
In order to adapt to the requirement that distributed generations access distribution network with a small quantity of measuring equipment, based on the forecasting of wind power and photovoltaic generation, a weighted least squares state estimation model with constraint condition is proposed by regarding the distributed generations’ power forecasting result and"virtual"reactive power as pseudo measurement. In the model, Jacobian matrix is revised by the reactive-voltage characteristic of asynchronous wind turbine, the equality constraint of photovoltaic power generation system’s zero reactive injection is used to revise the result of state estimation. To ensure the state estimation’s numerical stability, singular value decomposition is used to solve the model. Simulation result of IEEE33 node example indicates that this model integrates distributed generations’ own characteristics with weighted least squares state estimation, which reflects the distributed generation’s output more accurately, and improves the precision of state estimation without addition of measuring installation.关键词
配电网/状态估计/分布式电源/“虚拟”伪测量/奇异值分解Key words
distribution network/state estimation/distributed generation/"virtual" pseudo measurement/singular value decomposition分类
信息技术与安全科学引用本文复制引用
王韶,江卓翰,朱姜峰,王洋,董光德..计及分布式电源接入的配电网状态估计[J].电力系统保护与控制,2013,(13):82-87,6.基金项目
输配电装备及系统安全与新技术国家重点实验室自主研究项目（2007DA10512709212）；中央高校基本科研业务费资助项目 （）
