含风电的电力系统不对称故障后机电恢复特性修正方法研究  

Research on mechatronics restoration method after asymmetric faults of wind power system

作　　者：王梦琦 李晓明[1] 李文臣[2] 郑惠萍 刘新元 黄彦浩[2] Wang Mengqi;Li Xiaoming;Li Wenchen;Zheng Huiping;Liu Xinyuan;Huang Yanhao(School of Electrical Engineering,Wuhan University,Wuhan 430072,China;State Key Laboratory of Power Grid Safety and Energy Conservation,China Electric Power Research Institute,Beijing 100192,China;State Grid Shanxi Electric Power Research Institute,Taiyuan 030001,China)

机构地区：[1]武汉大学电气工程学院,武汉430072 [2]中国电力科学研究院电网安全与节能国家重点实验室,北京100192 [3]国网山西省电力公司电力科学研究院,太原030001

出　　处：《电测与仪表》2019年第2期16-23,共8页Electrical Measurement & Instrumentation

基　　金：国家电网公司科技项目(XT71-16-023)

摘　　要：在发生不对称故障情况下,风电系统机电暂态仿真结果与电磁暂态仿真结果间存在较大的差异,严重影响了仿真系统稳定性评估的准确性。为减少在不对称故障情况下风电系统机电暂态仿真与电磁暂态仿真间的误差,文中提出了一种基于数据挖掘的风电系统机电暂态仿真恢复特性曲线修正方法,并给出了其机电仿真的主要误差评价指标。最后,以PSCAD/EMTDC上风电系统的电磁暂态仿真曲线为标准响应曲线,以PSASP上风电系统机电暂态仿真曲线为目标,通过构造相应的样本库和修正算例进行验证,仿真结果说明了所提出方法的有效性和评价指标的合理性。Under the condition of asymmetric fault,there is a large difference between the electromechanical transient simulation results of the wind power system and the electromagnetic transient simulation results,which seriously affects the accuracy of the stability evaluation of the simulation system.In order to reduce the error between electromechanical transient simulation of wind power system and electromagnetic transient simulation under the condition of system asymmetry,this paper presents a method to modify the characteristic curve of electromechanical transient simulation of wind power system based on data mining.And the main error evaluation indexes of electromechanical simulation are given.Finally,this paper takes the electromagnetic transient simulation curve of PSCAD/EMTDC as the standard response curve,and takes the PSASP wind power system electromechanical transient simulation curve as the goal,to verify through the construction of the corresponding sample library and correction examples.The simulation results show the validity of the proposed method and the rationality of the evaluation index.

关 键 词：风电系统 恢复特性 近邻搜索 信息融合 

分 类 号：TM216[一般工业技术—材料科学与工程]