基于轨迹灵敏度的负荷分类  

A Method of Load Classification Based on the Trajectory Sensitivity

作　　者：郑晓雨[1] 贺仁睦[1] 马进[1] 唐永红[2] 

机构地区：[1]华北电力大学电力系统保护与动态安全监控教育部重点实验室,北京102206 [2]四川电力试验研究院,成都610072

出　　处：《电工技术学报》2010年第9期145-150,共6页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(50707009和50595410);教育部博士学位青年教师基金(20070079014);国家重点基础研究发展计划(973项目)(2004CB217901);"111"引智计划(B08013)资助项目

摘　　要：实测负荷建模当中负荷时变性对建模有重要的影响,而对负荷进行分类是消除负荷时变性的有效方法。将轨迹灵敏度方法应用到负荷分类当中,提出了一种新的负荷分类方法:首先将各条实测数据进行辨识得到相应参数,然后在同一电压激励下求取功率对模型中电动机参数的轨迹灵敏度;在分析灵敏度结果的基础上提出以电动机吸收无功对转子电阻的轨迹灵敏度的最大值作为分类依据对负荷进行分类。该方法与以往的分类方法相比具有简单、物理意义明确的优点,理论推导和实际数据都表明了该方法的有效性。Load time-variant characteristic has great impacts on load modeling. It is an effective way to classify the load data for eliminating that effect. In this paper,trajectory sensitivity is used in load classification and a new approach is proposed. In this method,load model parameters are first derived from the field measurement data,then,the trajectory sensitivities with respect to induction motor parameters under the same voltage disturbance are calculated. After the analysis of trajectory sensitivity results,the maximum value of the reactive power sensitivity with respect to rotor resistance of motor is proposed to be utilized in load classification. Comparing with other classification methods,this approach is simpler and has more clear mechanism meaning. The theory deduction and practical case shows its efficiency.

关 键 词：负荷建模 模型结构 实测数据 负荷分类 轨迹灵敏度 

分 类 号：TM714[电气工程—电力系统及自动化]