负荷模型对异步联网交直流系统频率稳定性的影响  

Load Model for Effect of Frequency Stabilization on AC-DC System of Asynchronous Interconnection

作　　者：司大军 钱迎春 孙士云[2] 陈春敏[2] 安德超 孙德娟[2] SI Dajun QIAN Yingchun SUN Shiyun CHEN Chunmin AN Dechao SUN Dejuan(Power grid planning research center of Yunnan power limited liability company, Kunming 650011, China Faculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming 650500, China)

机构地区：[1]云南电网有限责任公司电网规划研究中心,昆明650011 [2]昆明理工大学电力工程学院,昆明650500

出　　处：《云南电力技术》2017年第4期62-65,共4页Yunnan Electric Power

摘　　要：在2016年南方电网异步联网背景下,依据云南电网各行政地区的负荷构成和比例,将负荷分为工业居民类、工业居民农业类、高耗能工业类、商业居民类等四大类。在充分分析静态负荷模型、考虑配电网络负荷模型和含感应电动机的综合负荷模型等三类负荷频率特性的基础上,采用电力系统暂态仿真程序PSD—BPA,建立云南电网分区、分类负荷详细仿真模型。研究直流闭锁等大扰动下,以上三类负荷模型对云南电网系统暂态频率稳定性的影响。研究结果表明,采用含感应电动机的综合负荷模型在大扰动下频率变化值最大,其次分别为静态负荷模型和考虑配电网络负荷模型;采用静态负荷模型频率恢复较快,其次分别为含感应电动机的综合负荷模型和考虑配电网络负荷模型。In the background of asynchronous interconnection of China Southern Power Grid in 2016, we can divide the load into four categories including industrial residents, industrial residential agriculture, high energy consumption industry and commercial residents which based on the structure and perception of load in all administrative region. The paper analyzes the mechanism of static load model considering frequency characteristics, load model considering distribution network, synthesis load model containing induction motor.The power system transient program PSD- BPA is used for modeling load of different area and category in Yunnan grid.When the UHV PuQiao line occurs unipolar DC blocki ng fault or bipolar DC blocking fault,we analyze how the stable load model,load model considered ditribution network and synthen tic load considered inductive motor influence the transient frequency stability of Yunnan grid. The results show that the Use contain comprehensive load model of induction motor under large disturbance frequency variation value maximum, the second respectively static load model and considering the distribution network load mode. Frequency static load model is adopted to recover quickly, the second respectively, including comprehensive load model of induction motor model and considering the distribution network load model.

关 键 词：异步联网 负荷模型 暂态频率稳定 

分 类 号：TM712[电气工程—电力系统及自动化]