电网联络线路负线损原因分析及应对策略  

Analysis and Countermeasures of Negative Line Losses in Power Grid Link Circuits

作　　者：陈文中 洪元瑞 张金丽 陈俊杰 柳永玉 冯茗俊 杜炯 CHEN Wenzhong;HONG Yuanrui;ZHANG Jinli;CHEN Junjie;LIU Yongyu;FENG Mingjun;DU Jiong(State Grid Electric Power Research Institute,SMEPC,Shanghai 200437,China;East China Branch,State Grid Corporation of China,Shanghai 200120,China;Shandong Taikai Instrument Transformer Co.,Ltd..Taiwan 271000,Shandong Province,China;State Grid Shinan Power Supply Company,SMEPC,Shanghai 2001100,China)

机构地区：[1]国网上海市电力公司电力科学研究院,上海200437 [2]国家电网公司华东分部,上海200120 [3]山东泰开互感器有限公司,山东泰安271OOO [4]国网上海市电力公司市南供电公司,上海201100

出　　处：《电力与能源》2019年第6期704-706,716,共4页Power & Energy

摘　　要：针对某电网跨省五回联络线出现负线损的问题,结合一次网架结构,研究分析其电气连接方式、运行环境等方面的共同特点,同步采集每一回联络线两侧关口计量点的P,Q,U和I实时运行数据,通过大量数据统计分析和运行环境仿真计算,选取具有代表性的线路作为研究对象,从计量系统综合误差、同塔电磁耦合影响潮流分布入手,分析负线损原因并提出解决问题的建议和办法。In view of the problem of negative line losses in the power grid trans-provincial five link circuits, this paper combines with primary grid structure, studies and analyzes the common features of its electrical connections and operating environment, and simultaneously collects the real-time operational data for measuring points P, Q, U and I on both sides gateway of each link circuit. Through the statistic analysis of mass data and simulation calculations of operating environment, it selects the representative line as a research object, proceeds from the measurement system integrated error, the same tower electromagnetic coupling influencing the current distribution, analyzes the cause of negative line loss and proposes suggestions and countermeasures.

关 键 词：联络线路 负线损 计量误差 电磁耦合 应对策略 

分 类 号：TM732[电气工程—电力系统及自动化]