考虑气象时空分布特性的输电线路模型和分析方法  

Transmission Line Model and Analysis Method Considering the Time and Space Distribution Characteristics of Meteorology

作　　者：王艳玲[1] 莫洋 韩学山[2] 孟祥星[3] 牛志强 Wang Yanling;Mo Yang;Han Xueshan;Meng Xiangxing;Niu Zhiqiang(School of Mechanical Electrical and Information Engineering Shandong University(Weihai)Weihai,264209 China;School of Electrical Engineering Shandong University Jinan,250061 China;National Grid Heilongjiang Electric Power Co.Ltd Harbin,150090 China;National Grid Weihai Power Supply Company Weihai,264209 China)

机构地区：[1]山东大学(威海)机电与信息工程学院,威海264209 [2]山东大学电气工程学院,济南250061 [3]国家电网黑龙江省电力有限公司,哈尔滨150090 [4]国家电网威海供电公司,威海264209

出　　处：《电工技术学报》2020年第3期636-645,共10页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金项目（41904169）;山东省科技发展计划项目（ZR2015ZX045）;威海市科技发展计划项目（2018DXGJ05）资助

摘　　要：架空线路沿线气象数据在时空分布上有着显著的变化,这对系统运行状态会产生重要影响。该文依据CIGRE标准热平衡方程,反复迭代求解输电线路导体温度;通过真实的气象数据对山东地区某220kV架空线路沿线气象数据的季节性变化和东北地区某500kV线路沿线气象数据的空间分布进行验证分析;建立计及气象参数时间分布特性的季节性模型,计及气象参数空间分布特性的平均值模型、权重平均值模型和线路分段模型;进一步以导体温度与线路参数的关系为纽带,建立计及气象数据时空分布的系统潮流模型和分解协调的求解算法。通过潮流计算及电网传输能力分析,表明架空线路导体温度有显著的时空变化特征,考虑气象参数的时空分布特性可有效提高电网状态分析的准确性。The meteorological data along the overhead line vary in time and space, which has an important influence on the operating state of the system. Based on the thermal balance equation of CIGRE standard, this paper iteratively solves the conductor temperature of transmission lines. Through the real weather data, the seasonal variation of the meteorological data of a 220 kV line in Shandong area and the spatial variation of meteorological data along a 500 kV line in Dongbei area are analyzed by examples. Considering the time distribution characteristics of meteorological parameters, a seasonal model is given. Considering the space distribution, the mean value model, the weight average value model and the line segmentation model are established. Further, based on the relationship between conductor temperature and line parameters, the system power flow model considering the time and space distribution of meteorological data and the decomposition coordination solution are establ ished. Through the power flow calculation and network transmission capability analysis, it shows that the conductor temperature of the overhead line has significant time and space variation characteristics. Considering the time and space distribution characteristics of meteorological parameters can effectively improve the accuracy of power grid state analysis.

关 键 词：输电线路 气象数据 导体温度 时空分布 潮流计算 PV曲线 

分 类 号：TM751[电气工程—电力系统及自动化]