电力电缆分布电容对电力用户功率因数的影响  

Effect of Power Cable Distributed Capacitance on Power Consumers Power Factor

作　　者：冯金博 吴羽生 FENG Jinbo;WU Yusheng(Chengdu Architectural Design and Research Institute Co.,Ltd.,Chengdu 610041,China;Jizhun Fangzhong Architectural Design Co.,Ltd.,Chengdu 610000,Chin)

机构地区：[1]成都市建筑设计研究院有限公司,四川成都610041 [2]基准方中建筑设计股份有限公司,四川成都610000

出　　处：《现代建筑电气》2025年第1期10-13,共4页Modern Architecture Electric

摘　　要：分析功率因数的不同计量方式,结合工厂运行状况,推导电力用户全天功率因数表达式。基于多导体传输线理论,建立电力电缆分布参数模型,计算电力电缆分布电容。计算电力用户全天平均功率因数理论值,分析电力用户功率因数的影响因素。理论分析表明,在动力负荷空载概率较高时,电力电缆分布电容的容性无功功率对电力用户功率因数有很大影响。The different measurement methods of power factor are analyzed,and the daily power factor expression for power consumers is derived by integrating factory operating conditions.A distributed parameter model of power cables is established based on multi-conductor transmission line theory,and their distributed capacitances are calculated.The theoretical value of the daily power factor for power consumers is computed,and the influencing factors of their power factor are investigated.It shows that the capacitive reactive power originating from the distributed capacitance of power cables exerts a significant influence on the power factor of power consumers when motor loads exhibit a high probability of operating under no-load conditions.

关 键 词：电力用户 电力电缆 分布电容 功率因数 无功功率 

分 类 号：TU852[建筑科学]