摘要
低压台区普遍存在供电半径长、三相不平衡的特征,且对于包含大容量感应电动机负载的低压台区,电动机起动容易引发低压台区的电压跌落,恶化低压台区整体的电压质量。为此提出一种动态电压特性分析方法,首先建立低压台区三相潮流模型,其次考虑感应电动机的动态过程,提出计及感应电动机的低压台区动态电压分析方法,采取交替迭代法进行求解,能计算得到动态电压曲线,无需依赖时域仿真。最终通过算例验证了该方法的有效性,可为低压台区电压质量分析决策提供参考。
Low-voltage station area generally have the characteristics of long power supply radius and three-phase imbalance.For low-voltage station area with large capacity induction motor load,motor starting is easy to cause voltage drop in low-voltage stations and deteriorate the overall voltage quality of low-voltage stations.In this paper,a dynamic voltage characteristic analysis method is proposed.Firstly,a three-phase power flow model in the low-voltage station area is established.Secondly,considering the dynamic process of the induction motor,a dynamic voltage analysis method in the low-voltage station area considering the induction motor is proposed.The alternating iterative method is used to solve the dynamic voltage curve without relying on time domain simulation.Finally,an example is given to verify the effectiveness of this method,which can provide a reference for the analysis and decision-making of voltage quality in low-voltage station area.
作者
林堉澍
杨家豪
罗伟哲
LIN Yushu;YANG Jiahao;LUO Weizhe(Xiamen University Tan Kah Kee College,Zhangzhou 363105,China)
出处
《电工技术》
2023年第7期56-59,共4页
Electric Engineering
基金
漳州市自然科学基金项目(编号ZZ2019J28)
厦门大学嘉庚学院大学生创新创业训练计划项目(编号202213469149)。
关键词
低压台区
感应电动机
动态电压分析
三相潮流计算
low-voltage station area
induction motor
dynamic voltage analysis
three phase power flow calculation
