配电网串联补偿装置稳态和暂态特性研究  

Research on Steady and Transient Characteristic of Series Compensation Device in Distribution Network

作　　者：冯南战 张金凤[2] 郭洁[2] 

机构地区：[1]陕西省电力公司,西安710048 [2]西安交通大学电气工程学院,西安710049

出　　处：《高压电器》2017年第11期51-56,62,共7页High Voltage Apparatus

摘　　要：电容串联补偿技术应用于配电网可以实现对线路无功正补偿、无时延、有效改善线路沿线电压质量,与传统的补偿技术和调压技术相比,具有负荷自适应性和良好的操作性。但由于配电网的复杂性和差异性,要实现电容串联补偿的合理配置必须掌握串联补偿装置(以下简称串补)稳态与暂态特性,补偿容量和最佳安装位置以及不同因素的影响规律。文中应用EMTP电磁暂态程序建立了典型辐射式结构的10 kV配网串补仿真模型,对输电导线直径、负荷容量及功率因素、串补容量及安装位置等对沿线路电压分布的影响进行了全面仿真分析,研究了三相短路故障时串补装置内部的电磁暂态过程,给出了旁路断路器动作时间与金属氧化物限压器(MOV)配合参数、吸收容量的关系。Application of series capacitor compensation used in distribution line can bring about positive and no- time-lag reactive compensation, and can improve the voltage quality of the line. It is load-adaptive and has the good operability. Because of the complexity and otherness of distribution lines, it is needed to know well the steady and transient characteristics, capacity, position, influencing factors about the series capacitor compensation to achieve the good result. This paper establishes a typical model of the series capacitor compensation for 10 kV radial distri- bution line using EMTP, and makes systematic effective analyzes such as wire diameter, load-capacity and cosφ, capacity and position to the voltage along the line. It gives the transient process results in the inside of compensa-tion device under 3 phase breakdown, and the relationship between close-time of bypass circuit breaker and absorption capacity of MOV.

关 键 词：串联补偿 数值仿真 电磁暂态 MOV 配电线路 

分 类 号：TM761.12[电气工程—电力系统及自动化]