配变-电容器组微冲击电压无功综合控制  

Distribution Transformer-Capacitor unit Micro-impact VQC

作　　者：马洁[1] 刘宪林[1] 武东亚[2] 

机构地区：[1]郑州大学电气工程学院,郑州450001 [2]河南电力调度通信中心,郑州450052

出　　处：《中国农村水利水电》2009年第7期125-128,共4页China Rural Water and Hydropower

摘　　要：作为配电网的终端,配变-电容器组的电压无功控制是一个关系供电质量、降低线损和系统电压稳定的重要问题。变压器分接头切换和补偿电容器投切的传统手段由于切换冲击及开关动作频度的限制,影响了电压无功控制的及时性。为了给配电网电压无功控制提供具有高频次和微冲击切换特性的控制终端,对一种配变-电容器组电压无功综合控制方案进行了研究。该方案的配变分接头切换和补偿电容器的分组投切均采用交流过零型固态继电器;电容器采用8∶4∶2∶1不等容分组方式;电压无功协调控制策略采用一种改进的"九区图"。仿真表明,该配变-电容器组电压无功控制电路和策略可以很好地实现配变分接头和补偿电容器的微冲击切换。As a distribution network terminal, the voltage and reactive power control of distribution transformer-capacitor unit is a relationship between the quality of power supply, reduce line losses and the system voltage stability of important issues. Traditional means of the transformer tap switching and compensation capacitor switching has been eliminated, due to the impact of switching and switch frequency restrictions affect the timeliness of voltage and reactive power control. In order to provide distribution network VQC with high-frequency switching characteristics and the micro-impact switches of control terminal, a distribution transformer-capacitor unit voltage and reactive power integrated control programmes have been studied. In the programme, taps and capacitor switches have adopted AC-zero-solid-state relays; capacitor uses capacity ranging from groups of 8 ： 4 ： 2 ： 1; voltage and reactive power coordination control strategies using an improved ＂nine-zone diagram＂; Simulation shows that the distribution transformer-capacitor unit VQC circuit and strategy can reach the goal of taps and compensation capacitors micro-impact switching.

关 键 词：配变-电容器组 微冲击 固态继电器 电压无功综合控制 

分 类 号：TM762[电气工程—电力系统及自动化]