基于有载分接开关的变压器动作控制方法  

Control Method for Transformer Operation Based on on-load Tap-changer

作　　者：郑宇 黄剑 吴鑫剑 王祝露 姜楠楠 ZHENG Yu;HUANG Jian;WU Xin-jian;WANG Zhu-lu;JIANG Nan-nan(State Grid Zhejiang Electric Power Corporation Quzhou Power Supply Company,Quzhou 324000 China)

机构地区：[1]国网浙江省电力有限公司衢州供电公司,浙江衢州324000

出　　处：《自动化技术与应用》2025年第2期34-38,共5页Techniques of Automation and Applications

基　　金：国家电网公司科技项目(5804DY170912)。

摘　　要：为降低变压器无功功率损耗.本文通过调整有载分接开关.设计了一种变压器动作控制方法。在分析有载分接开关调控原理的基础上,采用大容量补偿技术检测变压器的无功功率、电流、电压、功率因数等被控量。打开变压器低压面双向晶闸管.连接补偿回路与高压面,通过高压面产生的励磁阻抗控制有载分接开关。利用变压器和开关组成“磁控开关”,可以通过双向晶闸管频繁投切,从而实现对变压器空载合闸与投切动作的控制。实验结果表明方法可以有效控制变压器的空载合闸与投切,且通过开关漏抗还可以完成补偿电容投切操作。In order to reduce the reactive power loss of transformer,this paper designs a transformer action control method by adjusting the on load tap changer.Based on the analysis of the regulation principle of on load tap changer,the large capacity compensation tech-nology is used to detect the reactive power,current,voltage,power factor and other controlled variables of the transformer,open the two-way thyristor on the low voltage side of the transformer,connect the compensation circuit with the high voltage side,and control the on load tap changer through the excitation impedance generated by the high voltage side.The"magnetic switch"com-posed of transformer and switch can be used to control the no-load closing and switching of transformer through frequent switch-ing of bidirectional thyristor.The experimental results show that this method can effectively control the no-load closing and switching of the transformer,and can also complete the switching operation of the compensation capacitor through the leakage re-actance of the switch.

关 键 词：变压器 投切动作控制 无功补偿 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]