摘要
配电变压器作为配电网高低电压等级交汇点,是电能质量控制的关键节点。针对配电网中广泛应用的Dyn连接组配电变压器,文中提出了一种配电变压器集成式混合补偿系统。有源滤波器(APF)和晶闸管可控电抗器(TCR)以及无源滤波支路通过连接抽头接入配电变压器高压侧三角形绕组。采用TCR实现对无功功率的动态补偿,无源滤波支路设计为容性,扩大TCR补偿无功功率范围的同时,滤除TCR以及负载产生的部分谐波电流,进一步减小APF的容量,APF则用来提升无功补偿动态响应速度以及补偿负载和TCR所产生的谐波电流。仿真验证了所提方案的有效性。
As an intersection of high and low-voltage levels in the distribution network,the distribution transformer is the key point of power quality control.This paper proposes an integrated hybrid compensation system for the distribution transformer with Dyn connection which is widely used in distribution networks.The active power filter (APF),the thyristor controlled reactor (TCR) and the passive filter branch access to the delta winding via connecting taps.TCR is used to dynamicly achieve reactive power compensation and the passive filter branch is designed to be capacitive.The compensation range of TCR is extended.While partial harmonic current generated by the load and TCR can be filtered out.Then,the capacity of APF can be further reduced.APF is used to increase the dynamic response speed of reactive power compensation and compensate the harmonic current generated by load and TCR.The simulation results verify the effectiveness of the proposed scheme.
作者
王祯
尹项根
陈玉
赖锦木
李浪子
戚振宇
WANG Zhen;YIN Xianggen;CHEN Yu;LAI Jinmu;LI Langzi;QI Zhenyu(State Key Laboratory of Advanced Electromagnetic Engineering and Technology (Huazhong University of Science and Technology),Wuhan 430074,China)
出处
《电力系统自动化》
EI
CSCD
北大核心
2019年第11期152-157,190,共7页
Automation of Electric Power Systems
基金
国家重点研发计划资助项目(2017YFB0902900)
国家自然科学基金资助项目(51877089)
湖北省自然科学基金资助项目(2018CFB580)~~
关键词
无功补偿
谐波抑制
配电变压器
有源滤波器
晶闸管可控电抗器
无源滤波支路
reactive power compensation
harmonic suppression
distribution transformer
active power filter ( APF)
thyristor controlled reactor (TCR)
passive filter branch
