摘要
针对风电场接入引起的电力系统有功裕度降低以及电压不稳定,可以通过加装无功补偿装置进行改善。同时为了考虑无功补偿设备的成本与响应速度,提出一种兼顾静止无功补偿器(SVC)的快速连续性以及并联电容器低成本大容量的组合式无功补偿方案,并设计了并联电容器与SVC的协调控制策略。利用DIgSILENT电力仿真软件对哈密地区电网进行建模与潮流分析,找出该地区风电场的薄弱节点,然后在该区域对比不加装无功补偿装置、加装并联电容器、加装SVC以及采用组合式无功补偿的静态稳定极限。仿真结果表明采用组合式无功补偿方案即能满足哈密地区风电外送要求,又能够提高系统的静稳极限,具有一定实用价值。
As for the active margin reduction and voltage instability of power system due to wind farm access,it can be improved by adding reactive power compensation device.With consideration of both the cost and response speed of the reactive power compensation equipment at the same time,a kind of combined reactive power compensation proposal with consideration fast continuity of static var compensation(SVC)with low cost and high power of parallel capacitor,and the coordination control strategy between the parallel capacitor and SVC is designed.Modeling and flow analysis for the grid in Hami area are made by the use of DIgSILENT power simulation software,the weak point of the wind farm in the area is found out,then the static stability limit without adding reactive power compensation device,adding parallel capacitor,adding SVC and adopting combined reactive power compensation in the area are compared.It is shown by the simulation result that use of combined reactive power compensation proposal can not only meet wind power transmission requirement,but also improve static stability limit of system and have a definite practical value.
作者
张轩
王海云
武家辉
李永钦
张强
ZHANG Xuan;WANG Haiyun;WU Jiahui;LI Yongqin;ZHANG Qiang(Engineering Research Center for Renewable Energy Generation&Grid Control(School of Electrical Engineering,Xinjiang University),Urumqi 830047,China;Electric Power Research Institute of China,Urumqi 830011,China)
出处
《电力电容器与无功补偿》
北大核心
2018年第5期30-35,共6页
Power Capacitor & Reactive Power Compensation
基金
新疆维吾尔自治区重点实验(2016D03021)
国家自然科学基金(51667020)
关键词
静止无功补偿器(SVC)
组合式无功补偿方案
协调控制策略
静态稳定极限
static var compensation(SVC)
combined reactive power compensation proposal
coordinated control strategy
static stability limit
