摘要
在风电场并网运行时,电力系统面临组网重构时的PV节点暂态稳定、电能质量和容量协调运行机制变差等负面问题。针对并网型风电系统常用无功补偿装置进行低压穿越以向电网注入友好风能的特点,构建了一种超级电容储能式高功率型动态电压恢复器(DVR),对电网调度值和风电场输出功率进行监测,由高功率型DVR协调功率控制。相比于传统储能式DVR,大幅降低了风电场并网母线点的谐波含量及储能装置容量。在Matlab/Simulink中搭建的仿真模型及小型实验验证了风电场下该DVR拓扑结构及其控制策略的正确性和有效性。
A power system faces problems such as transient stability of PV nodes,worsening of power quality and capacity coordination when a wind farm is connected to a power system.In view of the circumstances in which a reactive power compensation device is used to inject friendly wind energy into the system,a supercapacitor energy storage high power DVR is proposed to detect the grid dispatching value and wind farm output power,and then the DVR coordinates power control.Compared with the traditional energy storage-type DVR,it significantly reduces the harmonic content of the bus point and the capacity of the energy storage device when the wind farm is put into the network.The simulation model built in Matlab/Simulink and experiment verifies the correctness and effectiveness of the DVR topology and its control strategy with a wind farm.
作者
张志文
彭政
王卿卿
黄际元
谭黎军
ZHANG Zhiwen;PENG Zheng;WANG Qingqing;HUANG Jiyuan;TAN Lijun(College of Electrical and Information Engineering,Hunan University,Changsha 410082,China;Changsha Power Supply Branch,State Grid Hunan Electric Power Corporation,Changsha 410015,China;TBEA Hengyang Transformer Co.,Ltd.,Hengyang 421007,China)
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2020年第18期69-77,共9页
Power System Protection and Control
基金
国家自然科学基金项目资助(51477046)
湖南省战略性新兴产业科技攻关与重大科技成果转化项目资助(2019GK4034)。
关键词
风电场
动态电压恢复器
超级电容器
高功率型
协调控制
wind farm
dynamic voltage restorer
supercapacitor
high power type
coordinated control
