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Alternative TitleThe Control Technology of Three-Phase Unbalance Load in Low Voltage Distribution Networks Based on Coordinated Controlled SVGs
邓惠华1; 李国良1; 周晓明1; 李汉荣1; 王浩2
Source Publication电工技术学报
Other AbstractConcentralized static var generator(SVG)compensation system has single compen-sation effect and distributed SVG compensation system without communication function can notdistribute SVG’s compensation capacities intelligently.Aiming at these problems,a compensationsystem based on SVGs’coordinated control strategy was proposed for three-phase unbalance load inlow voltage distribution network.Communication bus and coordinated control strategy are introducedin the proposed system.After compensating the downstream unbalance current,the residual capacity ofthe downstream SVG is used to compensate the upstream SVGs in sequence.The low voltage problemof each node is further reduced by the reverse power flows from the downstream SVG to the upstreamSVG.And then SVG’s capacity in the proposed compensation system can be fully used.Meanwhile,theproblems of the distribution transformer’s unbalance current and the node’s low voltage aresynthetically solved.Simulations for actual effect evaluation of the proposed compensation systemwere done in Matlab/Simulink.Validity of the proposed system is confirmed by the simulation.In fourdifferent load cases,four different compensation systems were applied in low voltage distribution station,respectively.Unbalance currents of distribution transformer secondary and node voltage dropsin these cases were compared.Comparison results show that proposed compensation system has thebest compensation effect.
Keyword低压配网 三相负荷不平衡 配电变压器运行 协调控制 静止无功发生器 电能质量 Low voltage distribution networks three-phase load unbalance distribution transformer operation coordinated control static var generator (SVG) power quality
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Document Type期刊论文
Corresponding Author王浩
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GB/T 7714
邓惠华,李国良,周晓明,等. 基于协调控制SVG的低压配网三相负荷不平衡治理技术[J]. 电工技术学报,2017,32(S1):75-83.
APA 邓惠华,李国良,周晓明,李汉荣,&王浩.(2017).基于协调控制SVG的低压配网三相负荷不平衡治理技术.电工技术学报,32(S1),75-83.
MLA 邓惠华,et al."基于协调控制SVG的低压配网三相负荷不平衡治理技术".电工技术学报 32.S1(2017):75-83.
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