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源荷波动时含固态变压器的有源配电网动态无功优化方法

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针对分布式电源并网引起的双向潮流导致网损增大以及分布式电源、负荷的波动导致节点电压波动等问题,文章基于固态变压器(Solid State Transformer,SST)两侧电力电子变换器的脉冲宽度调制技术,提出了一种控制潮流的方法.该方法首先建立了含SST的有源配电网动态无功优化模型;然后以多时刻的有功网损和电压波动为优化目标,采用改进多目标粒子群算法对SST的一、二次侧的电力电子变换器的调制角和调制系数等多个控制变量进行求解;最后建立仿真模型并与基于有载调压变压器的有源配电网动态无功优化方法进行比较.结果证明了所提方法在降低配电网网损和维持节点电压稳定方面的优越性.
Dynamic reactive power optimization method of active distribution network with solid state transformer under source load fluctuation
In order to solve the problems of increasing network loss caused by bidirectional power flow and node voltage fluctuation caused by fluctuation of distributed power and load,This paper proposes a method to control power flow based on pulse-width modulation technology of power electronic converters on both sides of Solid State Transformer.In this paper,the dynamic reactive power optimization model of active distribution network with SST is firstly established.Then,the improved multi-objective group algorithm is used to solve the control variables such as modulation Angle and modulation coefficient of the power electronic converter based on the primary and secondary sides of SST,aiming at the multi-time active network loss and voltage fluctuation.Finally,the simulation model is established and compared with the active distribution network dynamic reactive power optimization method based on on-load voltage regulating transformer.The results prove the superiority of the proposed method in reducing network loss and maintaining node voltage stability.

solid state transformeractive distribution networkdynamic reactive power optimizationmultiobjective particle swarm

孙汝羿、袁至、王维庆、何山

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新疆大学 可再生能源发电与并网控制教育部工程研究中心,新疆 乌鲁木齐 830017

固态变压器 有源配电网 动态无功优化 多目标粒子群

国家自然科学基金国家自然科学基金新疆维吾尔自治区重点实验室开放课题新疆维吾尔自治区高校科研计划项目

52067020517670242018D04005XJEDU2021I010

2024

可再生能源
辽宁省能源研究所 中国农村能源行业协会 中国资源综合利用协会可再生能源专委会 中国生物质能技术开发中心 辽宁省太阳能学会

可再生能源

CSTPCD北大核心
影响因子:0.605
ISSN:1671-5292
年,卷(期):2024.42(7)