混合无功补偿系统分层控制策略  

Hierarchical Control Strategy of Hybrid Reactive Power Compensation System

作　　者：朱亮亮 陈洁[1] 李玉麒 郑凯凯 杨国 ZHU Liang-liang;CHEN Jie;LI Yu-qi;ZHENG Kai-kai;YANG Guo(Engineering Research Center for Renewable Energy Power Generation and Grid Control Technology,Ministry of Education,School of Elctrical Engineering,Xinjiang University,Urumqi 830046.China;Xinjiang Goldwind Technology Co.,Ltd.Urumqi 830026,China)

机构地区：[1]新疆大学电气工程学院教育部可再生能源发电与并网控制工程技术研究中心,新疆乌鲁木齐830046 [2]新疆金风科技股份有限公司,新疆乌鲁木齐830026

出　　处：《水电能源科学》2021年第2期186-189,共4页Water Resources and Power

基　　金：新疆维吾尔自治区高校科研重点项目(XJEDU20181005);国家自然科学基金项目(51467020);新疆维吾尔自治区自然科学基金(2019D01C78).

摘　　要：针对电能质量要求日益增加,为实现大容量低成本动态无功补偿,提出一种以静止无功补偿器(SVC)和静止无功发生器(SVG)协同运行的混合无功补偿系统,系统在充分利用SVG.SVC优势的基础上,构建一种基于频率分解的SVC+SVG的混合无功补偿分层控制模型。其中,功率协调层将无功指令电流进行分解,将频率较小的无功分量分配给SVC进行补偿,将频率较大的无功分量分配给SVG进行补偿;补偿控制层由于SVG处理的均为高频无功信号,使用自适应粒子群算法对SVG控制器进行PI参数整定;补偿执行层通过对SVC和SVG主电路发出无功电流,对电网无功功率进行补偿。Simulink仿真分析验证了所提控制策略的有效性,且相比于纯SVG补偿,成本有较大优势。Aiming at the increasing requirements of power quality,in order to achieve large capacity and low-cost dy-namic reactive power com pensation,this paper proposes a hybrid reactive power compensation system coordinated with a.static reactive power compensator(SVC)and a static reactive power generator(SVG).The system makes full use of the advantages of SVG over SVC,and proposes a hybrid reactive power compensation hierarchical control model based on fre-quency decomposition of SVC+SVG.In power coordination layer.reactive command current was decomposed,reactive components with lower frequency was allocated to SVC for compensation.and reactive components with higher frequency was allocated to SVG for compensation.In compensation control layer,because SVG processes all high-frequency reactive signals,the adaptive particle swarm algorithm was used to set up PI parameters for the SVG controller.In compensation execution layer.the reactive power of the grid was compensated by sending reactive current to the SVC and SVG main circuits.Simulink simulation analysis verified the effectiveness of the proposed control strategy.Compared with the pure SVG compensation,the cost of the proposed system has a greater advantage.

关 键 词：静止无功补偿器 静止无功发生器 粒子群算法 频率分解 无功补偿 MALLAT算法 

分 类 号：TM761[电气工程—电力系统及自动化]