应用抗扰动观测器的微网改进下垂无功补偿技术  

Improved Droop Reactive Power Compensation Technology Using Anti-disturbance Observer in Microgrid

作　　者：谢楠 杨沛豪 何萍 袁训锋 陈垚 XIE Nan;YANG Peihao;HE Ping;YUAN Xunfeng;CHEN Yao(School of Electronic Information and Electrical Engineering,Shangluo University,Shangluo 726000,China;Shangluo New Energy R&D Platform,Shangluo 726000,China;Xi’an Thermal Power Research Institute Co.,Ltd,Xi’an 710054,China;State Grid Wuzhong Power Supply Company,Wuzhong 751100,China)

机构地区：[1]商洛学院电子信息与电气工程学院,商洛726000 [2]商洛市新能源研发平台,商洛726000 [3]西安热工研究院有限公司,西安710054 [4]国网吴忠供电公司,吴忠751100

出　　处：《电力系统及其自动化学报》2021年第1期57-63,共7页Proceedings of the CSU-EPSA

基　　金：商洛学院科研基金资助项目(18SKY-FWDF005);商洛市科技局计划资助项目(SK2019-07)。

摘　　要：微网中的分布式电源的逆变装置采用下垂控制来维持电源点的功率平衡和电压稳定,其中电压稳定通过无功补偿来实现。本文所要解决的是传统下垂控制在电压调节过程中存在分配误差且无功补偿增减幅度过大问题。提出一种新型自适应下垂控制方案来增加无功补偿动态性能;提出一种基于抗扰动观测器的微网抑制电压波动方案,来提高无功补偿下垂控制系统的鲁棒性。将上述策略通过Matlab/Simulink仿真和实验来验证所提方案可以有效提高微网控制性能。For the inverter device used in distributed generations(DGs)in microgrid,the droop control technology is adopted to maintain the power balance and voltage stability at the power supply point,and the voltage stability is realized by reactive power compensation.To solve the problem that there exists distribution error during voltage regulation under the traditional droop control and the reactive power compensation fluctuates too much,a novel scheme of adaptive droop control is proposed to improve the dynamic performance of reactive power compensation.The grid voltage fluctuation is suppressed based on an anti-disturbance observer,thus improving the robustness of the droop reactive power compensation control system.The above strategy was verified by Matlab/Simulink simulations and experiments,indicating that the proposed scheme can effectively improve the microgrid control performance.

关 键 词：微网 逆变装置 无功补偿 自适应下垂控制 扰动观测器 

分 类 号：TM273[一般工业技术—材料科学与工程]