摘要
针对如何通过微网群电能质量评估与多变流器协同来实现电能质量有效控制这一问题,提出1种新的基于超短期电能质量评估的微网群电能质量控制策略。首先,采用超短期电能质量评估方法,实时评估并定位微网群中的电能质量问题。然后,根据定位结果,采用分布式共识算法对多变流器进行协同控制,以实现电能质量任务分配及治理;治理完成后,再进行评估验证,确保治理效果并形成微网群系统级的闭环治理体系。最后,算例表明所提策略相较于传统方法能在微网群层面上实现电能质量问题的识别、评估和治理的闭环控制,谐波畸变率有效降低,实现了微网群电能质量的有效评估与治理。
To realize the effective control of power quality(PQ)in microgrid cluster(MGC)by means of PQ assessment of MGC and the cooperation with multiple converters,a novel strategy for MGC based on ultra-short-term PQ assessment is proposed.First,an ultra-short-term PQ assessment method is employed to evaluate and locate the PQ problems in MGC in real time.Then,according to the positioning results,a distributed consensus algorithm is utilized to coordinate the control of multiple converters,thus achieving the PQ task allocation and governance.After the completion of governance,the assessment and verification are performed again to ensure the governance effect and further form a closed-loop governance system at the level of MGC.Finally,the results of an example show that compared with the traditional method,the proposed strategy can realize the closed-loop control of PQ problems from the perspectives of identification,assessment and governance at the level of MGC while effectively reducing the harmonic distortion rate,thereby realizing the effective assessment and governance of PQ in MGC.
作者
师洪涛
锁忠梅
蒙欣欣
张白
朱嘉豪
SHI Hongtao;SUO Zhongmei;MENG Xinxin;ZHANG Bai;ZHU Jiahao(School of Electrical and Information Engineering,North Minzu University,Yinchuan 750021,China)
出处
《电源学报》
北大核心
2025年第3期184-195,共12页
Journal of Power Supply
基金
国家自然科学基金资助项目(52267013)
宁夏回族自治区重点研发计划资助项目(2022BEE03004)。
关键词
微网群
电能质量评估
多变流器
协同控制
闭环治理
Microgrid cluster(MGC)
power quality(PQ)assessment
multi-converter
cooperative control
closed-loop governance
