交直流配电网电能质量特性分析与研究进展  

Power Quality Characteristics Analysis and Research Progress of AC/DC Distribution Networks

作　　者：向阳 秦亮[1,2] 谭甜源 李志伟[3] 张辉 刘钊汛[1,2] 郭汶璋 刘开培 XIANG Yang;QIN Liang;TAN Tianyuan;LI Zhiwei;ZHANG Hui;LIU Zhaoxun;GUO Wenzhang;LIU Kaipei(Hubei Key Laboratory of Power Equipment&System Security for Integrated Energy,Wuhan 430072,Hubei Province,China;School of Electrical Engineering and Automation,Wuhan University Wuhan 430072,Hubei Province,China;State Grid Anhui Electric Power Co.,Ltd.,Economic Research Institute,Hefei 230000,Anhui Province,China;State Grid Anhui Electric Power Co.,Ltd.,Hefei 230000,Anhui Province,China)

机构地区：[1]综合能源电力装备及系统安全湖北省重点实验室,湖北省武汉市430072 [2]武汉大学电气与自动化学院,湖北省武汉市430072 [3]国网安徽省电力有限公司经济技术研究院,安徽省合肥市230000 [4]国网安徽省电力有限公司,安徽省合肥市230000

出　　处：《电网技术》2025年第4期1585-1605,I0064,共22页Power System Technology

摘　　要：随着新能源渗透率的提高以及充电桩等直流柔性负荷的接入,交直流互联供电可有效提高配电系统的可靠性和稳定性,是未来配电网的必然发展趋势。然而,高渗透率可再生能源发电装置和高比例宽频输出特性的电力电子设备并网,导致了配电网惯量水平和阻尼能力持续降低,为电力系统电能质量分析和主动治理带来了全新的挑战:一方面改变了传统交流配电网的电能质量表现形态和传播特性,另一方面又为电能质量的提升带来了新的手段和思路。为此,该文从交直流配电网的电压等级、网架结构和控制策略出发,深入分析、总结了新形势下的电能质量特性,梳理归纳了已有电能质量综合评估方法和优化治理措施。最后,从交直流配电网的特性角度展望了电能质量指标体系、评估方法和主动治理策略的未来方向,为进一步理论研究和工程问题的解决提供了借鉴和参考。With the increase of the penetration rate of new energy and the access of DC flexible loads such as charging piles,AC-DC interconnected power supply can effectively improve the reliability and stability of the distribution system,which is an inevitable development trend of the future distribution network.However,the grid-connection of high-permeability renewable energy generation devices and power electronics with a high proportion of broadband output characteristics has led to a continuous reduction in the inertia level and damping capacity of the distribution network,posing new challenges for power quality analysis and proactive governance of power systems:On the one hand,it changes the power quality form and transmission characteristics of the traditional AC distribution network,and on the other hand,it brings new means and ideas for the improvement of power quality.Therefore,starting from the voltage level,grid structure and control strategy of the new AC/DC distribution network,this paper deeply analyzes and summarizes the power quality characteristics under the new situation,and sorts out the existing power quality comprehensive assessment methods and optimization measures.Finally,the future direction of power quality index system,evaluation method and active governance strategy is prospected from the perspective of the characteristics of the new AC/DC distribution network,which provides reference for further theoretical research and engineering problem solving.

关 键 词：交直流配电网 基本形态 电能质量 综合评估 优化治理 

分 类 号：TM721[电气工程—电力系统及自动化]