基于光伏逆变器的配网智能降损与电能质量优化技术  

Intelligent Loss Reduction and Power Quality Optimization Technology for Distribution Networks Based on Photovoltaic Inverters

作　　者：沈淼 薛冰 周伟 吴伟 葛云芳 SHEN Miao;XUE Bing;ZHOU Wei;WU Wei;GE Yunfang(Xuancheng Power Supply Company,State Grid Anhui Electric Power Company,Xuancheng 242000,Anhui Province,China)

机构地区：[1]国网安徽省电力有限公司宣城供电公司,安徽宣城242000

出　　处：《电力与能源》2025年第1期74-78,共5页Power & Energy

摘　　要：随着光伏电站的快速发展和普及,光伏逆变器在电能转换和传输过程中的作用愈发重要。针对高比例光伏新能源接入导致的配网线损增加、电能质量恶化等问题,分析了光伏逆变器引入配网后存在的损耗及对电能质量的影响原因;提出了挖掘现有光伏逆变器的无功补偿、谐波抑制、三相平衡补偿能力,使光伏逆变器具备部分静止无功发生器(SVG)的功能,以克服光伏发电高比例接入带来的电网线损与电能质量问题。试验证明,所提技术方案在实际应用中具有有效性和可行性,为光伏电站的配网智能化管理和电能质量优化提供了理论指导和实用价值。With the rapid development and widespread adoption of photovoltaic power stations,photovoltaic inverters have become increasingly important in the process of energy conversion and transmission.To address the issues of increased line losses and deteriorated power quality caused by the high penetration of photovoltaic renew-able energy in the distribution network,this paper analyzes the losses and the impact on power quality after the introduction of photovoltaic inverters into the distribution network.It proposes to explore the existing capabilities of photovoltaic inverters in reactive power compensation,harmonic suppression,and three-phase balance compensation,and to implement partial Static Var Generator(SVG)functionality in photovoltaic inverters.This approach aims to overcome the problems of line losses and power quality deterioration caused by high penetration of photovoltaic energy into the grid.Experimental results demonstrate the effectiveness and feasibility of the proposed technology in practical applications,providing theoretical guidance and practical value for the intelligent management of photovoltaic power stations and power quality optimization in distribution networks.

关 键 词：光伏逆变器 配网智能化 降损 电能质量 谐波抑制 

分 类 号：TM615[电气工程—电力系统及自动化]