控制与信息技术Issue(4)：28-34,7.DOI:10.13889/j.issn.2096-5427.2025.04.004
并网逆变器频率支撑分析及其构网控制策略改进研究
Research on Grid-Connected Inverters:Frequency Support Analysis and Improvement in Grid-Forming Strategy
贺西 1梅文庆 1张志学 1胡亮 1李炳璋 1赵慧敏1
作者信息
- 1. 中车株洲电力机车研究所有限公司,湖南 株洲 412001
- 折叠
摘要
Abstract
Conventional grid-following inverters in renewable-powered systems lack the capability to support grid frequency,posing a risk of frequency collapse in these electric power systems as the penetration of renewable energy generation grows.To mitigate the adverse impact of renewable energy grid-connected equipment on system frequency stability,many grid-following control optimization solutions and grid-forming control strategies have been proposed and studied extensively.This paper begins by analyzing the frequency stability challenges faced by electric power systems and examining the frequency disturbance characteristics of renewable energy generation.It then compares and summarizes the grid frequency support characteristics of grid-following and grid-forming inverters,highlighting key points for achieving grid frequency support.Building on these insights,an improved grid-forming inverter control strategy is proposed.Without mimicking the characteristics of traditional synchronous motors,this control strategy features fast active power response and enhanced active power frequency support.Final simulations demonstrate that the proposed control strategy enhances frequency support by increasing the active power response to grid frequency changes.These results also confirm the correctness of the preceding analysis on the frequency disturbance characteristics of grid-connected inverters.关键词
新能源发电/并网逆变器/频率支撑/构网型控制/有功响应特性Key words
renewable energy power generation/grid-connected inverter/frequency support/grid-forming control/active power response characteristics分类
信息技术与安全科学引用本文复制引用
贺西,梅文庆,张志学,胡亮,李炳璋,赵慧敏..并网逆变器频率支撑分析及其构网控制策略改进研究[J].控制与信息技术,2025,(4):28-34,7.
