电网技术2025，Vol.49Issue(2)：427-436,中插1-中插5,15.DOI:10.13335/j.1000-3673.pst.2024.1281
极端事件下基于频率响应降阶模型的城市局部电网离网过程紧急频率控制
Research on Emergency Frequency Control of Urban Local Power Grid Off-grid Process Based on Frequency Response Reduction Model Under Extreme Events
摘要
Abstract
Extreme events may lead to the disconnection of urban local grids from the superior grid,entering an island mode.The significant active power deficit at the moment of disconnection poses a challenge in maintaining the frequency safety of the urban local grid.This paper proposes an emergency frequency control method for the disconnection of urban local grids under extreme events based on a reduced-order frequency response model.Firstly,based on the balanced truncation reduction method,a reduced-order frequency response model of the urban local grid,considering the aggregation of distributed resources,is established by extracting key features of frequency response.Then,a two-stage decision-making method for emergency frequency control during the disconnection process of urban local grids is proposed.The first stage solves the control amount of rapid power control resources to ensure that the frequency does not exceed the limit,and the second stage rapidly decomposes the overall power command value of the distributed resource aggregation based on the priority sorting of resource reliability.Finally,a typical urban local grid case study verifies the accuracy and effectiveness of the proposed model and method.关键词
城市局部电网/频率响应建模/模型降阶/分布式资源聚合体/紧急频率控制Key words
urban regional power grid/frequency response modeling/model reduction/distributed resource aggregation/emergency frequency control分类
信息技术与安全科学引用本文复制引用
武阿涛,许寅,吴翔宇..极端事件下基于频率响应降阶模型的城市局部电网离网过程紧急频率控制[J].电网技术,2025,49(2):427-436,中插1-中插5,15.基金项目
国家重点研发计划青年科学家项目(2022YFB2405500).Project Supported by National Key Research and Development Program Young Scientists Project(2022YFB2405500). （2022YFB2405500）
