南方电网技术2024，Vol.18Issue(6)：69-78,10.DOI:10.13648/j.cnki.issn1674-0629.2024.06.009
风电富集地区电网动态等值建模
Dynamic Equivalence Modeling of Regional Power Grid with Enriching Wind Power Resources
摘要
Abstract
In order to meet the detailed simulation requirements for large-scale wind power integration into regional power grid,an equivalence method applicable to regional power grid integration with wind power is proposed.Unlike traditional dynamic equivalence methods that focus on the main grid,the equivalence of regional power grid with enriching wind power resources must not only examine the characteristics of intensive wind power integration within the regional power grid,delineate the influence scope of each wind farm,but also comprehensively consider the constraints on the source and load characteristics of the external grid at the boundary nodes.The proposed method can simplify the external grid on a large scale while maintaining consistent steady-state and transient characteristics,achieving equivalent modeling of the regional power grid.Firstly,rather than the traditional scheme of equat-ing the grid at the access point of wind farms using short-circuit ratio and other electrical strength indexes,it is proposed to define the study area and the external area to be equated by residual voltage.Then,the regional power grid is further simplified by considering topological constraints of the regional power grid.Additionally,the equivalent model of the external system is constructed by combin-ing an equivalent synchronous generator and composite load at the boundary node.Finally,the proposed method is applied to a practi-cal regional power grid with enriching wind power resources.The effectiveness of the proposed method is verified by the simulation results.关键词
风电资源/动态等值/地区电网/残压/拓扑约束Key words
wind power resource/dynamic equivalence/regional power grid/residual voltage/topology constraints分类
信息技术与安全科学引用本文复制引用
杨文佳,胡永浩,朱林,武志刚,易杨..风电富集地区电网动态等值建模[J].南方电网技术,2024,18(6):69-78,10.基金项目
国家自然科学基金资助项目(U1766213,U22B6007) （U1766213,U22B6007）
中国南方电网有限责任公司科技项目(GDKJXM20198236) （GDKJXM20198236）
广东省新能源电力系统智能运行与控制企业实验室开放基金项目(GPKLIOCNEPS-2021-KF-01). Supported by the National Natural Science Foundation of China(U1766213,U22B6007) （GPKLIOCNEPS-2021-KF-01）
the Science and Technology Project of China Southern Power Grid Co.,Ltd.(GDKJXM20198236) （GDKJXM20198236）
the Open Foundation of Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System(GPKLIOC-NEPS-2021-KF-01). （GPKLIOC-NEPS-2021-KF-01）
