全球能源互联网2026，Vol.9Issue(3)：432-443,12.DOI:10.19705/j.cnki.issn2096-5125.20260071
考虑高海拔影响的构网型SVG电气回路参数设计
Grid Forming SVG Electrical Circuit Parameters Design Considering the Influence of High Altitude
摘要
Abstract
The grid-forming converter has voltage source characteristics and has been applied in energy storage,new energy integration systems,and weak systems that require reactive voltage support and transient active inertia support.Based on the grid-forming static var generator(SVG)project configured in the Xizang Nagqu and Ngari regional power grid,this paper proposes the electrical circuit parameter design of the grid-forming SVG in high-altitude areas,determines the selection of insulated gate bipolar transistor(IGBT)devices for SVG,the parameters of modular multilevel converter(MMC)modules,and the value of the supercapacitor as the energy storage component on the DC side.For the overcurrent problem caused by grid faults,the virtual admittance current-limiting and direct current limiting control strategy is applied,ensuring that the converter does not overcurrent.For power grid asymmetry line faults,voltage support and negative sequence voltage suppression strategies are proposed.Through simulation calculations and field tests,it is verified that the parameters of the main circuit components of the grid forming SVG meets the steady-state and transient requirements of the system.In the instant of grid faults,it can provide reactive support and short-term active output for the system,providing reactive and active support for the stable operation of the grid.关键词
构网型SVG/电气回路参数设计/电流限制策略/无功和有功支撑/高海拔Key words
grid-forming SVG/electrical circuit parameters design/current limited strategy/reactive and active power support/high-altitude分类
信息技术与安全科学引用本文复制引用
韩东明,杨万开,赵国亮,栾晓明,乔光尧..考虑高海拔影响的构网型SVG电气回路参数设计[J].全球能源互联网,2026,9(3):432-443,12.基金项目
国家电网有限公司科技项目(5100-202455437A-3-6-RW). Science and Technology Project of SGCC(5100-202455437A-3-6-RW). （5100-202455437A-3-6-RW）
