水力发电2026，Vol.52Issue(4)：84-93,98,11.
多机型超大型抽水蓄能电站电气主接线和厂房布置研究
Main Electrical Connection and Plant Layout for Multi-unit Super-large Pumped-storage Power Stations
摘要
Abstract
Focusing on the connection of Fengning Pumped-storage Power Station to the world's first±500 kV flexible DC grid and the specific requirements of power system for various operation modes of the power station,considering the characteristics of its multiple units,the first construction of variable-speed units,as well as the various starting methods of fixed-speed units and variable-speed units,a comprehensive and in-depth study is conducted on key technologies such as the safety,reliability,flexibility and economy of the main electrical connection,the layout of main electrical equipments,and the construction period,and a set of design methods for the main electrical connection of an super-large pumped-storage power station that meets the combination of multiple units,multiple unit types,multiple starting methods,and multiple incoming and outgoing line circuits is proposed.At the same time,the layout method of"fixed/variable-speed units with the same span and same spacing,and multi-loop fire protection and maintenance channels for the main transformer tunnel"is proposed,effectively solving the technical problems of engineering layout in restricted spaces of large power plants under complex geological conditions.In addition,a double-layer layout structure of the main electrical circuit equipments for the AC-excited variable-speed pumped-storage units and a collaborative design method for the equipments such as generator voltage circuit,AC excitation circuit,and ventilation and air conditioning system are developed,ensuring the safe operation and convenient maintenance of the variable-speed unit AC excitation system.These achievements successfully support the engineering application of the first batch of AC excitation variable-speed units in China and realize the full commercial operation of large-scale pumped-storage power stations with multiple types of units.关键词
电气主接线/交流励磁变速机组/多起动方式组合/受限空间/双层母线洞Key words
main electrical connection/AC-excited variable-speed units/combinations of multiple starting methods/constrained space/double-layer busbar tunnel分类
信息技术与安全科学引用本文复制引用
倪晋兵,吴培枝,王志远,杨梅,王建明,王纯,王坤..多机型超大型抽水蓄能电站电气主接线和厂房布置研究[J].水力发电,2026,52(4):84-93,98,11.基金项目
国网新源集团有限公司科技项目资助(SGXYKJ-2019-074) （SGXYKJ-2019-074）
