摘要
随着光伏组件、逆变器技术的发展,集中式光伏电站装机容量越来越大,选择合适的电气主接线可以提高发电量,降低初始投资和运行成本。该文针对光伏基地接入500 kV电网,对比分析35 kV/500 kV一级升压集电线路和变压器组合3个接线方案,500 kV侧3个接线方案,110 kV和220 kV两级升压2个方案,提出制约因素。经过比较,500 kV升压站集电线路和变压器组合采用升压变压器带2段35 kV单母线的单元接线方案,500 kV侧采用双母线接线方案。
With the development of photovoltaic modules and inverter technologies,the installed capacity of centralized photovoltaic power stations is becoming larger and larger.Choosing appropriate main electrical wiring can increase power generation capacity and reduce initial investment and operating costs.In this paper,for the photovoltaic base to be connected to the 500 kV power grid,three wiring schemes for the 35 kV/500 kV first-stage step-up collector line and transformer combination and three wiring schemes for the 500 kV side,and two plans for the 110 kV and 220 kV two-stage step-up are compared and analyzed,and restrictive factors are proposed.By comparison,the 500 kV booster station collector line and transformer combination adopts a unit wiring scheme with a booster transformer with two sections of 35 kV single bus,and the 500 kV side adopts a double bus wiring scheme.
出处
《科技创新与应用》
2024年第35期103-106,112,共5页
Technology Innovation and Application
关键词
光伏电站
电气主接线
500
kV升压站
一级升压
两级升压
双母线接线
photovoltaic power station
electrical main wiring
500 kV booster station
primary booster
two-stage booster
dual bus wiring
