机电工程技术2024，Vol.53Issue(11)：182-185,4.DOI:10.3969/j.issn.1009-9492.2024.11.039
大型光伏电站集电线路电压选择探讨
Discussion on Voltage Selection of Collection Line of Large PV Power Station
任立 1刘洋 1唐俊 1何垒 1杜炳海1
作者信息
- 1. 西南电力设计院有限公司,成都 610056
- 折叠
摘要
Abstract
At present,the voltage level of the collection lines in large photovoltaic power stations is usually 35 kV.However,with the continuous promotion of large-scale photovoltaic base projects in China,the capacity of photovoltaic power stations continues to increase.Using 35 kV as the collection line will gradually become a bottleneck restricting photovoltaic power generation technology.It is necessary to explore the feasibility of using 66 kV voltage level for the collection lines in large photovoltaic power stations.If the 35 kV voltage level is selected for the collection line,there will be more circuits in the collection line,and the number of main transformers and step-up station equipment will also increase;if the 66 kV voltage level is selected for the collection line,it can effectively reduce the number of collection line circuits and main transformers,save collection line cables,and simplify the electrical main wiring.Based on this,a 400 MW large-scale ground photovoltaic power station is taken as example to compare the technical and economic aspects of 35 kV and 66 kV voltage level collection lines,and conducts research on 66 kV high-voltage cables and related electrical equipment.It is proposed that with the continuous maturity and application of 66 kV photovoltaic step-up transformers and 66 kV high-voltage cable manufacturing technology,the voltage level of collection lines in large-scale photovoltaic power stations with a capacity of over 400 MW can be considered to use 66 kV.However,considering current technical and economic factors,it is still recommended to use a 35 kV voltage level.关键词
大型光伏电站/集电线路/35kV/66kVKey words
large PV power station/collection line/35 kV/66 kV分类
信息技术与安全科学引用本文复制引用
任立,刘洋,唐俊,何垒,杜炳海..大型光伏电站集电线路电压选择探讨[J].机电工程技术,2024,53(11):182-185,4.
