光伏升压箱变所用电开关选择
Selection of Electrical Switches for Auxiliary Power System of Prefabricated Photovoltaic Step-up Substation
黄燕飞1
作者信息
- 1. 中国石油工程建设有限公司 华北分公司,河北 任丘 062552
- 折叠
摘要
介绍了光伏升压箱变所用电典型设计方案及所用电开关选择原则,通过研究低压断路器技术参数,分析了断路器短路分断能力随工作电压升高而迅速下降的特点.使用电力分析计算软件ETAP计算短路电流,确定系统短路水平,提出所用电开关选型及参数确定解决方案.
Abstract
This article introduces the typical design scheme of photovoltaic step-up substation and the selection principle of theswitch used in substation's auxiliary power system.By studying the technical parameters of low-voltage circuit breakers,the characteristics that the short-circuit breaking capacity of the circuit breaker decreases rapidly with the increase of the working voltage are analyzed.The short-circuit current is calculated by using the power analysis and calculation software ETAP to determine the short-circuit level of the system.The solution of selection and parameter determination of switch for auxiliary power system of prefabricated photovoltaic step-up substation is put forward.
关键词
光伏/开关选择/断路器/短路电流/选型Key words
photovoltaic/switch selection/circuit breaker/short-circuit current/type selection引用本文复制引用
出版年
2024
NETL
NSTL
万方数据