智能变电站联切常规保护小电源工程改造解决方案  

Solution for the Engineering Transformation of Intelligent Substation to Cut off Conventional Protection for Small Power Sources

作　　者：李思妤 陈静诗 苏家奇 曾乙宸 LI Siyu;CHEN Jingshi;SU Jiaqi;ZENG Yichen(State Grid Chongqing Electric Power Company Yongchuan Power Supply Branch,Chongqing 402160,China)

机构地区：[1]国网重庆市电力公司永川供电分公司,重庆402160

出　　处：《电工技术》2025年第5期151-153,共3页Electric Engineering

摘　　要：在小电源并入大电网后,为了维护电网运行安全,减少小电源对电网系统的扰动,变电站保护装置如何联切小电源是一个重点问题。以某110kV智能变电站接入低电压常规保护的小电源工程改造为例,分析了小电源入网后对变电站的影响及改造需新增的保护功能,提出了一种常规保护和智能变电站不兼容的解决办法,具有工程参考价值。In order to maintain the safe operation of the power grid and reduce the disturbance of small power sources to the power grid system,how to connect and cut off small power sources in substation protection is a key issue after the integration of small power sources into the large power grid.This article takes the transformation of a small power source project with low voltage conventional protection in a llo kV intelligent substation as an example to analyze the impact of small power sources on the substation after they are connected to the grid,the additional protection functions that need to be added,and the solutions to the incompatibility between conventional protection and intelligent stations.It has engineering reference value.

关 键 词：智能变电站 并网 联切小电源 

分 类 号：TM77[电气工程—电力系统及自动化]