一种数字化并联电容器组智能预警系统  

A Digital Intelligent Early Warning System for Shunt Capacitor Bank

作　　者：刘崧 王俊波 武利会 欧晓妹 LIU Song;WANG Jun-bo;WU Li-hui;OU Xiao-mei(Foshan Power Supply Bureau of Guangdong Power Grid Co.,Ltd.,Foshan 528001,China)

机构地区：[1]广东电网有限责任公司佛山供电局,佛山528001

出　　处：《自动化与仪表》2021年第11期66-70,共5页Automation & Instrumentation

摘　　要：并联电容器组的运行中故障诊断技术对于保证电力系统的安全运行、减少停电预防性试验次数等具有重要的意义。该文基于数据采集与监视控制系统(SCADA),以并联电容器组的中性点电压作为诊断指标,提出了一种基于物联网在线诊断功能的并联电容器故障预警系统。首先介绍了并联电容器组的中性点电压特征,然后介绍了电容器三相电压数据挖掘方式和所提系统的预警策略,最后通过仿真验证和建成系统的实际的运行效果,证明了所提预警系统的正确性与可行性。The fault diagnosis technology of shunt capacitor banks in operation is of great significance to ensure the safe operation of power system and reduce the number of power failure preventive tests.Based on the supervisory control and data acquisition(SCADA),taking the neutral point voltage of shunt capacitor bank as the diagnosis index,a capacitor banks fault early warning system based on internet of things is proposed.Firstly,this paper analyzes the characteristics of neutral voltage of shunt capacitor bank under fault.Then,the data mining method of capacitor three-phase voltage and the early warning strategy of the proposed system are introduced.Finally,the simulation and the actual operation effect of the built system prove the correctness and feasibility of the proposed early warning system.

关 键 词：数据采集与监视控制系统 中性点电压 并联电容器组 故障预警系统 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置] TM715[自动化与计算机技术—控制科学与工程]