厂用电故障对控制回路供电影响分析  

Analysis of the Influence of Auxiliary Power Fault on Control Circuit Power Supply

作　　者：叶朋珍 李祥 叶茂 徐洋 YE Pengzhen;LI Xiang;YE Mao;XU Yang(Wenergy Tongling Power Generation Co., Ltd. ,Tongling 244012, China;Anhui Province Wenergy Co., Ltd., Hefei 230000, China)

机构地区：[1]皖能铜陵发电有限公司,安徽铜陵244012 [2]皖能股份有限公司,安徽合肥230000

出　　处：《山东电力技术》2018年第3期60-64,76,共6页Shandong Electric Power

摘　　要：通过分析一起"晃电"对控制电源影响导致的400 V辅机跳闸事件,结合电力系统常见故障类型,研究各类故障情况下对交流控制电源的影响。分析结果表明若将一次交流电源作为控制回路电源,宜使用相电压220 V交流电源,可在一定程度上提高设备控制电源运行的可靠性。By analyzing the 400 V auxiliary trip tripping caused by the impact of ＂ shaking power ＂ on the control power,combined with the common fault types of power system,the influences of the AC auxiliary power under various faults are studied.The analysis result shows that the reliability of the equipment control power operation should be improved by using the phase voltage 220 V AC power supply when the AC power supply is used as a control circuit power supply.

关 键 词：晃电 跳闸 控制电源 Dyn11接线 故障类型 

分 类 号：TM910.6[电气工程—电力电子与电力传动]