基于TSPST的无缝切换供电方法的研究  

Research and analysis of the seamless handover method based on TSPST

作　　者：吴旭鑫 刘毅力[1] 任正 刘卫明 董哲 Wu Xuxin;Liu Yili;Ren Zheng;Liu Weiming;Dong Zhe(School of Electronics and Information,Xi'an Polytechnic University,Xi'an 710000,China;State Grid Inner Mongolia Eastern Electric Power Co.,Ltd.,Electric Power Research Institute,Hohhot 010000,China)

机构地区：[1]西安工程大学电子信息学院,西安710000 [2]国网内蒙古东部电力有限公司电力科学研究院,呼和浩特010000

出　　处：《国外电子测量技术》2021年第5期52-57,共6页Foreign Electronic Measurement Technology

基　　金：国家自然科学基金(51707141);陕西省重点科技创新国家计划(2014KCT-16)项目资助。

摘　　要：电厂运行时情况复杂,保证厂用电系统的正常工作,对电厂发变组发生短路故障时,保护装置动作及母线残压的变化轨迹进行仿真。针对电厂电气设备故障负荷侧母线残压的变化情况,设计了一种基于晶闸管投切的可控移相器(TSPST)调整备用电源输电线路相位的无缝切换供电方法,并对该方法进行仿真分析,仿真结果中备用电源切换时冲击电流约为额定电流的5.3倍,结果表明该供电方法可减少备用电源投入时的冲击电流,提高备用电源切换的时间,提高备用电源切换的成功率。依据仿真结果验证提出的供电方法对电气故障的备用电源切换的成功率提高的可行性。Complex conditions during power plant operation to ensure normal operation of the plant power system.Researched and analyzed a phase-switching power supply method of a controllable phase shifter(TSPST)based on thyristor switching to adjust the standby power transmission line,and make corresponding design and calculation for the theory and structure of the method.According to the actual parameters of a thermal power plant,the phase change simulation of the bus residual voltage and the proposed power supply method when the power plant fails.According to the power supply method of adjusting the phase switching of the standby power supply based on TSPST,when a three-phase short-circuit fault occurs on the main power supply side,simulate the main/standby power supply switching,Analyze the inrush current generated on the load side when switching backup power.Verify whether the proposed power supply method can improve the success rate of standby power switching in the event of electrical failure.

关 键 词：母线残压 移相器 无缝切换 移相角度 

分 类 号：TM621[电气工程—电力系统及自动化]