一种新型静止变频器换相失败检测技术  

A Novel Commutation Failure Detection Technology of SFC

作　　者：钟磊 范尧 汪兴 张寅 原晓琦[3,4] 邸卉芳 吴彦飞 ZHONG Lei;FAN Yao;WANG Xing;ZHANG Yin;YUAN Xiaoqi;DI Huifang;WU Yanfei(Zhejiang Datang International Shaoxing Jiangbin Thermal Power Co.,Ltd.,Shaoxing 312086,China;East China Electric Power Test and Research Institute of China Datang Corporation Science and Technology General Research Institute Ltd.,Hefei 231299,China;NARI Group Corporation(State Grid Electric Power Research Institute),Nanjing 211106,China;NARI Technology Co.,Ltd.,Nanjing 211106,China)

机构地区：[1]浙江大唐国际绍兴江滨热电有限责任公司,浙江绍兴312086 [2]中国大唐集团科学技术研究总院有限公司华东电力试验研究院,合肥231299 [3]南瑞集团(国网电力科学研究院)有限公司,南京211106 [4]国电南瑞科技股份有限公司,南京211106

出　　处：《大电机技术》2023年第4期72-76,82,共6页Large Electric Machine and Hydraulic Turbine

基　　金：国家电网有限公司总部科技项目(5100-202240496A-3-0-ZZ)。

摘　　要：燃气轮机启动系统多采用静止变频器(SFC),启动成功率是考核SFC的重要指标。本文基于燃气轮机对SFC启动成功率的影响因素进行了分析,发现因各种原因造成的SFC逆变桥换相失败是影响SFC启动成功率的关键因素。基于此,本文以SFC发生换相失败的波形分析为基础,对SFC逆变桥换相进行了深入的研究,将SFC逆变桥换相失败归为“脉冲丢失”和“关断复通”两类,并提出了基于脉冲丢失换相失败的检测逻辑和基于关断复通换相失败的检测逻辑,最终将换相失败检测技术应用到实际项目中,理论上将SFC在非永久性硬件故障状态下的启动成功率提高至100%。Static frequency converter(SFC)is widely used in gas turbine start-up system,and the success rate of start-up is an important indicator to evaluate SFC.In this paper,the factors affecting the success rate of start-up is analyzed,it is found that commutation failure of SFC inverter bridge is the key factor.Based on the analysis of the waveform of SFC commutation failure,this paper deeply studies the commutation failure of SFC inverter bridge,classifies the commutation failure of SFC into pulse loss and turn off and return on,and proposes the detection logic based on pulse loss and turn off and return on.Finally,the commutation failure detection technology is applied to the practical engineering project,and the success rate of start-up is improved to 100%theoretically under non-permanent hardware failure state.

关 键 词：燃气轮机 静止变频器 换相失败 逆变桥 脉冲丢失 关断复通 

分 类 号：TM921.5[电气工程—电力电子与电力传动]