The quantity type and fault of the lead tap changer(OLTC) used inHubei 110 kV and higher power network are investigated.Based on investigation,the measures to prevent failure are presented,which will promote the safe operation of OLTC.

• 对湖北电网中的有载分接开关数量、型式、故障情况进行了全面的调查，提出了防止事故的措施，以促进有载分接开关的安全、可靠运行。