铝电解整流机组非典型误动跳闸分析及技改探讨

Analysis of atypical malfunction tripping of rectifier unit and discussion on technical reform

整流机组是电解铝企业生产重要的大型供电设备,一旦发生供电中断,将对企业生产造成重大经济损失。某国有大型企业220kV开关站在进行正常倒闸操作过程中,拉开/合上220kV母线侧隔离开关时,多次导致单台整流机组误动跳闸,对整流机组系统的平稳运行形成极大的安全隐患。本文针对该非典型重大缺陷问题,专业人员对图纸、故障信息、现场等情况进行分析、专家会诊,经技术改造,有效排除了整流机组非典型误动跳闸的故障。

Rectifier units are important large-scale power supply equipments for electrolytic aluminum enterprises. Once power interruption occurs, they will cause significant economic losses to the company's production. When a 220kV switchgear station of a large state-owned enterprise was performing a normal switching operation, when the 220kV busbar side switch was opened/closed, it repeatedly caused a single rectifier to trip by mistake, which caused great problems in the smooth operation of the rectifier system. Potential safety hazards. For this atypical and major defect problem, professionals analyze the drawings, fault information, on-site situations, and expert consultations, and after technical transformation, effectively solve the tripping failure of the rectifier unit's atypical malfunction.