Analysis and solutions to the frequent faults of the external cooling fans in the converter valve cooling system
换流阀冷却系统外冷风机频繁故障问题分析及解决措施

摘要

目的 确保换流站内阀冷却系统的安全稳定运行，以维持直流系统的整体运行状况。针对换流站阀外冷系统风机频繁故障的问题，本研究旨在找出故障原因并提供解决措施。方法 通过对故障风机进行多次数据测试及拆解分析，本研究系统地研究了风机的故障模式及原因数据测试。包括运行参数监测、振动分析等，拆解分析则关注于风机内部结构、材料老化等方面。对象：换流站阀外冷。系统风机这些风机作为阀冷却系统的关键组件，其性能直接影响到整个换流站的运行效率与安全性。结果 加强定期维护、优化风机设计以及更换耐用材料在内的解决措施。预计能显著降低风机故障率，提升换流站阀冷却系统的运行效率和安全性。结论 本研究成功识别了故障风机的主要故障原因，并据此提出了有效的解决措施。这些措施对其他换流站的风机维护与管理具有积极的借鉴意义，有助于提高整个电力系统的运行稳定性和可靠性。

Abstract

Objective To ensure the safe and stable operation of the valve cooling system in the converter station, so as to maintain the overall operating condition of the DC system. The purpose of this study is to find out the cause of the frequent failure of the fan in the external cooling system of the valve of the converter station and to provide solutions.
Methods Through data testing and disassembly analysis of the faulty fan, the failure mode and cause data testing of the fan were systematically studied in this study. Including operating parameter monitoring, vibration analysis, etc. Disassembly analysis focuses on the internal structure of the fan, material aging and other aspects. Object: Converter station valve external cold. As a key component of the valve cooling system, the performance of these fans directly affects the operating efficiency and safety of the entire converter station.
Results The solution measures including regular maintenance, optimization of fan design and replacement of durable materials were strengthened. It is expected to significantly reduce the fan failure rate and improve the operating efficiency and safety of the valve cooling system in the converter station.
Conclusion   This study successfully identified the main fault causes of the faulty fan, and put forward effective solutions accordingly. These measures have positive reference significance for the fan maintenance and management of other converter stations, and help to improve the operation stability and reliability of the whole power system.