高压直流输电换流阀阀塔漏水检测功能设计与实现

针对高压直流输电换流站现场换流阀阀塔的漏水检测需求,提出了一种采用光信号回路检测方法。方案中包括水位计和检测模块两个部分,两者通过光纤连接。检测模块自发自收光信号,当阀塔漏水时,集水器将泄漏的水汇集到水位计,水位计检测水位,阻断信号光纤检测信号,检测模块检测不到光信号,则产生相应事件。采用本方案研制的漏水监测装置,监测准确、可靠,满足现场检测要求,已在哈密至郑州等多条高压直流输电工程中应用。

Design and Implementation of Converter Valve leak detectingin UHVDC Converter Valve

In view of the detecting requirements of converter valve leakage in HVDC converter station , this paper pro-poses a detection method based on optical fiber loop .The detector includes two parts:water level gauge and detection module , which are connected by fiber .Detection module emits light pulse and receives it .The fiber loop would be cut by water level gauge when the valve leaks;and the detection module will create alarm information when it can ’ t re-ceive light pulse .The function design is effective and reliable , it’ s satisfied requirement of project .The device has been used for detecting converter valve leakage in several converter stations including Hami -Zhengzhou HVDC .