Slight leakage monitoring method for valve cooling system based on temperature compensation and least squares

Disclosed is a slight leakage monitoring method for a valve cooling system based on temperature compensation and least squares. The valve cooling system comprises a main circulation pump, a main filter, a converter valve, an expansion water tank and a cooling tower which are sequentially connected through pipelines and form a loop; the expansion water tank is connected with the main circulation pump and internally provided with a water level sensor; the method has the advantages that the problem that there is no means of detecting slight leakage of cold water in a valve cooling system of a converter station is effectively solved, the method is beneficial to shortening the unplanned power outage time of a direct current system, the stability of the direct current system is improved, and themethod has high popularization and application value. 基于温度补偿和最小二乘法的阀冷系统轻微渗漏监测方法，所述的阀冷系统包括依次通过管道连接并形成回路的主循环泵、主过滤器、换流阀、膨胀水箱、冷却塔；所述的膨胀水箱与主循环泵连接，所述的膨胀水箱内部设有水位传感器；优点是，有效解决换流站阀冷内冷水轻微漏水检测手段空白的问题，有利于减少直流系统非计划停电时间，提高直流系统的稳定性，具有广阔的推广应