A METHOD AND APPARATUS FOR MONITORING HYDROGEN LEAKAGE INTO THE GENERATOR STATOR COOLING WATER SYSTEM

摘要

An apparatus for monitoring generator stator cooling system leak hydrogen gas is provided to monitor hydrogen gas leaking to a generator stator cooling system with high sensitivity to prevent accidents caused by leakage of hydrogen gas and restrain oxygen concentration in cooling water from decreasing due to leaked hydrogen. A method for monitoring generator stator cooling system leak hydrogen gas includes a step of separating hydrogen gas from generator stator hydrogen has, a step of detecting the hydrogen gas by using an electrochemical hydrogen gas sensor(5), a step of receiving a signal from the hydrogen gas sensor, converting the signal into gas concentration and indicating the gas concentration, and a step of sounding the alarm when the hydrogen concentration exceeds a predetermined value.