On-line intelligent oil compensating device for main transformer load switch

The utility model relates to an on-line intelligent oil compensating device for a main transformer load switch. An oil compensating valve of the main transformer load switch is connected to an oil feeding electromagnetic valve by virtue of an oil feeding connecting pipe while the other end of the oil feeding electromagnetic valve is connected to the oil outlet end of a three-way connecting pipe, the oil inlet end of the three-way connecting pipe is connected to an inlet of a frequency converting oil pump, and an inlet of the frequency converting oil pump is connected with an oil outlet vale of an oil storage tank; the oil discharge end of the three-way connecting pipe is connected with an oil discharge valve, and the three-way connecting pipe is provided with a limited voltage protective device and a control module; a conservator of the main feeding load switch is provided with an electric contact oil level indicator; the frequency converting oil pump, the limited voltage protective device, the oil feeding electromagnetic valve and the electric contact oil level indicator are electrically connected to the control module; a release plug is arranged on the top of the frequency converting oil pump and is used for releasing gas and dead oil before oil feeding work. The device provided by the utility model can work on the ground without power failure and climbing and has the time-saving, labor-saving, safe and reliable effects. Compared the conventional oil compensating modes, the device has incomparable advantages.