Electric ignition system

The invention provides a high-power electric ignition system suitable for thickened oil extradeep well burning development. The electric ignition system comprises a ground power supply system, a double-channel wellhead sealing blowout preventer, a continuous pipe cable, a temperature and pressure monitoring continuous pipe, a continuous pipe rountrip device, a burning wellhead, a gas injection system, a gas injection pipe column, an electric igniter and a temperature and pressure monitoring center, wherein when the continuous pipe rountrip device works, the temperature and pressure monitoring continuous pipe is connected into the gas injection pipe column through a first channel of the double-channel wellhead sealing blowout preventer, the continuous pipe cable and the electric igniter are connected into the gas injection pipe column through a second channel, the continuous pipe cable is in equal-diameter connection with the electric igniter, the ground power supply system supplies power to the electric ignit