A power plant is a power plant that converts some form of raw energy into electrical energy for use in fixed installations or transportation, such as thermal, hydro, steam, diesel or nuclear power plants. With the development of society in the power system electrical engineering of automation is also increasing the proportion. China’s electrical engineering technology needs to be innovative, the intelligence of the power system has been a great progress, the mode of electrical intelligence effectively promotes the development of China’s electrical engineering system, the development of the electrical power system can not be separated from the electrical automation.