As early as the beginning of 1950s, our country is in the power plant and the power supply department to implement the regular maintenance system, which is a kind of periodic maintenance system based on the time cycle. The cycle of maintenance mode, project and so on are based on the traditional experience, on the basis of the individual's quality, operating environment, performance status of different considerations. There are many problems, such as short overhaul period, high frequency of equipment failure, high maintenance cost, large maintenance workload and low power supply reliability. With the development of power industry, the maintenance mode has become more and more big power grid, high voltage, high parameter and high automation.
Edel on the protection of the cable safety operation of integrated system solutions