Application Research On State Mantenance AC/DC Power Supply System In Substations

Maintenance of electric power equipment is the power supply company is the most basic work is to ensure that the power equipment maintenance, health, to ensure that the main means of the stable operation of power grid.With the substation automation and intelligent substation has become the change rapidly, the only choice for the construction of a new generation of substation. Stand with AC and DC power supply system with intelligent substation were born together, the requirements are also consistent and intelligent substation, automation, intelligent, information-based.Now the China State Grid Corp of their management requirements of the power grid is intelligent, strong, the new substation is integrated intelligent station, as the integration of AC and DC power supply system of substation operation, power supply and communication power supply must also keep up with the development of the times. The maintenance mode must also be improved, the maintenance mode is more effective, more scientific, operation and maintenance can now ensure good intelligent substation, strong power grid, intelligent.Firstly, the background and significance of the implementation of maintenance mode of integration of AC and DC power of state maintenance, discovered by regularly to the state inspection in the process of the development of possible problems, which carry out the design.We know that the AC and DC power system substation including the various parts of the AC input, switching power supply, battery, DC circuit breaker, feeder grounding, theconversion module, the state collection of links, upload the integration of remote monitoring and control center, relying on analysis and treatment program of remote monitoring center to conduct a comprehensive analysis,by the state evaluation model and remote control program, so as to realize the fault diagnosis, condition evaluation and decision suggestions of AC and DC power supply management throughout the period, to realize the condition based maintenance of AC and DC power supply. The unit of Liaoning Tiling Power Company substation practical application shows that the system, after the application of substation operation and maintenance, repair andother professional staff havesignificantly reduced, equipment defects can be predicted in advance, and then decrease the equipment failure rate, fault handling is also more timely. Save a lot of manpower, material and financial resources. The power grid stable operation, safety is ensured.Finally, this paper applied the above research results and combined with the engineering project, expounds the design idea and function framework of AC DC power status maintenance management system, use the function module of the system and the description.