The Research On Reactive Power Compensation Device Online Monitoring System Of Distribution Network

With the fast development of economic and electric load growing, power quality to powerusers is improving day by day, the reactive power compensation and regulation becomes moreand more important as well. The appropriate distribution of reactive power in power system isthe precondition of improving power quality and reducing power system loss. Therefore,reactive power and voltage regulation is the key work in power system.To ensure the security and stability of the grid operation, JM Power Supply Bureau put a lotof manpower and resource during the routine line patrol work, discover a high failure rate ofthe dynamic reactive power compensation devices and the controller, the unnormal in and outof the capacitor, and the burning of the capacitor and so on. But the traditional centralizedreactive power compensation did not focus on the protection of the capacitor and the atresia ofthe fault condition, the upload of the fault information especially, led to the scene of thereactive power compensation device operating status can`t be uploaded to the main station,and can`t realize the flow of information. Not only the reactive power compensation devicecan`t work properly but also can`t play the role of the voltage regulator. Now, the reactivepower compensation equipments belongs to JM Power Supply Bureau are lack of the functionof online monitoring and fault diagnosing, and with the large amount of the compensationpoints, leads to the problem that the failure capacitor can`t be repaired timely, not only haseffect on the user’s normal use of electricity and the standards of service of JM Power SupplyBureau, but also wastes a lot of manpower and resources.Therefore, it is a viable method to put into using a new generation of intelligent low voltagereactive power compensation device which can realize reactive power compensation, on-linemonitoring fault diagnosis and warning and other functions in order to solve the problemdiscovered in JM Power Supply Bureau.To solve the problem of Reactive power compensation equipment breakdown frequentlyof10kV power distribution network, unable to be discovered timely and wasting a lot ofmanpower and resource, this paper proposes one method to use the JST-C20SeriesLow-voltage Intelligent Capacitors to solve the problem, and unifies the idle workcompensation optimization computation, formulate the idle work optimization compensationplan for several typical lines, analysis the validity of this method on improving voltage quality,energy saving and on-line monitoring and fault diagnosis.