Energy-saving intelligent filter compensation metering comprehensive protection automatic transmission

Abstract

The invention relates to the technical field of electric matched products, in particular to an energy-saving intelligent filter compensation metering comprehensive protection automatic transmission which comprises a box body. The inside of the box body is provided with an active power filter, a connection electric reactor, an isolation switch, a current transformer and an outgoing breaker. The active power filter is connected to the secondary side of the current transformer of a grid through the connection electric reactor. The upper end of the isolation switch is directly connected with the secondary side of the current transformer of the grid, and the lower end of the isolation switch is connected with the outgoing breaker through the isolation switch in an outgoing mode. According to the automatic transmission, harmonic currents on a bus are eliminated in real time, the operation efficiency of the transformer is improved, operation safety of the transformer and electric equipment is guaranteed, the phenomena of abnormal operation of the transformer, system resonance and compensation capacitor overflowing caused by harmonic currents are avoided, the service life of the equipment is prolonged, and the phenomenon that a capacitance box often fails in the prior art is avoided. The box transformer structure technically has the advantages of being modularized, small in size, attractive in appearance, safe and reliable in operation, convenient to maintain and the like.

Description

technical field [0001] The invention relates to the technical field of electric power supporting products, in particular to an energy-saving intelligent filter compensation measurement comprehensive protection excellent wave box. Background technique [0002] With the continuous deepening of rural power grid transformation, a large number of distribution transformer integrated distribution cabinets or JP cabinets are installed on the secondary side of distribution transformers in urban and rural power grids. The integrated power distribution cabinet of distribution transformer is mainly composed of isolating switch, circuit breaker, capacitor, switching device, compensation controller and other outdoor power distribution and compensation equipment, and adopts a variety of flexible power distribution schemes. The cabinet body is divided into four independent compartments for incoming wires, outgoing wires, capacitors, and metering. Users can choose the lead-in methods such as...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an energy-saving intelligent filter compensation metering comprehensive protection optimal wave box, which overcomes the slow response speed of the traditional compensator, the compensation effect cannot be accurately controlled, and it is easy to cause parallel resonance with the power grid and switching oscillations. Disadvantages of self-destruct

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