Novel commutation switch device

Abstract

The invention provides a novel commutation switch device. The device comprises a monitoring unit, a commutation switch unit and a compensation unit, wherein the monitoring control comprises a controlmodule, an analog quantity measurement module, a communication switch trigger and feedback module, a compensation trigger and feedback module and a communication module, the control module is used forreceiving a commutation command transmitted from the communication module and receiving a voltage/current signal acquired by the analog quantity measurement module, and information returned from morethan two modules is received by sending out a control command on the commutation switch unit and the compensation unit according to a certain control strategy. By the commutation switch device, the commutation time of a conventional commutation switch-type three-phase load unbalanced management device during the commutation process can be prevented, zero switching time can be achieved, and the power supply continuity is ensured.

Description

technical field [0001] This application relates to a new type of phase change switch device, which can be applied to the distribution station area to solve the unbalanced three-phase load problem in the station area. Background technique [0002] The distribution network is at the end of the power system, with long transmission distances, multiple step-down levels, and a wide range of points. The operation status is greatly affected by the operation mode and load changes. These conditions cause the distribution network to be in non-economic operation in a certain area and period of time. state, it is necessary to coordinate and control indicators such as voltage and reactive power. In the low-voltage three-phase four-wire power supply system, most of the power users are single-phase loads or mixed single-phase and three-phase loads, and the loads are different and the power consumption time is different, which leads to the three-phase load of the low-voltage power supply sys...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the current commutation switch type three-phase load unbalance control device inevitably exists in the commutation process, the commutation time may affect the continuity of the user's electricity consumption. This invention proposes a new phase commutation switch device, which not only ensures the The phase switch type three-phase load unbalance control device has the advantages of low loss, and avoids the time of commutation and power failure, which makes up for its own shortcomings.

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