Reactive compensation controller for transformer in municipal court

Abstract

The invention discloses a reactive compensation controller for a transformer in a municipal court. The reactive compensation controller is composed of a CPU, a control circuit output chip, an ADC sampling chip, an RS485 interface and a GSM communication module. The CPU is connected with the control circuit output chip, the ADC sampling chip, the RS485 interface and the GSM communication module; and the ADC sampling chip is also connected to an alternating-current sampling chip and an alternating-current analog sampling and temperature sampling chip. According to the invention, the main control chip uses a 32-bit ARM core chip K60 and a control mode of a key with liquid crystal is abandoned. On the basis of the GSM communication module, real-time monitoring is carried out and a short message is sent to a power supply department and user alarm information is sent out in real time, so that the power supply department and the user can monitor the power factor of the user terminal in real time by the control unit. The reactive compensation controller is used for 0.4-KV-side reactive compensation in a municipal distribution network and is capable of monitoring a power factor of a distribution loop remotely; the losses of the transformer and the lines are reduced; and the power supply efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of distribution automation of municipal power grids, and in particular relates to a reactive power compensation controller for municipal power grid transformers. Background technique [0002] With the development of the social and economic level, the demand for electric energy for municipal power consumption along with the development of the city is also increasing, and the requirements for the quality of electric energy are also getting higher and higher. In order to improve the power quality of the municipal distribution network, it is a more appropriate and economical way to add reactive power compensation equipment to the transformer station area. By performing capacitive reactive power compensation on the 0.4KV side, the power factor of the line in the station area can be improved, the voltage can be stabilized, the loss of the transformer and the line can be reduced, and the power quality can be improv...

AI Technical Summary

Problems solved by technology

However, there are certain disadvantages. Conventional single-chip microcomputers have limited resources and cannot run more complex reactive power compensation strategies. At the same time, the operation of liquid crystal combined with buttons is inconvenient and easy to be damaged. At the same time, the volume of the device is increased.

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