Intelligent reactive compensation controller device with master and slave functions

Abstract

The invention discloses an intelligent reactive compensation controller device with master and slave functions. The intelligent reactive compensation controller device is used for controlling the parallel operation of a plurality of sets of reactive compensation capacitors parallelly connected in an electric load system. The device comprises a plurality of controllers, and each controller controls one set of reactive compensation capacitor. In each controller, a power grid data collection circuit is used for collecting data of various analog signals of the electric load system, and the analog signals are converted into corresponding readable digital signals; a logic operation master control circuit is used for carrying out judgment on the magnitude of reactive power and the level of a power factor, and reasonable switching is carried out according to the capacity of the reactive compensation capacitor; a control output circuit is used for converting a switching signal of the logic operation master control circuit into a control method signal needed by the system, and outputting the switching signal for controlling the corresponding reactive compensation capacitor; after a master and a slave are randomly chosen from the controllers, a communication circuit is responsible for communication instructions between the master and the slave, and the switching work is coordinated between the master and the slave.

Description

technical field [0001] The invention belongs to the field of reactive power compensation for electric energy quality, and specifically relates to an intelligent reactive power compensation controller device with master-slave functions. Background technique [0002] With the development of the country, the power demand of enterprises is also increasing, and the high-load power consumption also brings a lot of reactive power consumption. At present, the reactive power compensation device has become a necessary equipment in the electricity consumption of enterprises. When the reactive power demand is large under the same load, due to the influence of the number of control circuits of the traditional reactive power compensation controller and the capacity of the compensation capacitor, it is often difficult for a single set of reactive power compensation device to achieve the compensation effect. At this time, it is necessary to increase the reactive power compensation device. ...

AI Technical Summary

Problems solved by technology

When multiple reactive power compensation controllers collect the reactive power and power factor level of the same load, it will inevitably cause random switching between the devices when switching the compensation capacitor, and the compensation device will be mistakenly switched and frequently switched in the case of load fluctuations. cutting, affecting the compensation effect and reducing the service life of the compensation device

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