New type low voltage smart reactive power compensator

Abstract

The invention relates to a new type low voltage smart reactive power compensator which comprises a main controller module, a reactive power acquiring module, a serial communication module, a data storage module, a keyboard interface module, a protection and warning module, and a capacitance switching control module wherein the reactive power acquiring module is connected to the P0 interface of the main controller module, the serial communication module is connected to the P1.0 and P1.1 interfaces of the main controller module respectively for receiving and sending, the data storage module is connected to the P2 interface of the main controller module, the input and display of the keyboard interface module are connected to the P3.0 and P3.1 interfaces respectively, the protection and warning module is connected to the P4 interface of the main controller module, and the capacitance switching module is connected with the P5 interface of the main controller module. With the compensator, it is possible to perform timely and stable reactive compensation to a low voltage power distribution network. Cost-effective and flexible in use, the compensator can achieve rapid switching between capacitances very accurately.

Description

technical field [0001] The invention belongs to the technical field of electric power reactive power compensation, and in particular relates to a novel low-voltage intelligent reactive power compensation device. Background technique [0002] In the power system, the power quality is closely related to the reactive power balance of the system. A large amount of reactive power transmitted in the line will make the power quality drop sharply and cause adverse effects on users. In the 0.4kV low-voltage power grid, the power factor of the power grid and the power quality are improved through reactive power compensation. Most of the traditional low-voltage reactive power compensation devices have low A / D sampling accuracy and large amount of calculation, which requires high performance of the core processor, resulting in complex software and hardware design of the compensation system, and low control accuracy and response Defects such as slow speed. Contents of the invention ...

AI Technical Summary

Problems solved by technology

Most of the traditional low-voltage reactive power compensation devices have low A / D sampling accuracy and large amount of calculation, which requires high performance of the core processor, resulting in complex software and hardware design of the compensation system, and low control accuracy and response Defects such as slow speed

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