Automatic-coupling continuous regulable quick reactive-power automatic compensation device

Abstract

The invention relates to an automatic-coupling continuous regulable quick reactive-power automatic compensation device which comprises a DSP (Digital Signal Processing) microprocessor and a voltage regulator assembly, a circuit breaker, a voltage and current sampling unit and a switch information sampling unit which are connected with the microprocessor. In the invention, an autotransformer and the voltage regulator assembly are adopted for analyzing the load variation tendency, the reactive power of a system, the harmonic content of the system and voltage fluctuation conditions according to the inductive reactive power variation of the system by collecting the voltage, the current and power factors of an electrical network in real time; and a tapping switch of the voltage regulator assembly is controlled by using a fuzzy control technology for dynamically regulating the voltage of both ends of a capacitor so as to realize dynamic optimization compensation and achieve the purpose that the reactive power compensation capacity is automatically tracked along with the variation of the load reactive power capacity of the system. According to the invention, the shock to the electrical network and overvoltage and overcurrent shock to a capacitor caused by packet switching by applying a microcomputer to control the capacitor in a traditional reactive power compensation device are eliminated, and the automatic-coupling continuous regulable quick reactive-power automatic compensation device has the characteristics of high acting speed, simple structure and low cost.

Description

technical field [0001] The invention relates to a reactive power compensation device, in particular to a self-coupling continuous adjustable fast reactive power automatic compensation device. Background technique [0002] At present, the reactive power compensation equipment used in the power supply system uses the on-load tap changer to adjust the voltage. Since the on-load tap-changer is adjusted by the motor to adjust the voltage of each gear, the adjustment speed is slow and cannot keep up with the change of the load, and the action speed is slow. , the structure is complex, and it is not conducive to the work site where the load changes rapidly. In addition, group switching capacitor banks are used to compensate reactive power, which is likely to cause impacts on the grid and overvoltage and overcurrent impacts on capacitors, reducing the service life of capacitors. Contents of the invention [0003] Aiming at the above disadvantages, the present invention provides a...

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Problems solved by technology

[0002] At present, the reactive power compensation equipment used in the power supply system uses the on-load tap changer to adjust the voltage. Since the on-load tap-changer is adjusted by the motor to adjust the voltage of each gear, the adjustment speed is slow and cannot keep up with the change of the load, and the action speed is slow. , the structure is complex, and it is not conducive to the work site where the load changes rapidly

In addition, group switching capacitor banks are used to compensate reactive power, which is likely to cause impact on the power grid and overvoltage and overcurrent impact on capacitors, reducing the service life of capacitors

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