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Reactive compensation controller

A technology for compensating controllers and processors, applied in reactive power compensation, reactive power adjustment/elimination/compensation, instruments, etc., can solve problems such as failure to set overcurrent, overvoltage, and operating status fault detection and control functions, etc. Achieve the effect of increasing energy-saving performance functions, improving service life, and improving fault tolerance

Inactive Publication Date: 2011-08-10
BEIJING URBAN TING POINTS TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is not possible to set the over-current, over-voltage, operating status and fault detection control functions

Method used

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Embodiment Construction

[0019] In order to enable those skilled in the art to implement the technical solutions of the present invention, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0020] The invention provides a reactive power compensation controller, such as figure 1 shown, including:

[0021] Microprocessor circuit 6, which takes the microprocessor as the core, is used to control A / D sampling, switch signal sampling, switch control signal output and calculate grid parameters, calculate reactive power demand, execute capacitor bank switching strategy, and perform fault Diagnose and troubleshoot, analyze equipment operating performance.

[0022] Through the AC voltage and current sampling circuit 1, the voltage and current of the power grid are sampled and A / D converted, and the voltage and current values ​​of the power grid are measured, and the power factor, active power and reactive power...

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Abstract

The invention discloses a reactive compensation controller which is a microprocessor circuit comprising a processor, an analogue / digital (A / D) circuit connected or integrated with the processor, and a sampling hold circuit. An alternating current (AC) signal sampling circuit comprises an AC voltage sampling circuit, an AC current sampling circuit and a signal regulating circuit which are connected with the A / D circuit; a temperature sampling circuit comprises a temperature analogue sampling circuit and a signal regulating circuit which are connected with the A / D circuit; a switch signal sampling circuit comprises an optocoupler isolation and overcurrent protection circuit which is connected with the processor; a communication interface comprises a communication circuit which is in Uart connection with the processor; and an AC sampling circuit is connected with the voltage and current of the power grid as well as the current of a capacitor bank loop to carry out sampling. According to the invention, the functions of strong current control, weak current control, operation monitoring and fault protection are integrated through high-strength isolation, the function of online monitoring on the operation state and loop fault of a capacitor loop is added, so that fault loop isolation and alarming can be carried out in time so as to ensure the normal and stable operation of equipment.

Description

technical field [0001] The invention relates to a reactive power compensation controller, in particular to a comprehensive controller of an explosion-proof dynamic reactive power compensation device used in coal mine substations or power distribution stations. Background technique [0002] The reactive power compensation device is a device that can stabilize the grid voltage, improve the quality of grid power supply and the utilization rate of transformers, save electric energy, and improve the reliability of power consumption. [0003] In addition to the normal reactive power compensation function, the reactive power compensation device used in underground coal mines also needs to have sufficient reliability of the device itself, and be able to monitor the operating status of the main components of the device, automatically diagnose and deal with faults, and take corrective measures for abnormalities in the power grid. Make an appropriate response to avoid the device runnin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00H02J3/18H02H7/00
CPCY02E40/30
Inventor 万剑伟左文仓温要冲李鹏飞
Owner BEIJING URBAN TING POINTS TECH
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