Reactive power and harmonic protection automatic control switch

Abstract

The invention relates to a relative power protection device for a power distribution network system, in particular to a reactive power and harmonic protection automatic control switch. The reactive power and harmonic protection automatic control switch is characterized in that a central processor, a remote wireless annunciator and a controller are all arranged on a circuit board; the controller is provided with a power amplifier; a reactive data signal is connected with an input circuit of the central processor through a data line; the output end of a remote wireless annunciator is connected with another input end of the central processor; one output end of the central processor is connected with the remote wireless annunciator through a data line; the other output end of the central processor is connected with the input end of the controller through a data line; the output end of the controller and the power amplifier are connected through an output data line of the power amplifier; the power amplifier is connected with a power supply. User data with large impact loads in the power distribution network system are collected through the powerful functions of the modern microcomputer information processing technology, scientific calculation is conducted, and safe and stable running of a whole network is ensured.

Description

technical field [0001] The invention relates to a reactive power protection device of a power distribution network system, in particular to a reactive power harmonic protection automatic control switch with reliable operation and safe use. Background technique [0002] We know that the reactive power switching switch is an important device for switching reactive power capacitors in the power distribution system. Reliable control of the reactive power of the power grid is an important guarantee for the safe and stable operation of the transmission network. "Guidelines for Rural Power Grid Reactive Power Optimization and Compensation Technology" pointed out that: the random reactive power compensation capacity of high and low voltage user motors should be determined on the basis of the motor load size, load characteristics, and full load power factor. Or it is the principle not to absorb reactive power from the grid at peak load. "Power Quality Public Network Harmonics" also ...

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Problems solved by technology

[0003] The existing reactive power switching switch is only suitable for ordinary control capacitor switching equipment, and its function is relatively single. It can only switch reactive power capacitors. The emergency treatment function of the operation status is a relatively low-level product, which cannot meet the requirements of the current distribution network development, and cannot perform emergency treatment in the event of a system collapse accident

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