Three-phase electronic type multi-functional total voltage loss detection system

Abstract

The invention provides a three-phase electronic type multi-functional total voltage loss detection system. The three-phase electronic type multi-functional total voltage loss detection system comprises a control unit used for judging and recording total voltage loss conditions, a meter reading battery circuit used for providing power for the system, a total voltage loss detection circuit and a signal comparison reference voltage power supply voltage stabilizing circuit. The total voltage loss detection circuit transmits collected and processed voltage signals to the control unit, and the signal comparison reference voltage power supply voltage stabilizing circuit provides stable voltage for the total voltage loss detection circuit. By adding the signal comparison reference voltage power supply voltage stabilizing circuit, power of a signal comparison reference voltage circuit is made to be stable, even if voltage of the meter reading battery circuit decreases, the power of the signal comparison reference voltage circuit cannot be changed, reference voltage output by the signal comparison reference voltage circuit can not be changed either, therefore, the problems of total voltage loss detection is inaccurate and false alarm occurs are solved, electricity quantity compensation can be performed normally after the total voltage loss situation occurs, accurate total voltage loss detection is guaranteed, and economic benefits of power enterprises are guaranteed.

Description

technical field [0001] The invention relates to a three-phase electronic multifunctional full voltage loss detection system. Background technique [0002] In the three-phase power supply system, the power metering device often suffers from voltage loss, and the voltage loss situation is various. According to statistics, among the faults of the metering device, the metering faults caused by the voltage loss account for more than 50% of all faults, and most of them The following is caused by fuse fuse, wiring error or user stealing electricity, which will cause less metering of the metering meter and bring economic losses to the power supply company. [0003] However, the existing three-phase electronic multi-function meters have two main ways to realize the full loss of voltage detection: one is to use the full loss of voltage detection function of the metering chip for monitoring, and this method consumes too much power, making the provided The usage time of the meter read...

AI Technical Summary

Problems solved by technology

[0002] In the three-phase power supply system, the power metering device often suffers from voltage loss, and the voltage loss situation is various. According to statistics, among the faults of the metering device, the metering faults caused by the voltage loss account for more than 50% of all faults, and most of them The following is caused by fuse fuse, wiring error or user stealing electricity, which will cause less metering of the metering meter and bring economic losses to the power supply company

[0003] However, the existing three-phase electronic multi-function meters have two main ways to realize the full loss of voltage detection: one is to use the full loss of voltage detection function of the metering chip for monitoring, and this method consumes too much power, making the provided The usage time of the meter reading battery for full voltage loss detection is too short; the other method uses the combination of full voltage loss detection circuit and metering chip. This method consumes less power, but as the working time goes by, the battery voltage The power supply voltage of the entire loss of voltage detection circuit will also decrease, and the reference voltage output by the signal comparison reference voltage circuit will also change, so that the detection of total loss of voltage will be inaccurate, and false alarms will occur, resulting in inconsistencies between the power supply and the consumer. Necessary disputes lead to the failure of the power company to make up for the lost electricity normally, and the power company suffers economic losses

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