Smart grid power metering anti-theft control terminal

Abstract

The invention provides a smart power grid power measurement and electricity larceny prevention control terminal. A direct-current power supply unit is connected with an alternating-current power supply, a relay (KM1) is connected to two ends of the power supply in parallel, and an energy storage unit (E) is connected to two ends of the direct-current power supply unit (U) through normally opened contacts (KM1) of the relay (KM1). A remote control receiver is connected to two ends of the power supply in parallel and is controlled by a remote control transmitter. A duplex-winding magnetic latching relay first winding (TQ1) is in series connection with a normally opened contacts (YM1) of the relay for reset control of the remote control receiver and then is connected to two ends of the energy storage unit (E) in parallel. A duplex-winding magnetic latching relay second winding (TQ2) is in series connection with a normally closed contacts (YK2) of the relay for overhaul control of the remote control receiver and a gate controlled switch (CK) of a metering box and then is connected to two ends of the energy storage unit (E) in parallel, and a normally opened contact (TQ2) of the duplex-winding magnetic latching relay second winding (TQ2) is used for being connected with and controlling a breaker tripping circuit. By means of optimization design, daily power consumption of the circuit is reduced, heating amount is redcued, and the smart power grid power measurement and electricity larceny prevention control terminal is reliable in operation.

Description

technical field [0001] The invention belongs to the field of power metering, and in particular, the invention relates to an anti-stealing electric circuit for smart grid power metering. Background technique [0002] In the currently used power metering device, anti-stealing devices are installed on the cabinet door and inside the cabinet of the metering device in consideration of the need to prevent electricity theft. The application principles of the anti-stealing device include: infrared induction principle, mechanical switch triggering anti-stealing circuit, etc., thereby triggering the action mechanism of the subsequent stage to respond to stealing electricity, for example: disconnecting the power supply circuit by triggering the tripping coil, and together Trigger the sound and light alarm device. [0003] Considering that after the power supply circuit is out of power, it is still necessary to maintain the monitoring of illegal operations (for example, during this pow...

AI Technical Summary

Problems solved by technology

The above two are combined together, contradicting each other, resulting in unbalanced results, problems such as misoperation and low success rate of anti-stealing electricity, and cannot meet the high reliability requirements of the power industry

[0005] The circuit part of the existing anti-stealing metering device, due to the lack of optimized design, consumes a lot of power, and the circuit components generate heat, which reduces the reliability of the device

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