Low-voltage intelligent electric meter electricity-stealing checking device

Abstract

The invention discloses a low-voltage intelligent electric meter electricity-stealing checking device. The low-voltage intelligent electric meter electricity-stealing checking device comprises an electricity-checking pen, a first tong-type ammeter and a second tong-type ammeter. The electricity-checking pen, the output end of the first tong-type ammeter and the output end of the second tong-type ammeter are respectively connected with an electricity-stealing analysis meter through wires, and the electricity-stealing analysis meter comprises a single chip microcomputer, a power source module, an alarm circuit and a display unit. The output end of the power source module is respectively connected with the single chip microcomputer, the alarm circuit and the display unit, the input end of the single chip microcomputer is respectively connected with the electricity-checking pen, the output end of the first tong-type ammeter and the output end of the second tong-type ammeter, and the output end of the single chip microcomputer is respectively connected with the alarm circuit and the display unit. The low-voltage intelligent electric meter electricity-stealing checking device is simple in structure, low in cost and high in safety and reliability, is applied to a low-voltage grid to conduct checking on whether a user of an intelligent electric meter has electricity-stealing behaviors or not, is capable of precisely judging whether the electricity-stealing behaviors happen or not so as to timely stop the electricity-stealing behaviors, and reduces losses of a power supply department.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a device for checking electricity stealing behaviors applied to low-voltage users. Background technique [0002] With the increasing development of the smart grid, the demand for matching intelligent user terminals is also increasing. The smart meter is a new type of electric energy meter and the smart terminal of the smart grid. It is mainly used in the low-voltage power grid. In addition to the metering function of the basic electricity consumption of the traditional meter, it also has the function of prepayment, which does not require manual meter reading, avoiding the inconvenience caused by manual meter reading to users, and at the same time solving the problem of difficulty in charging. On this basis, in order to adapt to the smart grid, the smart meter also has a hardware clock and a complete communication interface, the reliability and security are greatly improved,...

AI Technical Summary

Problems solved by technology

[0003] However, in order to seek illegal benefits, individual electricity users have repeatedly banned electricity theft

The early anti-stealing technology mainly sealed the fastening screws used to fasten the live wire and the neutral wire on the metering device. It is easy to be affected by natural factors such as the environment and climate, and naturally fall off, causing misjudgment of electricity stealing behavior, causing misunderstanding between power supply companies and users, and is no longer used at present, which provides a basis for stealing electricity for users

At present, the most used and most dangerous methods of stealing electricity are direct wiring in front of the smart meter, connecting the zero line and live wire at the outlet of the smart meter, modifying the internal circuit of the smart meter or cutting off the external circuit of the meter. , the purpose of which is to prevent the current from passing through the smart meter to achieve the purpose of stealing electricity and bring greater losses to the power supply department

Images