Electric energy meter test apparatus capable of avoiding door-to-door inspection and inter-user wrongly electricity metering

Abstract

The present invention relates to an electric energy meter test apparatus capable of avoiding door-to-door inspection and inter-user wrongly electricity metering. The electric energy meter test apparatus is used for detecting whether corresponding relationships between users and electric energy meters are correct. The electric energy meter test apparatus includes a signal feed-in device, a wave blocking device and a signal sensing device; the signal feed-in device realizes automatic acquisition of electric energy meter information, modulation of signals and injection of the signals to a power line; the wave blocking device can ensure the one-way transmission of wave carrier signals, prevent the wave carrier signals from being transmitted to electric energy meter incoming line ends; and the signal sensing device mainly realizes the strength detection and content demodulation of the wave carrier signals. With the electric energy meter test apparatus of the invention adopted, the problem that inter-user wrongly electricity metering requires door-to-door inspection in the prior art can be solved, the working efficiency of wrong wiring inspection can be improved, and the life of the users will not be disturbed. The electric energy meter test apparatus has high reliability.

Description

technical field [0001] The invention relates to the field of electric power system detection equipment, in particular to a set of detection equipment and method for electric energy meters not entering households and connecting households. Background technique [0002] In the process of power supply service, due to the lax supervision of the project implementation process, the problem of chaining of electric energy meters frequently occurs. In order to improve the service level of power metering and user satisfaction, it is necessary to solve the problem of "connecting electric energy meters to households". However, since the power lines are generally laid inside the wall, it is difficult to realize the detection of electric energy meters. The traditional residential energy meter series inspection method adopts the method of power outage detection, which has a great impact on the lives of residents and affects the quality of power supply service and user experience. Some ne...

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Problems solved by technology

A small number of solutions using power line communication only inject high and low levels at one end of the power line and detect level changes at the other end, or change line physical parameters such as line switching capacitance, and then measure various parameters such as voltage, current, and power factor for joint judgment. The confidence level of the conclusion is not high; in addition, these schemes do not consider that when the signal is fed into the line, the signal itself will flow into other user circuits through the power grid, thus affecting the correctness of the detection results; at the same time, most detection schemes that require electric energy meter information need to manually input information such as the meter number , but in fact such information can be automatically obtained from the energy meter in the form of copying

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