CN102072977A - Automatic power-off method of intelligent electric energy meter in electricity stealing process - Google Patents

Abstract

The invention discloses an automatic power-off method of an intelligent electric energy meter in an electricity stealing process. The method mainly comprises the following steps that: a detecting loop is added into the current measuring loop of the intelligent electric energy meter, the precision of the detecting loop is lower than that of the measuring loop, and the numerical value of the detecting loop is less than that of the measuring loop; a sampling mutual inductor of which the secondary pole is a duplex winding is adopted for the electric energy meter which is sampled by a current mutual inductor, and for the electric energy meter which is sampled by a manganin current divider, sampling resistance is a little more than normal working resistance; the detecting loop is compared with a metering loop in a host processor, if the numerical value measured by the metering loop is more than that of the detecting loop, the metering is normal, and if the numerical value measured by the metering loop is less than that of the detecting loop, the processor sends a signal, a control mechanism is driven to perform power-off operation, and a corresponding signal is output by alarming. By expanding the functions of an intelligent meter body, the intelligent meter is economic, practical, safe and convenient and is more intelligentized, and the electricity stealing can be effectively prevented.

Description

The method of cutting off the power supply automatically during the intelligent electric energy meter stealing

Technical field

The invention belongs to the anti-theft electricity technology field, the method for outage automatically when being specifically related to a kind of intelligent electric energy meter stealing.

Background technology

Intelligent electric energy meter is a kind of novel full electronic electric energy meter, it is all multi-functional to have electric energy metrical, information stores and processing, monitoring in real time, control automatically, information interaction etc., support actual needs such as bidirectional measuring, ladder electricity price, tou power price, time-of-use tariffs, this intelligent electric energy meter has multiple communication modes, infrared communication, power line carrier, public network wireless telecommunications etc. have been comprised, coming into operation of it can significantly change the environment and the behavior of the present electricity consumption of people, also is convenient to the management of power use of power supply department.Along with the continuous progress of science and technology, various stealing technology emerge in an endless stream, and the intelligent electric energy meter stealing also takes place often, in view of intelligent electric energy meter possesses above multiple function, in case wreck, will cause very big influence to whole electric power system.

Summary of the invention

Automatically the method for outage when the invention provides a kind of intelligent electric energy meter stealing that can effectively prevent stealing, safe ready.

Automatically the method for outage during a kind of intelligent electric energy meter stealing, described method mainly comprises following measure:

A, increase by one at the current measurement circuit of intelligent electric energy meter and detect the loop, detect the loop precision and be lower than and measure the loop, numerical value is less than measuring the loop;

B, to adopt secondary for the electric energy meter of current transformer sampling be doublewound sampling mutual inductor, and the electric energy meter sample resistance of sampling for manganese copper diverter should be slightly larger than operate as normal resistance;

C, detect that the loop enters primary processor and measurement loop compares, if the numerical value that measurement loop records then measures normally greater than detecting the loop, if the numerical value that measurement loop records is less than the numerical value that detects the loop, then send signal by processor, drive controlling mechanism carries out power operation, and by the output corresponding signal of reporting to the police.

The invention has the beneficial effects as follows: economical and practical because the present invention expands by the function of intelligent electric energy meter body, make intelligent electric energy meter intelligent more, safe ready, can effectively prevent stealing.

Embodiment

Below by specific embodiment, further specify advantage of the present invention:

Automatically the method for outage during a kind of intelligent electric energy meter stealing, described method mainly comprises following measure: increase by one at the current measurement circuit of intelligent electric energy meter and detect the loop, detect the loop precision and be lower than and measure the loop, numerical value is less than measuring the loop; Secondary for the electric energy meter employing of current transformer sampling is doublewound sampling mutual inductor, and the electric energy meter sample resistance of sampling for manganese copper diverter should be slightly larger than operate as normal resistance; The detection loop enters primary processor and measurement loop compares, if the numerical value that measurement loop records then measures normally greater than detecting the loop, if the numerical value that measurement loop records is less than the numerical value that detects the loop, then send signal by processor, drive controlling mechanism carries out power operation, and by the output corresponding signal of reporting to the police.

The present invention expands by the function of intelligence table body, and is economical and practical, makes intelligence table intelligent more, safe ready, can effectively prevent stealing.

Claims (1)

1. the method for outage automatically during an intelligent electric energy meter stealing is characterized in that described method comprises following measure:

A, increase by one at the current measurement circuit of intelligent electric energy meter and detect the loop, detect the loop precision and be lower than and measure the loop, numerical value is less than measuring the loop;

B, to adopt secondary for the electric energy meter of current transformer sampling be doublewound sampling mutual inductor, and the electric energy meter sample resistance of sampling for manganese copper diverter should be slightly larger than operate as normal resistance;

C, detect that the loop enters primary processor and measurement loop compares, if the numerical value that measurement loop records then measures normally greater than detecting the loop, if the numerical value that measurement loop records is less than the numerical value that detects the loop, then send signal by processor, drive controlling mechanism carries out power operation, and by the output corresponding signal of reporting to the police.