Electricity larceny prevention method

Abstract

The invention discloses an electricity larceny prevention method. The electricity larceny prevention method includes the concrete steps: acquiring the phase current value on a power supply unit output phase line, and damaging the waveform characteristic of a sine wave of each phase alternating current; acquiring the phase current value on the power supply unit output phase line and the partial current values for all the users who are supplied with power by the power supply unit, and transmitting the alternating current of the waveform characteristic of the sine wave to an electricity utilization end; and recovering the waveform characteristic of the sine wave of each phase alternating current at the electricity utilization end, comparing the phase current value with the sum of the partial current values, and determining that electricity larceny exists on a power transmission line of the power supply unit. The electricity larceny prevention method can further reduce occurrence of electricity larceny prevention, and can determine whether electricity larceny occurs on a power supply line by comparing difference between the phase current value and the sum of the partial current values for all the single phase users who are supplied with power by the phase line; and as no technology loss exists on the phase line and the branch lines, for the current value, the intelligence level for electricity larceny prevention alarm can be greatly improved and the defect for false alarm can be avoided.

Description

technical field [0001] The invention relates to a method for preventing theft, in particular to a method for preventing electricity theft. Background technique [0002] In recent years, electricity theft incidents in various cities are on the rise. Stealing electricity not only causes a large amount of property losses to the country and power supply enterprises, but also may cause phase loss, short circuit and other accidents, endangering personal and equipment safety. Therefore, it is an important measure to protect national interests and maintain the order of electricity use to accurately detect and punish electricity theft incidents. [0003] The existing anti-stealing technology inside the smart meter is relatively mature, but there are still difficulties in implementing the anti-stealing technology outside the meter. Because in practical application, there is still a long power supply distance from the main meter to each sub-meter. With the power supply distance, ther...

AI Technical Summary

Problems solved by technology

It can be seen from the above that the power of the main meter includes the power of technical loss, while the power of the sub-meter does not include the power of technical loss, then there is a difference between the power of the main meter and the power of the sub-meter, and how much is the difference? How much is caused by electricity theft is caused by technical loss, which cannot be distinguished in the existing technology, which makes it difficult to determine when setting the alarm threshold. If the threshold is set too large, the effect of the anti-theft alarm is not good. If the threshold is too small, it is easy to generate false positive defects

Therefore, the existing anti-stealing scheme based on power comparison is difficult to accurately realize intelligent alarm in practical applications due to technical loss.