Portable electricity stealing detection terminal and electricity stealing detection method

Abstract

The invention provides a portable electricity stealing detection terminal and an electricity stealing detection method. The terminal comprises a terminal host, a current transformer and an electric energy meter pulse sampling module, wherein the current transformer acquires current signals at two sides of a transformer on a power line and feeds the current signals back to the terminal host; the electric energy meter pulse sampling module acquires electric energy meter pulse signals and transmits the electric energy meter pulse signals to the terminal host; the terminal host judges whether metering of the electric energy meter is correct according to actual metering parameters of the electric energy meter and the electric energy meter pulse signals, the actual current changes of the transformer are calculated according to current signals, the actual current changes and identification current changes of the transformer are compared, and when metering of the electric energy meter is incorrect or the difference between the actual current changes and the identification current changes is larger than a preset change difference, an electricity stealing behavior is judged to exist. The portable electricity stealing detection terminal and the electricity stealing detection method provided by the invention can accurately detect the electricity stealing behavior of the user.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a portable electricity theft detection terminal and a electricity theft detection method. Background technique [0002] For a long time, driven by interests, some electricity users have tried every means to tamper with electricity metering equipment (for example, electric energy meters) to steal electricity. Stealing electricity has caused huge losses to the power operation company, interfered with the normal order of power supply and consumption, and may cause grid safety accidents, and even cause casualties. The loss of electric energy increases the line loss and increases the burden on other legitimate users. , The consequences of stealing electricity are not simply a problem of power loss, but also affect the safe operation of the power grid and social stability. [0003] Electricity theft has always plagued the power sector, and power companies and research institut...

AI Technical Summary

Problems solved by technology

Through research, some methods and equipment for preventing and discovering electricity theft have also been proposed, such as adding event recording functions to metering meters, intelligent lead seals, monitoring for illegal opening of metering boxes, and on-site meter calibration equipment. The rectification has indeed played a certain role. However, with the advancement of science and technology, the technology of stealing electricity has been further improved, and the behavior of stealing electricity has become more and more professional and high-tech. Simple and easy-to-check methods of stealing electricity, destroying and replacing metering equipment, and changing metering parameters, are transformed into high-tech and intelligent methods of stealing electricity such as strong magnetic interference, high-frequency interference, and remote control of metering equipment. The metering equipment is affected and interfered from the outside without destroying the metering equipment, and the stealing equipment is concealed. Without professional testing equipment, it is difficult to find and find the above-mentioned stealing equipment on site, which brings unprecedented challenges to the on-site investigation and handling of electricity theft. In addition, due to the uncertainty of the interference location and environment when this type of electricity stealing method is used, even if this type of electricity stealing device is found on site, it is impossible to detect this type of behavior at the site of electricity stealing due to the lack of corresponding detection equipment. Make qualitative or quantitative analysis, which makes it difficult for power supply companies to obtain evidence, analyze and handle problems in the process of investigating and dealing with high-tech electricity theft

[0004] The existing methods of investigating and dealing with electricity theft basically rely on manual inspection and elimination, or use a large number of detection equipment, such as multimeters, clamp meters, phase meters, on-site meter calibration devices, etc. In actual use, these methods and equipment can only detect The stealing method or stealing equipment corresponding to the corresponding detection equipment cannot comprehensively and effectively confirm the stealing behavior, find and locate the stealing equipment, and quantitatively analyze the stealing power

In addition, a large amount of equipment is not easy to carry, and some equipment, such as the on-site meter calibration device, still has the problem of accessing the on-site working power supply, which is extremely inconvenient to carry and use

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