Electricity-stealing prevention method of distribution transformer and system thereof

Abstract

The invention relates to an electricity-stealing prevention method of a distribution transformer and a system thereof. According to the method of the invention, the electricity-stealing prevention system firstly acquires power supply data of a first side line and a second side line of the transformer. Then the power supply data of at least one side line in the first side line and the second side line is converted so as to determine whether the electricity stealing is happened based on comparison of the power supply data. According to the invention, the power supply data is converted and then the data is compared so that whether the electricity stealing is happened in the power supply line of the transformer can be effectively determined. Related measurements can be timely adopted and various kinds of losses caused by the electricity stealing can be effectively reduced.

Description

technical field [0001] The invention belongs to the field of power grids, and in particular relates to a power stealing prevention method and system for distribution transformers. Background technique [0002] At present, the commonly used method to prevent electricity theft is to use physical isolation technology between the secondary outlet of the transformer and the watt-hour meter. The device, in which all lead wires are shielded by a non-detachable metal isolation layer, and the alternator is installed in the distribution transformer body. In this scheme, the converter on the low-voltage side is installed in the transformer body, and the lead wires of the converter are connected to the meter box through a sealed box and a metal pipe, thereby preventing electricity theft. For another example, in the Chinese patent literature with the patent number CN97204577, a low-voltage metering anti-theft device for distribution transformers is disclosed, which essentially prevents ...

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Problems solved by technology

[0003] Although the physical isolation method will increase the difficulty of stealing electricity for users, these anti-stealing methods are still difficult to prevent some users from stealing electricity, and some users often change the connection of lead wires at the isolation point to Steal electricity by skipping the monitoring of watt-hour meters and monitoring equipment, and restore the changed lead wires to the original state before the electric workers come to the site for inspection, thereby avoiding the discovery of electricity theft. Therefore, there is an urgent need A new method of anti-tampering, in order to produce products that replace the current physical anti-tampering isolation based on this method

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