Gateway electric energy meter online replacing mode electric quantity loss compensation metering system

Abstract

The invention provides a gateway electric energy meter online replacing mode electric quantity loss compensation metering system comprising a power supply switching unit, a power supply unit, a 0.2S class three-phase multifunctional electric energy meter unit, a master controller unit, a communication interface unit and a display storage and operation interface unit. According to a gateway electric energy meter online replacing mode electric quantity loss compensation metering method, the system is environment-friendly in design, simple and reliable and friendly in human-computer interface so that accurate and reliable metering of important gateway electric energy meter online replacing mode electric quantity loss can be provided for onsite work personnel. Meanwhile, credibility of metering results is realized by adopting the 0.2S class gateway electric energy meter unit, and data storage inquiring can be performed so that the economic benefit of both power purchasing and selling sides can be guaranteed.

Description

technical field [0001] The invention belongs to the field of electric energy metering, and more specifically relates to an electric energy loss compensation metering system in an on-line replacement mode of a gate electric energy meter. Background technique [0002] According to DLT448-2000 "Technical Management Regulations for Electric Energy Metering Devices" on the operation and management of power metering devices at gates, the rotation cycle of power meters at gates in operation is stipulated as 3-4 years, and the renewal and transformation of power meters at gates beyond the rotation cycle can ensure Accuracy of energy metering. Under normal circumstances, in order not to affect the normal power production and operation, the renewal and transformation of the gate electric energy metering device is carried out in the form of online replacement, which involves the loss of electricity during the period of disassembly and assembly of the gate electric energy meter. Corres...

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Problems solved by technology

[0003] However, in the on-site gateway meter replacement, it was found that the current may change relatively large due to different loads during the meter replacement process, while the voltage change is small, and the power factor will also change at any time, so the instantaneous power before the meter replacement is used and the time required for meter replacement cannot faithfully reflect the loss of electricity in the process of meter replacement. Especially in the replacement of gateway meters on the power plant side, most of the people in charge of the power plant side do not agree with this calculation method, resulting in the failure of both parties to carry out the work smoothly.

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