Electric quantity compensation processing method and device for electric energy meter during on-line replacement

Abstract

The embodiment of the invention discloses an electric quantity compensation processing method for an electric energy meter during on-line replacement. The electric quantity compensation processing method comprises the following steps of acquiring an active power discrete point of a load within time required for replacement of the electric energy meter; acquiring a power curve function by a third-order spline interpolation method according to the active power discrete point; building an integral function of the power curve function and replacement time; and calculating to obtain total active power electric quantity of the load according to the integral function. An electric quantity compensation processing device for the electric energy meter during on-line replacement comprises a three-phase electric energy meter site calibration device and an electric quantity compensation processor which are electrically connected, wherein the three-phase electric energy meter site calibration device is used for acquiring instantaneous active power of the load, and the electric quantity compensation processor is used for calculating the power curve function, the integral function and the total active power electric quantity of the load and displaying the total active power electric quantity of the load. With the method and the device provided by the embodiment by the invention, the precision of electric quantity calculation during the on-line replacement process of the electric energy meter is improved.

Description

technical field [0001] The invention relates to the technical field of electric energy metering, in particular to an electric energy compensation processing method and device for on-line replacement of electric energy meters. Background technique [0002] In general, when the gateway electric energy meter is replaced online, it is necessary to compensate for the loss of electricity during the meter replacement process, so as to ensure the economic interests of the operating unit. However, in actual work, especially in the online replacement of small hydropower stations and large user gateways with off-grid nonlinear loads, due to the relatively large fluctuations in power generation, the active power value recorded at the beginning of the meter replacement cannot represent the entire meter replacement. The actual power value in the process, resulting in relatively large power measurement error. [0003] In the on-line replacement of gateway electric energy meters in small h...

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Problems solved by technology

[0004] In the embodiment of the present invention, a method and device for processing power compensation for online replacement of electric energy meters are provided to solve the problem of low power metering accuracy in the prior art during the online replacement of electric energy meters

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