Electricity replenishment method based on load curve

Abstract

The invention discloses an electric power retrieving method based on a load curve. The electric power retrieving method based on the load curve comprises the steps that historical data of an electric energy meter are obtained, and a current loss characteristic coefficient, a current loss ratio alarm limit value, a voltage loss ratio alarm limit value and a voltage loss characteristic value are obtained; the maximum value of current of seven days and the maximum value of electric power of seven days are calculated; a current loss characteristic value is calculated; the number of days in which a daily average current value is less than the current loss characteristic value and the number of hours in which a load curve voltage value is less than the voltage loss characteristic value are calculated; the current loss ratio and the voltage loss ratio of the electric energy meter are calculated; the minimum value of average electric power of a fault free period is calculated; total fault time and total residual electric power are calculated; and electric power required to be retrieved is calculated. Electric power retrieving can be automatically performed under the condition of voltage loss and current loss of the electric energy meter without influence of the present power consumption state of the electric energy meter so that the electric power retrieving method based on the load curve is suitable for the electric energy meters of various types of electric energy loads and various types of metering modes, wide in range of application, automatic in the whole course, accurate in calculation and high in calculation speed and is realized by using computers completely.

Description

technical field [0001] The invention specifically relates to a method for supplementing electric quantity based on a load curve. Background technique [0002] With the development of national economy and technology and the improvement of people's living standards, electric energy has become one of the most important energy sources in people's production and life. Electric energy consumption is the most important basis for the electric power system to charge electric energy users. Therefore, whether for the power system or the user, the accuracy of electric energy measurement is absolutely important. [0003] When the power system personnel check the power consumption of the power users, it is found that the power meter is faulty or other reasons cause the power to be low, and the power will be replenished. The general procedure is to first confirm the technical reasons that cause the energy meter to measure less electricity, such as the loss of voltage and current of the e...

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Problems solved by technology

[0004] The rated voltage method is more effective when the energy meter loses voltage and the current is normal. Since the voltage fluctuation is generally small when the user uses electricity normally, it is more accurate to use the rated voltage for theoretical calculation, but it is more accurate for the electricity meter loss. There is no good solution, because users usually have peak periods of electricity consumption, such as factories on weekends, day shifts and evening shifts, and the power load varies greatly, so there is no way to perform simulation calculations

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