A monthly power factor prediction method and system

Abstract

The invention relates to the technical field of power system analysis, and particularly discloses a method for predicting a power factor electricity charge. The method comprises the following steps: 1) accessing an acquisition terminal to an electric charge metering point of a tested power supply circuit of a power user, so that the acquisition terminal is in a wireless communication connection with a background server; and 2) setting an acquisition period T1 of the acquisition terminal for the occurred active electric quantity EP1 and the occurred reactive electric quantity EQ1; inputting anelectricity utilization law f(x,y) of the power user, setting a prediction period T2 and a power factor checking criterion A by the background server and other steps. The invention further discloses asystem for predicting the power factor electricity charge which comprises a background server, at least one acquisition terminal, and at least one mobile terminal. According to the method and the system for predicting the power factor electricity charge, the power user can know the power factor value in advance by predicting the power factor and the power factor electricity charge, thereby timelyavoiding unnecessary power factor electricity charge penalties generated by unqualified power factor in the production and electricity utilization process, and reducing unnecessary power consumptioncost.

Description

technical field [0001] The invention relates to the technical field of power system analysis, in particular to a monthly power factor prediction method and system. Background technique [0002] According to the provisions of the "Power Factor Adjustment Electricity Fee Measures" (Shuidian Caizi No. 215 Document) issued by the Ministry of Water Resources and Electric Power and the State Price Bureau and the current national electricity price system, for users who have power factor assessment (also called power rate adjustment coefficient assessment), monthly There are corresponding assessment standards for the power factor value (also called the monthly force rate coefficient). If the user's monthly power factor does not meet the standard, the user needs to be charged "power adjustment electricity fee" (that is, the power factor adjustment electricity fee, commonly known as "reactive power penalty, force adjustment penalty"). Corresponding "strength adjustment electricity fe...

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Problems solved by technology

[0003] According to the statistics of existing electricity consumption data, it is common for power users to fail to meet the monthly power factor. The technology of power factor problems is relatively professional, and the relevant science popularization is insufficient. Power users, especially non-electrical related personnel, do not know much about how to supervise power factor become a problem

The monthly power factor is not up to standard or far below the assessment standard, which will bring the following problems: (1) increase the burden and loss of the power grid; (2) once there is a fine for "strength adjustment electricity fee", the amount of additional revenue is generally large; (3) Since the monthly power factor value is calculated and provided by the power supply department after the end of an electricity billing cycle (usually one month), so whether it is qualified or not, whether it is rewarded or punished is not known until one electricity billing cycle is behind. , and it is already an established fact when it is known; (4) Usually, power users feel that such large fines have occurred without knowing it, and they often have an incomprehensible mentality, which is likely to cause complaints and disputes with the power supply department

This kind of repetitive and boring power distribution management work without predictability consumes manpower and material resources, and has certain requirements for the management personnel's work discipline, technical literacy, and transcription timeliness, and it is not a fundamental solution to the problem.

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