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Power utilization quality comprehensive evaluation method for power demand side

A power demand side, comprehensive evaluation technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of uncertainty in evaluation results, and achieve the effect of objective and reasonable evaluation results

Inactive Publication Date: 2013-09-25
JIANGSU UNIV
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Problems solved by technology

This method also has different degrees of human subjective factors, and the evaluation results have certain uncertainties.

Method used

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  • Power utilization quality comprehensive evaluation method for power demand side
  • Power utilization quality comprehensive evaluation method for power demand side
  • Power utilization quality comprehensive evaluation method for power demand side

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Embodiment Construction

[0023] Please refer to Figure 1, which is a structure diagram of the present invention for the comprehensive evaluation system of power quality on the power demand side. As shown in the figure, the present invention includes a power demand side distribution network, and the monitoring of electric energy parameters installed at several monitoring points instrument, a GPRS network for transmitting the monitoring data of the electric energy parameter monitoring instrument, a database server for storing power quality index data, and a monitoring and evaluation center for evaluation and calculation.

[0024] Among them, the power parameter monitor mainly detects the power quality index data of each monitoring point of the power demand side distribution network, including: voltage deviation, voltage fluctuation, three-phase imbalance, frequency deviation, harmonic content, power outage time, etc.;

[0025] Wherein, the monitoring and evaluation center completes the entire calculation...

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Abstract

The invention discloses a power utilization quality comprehensive evaluation method for a power demand side. The power utilization quality comprehensive evaluation method comprises a first step of finishing data collection and transmission of power distribution network monitoring points of the power demand side; a second step of establishing power quality grades for power quality indexes, and performing unitization processing on the established grades according to benefit type indexes and cost type indexes; a third step of utilizing a Bayes method to correct the indexes on the basis of obtaining of subjective weights, and obtaining weight optimization values of various indexes through an optimization algorithm with constraints; a fourth step of performing grading evaluation on various power indexes of the monitoring points by means of an attribute recognition model; and a fifth step of obtaining comprehensive evaluation grades of power quality by calculation according to the weight optimization values, and finishing quantitative evaluation on the power quality. Reasonable calculation of the weights of various indexes of power is achieved through the power utilization quality comprehensive evaluation method, reasonability and reliability of power comprehensive evaluation results are improved, and reliable information can be provided for power grid safety.

Description

technical field [0001] The invention relates to a method for comprehensively evaluating power quality at the power demand side, in particular to a method for comprehensively evaluating electric energy based on a Bayesian and attribute recognition model, and belongs to the field of electrical engineering. Background technique [0002] Electric energy is an indispensable energy source in today's society, and its quality is related to the safe operation of the power grid and the power consumption level of users on the power demand side. The ideal power quality is a perfect sine wave, but due to various complex factors in the power grid, the power quality is deviated, and power quality problems arise. [0003] The power quality assessment is based on the relevant parameters of the power, and according to a certain evaluation method, the quality level of the power is given for the power department and users to check. The traditional power quality assessment mainly focuses on the...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 潘天红张乙
Owner JIANGSU UNIV
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