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Comprehensive evaluation method for electric energy quality treatment scheme

A power quality and comprehensive evaluation technology, applied in technical management, data processing applications, instruments, etc., can solve problems such as the influence of end power users, product quality decline, and production process interruption

Inactive Publication Date: 2018-05-08
CHINA ELECTRIC POWER RES INST +4
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Problems solved by technology

[0002] In modern power systems, nonlinear, impact, fluctuation and asymmetrical loads have increased significantly, and various power electronic devices have been widely used, resulting in increasingly serious power quality problems such as voltage dips, fluctuations and flicker, and harmonics. , have a great impact on the end users of electricity, such as product quality decline or even production process interruption, resulting in huge economic losses

Method used

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  • Comprehensive evaluation method for electric energy quality treatment scheme
  • Comprehensive evaluation method for electric energy quality treatment scheme
  • Comprehensive evaluation method for electric energy quality treatment scheme

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Embodiment Construction

[0052] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0053] The invention provides a method for comprehensive evaluation of a power quality control scheme, the method comprising the following steps:

[0054] Step 1: Establish a comprehensive evaluation index system for power quality control schemes, which includes: technical evaluation indicators for power quality control schemes, economic evaluation indicators for power quality control schemes, and adaptability assessment indicators for power quality control schemes;

[0055] The technical evaluation indicators of the power quality control scheme include: harmonic distortion rate, voltage deviation, three-phase unbalance degree, voltage fluctuation, line loss rate;

[0056] The economic evaluation indicators of the power quality control scheme include: equipment cost, annual operation and maintenance cost;

[0057] The adaptability evaluation indicators of th...

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Abstract

The invention discloses a comprehensive evaluation method for an electric energy quality treatment scheme. The method includes establishing an electric quality treatment scheme comprehensive evaluation index system, performing comprehensive granting on evaluation indexes through combination of an analytic hierarchy process having high subjectivity and a entropy weight analysis method having high objectivity, and performing scientific evaluation on a to-be-evaluated system through a gray correlation method. The invention provides the comprehensive evaluation method for the electric energy quality treatment scheme and can effective evaluate the comprehensive energy efficiency level of the electric energy quality treatment scheme.

Description

technical field [0001] The invention relates to a comprehensive evaluation method of a power quality control scheme, which belongs to the field of power supply and utilization management of distribution networks. Background technique [0002] In modern power systems, nonlinear, impact, fluctuation and asymmetrical loads have increased significantly, and various power electronic devices have been widely used, resulting in increasingly serious power quality problems such as voltage dips, fluctuations and flicker, and harmonics. , have a great impact on the terminal power users, such as product quality decline or even production process interruption, resulting in huge economic losses. [0003] Nowadays, users have higher and higher requirements for power quality, and the only way to improve the existing problems is to carry out power quality control. The main goals are: [0004] (1) Reduce the impact of pollution source access on the power grid and improve the power quality in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCY02P90/82G06Q10/06395G06Q50/06
Inventor 蒋利民闫华光孟珺遐尹忠东张碧涵冯寅
Owner CHINA ELECTRIC POWER RES INST
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