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A power distribution network reliability evaluation method based on an equal dispersion sampling method and application

A distribution network and reliability technology, applied in the field of power grid, can solve problems such as taking a long time, and achieve the effects of saving calculation time, ensuring accuracy, and fast evaluation process

Pending Publication Date: 2019-06-14
SHANGHAI MUNICIPAL ELECTRIC POWER CO +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For a huge power distribution system, this method can effectively improve the calculation efficiency. If you want to obtain higher accuracy, since the calculation accuracy of the Monte Carlo method has a great relationship with the sampling times of the samples, you must perform a large number of calculations on the system. sampling, which must take a long time

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  • A power distribution network reliability evaluation method based on an equal dispersion sampling method and application
  • A power distribution network reliability evaluation method based on an equal dispersion sampling method and application
  • A power distribution network reliability evaluation method based on an equal dispersion sampling method and application

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Embodiment

[0059] In this embodiment, reliability evaluation is performed on the distribution network system of IEEE RBTS BUS6 main feeder 4, such as figure 1 As shown, the distribution network system includes 30 lines, 23 load points, 23 distribution transformers, 4 circuit breakers and a section switch; the line failure rate is 0.065 times / (a*km), and each section of line The repair time of the transformer is 5h; the failure rate of the transformer is 0.015 times / a, the repair time is 200h, and the operation time of the section switch is 1h. In this embodiment, the MATLAB platform is used to establish a distribution network model based on the above parameters, and based on the distribution network model, the Monte Carlo method of equidistributed sampling is used to obtain the reliability index of the distribution network system.

[0060] In this embodiment, the conventional sampling method and the equidistributed sampling method are compared for reliability evaluation. Under the same ...

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Abstract

The invention relates to a power distribution network reliability assessment method based on an equal dispersion sampling method and an application. The assessment method comprises the following stepsof 1) collecting the basic information of a power distribution network to be assessed; 2) constructing a power distribution network model of the power distribution network to be evaluated based on the basic information; and 3) carrying out simulation iteration based on the power distribution network model, and calculating by adopting an equal dispersion sampling method to obtain the final reliability index of the power distribution network to be evaluated. Compared with the prior art, the method has the advantages of greatly reducing the sampling frequency, saving the calculation time, beinghigh in reliability and the like.

Description

technical field [0001] The invention relates to the field of power grids, in particular to a distribution network reliability evaluation method and application based on an equidistributed sampling method. Background technique [0002] Power system reliability is a measurement of the ability of the power system to supply power and energy to power users without interruption according to acceptable quality standards and required quantities. According to incomplete statistics, the above-mentioned user power failures are caused by power distribution system failures. Therefore, it is of great significance to evaluate the reliability of distribution network. [0003] There are two types of methods for distribution network reliability assessment: analytical method and Monte Carlo simulation method. The analytical method adopts the method of fault enumeration to select the state and obtain the average index. When the power distribution system is complex, the amount of calculation inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/06G06Q10/06
Inventor 刘俊杨帆陆冰冰任丽佳
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO