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Reliability detecting and evaluating method of power distribution system on basis of cloud model

A technology of power distribution system and evaluation method, applied in the field of electric power engineering, can solve problems such as deviation

Inactive Publication Date: 2015-02-18
海南电网有限责任公司 +1
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  • Abstract
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Problems solved by technology

Based on this, it is necessary to provide a distribution system reliability evaluation method that can better reflect the true reliability level of the system in view of the problem that the above-mentioned traditional distribution system reliability evaluation results have a large deviation from the actual situation.

Method used

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  • Reliability detecting and evaluating method of power distribution system on basis of cloud model
  • Reliability detecting and evaluating method of power distribution system on basis of cloud model
  • Reliability detecting and evaluating method of power distribution system on basis of cloud model

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Embodiment 1

[0050]In this embodiment, the reliability evaluation of the RBTS-BUS6 standard test system is carried out by using the evaluation method described in the present invention. The RBTS-BUS6 standard test system includes 23 load points, and each load point is used as a user, and the switchgear (circuit breaker, disconnector, fuse) in the system is set to be fault-free, that is, the switchgear operates reliably; the main power supply is completely Reliable operation; at the same time, no load equipment failure is considered, that is, the load node failure rate is zero. The wiring diagram of the RBTS-BUS6 standard test system is attached to the manual figure 2 As shown, the line length parameters of the RBTS-BUS6 standard test system are shown in Table 1.

[0051] Table 1 RBTS-BUS6 standard test system line length parameters

[0052]

[0053]

[0054] A cloud model-based distribution system reliability evaluation method, the specific steps are as follows:

[0055] 1. Colle...

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Abstract

The invention provides a reliability detecting and evaluating method of a power distribution system on the basis of a cloud model. The reliability detecting and evaluating method includes steps of searching line fault rate of a power distribution system to be detected and evaluated and historic statistics data of the fault rate of transformers; processing in standardization; calculating the cloud model digital characteristics of the line fault rate and the fault rate of the transformers by means of a backward cloud generator; calculating cloud droplets of the line fault rate and the fault rate of the transformers by means of a forward cloud generator; processing in inverse standardization; calculating reliability of the power distribution system by the feeder line partitioning algorithm to obtain values SAIFI, SAIDI and ASAI of the reliability of the power distribution system; drawing the values into diagrams and analyzing the reliability of the power distribution system to be detected and evaluated according to the diagrams. By the reliability detecting and evaluating method, qualitative laws of the parameters can be obtained, and the reliability of the power distribution system can be quantitatively detected and evaluated. In addition, the reliability detecting and evaluating method is good in universality and applicable to reliability detection and evaluation of the complicated power distribution system.

Description

technical field [0001] The invention relates to a method for evaluating the reliability of a distribution network part of a power system, in particular to a method for evaluating the reliability of a power distribution system based on a cloud model, and belongs to the technical field of electric power engineering. Background technique [0002] With the continuous development of social economy, electricity occupies an increasingly important position in people's production and life. Large-scale power outages can not only cause huge economic losses, but also endanger social stability. Quantitative evaluation of power system reliability has been paid attention to. [0003] In the prior art, methods for reliability assessment of power distribution systems are divided into two categories: simulation methods and analytical methods. The analysis method is mainly the fault enumeration method. When the scale is small, the fault enumeration method is better; when the system scale is l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/06
CPCG06Q10/0635G06Q50/06
Inventor 林盾陈碧云潘艳敏刘伟陈绍南赵波
Owner 海南电网有限责任公司
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