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Power distribution system reliability evaluation method and device

A power distribution system and reliability technology, applied in the direction of circuit devices, electrical components, AC network circuits, etc., can solve the problems that are difficult to apply to the reliability evaluation of complex power distribution systems, and achieve the effect of improving efficiency and reducing the amount of calculation

Inactive Publication Date: 2018-02-13
ZHAOTONG POWER SUPPLYING BUREAU OF YUNNAN POWER GRID
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem that the analytical method is difficult to apply to the reliability evaluation of complex power distribution systems, the embodiment of the present invention provides a method and device for reliability evaluation of power distribution systems

Method used

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  • Power distribution system reliability evaluation method and device
  • Power distribution system reliability evaluation method and device
  • Power distribution system reliability evaluation method and device

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Embodiment 1

[0049] The embodiment of the present invention provides a method for evaluating the reliability of a power distribution system, see figure 1 , the method can include:

[0050] Step S11, taking the switchgear in the power distribution system as the boundary element, using the breadth traversal algorithm, dividing the components in the power distribution system into multiple component blocks, wherein the switchgear may include: circuit breakers, disconnectors, tie switches At least one of the components may include: a line (also known as a feeder) or a transformer.

[0051] In this embodiment, the power distribution system is divided with the switchgear as the boundary condition to form multiple component blocks, which can reduce the repeated traversal of each individual component in subsequent calculations, thereby reducing calculation steps and improving calculation efficiency .

[0052] Step S12, according to the distance from the main power source in the power distribution...

Embodiment 2

[0107] An embodiment of the present invention provides a power distribution system reliability evaluation device, which implements the method described in Embodiment 1, see Figure 4 , the device may include: a segmentation module 201 , a setting module 202 , a processing module 203 , a judgment module 204 , and a calculation module 205 .

[0108] The segmentation module 201 is used to divide the components in the power distribution system into a plurality of component blocks by using the breadth traversal algorithm with the switchgear in the power distribution system as the boundary element. The switchgear includes: circuit breakers, isolating switches, tie switches At least one of the components includes: a line or a transformer.

[0109] In this embodiment, the power distribution system is divided with the switchgear as the boundary condition to form multiple component blocks, which can reduce the repeated traversal of each individual component in subsequent calculations, t...

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Abstract

The invention discloses a power distribution system reliability evaluation method and device. The method comprises the steps that a switching device in a power distribution system is adopted as a boundary element, a breadth traversal algorithm is adopted, components in the power distribution system are divided into a plurality of component blocks; according to the distance with a main power sourcein the power distribution system, on the basis of the rule from near to far, the switching device is subjected to levelarrangement, and the component blocks are concluded into levelsadjacent to the high-level switching device; supposing that a certain component block breaks down, the high-level switching device achieving the protecting effect on the fault component block is disconnected in sequence; according to the connecting relation between the main power source or backup power source in the power distribution network and loads connected with the component blocks, the influence of the fault component on the reliability of each load is judged; the influences of all the component block faults on the reliability of each load are counted, and the reliability index of the power distributionsystem is worked out. The method can avoid repeated traversal of all the components, and therefore the calculation efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of distribution network reliability evaluation, in particular to a distribution system reliability evaluation method and device. Background technique [0002] Power system reliability is a routine work necessary for power system planning and operation. As a link between the power generation and transmission system and users, the power distribution system reflects the ability of the power system to continuously supply power to users, and its reliability embodies the structure and operating characteristics of the entire power system. [0003] The existing methods for evaluating the reliability of power distribution systems are mainly divided into two categories: analytical method and Monte Carlo simulation method. Since the calculation accuracy of the Monte Carlo simulation method is proportional to the calculation time, it takes a long time to meet the high precision requirements. Simulation time, therefore,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06H02J3/00
CPCG06Q10/0639G06Q50/06H02J3/00H02J2203/20
Inventor 蔡伟沈龙徐云水余荣强何兴平杨清曾寒烨张赟李潞曹元
Owner ZHAOTONG POWER SUPPLYING BUREAU OF YUNNAN POWER GRID
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