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Reliability algorithm for power distribution system

A power distribution system and reliability technology, applied in computing, instrumentation, data processing applications, etc., can solve problems such as the inability to guarantee the uniqueness of results and the difficulty of adapting to the requirements of grid planning scheme optimization.

Active Publication Date: 2015-05-20
STATE GRID SHANDONG ELECTRIC POWER COMPANY RIZHAOPOWER SUPPLY +1
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Problems solved by technology

Limited by the characteristics of random sampling, the simulation method cannot guarantee the uniqueness of the results, and it is difficult to meet the requirements of power grid planning scheme optimization

Method used

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  • Reliability algorithm for power distribution system
  • Reliability algorithm for power distribution system
  • Reliability algorithm for power distribution system

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Embodiment Construction

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in combination with the embodiments of the present invention and the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0039] see figure 1 , in the embodiment of the present invention, the power distribution system reliability algorithm includes the following steps:

[0040] In the first step, assuming that all substations are completely shut down, the power supply range of the distributed power supply is obtained through calculation, that is, the probability that each load point is powered by the distributed power supply alone;

[0041] The second step is to...

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Abstract

The invention discloses a reliability algorithm for a power distribution system. The reliability algorithm comprises the following steps of 1, assuming that all substations are stopped, and calculating to obtain the probability of each load point which is singly supplied with power by a distributed power source; 2, searching a normal minimum path set, marking the minimum path set as a conventional minimum path set and a standby minimum path set to distinguish the substation and the distributed power source, and adding the attribute of the effective probability for the standby minimum path set; 3, using the conventional minimum path set to generate a minimum cut set, and calculating the reliability parameter of each minimum cut set; 4, according to the standby minimum path set, correcting the reliability parameter of each minimum cut set; 5, calculating the reliability index of the load point; 6, calculating the system reliability index. The reliability algorithm has the advantage that the minimum path set and minimum cut set improving algorithm is adopted, and the conditions of planned maintenance and switch switching time are comprehensively considered, so at the premise of guaranteeing the requirement of the reliability calculation of the power distribution system, the calculation time is greatly saved.

Description

technical field [0001] The invention relates to the field of power system evaluation, in particular to a distribution system reliability algorithm. Background technique [0002] The power distribution system is a link in the power system that directly targets users, and has the most direct impact on the quality and reliability of power supply for users. According to statistics, about 80% of power outages are caused by power distribution system failures. It can be seen that the reliability of distribution system occupies a very important position in the reliability of power system. With the continuous expansion of the scale of China's power distribution network, how to quickly and efficiently evaluate the reliability of the network has become a research hotspot. [0003] Reliability evaluation is based on the reliability parameters of system components to calculate the reliability index. The evaluation algorithm generally includes four steps: establish a component state mo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/06
CPCG06Q50/06
Inventor 孙兴华房克峰马经纬陈淼王贵宾王晓梅马文华刘梅赵燃张树永李海坤
Owner STATE GRID SHANDONG ELECTRIC POWER COMPANY RIZHAOPOWER SUPPLY
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