Power distribution system reliability assessment method considering distributed power supply

A distributed power supply and power distribution system technology, applied in the direction of electrical digital data processing, CAD circuit design, instruments, etc., can solve the problems of long time consumption, inaccurate calculation results, difficulty in reflecting load fluctuations, etc., and achieve accurate results Effect

Active Publication Date: 2017-01-25
HUAZHONG UNIV OF SCI & TECH +1
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Problems solved by technology

[0005] Aiming at the defects of the prior art, the purpose of the present invention is to provide a distribution system reliability evaluation method considering distributed power, which aims to so

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  • Power distribution system reliability assessment method considering distributed power supply
  • Power distribution system reliability assessment method considering distributed power supply
  • Power distribution system reliability assessment method considering distributed power supply

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[0039] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0040] A method for evaluating the reliability of a power distribution system based on an analytical method considering distributed power sources provided by the present invention includes the steps of:

[0041] I. Establish a probability model of distributed power output power;

[0042] II. Establish a dynamic model of load time series;

[0043] III. Calculate the probability of successful operation of the island based on the output power probability model of the distributed power supply in the island and the load sequence dynamic model;

[0044] IV. For the load points in the isolated ...

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Abstract

The invention discloses a power distribution system reliability assessment method considering a distributed power supply. The power distribution system reliability assessment method is characterized by comprising the following steps: S1, establishing an output power probability model of the distributed power supply; S2, establishing a load time-sequence dynamic model; S3, calculating the successful operation probability of an island based on the output power probability model of the distributed power supply and the load time-sequence dynamic model in the island; S4, for load points in the island, acquiring the reliability index of second-class load points according to the successful operation probability of the island and a minimum path method after improvement; and S5, acquiring the reliability index of first-class load points, acquiring system reliability index according to the reliability index of the first-class load points and the reliability index of the second-class load points, and carrying out assessment on power distribution system reliability according to the system reliability index. According to the power distribution system reliability assessment method, the actual power output level and load dynamic characteristics of the distributed power supply can be reflected, and the island operation manner of a power distribution system is sufficiently considered, so that the actual operation condition of a power grid is met, and the method is suitable for the power distribution system reliability assessment containing the distributed power supply.

Description

technical field [0001] The invention relates to the field of power distribution system reliability assessment, and more particularly, to a power distribution system reliability assessment method considering distributed power sources. Background technique [0002] The power distribution system is located at the end of the entire power system and is directly connected to the users. It is an important link that affects the reliability of the power supply of the power grid. Statistics show that most power outages are caused by faults on the distribution network side. Therefore, the reliability assessment of the power distribution system has always been have received extensive attention. [0003] In recent years, Distributed Generation (DG) has been increasingly integrated into the power distribution system due to its high efficiency, flexibility and environmental friendliness. The power distribution system has changed from a single power source radiation network to multiple powe...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20G06F2117/06
Inventor 游大海张峰王红斌龙呈陈国炎刘俊翔梅桢代力
Owner HUAZHONG UNIV OF SCI & TECH
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