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Method for evaluating reliability of information transmission of active power distribution network by considering secondary equipment influence

A technology of active distribution network and information transmission, which is applied in the field of reliability evaluation of information transmission of active distribution network

Active Publication Date: 2015-08-19
STATE GRID CORP OF CHINA +2
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Problems solved by technology

Considering the impact of secondary equipment, the reliability evaluation model and algorithm of the traditional distribution network have been changed, making the reliability evaluation algorithm of the traditional distribution network no longer applicable

Method used

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  • Method for evaluating reliability of information transmission of active power distribution network by considering secondary equipment influence
  • Method for evaluating reliability of information transmission of active power distribution network by considering secondary equipment influence
  • Method for evaluating reliability of information transmission of active power distribution network by considering secondary equipment influence

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Embodiment Construction

[0051] The method for evaluating the reliability of active distribution network information transmission considering the influence of secondary equipment proposed by the present invention includes the following steps:

[0052] (1) The secondary equipment in the active distribution network can be divided into terminal acquisition equipment, information transmission system and control master station according to their functions. The information transmission system includes information transmission equipment and information transmission channels. The active distribution network is calculated by the following formula The availability rate Q of the control master station in the power grid is:

[0053] Q = μ η + μ

[0054] Among them, μ is the recovery rate of the control master station in the active distribution network, obtained from the operation history database of the ...

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Abstract

The invention relates to a method for evaluating the reliability of information transmission of an active power distribution network by considering secondary equipment influence, and belongs to the technical field of the reliability evaluation of a power distribution network. The invention provides an analysis and calculation method for evaluating the reliability of the active power distribution network by considering the secondary equipment influence. The method comprises the following steps of acquiring a fault rate and a repair rate of a terminal acquisition device, an information transmission system and a control main station on the basis of the engineering practice of the active power distribution network, and obtaining the correct transmission probability of the information in the active power distribution network between the terminal acquisition device and the control main station; establishing an area connection matrix and a fault judging matrix, and classifying load points on the basis of the area connection matrix and the fault judging matrix; and finally evaluating the influence of a primary equipment fault in each area on the reliability of each load point, thereby obtaining the fault rate of the load point as well as the reliability index of annual power failure time. The calculation process is clear in physical concept, and the influence of secondary equipment on the reliability of the active power distribution network can be effectively and quantitatively evaluated.

Description

technical field [0001] The invention relates to a reliability evaluation method for information transmission of an active distribution network considering the influence of secondary equipment, and belongs to the technical field of distribution network reliability evaluation. Background technique [0002] An important symbol of the development of active distribution network is to realize the "intelligent self-healing" function after a fault, so as to improve the reliability of users. In the development process of active distribution network, it has become an important research topic to consider the impact of automation system, that is, the impact of secondary equipment failure on user reliability. The secondary equipment in the active distribution network can be divided into three types according to their functions: terminal collection equipment, information transmission system and control master station. Through the remote control of the control master station, the circuit b...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06
Inventor 吴文传陈璨郭昆亚张伯明孙宏斌王英男黄哲洙金鹏郭庆来
Owner STATE GRID CORP OF CHINA
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