Method for assessing risk and reliability of power distribution network

A distribution network and reliability technology, applied in the field of distribution network, can solve problems such as inaccurate risk assessment results, inability to adjust the system in time, and misjudgment of vital components.

Inactive Publication Date: 2015-06-17
STATE GRID CORP OF CHINA +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are many reasons for component outages. The existing technology mainly builds component outage models based on certain outage factors; when the topology of the distribution network chang...

Method used

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  • Method for assessing risk and reliability of power distribution network
  • Method for assessing risk and reliability of power distribution network
  • Method for assessing risk and reliability of power distribution network

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Experimental program
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Embodiment Construction

[0053] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0054] Such as figure 1 as shown,

[0055] (1) First obtain the model and measurement of the whole network from the platform, including the transmission network and distribution network. If it is automatically calculated in real time, it will not enter the research state. If it is manually started, it will automatically enter the research state, that is, to study Data can be calculated, which can be read into maintenance, modify the load and change some operating modes;

[0056] (2) For the components to be studied in the whole network, carry out the probability calculation under the current environment, and give the probability value;

[0057] (3) Conduct static security analysis of the current model, and give out-of-limit equipment and power-off equipment;

[0058] (4) For off-limit equipment, it is converted to load shedding ac...

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Abstract

The invention relates to a method for assessing the risk and the reliability of a power distribution network. The method includes the following steps: obtaining a model and measurement data of the power distribution network; obtaining a model and measurement data of a power transmission network; carrying out probability calculation on elements, and determining a probability value; carrying out static safety analysis, and giving an out-of-limiting device and a power-off device; carrying out conversion to obtain the load shedding amount for the out-of-limiting device according to the sensitivity; carrying out power-off risk calculation and reliability index calculation; when calculation data are research data, comparing the research data calculation result with a latest real-time data calculation result, and giving an alarm when the risk of the research calculation result is larger than that of the real-time calculation result. The method has the advantages that by means of the technical scheme, calculation of the research data is increased, when overhauling information, load information and running states are changed, the outage risk is compared, and the assessment accuracy and the decision making accuracy are improved.

Description

technical field [0001] The invention relates to the field of distribution networks, in particular to a risk and reliability assessment method for a distribution network. Background technique [0002] The distribution network contains a large number of power components, and the change in the reliability of any component will affect the reliability of the entire distribution network. The root cause of the failure of the distribution network is the outage of these components. The premise of risk and reliability assessment is to determine the outage model of the component. There are many reasons for component outages. The existing technology mainly builds component outage models based on certain outage factors; when the topology of the distribution network changes, the system cannot be adjusted in time, causing errors in the outage of some components. judgments, resulting in inaccurate risk assessment results and affecting the correctness of decision-making. Contents of the i...

Claims

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Application Information

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IPC IPC(8): G06Q50/06
CPCG06Q50/06
Inventor 黄道姗杨桂钟黄霆査显煜赵明黄曲粲刘韶峰张恒吴峰汲广军
Owner STATE GRID CORP OF CHINA
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