Operation-maintenance risk evaluation method for distributed new energy accessing power distribution network

A distributed new energy and risk assessment technology, which is applied in the field of risk assessment of operation inspection of distributed new energy connected to the distribution network, can solve the problems of high occurrence probability, serious harm and strong uncertainty.

Inactive Publication Date: 2018-10-19
STATE GRID XINJIANG ELECTRIC POWER CO URUMQI ELECTRIC POWER SUPPLY CO +2
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  • Application Information

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Problems solved by technology

Compared with the conventional distribution network, the risk in the operation and inspection process of the active distribution network u...

Method used

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  • Operation-maintenance risk evaluation method for distributed new energy accessing power distribution network
  • Operation-maintenance risk evaluation method for distributed new energy accessing power distribution network
  • Operation-maintenance risk evaluation method for distributed new energy accessing power distribution network

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Experimental program
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Embodiment

[0028] Embodiment: (1) The operation and inspection risk of the distribution network can be divided into the reliable operation risk of the distribution network, The safety risks of equipment and the personal safety risks of inspection personnel can be divided into three categories, and then each category can be subdivided. Hierarchical risk structure and content such as figure 2 shown.

[0029] The risks in the distribution network reflect different properties on different time scales, so it is necessary to determine the time range for risk identification. This patent uses a dynamic identification method to calculate and provide the probability of occurrence of risks faced by the power distribution system and the severity of the consequences for each period of time, and can provide real-time information to the personnel on duty. The length of time period considered in this patent is 1h, that is, the probability of risk occurrence within an hour is calculated.

[0030] (2)...

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Abstract

The invention discloses an operation-maintenance risk evaluation method for a distributed new energy accessing power distribution network. The method includes building a hierarchical risk evaluation system; establishing a factor set and a remark set of an evaluation object; calculating the occurrence probability and severity of subdivision risk of each aspect obtained by resolving each project; performing integration evaluation to obtain an evaluation index; building a fuzzy evaluation matrix at all levels based on fuzzy integration evaluation to evaluate the real-time risk level of a power distribution network; determining each subdivision risk weight through methods like objective entropy weight; and obtaining a final evaluation result through fuzzy operators and evaluation index processing. The method can calculate a risk evaluation model of a distributed new energy scale accessing distribution network, so that good adaptation on novel active power distribution network characteristics can be achieved, and detailed information of all risks can be reflected.

Description

technical field [0001] The invention relates to a risk assessment method for operation inspection of distributed new energy scale access to distribution network, a risk assessment model of distributed new energy scale access to distribution network that can be calculated in real time, and better adapts to new active distribution networks The characteristics can reflect the detailed information of each risk. Background technique [0002] At present, the research on risk assessment of power system has achieved certain results in the basic concept and importance of risk assessment, risk assessment model and calculation method, risk assessment index system and so on. Research on risk assessment of distribution systems lags behind that of transmission networks. Compared with the conventional distribution network, the risk in the operation and inspection process of the active distribution network under the access of large-scale distributed new energy is stronger, the probability ...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0635G06Q50/06Y04S10/50
Inventor 黄震周建邦刘彪傅强顾军吴琳李冰黄擎赵景涛杨春梅赵仰东
Owner STATE GRID XINJIANG ELECTRIC POWER CO URUMQI ELECTRIC POWER SUPPLY CO
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