Method for estimating operation risks of unit-system power distribution network

A technology for risk assessment and power grid operation, applied to electrical components, circuit devices, AC network circuits, etc., can solve the problems of lack of reliability assessment and early warning methods for unit system distribution network models, so as to improve power supply reliability and reduce hazards Effect

Active Publication Date: 2018-10-23
NARI TECH CO LTD +4
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Problems solved by technology

[0005] The risk assessment of traditional distribution automation only usually takes the feeder as a unit to model the entire network, and then conducts n

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  • Method for estimating operation risks of unit-system power distribution network
  • Method for estimating operation risks of unit-system power distribution network
  • Method for estimating operation risks of unit-system power distribution network

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[0038] The technical scheme of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

[0039] Attached below figure 1 The present invention is further described.

[0040] Such as figure 1 As shown, a unit system distribution network operation risk assessment method includes the following steps:

[0041] Step 1. Taking the power supply unit as the smallest logical analysis unit, obtain the unit-based distribution network model and its operation mode;

[0042] Each power supply grid itself is a relatively independent power supply area, which generally has little contact with other power supply grids, but there are contact switches between feeders in each power supply grid. Obtain the minimum analysis element and the minimum analy...

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Abstract

The invention relates to a method for estimating the operation risks of a unit-system power distribution network, and belongs to the technical field of power system intelligent analysis and control. The method comprises the steps: dividing a power distribution network structure into a plurality of units according to the unit-system power distribution network planning and reconstruction which is strongly promoted currently, taking a power supply unit as the minimum logic analysis unit for the analysis of the operation risks of the unit-system power distribution network, and obtaining a model and an operation mode for a power distribution network in a power supply logic unit; quantitatively estimating the occurrence probability and severity of each risk factor based on a risk matrix, and constructing an operation risk estimation index system of the unit-system power distribution network; and finally carrying out the risk rating of the calculated grid risk estimation indexes after the analysis of the power distribution network risks of each logic unit. According to the invention, the method facilitates the automatic recognition of weak links of a power distribution network in a unit grid, can achieve the advanced prevention of the bigger risk items, reduces the damages to the unit-system power distribution network, and improves the power supply reliability for a user.

Description

technical field [0001] The invention belongs to the technical field of power system intelligent analysis and control, in particular to an operation risk assessment method of a unit system distribution network. Background technique [0002] As the scale of urban construction continues to expand, the scale of urban distribution networks continues to increase. How to effectively and clearly manage the operation, maintenance, and troubleshooting of distribution networks cannot be simply classified as management problems or technical problems. combined. The grid-based unit planning refers to dividing the medium-voltage distribution network into several power supply units reasonably according to the block based on the power demand of the plot, and carrying out the distribution network planning with the unit as the unit, forming "one grid, one plan" . Through planning, each power supply unit forms a relatively independent line grid connection structure, independently undertakes t...

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Application Information

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IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 赵家庆苏大威吴婧妤吕洋霍雪松闪鑫田江王波丁宏恩吴爽吴博文冯秋侠
Owner NARI TECH CO LTD
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