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A method for evaluating the safety risk status of transmission lines

A technology for security risk and status assessment, applied in data processing applications, instruments, computing, etc., can solve the problems of lack of generalization and large randomness of scoring

Active Publication Date: 2019-06-04
TONGLING POWER SUPPLY CO OF STATE GRID ANHUI ELECTRIC POWER CO
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Problems solved by technology

However, since the line status assessment is completely dependent on the qualitative scoring of manual experience, the scoring for different transmission lines is relatively random and lacks generalizability

Method used

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  • A method for evaluating the safety risk status of transmission lines
  • A method for evaluating the safety risk status of transmission lines
  • A method for evaluating the safety risk status of transmission lines

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Embodiment Construction

[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0033] A method for assessing the safety risk status of transmission lines, see figure 1 , to model line faults and fault sources to indicate different line safety risk sources and the losses that these risks bring to line safety.

[0034] Step 1. Construct the occurrence probability model Γ{T,α of line hazard sources k ,k=1,2,...,12,β}, where the probability model of line hazards includes the parameter hazard type T, the line fault type β that causes the hazard and the monthly occurrence probability α in the year k ,k=1,2,...,12.

[0035] The line fault type β is divided into a first-class faul...

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Abstract

The invention discloses a transmission-line security risk state evaluation method. The transmission-line security risk state evaluation method comprises the following steps of building a line danger source occurrence probability model gamma {T, alpha<k>, k=1, 2, ... , 12, beta}, wherein the line danger source occurrence probability model comprises a parameter danger source type T, a type beta of line faults leading to danger sources, and the occurrence probability alpha<k> of each month of a year, wherein k=1, 2, ... , 12; determining the occurrence probability E<1> of the first type of faults of a sectional line, wherein E<1> satisfies the equation (please see the equation in the specification), and determining the occurrence probability E<2> of the second type of faults of the sectional line, wherein E<2> satisfies the equation (please see the equation in the specification); determining the security risk state of the line through the occurrence probability E<1> of the first type of faults and the occurrence probability E<2> of the second type of faults. According to the transmission-line security risk state evaluation method, on the basis that the line danger source occurrence probability model is built, transmission-line security risk state evaluation is achieved by combining line fault cost, and assistant decision-making data are provided for patrol work arrangement of the line according to an evaluation result.

Description

technical field [0001] The invention relates to the field of power system analysis, in particular to a method for evaluating the safety risk state of a power transmission line. Background technique [0002] With the development of society and economy and the expansion of power consumption scale, the scale of transmission network is also increasing rapidly, especially the large-scale high-voltage transmission lines. At the same time, the environment of transmission lines is becoming more and more complex, and the factors that affect the safe operation of transmission lines are regional and seasonal. , randomness and other characteristics make the reliability guarantee of transmission lines a difficult problem. At the same time, the power operation and maintenance guarantee department is limited by labor costs, and cannot timely and comprehensively inspect the transmission lines, resulting in the failure to effectively control the safety risks of the transmission lines, and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q50/06
Inventor 施伟董泽才唐贵华佘世洲吕孝平
Owner TONGLING POWER SUPPLY CO OF STATE GRID ANHUI ELECTRIC POWER CO
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