Assessment method and system for electric transmission and transformation equipment states

A technology for power transmission and transformation equipment and equipment status, which is applied in the field of power transmission and transformation systems, and can solve the problems of large data volume, low practicability, and insufficient data volume.

Inactive Publication Date: 2016-02-24
GUANGZHOU POWER SUPPLY CO LTD
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Problems solved by technology

[0004] Judging from the current research situation at home and abroad, the degradation evaluation system of power transmission and transformation equipment is still in its infancy and many aspects are not perfect enough.
Although some scholars have also applied some intelligent methods to the evaluation system of power transmission and transformation equipment, such as: expert system diagnosi

Method used

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  • Assessment method and system for electric transmission and transformation equipment states
  • Assessment method and system for electric transmission and transformation equipment states
  • Assessment method and system for electric transmission and transformation equipment states

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Embodiment Construction

[0047] Such as figure 1 As shown, a method for evaluating the status of power transmission and transformation equipment includes the following steps:

[0048] S30: Collect field data of N equipment status characteristics of power transmission and transformation equipment.

[0049] The device state feature is used to characterize the state of the device, and each device may have multiple device state features. For example, equipment condition characteristics that characterize cable degradation are partial discharge levels and dielectric dissipation factors.

[0050] S40: Calculate the cumulative probabilities of the N equipment state features according to the field data and the corresponding cumulative distribution functions obtained according to the pre-modelling.

[0051] Specifically, the field data of each equipment state feature is brought into the corresponding cumulative distribution function obtained by pre-modeling to calculate the cumulative probability of each equi...

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Abstract

The invention relates to an assessment method and system for electric transmission and transformation equipment states. The assessment method comprises the steps of collecting site data of N equipment state characteristics of the electric transmission and transformation equipment; separately calculating the cumulative probability of the N equipment state characteristics according to the site data and a corresponding cumulative distribution function obtained by pre-modeling; calculating a score-reducing value of the N equipment state characteristics according to the cumulative probability and a characteristic degradation score-reducing model corresponding to the cumulative distribution function; separately setting weights for the N equipment state characteristics; and obtaining a total score-reducing value of the electric transmission and transformation equipment according to the score-reducing value and the weights of the N equipment state characteristics, and assessing the states of the electric transmission and transformation equipment according to the total score-reducing value of the electric transmission and transformation equipment. The assessment method is simple, free of demand on the data size, capable of rapidly and accurately assessing the healthy condition of the electric transmission and transformation equipment, and relatively high in practicability.

Description

technical field [0001] The invention relates to the field of power transmission and transformation systems, in particular to a method and system for evaluating the status of power transmission and transformation equipment. Background technique [0002] Economic development is inseparable from electric energy, and power transmission and transformation equipment is an important part of the power grid. With the development of the national economy and the power grid, on the one hand, the scale of the power grid continues to expand, the number of power transmission and transformation equipment surges, and the pressure on the reliability of power supply increases; [0003] At present, the judgment of the health level and operation status of power transmission and transformation equipment at home and abroad is mainly based on relevant standards, experts and operating experience benchmarks, through power failure preventive tests PT (PreventionTest) and regular maintenance TBM (TimeB...

Claims

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Application Information

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IPC IPC(8): G06Q50/06
Inventor 陆国俊栾乐杨柳李光茂肖天为
Owner GUANGZHOU POWER SUPPLY CO LTD
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