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DC magnetic bias impact risk assessment system and method based on hazard analysis

A risk assessment system and DC bias technology, applied in the field of DC bias research and substation operation, can solve problems such as neglect, achieve high accuracy and improve evaluation reliability

Inactive Publication Date: 2017-08-18
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above achievements mainly focus on the equipment itself, relatively ignoring the influence of the bias current on the operation of the power grid. The analysis and governance of the problem should be based on the power grid in a certain area, or even a higher height. Therefore, it is necessary to comprehensively consider the operation of the power grid, environmental protection efficiency and equipment safety, and optimize the overall solution for governance

Method used

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  • DC magnetic bias impact risk assessment system and method based on hazard analysis
  • DC magnetic bias impact risk assessment system and method based on hazard analysis
  • DC magnetic bias impact risk assessment system and method based on hazard analysis

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Embodiment Construction

[0038] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0039] like figure 1 As shown, the present invention provides a method for assessing the risk of DC bias impact based on hazard analysis, comprising the following steps:

[0040] Step 1), setting the evaluation index.

[0041] The evaluation indicators of this method include three aspects of power grid operation, equipment safety and environmental protection, as shown in Table 1.

[0042] Table 1

[0043]

[0044]

[0045] In step 2), the weight factors corresponding to each evaluation index are calculated by fuzzy algorithm based on hazard analysis.

[0046] The purpose of ...

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Abstract

The invention relates to a DC magnetic bias impact risk assessment system and a method based on hazard analysis. The DC magnetic bias impact risk assessment system comprises an evaluation index storage module used for storing multiple set evaluation indexes, a weight factor acquisition module used for calculating the weight factor corresponding to each evaluation index through a fuzzy algorithm based on hazard analysis, and a comprehensive evaluation module used for getting a comprehensive evaluation result according to the index value of each evaluation index and the corresponding weight factor. Compared with the prior art, the advantage is that the system and the method can achieve high accuracy in evaluation result, and can effectively guide the formulation of DC bias suppression measures.

Description

technical field [0001] The invention relates to the technical field of DC bias research and substation operation, in particular to a risk assessment system and method for DC bias impact based on hazard analysis. Background technique [0002] In the case of DC system debugging, maintenance or failure, HVDC power transmission will adopt the operation mode of single pole ground loop, and huge DC current will flow into the ground through the DC grounding pole, and cause significant changes in ground potential in a wide range. The ground potential of the substation is shifted, causing a DC bias current. The DC bias current can cause the DC bias phenomenon of the transformer. The DC bias of the transformer will increase the noise of the transformer, increase the vibration, etc., and may also cause overheating and increase the harmonic distortion of the AC grid. In special cases, it may cause a certain degree of interference to the surrounding electronic equipment, and the long-te...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06G06N5/04
CPCG06N5/048G06Q10/0635G06Q50/06
Inventor 傅晨钊赵丹丹苏磊司文荣黄华
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO