Extra-high-voltage DC power transmission line live-line work safety evaluation method and system

An ultra-high voltage DC, live operation technology, applied in data processing applications, instruments, calculations, etc., can solve problems such as the inability to reflect the importance of hierarchical relationships, the inability to reflect the influence of influencing factors, and the high requirements for sample data consistency and accuracy.

Inactive Publication Date: 2018-03-30
STATE GRID CORP OF CHINA +2
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Problems solved by technology

However, on the one hand, the program requires a large amount of sample data, which requires high consistency and accuracy of the sample data, and it determines the risk factors by fuzzifying the risk factors in the input risk factor concentration The proportion in the evaluation set cannot reflect the actual physical meaning of each factor and the hierarchical relationship and relative importance between them. Therefore, it is difficult to use accurate weights to measure t

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  • Extra-high-voltage DC power transmission line live-line work safety evaluation method and system
  • Extra-high-voltage DC power transmission line live-line work safety evaluation method and system
  • Extra-high-voltage DC power transmission line live-line work safety evaluation method and system

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[0029] In the following, the present invention will be further described in detail in conjunction with the accompanying drawings and embodiments, so as to make the purpose, technical solutions and advantages of the present invention more clear. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] figure 1 A safety assessment method for live work on UHV DC transmission lines according to an embodiment of the present invention is shown, which will be described in detail below in conjunction with various implementations of its application to ±800kV DC lines.

[0031] Step 101: Establish a multi-level fuzzy comprehensive evaluation model set of factors

[0032] Factor set U={U 1 ,U 2 ,...,U m} is a general set composed of various factors that affect the evaluation object, among which m elements represent various influencing factors, among which these influencing factors...

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Abstract

The invention discloses a safety evaluation method and system for live work of an extra-high voltage direct current transmission line. The calculation process has higher reliability, and the evaluation result can accurately reflect the comprehensive influence of all influencing factors on the evaluation result. The method includes: establishing a multi-level fuzzy comprehensive evaluation model of factor sets; stratifying each factor according to the subordination relationship between the factors in the factor set and constructing a weight set and a corresponding priority relationship matrix; establishing a fuzzy consistent unit according to the factor set Factor evaluation matrix; establish fuzzy comprehensive evaluation set according to factor set, weight set and single factor evaluation matrix; obtain multi-level fuzzy comprehensive evaluation results according to fuzzy comprehensive evaluation set.

Description

technical field [0001] The invention relates to the technical field of safety assessment for live work of UHV direct current transmission lines, in particular to a safety evaluation method and system for live work of UHV direct current transmission lines. Background technique [0002] UHV refers to the voltage level of ±800 kV and above direct current and 1000 kV and above alternating current. In the process of safety risk assessment, UHV power supply enterprises are faced with various operation methods. For example, substation operation, substation overhaul construction, power transmission operation, power transmission overhaul construction, power distribution operation, power distribution overhaul construction, dispatching communication automation, high-voltage oil service instrument operation, internal line and metering operation, vehicle traffic, etc. During the operation of each operation mode, many risk factors faced will cause personal injury or economic loss. Among...

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0635G06Q50/06
Inventor 舒野范强张亚迪白仕雄包中福陈波王鸿杜毅邱中华
Owner STATE GRID CORP OF CHINA
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