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Comprehensive risk assessment method for power grid 500kV terminal substation construction

A comprehensive risk and substation technology, applied in the field of comprehensive risk assessment

Active Publication Date: 2013-04-17
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

At present, there is no risk assessment and calculation method for the 500kV terminal substation of the power grid that takes into account the loss of the power grid and social impact

Method used

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  • Comprehensive risk assessment method for power grid 500kV terminal substation construction
  • Comprehensive risk assessment method for power grid 500kV terminal substation construction
  • Comprehensive risk assessment method for power grid 500kV terminal substation construction

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Experimental program
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Embodiment Construction

[0072] See figure 1 , Is a schematic diagram of the 500kV and 220kV hybrid power grid of the present invention, figure 2 It is the topology diagram of the 500kV terminal station and the 220kV power grid of the embodiment.

[0073] The specific steps of the preferred embodiment of the 500kV terminal substation risk assessment calculation method based on comprehensive cause analysis of the present invention are as follows:

[0074] Step 1: Collect the basic risk data of the 500kV terminal substation and its surrounding 500kV grid and 220kV grid main components such as transmission lines, transformers, circuit breakers, busbars, disconnectors, generators and other components in the past 5 years, mainly including failure rate , Average repair time per failure, planned overhaul rate, average planned overhaul time per time; average calculation of 5 years of data, the data obtained as the component input data for risk assessment, in order to improve the effectiveness of the calculation, ...

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Abstract

The invention relates to a comprehensive risk assessment method for power grid 500kV terminal substation construction and belongs to the technical field of electrical engineering. By enabling a 500kV substation to be connected to a power grid in a terminal station mode, a 500kV grid structure can be optimized, but lowering of the reliability level and increasing of the risk are caused simultaneously, and accordingly comprehensive assessment needs to be performed on the rick of the terminal station. To solve the problems, a comprehensive 500kV terminal station risk index system and the corresponding risk assessment method are provided, and the risk of the 500kV terminal station is quantized in four aspects including power grid safety, loss of power shortage and power supply, equipment damage and social influence. According to the method, risk factors in the four aspects including the power grid safety, the loss of power shortage and power supply, the equipment damage and the social influence are considered comprehensively, direct technical influence and indirect social influence of the power grid risk are covered comprehensively, and safety quantization of a planning scheme is accurate and comprehensive.

Description

Technical field [0001] The invention relates to a comprehensive risk assessment method for the construction of a power grid terminal substation, in particular to a comprehensive risk assessment method for the construction of a power grid 500kV terminal substation that includes power grid losses and social influences. Background technique [0002] The scale of modern power grids is gradually expanding, the structure is becoming more and more complex, and the average electrical distance between various substations is getting smaller and smaller, and it has become a strongly connected interconnected synchronous power grid. Such a structure will increase the risk of large-scale power outages, and bring great challenges to the system scheduling operation. The construction of terminal stations, as a means of simplifying the grid structure and realizing high-density power supply to the load center, has attracted more and more attention, and gradually developed from the original 110kV an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 杨汾艳唐景星鲁宗相吴科成兑潇玮盛超陈晓科赵艳军张跃王奕徐柏榆翁洪杰
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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