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A comprehensive risk assessment method for the construction of 500kv terminal substation in power grid

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

Active Publication Date: 2015-08-05
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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  • Abstract
  • Description
  • Claims
  • 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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  • A comprehensive risk assessment method for the construction of 500kv terminal substation in power grid
  • A comprehensive risk assessment method for the construction of 500kv terminal substation in power grid
  • A comprehensive risk assessment method for the construction of 500kv terminal substation in power grid

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Embodiment Construction

[0072] see figure 1 , is a schematic diagram of the 500kV and 220kV hybrid grid of the present invention, figure 2 Then it is the topological diagram of the 500kV terminal station and the 220kV power grid of the embodiment.

[0073] The concrete 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 risk basic data of 500kV terminal substation and its surrounding 500kV power grid and 220kV power grid in the past 5 years, mainly including the failure rate , average repair time for each failure, planned maintenance rate, and average planned maintenance time for each time; the average calculation is performed on the 5-year data, and the obtained data is used as the input data for risk assessment components. In order to improve the calculation effectiveness, two sets of national and regional data should be collected Two sets of c...

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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 which takes into account the loss of the power grid and social impact. Background technique [0002] The scale of the modern power grid is gradually expanding, the structure is becoming more and more complex, and the average electrical distance between each substation is getting smaller and smaller, becoming a strongly connected interconnected synchronous power grid. Such a structure will increase the risk of large-scale power outages and bring great challenges to system scheduling and 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 origina...

Claims

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Application Information

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Patent Type & Authority Patents(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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