Comprehensive reliability assessment method for 500kV terminal substation

A reliability and substation technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problem of not being able to meet the needs of reliability assessment of 500kV terminal substations, achieve reasonable index parameter settings, rigorous model theory, Evaluate the effect of credible results

Active Publication Date: 2014-06-25
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Problems solved by technology

Generally speaking, the current reliability evaluation methods are decomposed into several links for evaluation separately, which cannot meet the needs of the overall reliability evaluation of 500kV terminal substations

Method used

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  • Comprehensive reliability assessment method for 500kV terminal substation
  • Comprehensive reliability assessment method for 500kV terminal substation
  • Comprehensive reliability assessment method for 500kV terminal substation

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Embodiment Construction

[0066] The specific steps of a preferred embodiment of the 500kV terminal substation reliability evaluation calculation method based on comprehensive cause analysis of the present invention are as follows:

[0067] Step 1: Collect the reliability basic data of the 500kV terminal substation and its surrounding 500kV power grid and 220kV power grid in the past 5 years, such as transmission lines, transformers, circuit breakers, busbars, disconnectors, generators and other components, mainly including faults Rate, average repair time per failure, planned maintenance rate, average planned maintenance time per time, average calculation of 5-year data, and the obtained data is used as component input data for reliability assessment. In order to improve the calculation effectiveness, national and regional data should be collected Two sets of data do two sets of calculations.

[0068] To evaluate the reliability of the terminal substation, the reliability statistical data of the main ...

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Abstract

The invention discloses a comprehensive reliability assessment method for a 500kV terminal substation. The method comprises the following steps of: S1. collecting reliability essential data of 500kV terminal substations in a certain range in a period of time, and main elements of peripheral 500kV power grid and 220kV power grid, wherein the reliability essential data comprise failure rate, average each failure recovery time, schedule overhauling rate and average each schedule overhauling time, respectively averaging the data to obtain input data for reliability assessment of each element; S2. calculating the reliability of the 500kV terminal substation and calculating the influence of 500kV terminal substation construction to the peripheral 500kV power grid, wherein the calculation of the reliability of the 500kV terminal substation comprises: S2-1, respectively calculating reliability of 500kV interconnection, 500kV terminal substation main connection and 220kV receiving end power grid; S2-2, analyzing the 500kV interconnection failure, 500kV terminal substation main connection failure and 220kV receiving end power grid failure according to the serial connection failure mode to calculate reliability index of 500kV terminal substation. A reliability model, an indicator system and a reliability calculating method of 500kV terminal substation are created to guide the construction of the 500kV terminal substation.

Description

technical field [0001] The invention belongs to the technical field of grid reliability evaluation. Aiming at the needs of building 500kV terminal substations in economically developed areas, a comprehensive and reasonable evaluation of its reliability is realized through theoretical models and statistical analysis, providing auxiliary decision-making information for the planning and design of 500kV terminal substations. Background technique [0002] With the further development of urban construction, the continuous increase of urban grid load, the increasingly tight land use, and the optimization of living environment, higher requirements are put forward for power supply to urban urban centers. Therefore, the power grid extends into the center of the urban area through 500kV cables and 500kV substations, which has become a new power supply mode, that is, terminal substation power supply mode. [0003] The positive role of the power supply mode of the 500kV terminal substat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/00
CPCY04S10/54Y04S10/60Y04S10/50
Inventor 杨汾艳唐景星鲁宗相陈迅叶希兑潇玮
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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