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Reliability Evaluation Method of Large Power Grid Based on Uniform Design

A uniform design and reliable technology, applied in computing, data processing applications, instruments, etc., can solve problems such as inaccurate results and large amount of calculation, and achieve the effect of reducing the amount of calculation and the amount of system state data

Active Publication Date: 2021-12-03
CHONGQING UNIV
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Problems solved by technology

[0006] Aiming at the defects of large amount of calculation and inaccurate results of the above-mentioned existing large power grid reliability evaluation methods, the present invention provides a large power grid reliability evaluation method based on uniform design, which can calculate by using less system state data Obtain accurate large power grid reliability index

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  • Reliability Evaluation Method of Large Power Grid Based on Uniform Design
  • Reliability Evaluation Method of Large Power Grid Based on Uniform Design
  • Reliability Evaluation Method of Large Power Grid Based on Uniform Design

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Embodiment

[0074] A large power grid reliability assessment method based on uniform design, the key lies in: figure 1 shown, proceed as follows:

[0075] S1. Determine the number M of components in the large power grid, and input the electrical parameters and reliability parameters of the large power grid. In this embodiment, the IEEE-RTS79 system is used, such as image 3 As shown, the system contains 32 generator sets with a total installed capacity of 3405MW, and a single level load with a peak load of 2850MW is used to determine the maximum failure order M of the components 0 =6, where M>M 0 ;

[0076] In order to compare and illustrate the effectiveness of the reliability evaluation method of uniform design, the system reliability index is solved by analytical method before the implementation of this method. The following table lists the system reliability index and the reliability of each order of fault events obtained by the analytical method Indicators and their contribution r...

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Abstract

The invention discloses a large power grid reliability evaluation method based on uniform design, which is characterized in that: the following steps are carried out: S1, input the electrical parameters and reliability parameters of the large power grid, and determine the maximum fault order M of the components 0 ; S2. Using the enumeration method to obtain low-order fault event samples, random sampling of high-order fault events, and uniform design; S3. Calculate the probability value P and frequency value F of each order fault event samples, and then respectively Calculate the optimal power flow for each order of fault event samples, and obtain the load shedding DNS of each order of fault event samples; S4, calculate the mean value of the reliability index of each order system state; S5, calculate the reliability index value of each order system state; S6. Accumulate the reliability indexes of fault events of each order to obtain the reliability index value of the large power grid system. The invention reduces the amount of system state data to be collected; and effectively reduces the calculation amount of the reliability evaluation of the large power grid.

Description

technical field [0001] The invention relates to the technical field of power system reliability evaluation, in particular to a large power grid reliability evaluation method based on uniform design. Background technique [0002] The power system is gradually developing into a super-large-scale complex system, which has the characteristics of super-large-scale capacity, wide-area distribution in space, and large disturbance propagation range. At present, the power system is becoming more and more complex, and this rapid development has brought severe challenges to its stable operation and control. [0003] With the development of the electricity market, the suppliers of the power system pay more attention to the long-term benefits of the power grid, that is, to maintain a lower operating cost under certain reliability. However, most of the existing reliability assessment methods for large power grids are state analysis method and Monte Carlo simulation method. Analysis and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/06393G06Q50/06
Inventor 胡博王蕾报谢开贵孙青松伏坚曹茂森
Owner CHONGQING UNIV
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