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A large power grid reliability assessment method based on uniform design

A uniform design, reliable technology, applied in computing, data processing applications, instruments, etc., can solve the problems of inaccurate results and large amount of calculation.

Active Publication Date: 2019-03-08
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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  • A large power grid reliability assessment method based on uniform design
  • A large power grid reliability assessment method based on uniform design
  • A large power grid reliability assessment method 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 assessment method based on uniform design, and the method is characterized in that the method comprises the following steps of S1 inputting electrical parameters and reliability parameters of a large power grid, and determining the maximum fault order M0 of an element; S2 acquiring a low-order fault event sample by adopting an enumeration method, randomly sampling a high-order fault event, and uniformly designing the high-order fault event; S3 calculating a probability value P and a frequency value F of each order of fault event sample, and performing optimal power flow calculation on each order of fault event sample to obtain a load shedding quantity DNS of each order of fault event sample; S4 calculating a reliability index mean value of each order of system state; S5 calculating a reliability index value of each order of system state; and S6 accumulating the reliability indexes of the fault events of each order to obtain the reliability index value of the large power grid system. According to the invention, the system state data amount needing to be acquired is reduced; and the calculation amount of large power grid reliability assessment is effectively reduced.

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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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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