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Quantitative evaluation method for stability of power grid

A quantitative evaluation and stable technology, applied in the field of smart grid, can solve the problem of large amount of calculation in time domain simulation, and achieve the effect of rapid calculation

Inactive Publication Date: 2018-02-09
SHANGHAI MUNICIPAL ELECTRIC POWER CO +2
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Problems solved by technology

For large-scale power systems, time-domain simulation requires a lot of calculation and can only be applied to offline analysis at present

Method used

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  • Quantitative evaluation method for stability of power grid
  • Quantitative evaluation method for stability of power grid
  • Quantitative evaluation method for stability of power grid

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Embodiment Construction

[0061] The present invention will be further elaborated below by describing a preferred specific embodiment in detail in conjunction with the accompanying drawings.

[0062] Such as Image 6 As shown, a quantitative evaluation method of a power grid stability situation of the present invention includes the following processes:

[0063] The measurement data about the safety and stability of the power grid is obtained through the calculation and analysis of the power system; the stochastic dynamic power system is modeled; based on the measurement data, the stability of the power system is analyzed by using the critical slowdown theory.

[0064] At present, the data obtained by the calculation and analysis of the power system is structured data, and the measurement data mainly related to the safety and stability of the power grid mainly includes: transient data, which refers to the original sampling point data using the A / D converter, which is used to analyze short-circuit faults...

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Abstract

The invention discloses a quantitative evaluation method for stability of a power grid. The method includes steps of acquiring measurement data related to power grid safety and stability through calculation and analysis of a power system; performing modeling on the random dynamic power system; based on the measurement data, analyzing the stability of the power grid by utilizing a critical slowing-down theory. The method is quick in calculation. A large amount of time domain simulation numerical integration is not needed in semi-analytical method; the semi-analytical method is very suitable fora condition with small diffusion matrix strength in a random process.

Description

technical field [0001] The invention relates to the field of smart grids, in particular to an evaluation method for evaluating the quantization of the grid stability situation by using a semi-analytic method. Background technique [0002] With the development of smart grid and energy Internet, the uncertain factors represented by renewable energy power generation have increased greatly, and the operating environment of power system has become increasingly complex. Traditional model-based power system calculation methods are difficult to accurately describe system characteristics and analyze system operation. risk; at the same time, the rise and development of big data theory has brought new opportunities for power system research. Through comprehensive mining and analysis of data generated by power system operation and simulation, key characteristics of power grid operation can be obtained, which will help It is useful for operators to sort out the system structure and grasp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0639G06Q50/06
Inventor 冯楠郭强冯煜尧崔勇康丽张开宇李禹鹏严正王晗马俊宇
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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