Method and device for stability analysis of power system with multiple operating conditions

A system stability and power system technology, applied in data processing applications, instruments, complex mathematical operations, etc., to achieve the effect of easy implementation and simple and effective discrimination

Active Publication Date: 2019-02-05
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Description
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Problems solved by technology

[0005] In view of this, the purpose of the present invention is to overcome the shortcomings in the prior art that it is difficult to analyze the stability of multi-working-condition power systems caused by cascading faults, and to provide a multi-working-condition power system stability analysis method and device

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  • Method and device for stability analysis of power system with multiple operating conditions
  • Method and device for stability analysis of power system with multiple operating conditions
  • Method and device for stability analysis of power system with multiple operating conditions

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Embodiment Construction

[0057] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0058] Detailed exemplary embodiments are disclosed below. However, specific structural and functional details disclosed herein are merely for purposes of describing example embodiments.

[0059] It should be understood, however, that the invention is not limited to the particular exemplary embodiments disclosed, but covers all modifications, equivalents, and alternatives falling within the scope of the disclosure. Throughout the description of the figures, the same reference numerals denote the same elements.

[0060] Also, it should be understood that as used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. Also it will be understood that when a component or unit is referred to as being “connected” or “coupled” to another component or unit, it can be directly connected or coupled to the other component or ...

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Abstract

The invention relates to a multi-working-condition power system stability analysis method and device. The device comprises a data acquisition module, a Markov multi-working-condition system generation module, a stability analysis module and a result output module, wherein the data acquisition module is used for acquiring network structure parameters, power flow before and after a system accident, and a generator frequency and a power angle in a system; the Markov multi-working-condition system generation module is used for establishing a discrete Markov multi-working-condition power system model; the stability analysis model is used for determining a stability criterion and judging the system stability; and the result output module is used for outputting a system stability result judged by the stability analysis model. Through adoption of the multi-working-condition power system stability analysis method and device, the stability of a power system under multiple working conditions can be effectively analyzed. Moreover, the method and device are easy to implement; judgments can be made easily; and the goodness of fit with the practical situation is high.

Description

technical field [0001] The invention relates to the technical field of power system stability analysis, in particular to the technical field of multi-working condition power system stability analysis. Background technique [0002] With the rapid growth of power demand and the increasingly complex grid structure, the multi-working-condition stability problem caused by the topology change caused by the failure of power equipment and components has become one of the most critical issues affecting the safe and stable operation of the power system. Therefore, research The stability of multi-working conditions in the power system has extremely important practical significance. [0003] In the prior art, there are some technical solutions for cascading failure analysis and prevention technologies, mainly focusing on cascading failure search methods, model building methods, and risk assessment methods. Specifically, (1) The search methods for cascading failures include: based on de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/10G06Q50/06
Inventor 马静闫新刘畅郭鹏
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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