Electric power system transient stability simulation method based on implicit fine numerical integral

A numerical integration and transient stability technology, applied to electrical components, circuit devices, AC network circuits, etc., can solve problems such as large amount of calculation and calculation speed that cannot meet the online calculation requirements of power systems
CN102664397AInactive Publication Date: 2012-09-12ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2012-09-12
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses an electric power system transient stability simulation method based on a fine integral algorithm. Compared to an existing electric power system transient stability value integral method, in the method of the invention, non-linear differential equations describing an electric power system transient process are expressed as a linear part and a nonlinear part. Through reasonably selecting a system matrix of the linear part and using an integrable function to approximate a nonlinear term function, an implicit fine single step integral formula is derived. Through finely solving a state transition matrix corresponding to a linear part system matrix, the integral formula with high precision can be obtained so as to reduce a calculated amount of the transient stability simulation.
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Description

technical field

[0001] The invention belongs to the technical field of power system automation, and in particular relates to a power system transient stability simulation method based on implicit fine numerical integration. Background technique

[0002] Power system transient stability analysis is one of the most basic and core contents in power system analysis and calculation. With the development of power system operation control technology, advanced technologies such as online dynamic security analysis, security and stability emergency control, preventive control, and intelligent dispatching have been gradually popularized and applied in power systems. The prerequisite for the realization of these advanced technologies is to be able to quickly, accurately and reliably calculate the transient stability of large-scale power systems.

[0003] Numerical integration method and direct method, and a hybrid analysis method combining numerical integration and direct method are th...

Claims

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