Electromagnetic transient simulation modeling method based on state variable nodal analysis combination frame

A technology of electromagnetic transient simulation and state variables, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., to achieve good feasibility and applicability

Inactive Publication Date: 2013-12-11
POWER GRID TECH RES CENT CHINA SOUTHERN POWER GRID +1
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Problems solved by technology

Obviously, the traditional electromagnetic transient simulation program based on a single framework cannot meet this requirement, and it is necessary to develop an electromagnetic transient simulation modeling method based on a state variable node analysis hybrid framework

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  • Electromagnetic transient simulation modeling method based on state variable nodal analysis combination frame
  • Electromagnetic transient simulation modeling method based on state variable nodal analysis combination frame
  • Electromagnetic transient simulation modeling method based on state variable nodal analysis combination frame

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Embodiment Construction

[0036] The electromagnetic transient simulation modeling method based on the state variable node analysis hybrid framework of the present invention will be described in detail below with reference to the embodiments and drawings.

[0037] The electromagnetic transient simulation modeling method based on the state variable node analysis hybrid framework of the present invention belongs to the field of power system simulation, and is especially suitable for various active distribution networks and local islands containing distributed power sources, energy storage devices and microgrids Run a transient simulation of the grid. TSDG (Transient Simulator for Distributed Generation Systems and Microgrid) is a calculation program for distributed generation microgrid system transient simulation. On the basis of this program, the present invention realizes the electromagnetic transient State simulation modeling method. The following uses the IEEE123 node distribution network calculatio...

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Abstract

The invention discloses an electromagnetic transient simulation modeling method based on a state variable nodal analysis combination frame. The method comprises the steps that an electric system is divided into a research system and an external system according to the nature of research questions, the external system is modeled through a state equation to acquire an output equation, a trapezoidal method is adopted to conduct differencing on the acquired state equation, the research system is modeled through nodal equations, and the calculation equation Gglobalu=iglobal of the state variable-nodal analysis combination frame is calculated to acquire a nodal voltage instantaneous value u (t) of the whole system; a nodal conductance matrix Gglobal of the whole system is regenerated, the nodal voltage instantaneous value u (t) of the whole system is acquired through a combination frame interpolation algorithm; an equivalent node injection current source column vector iN_hist of a next-moment state equation is calculated, and a node injection current source column vector iglobal based on the whole state variable-nodal analysis combination frame system is updated. The electromagnetic transient simulation modeling method based on a state variable nodal analysis combination frame achieves electric system state variable-nodal analysis combination simulation through interface variables.

Description

technical field [0001] The invention relates to a power system simulation modeling method. In particular, it relates to an electromagnetic transient simulation modeling method based on a state variable nodal analysis hybrid framework. Background technique [0002] In the research of power system time-domain simulation, corresponding digital simulation methods have been developed for the electromagnetic transient process and the electromechanical transient process, namely the electromagnetic transient simulation method and the electromechanical transient simulation method. There are completely different characteristics to the simulation calculation method. The electromagnetic transient simulation of the power system mainly reflects the change process of the voltage and current generated by the interaction between the electric field and the magnetic field in the system, while the electromechanical transient simulation mainly focuses on the change process of the mechanical mot...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 洪潮周保荣姚文峰王成山李鹏于浩宋关羽
Owner POWER GRID TECH RES CENT CHINA SOUTHERN POWER GRID
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