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Electromagnetic transient simulation method and device for power electronic switch

A power electronic switch, electromagnetic transient simulation technology, applied in the direction of design optimization/simulation, etc., can solve the problems of numerical oscillation and synchronous switching, low accuracy of multi-switch simulation and so on

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Problems solved by technology

[0005] This application provides an electromagnetic transient simulation method and device for a power electronic switch, which solves the problems of numerical oscillation and low simulation accuracy of synchronous switches and multiple switches in the prior art for power electronic switches during electromagnetic transient simulation

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  • Electromagnetic transient simulation method and device for power electronic switch
  • Electromagnetic transient simulation method and device for power electronic switch
  • Electromagnetic transient simulation method and device for power electronic switch

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Embodiment Construction

[0045] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar promotions without violating the connotation of the present application. Therefore, the present application is not limited by the specific implementation disclosed below.

[0046] figure 1 A schematic flow chart of an electromagnetic transient simulation method for a power electronic switch provided in an embodiment of the present application, combined below figure 1 The method provided in the embodiment of the present application will be described in detail.

[0047] Step S101 , search the action status of the power electronic switch, determine the action time of the switch, and obtain the changed admittance matrix.

[0048] Before searching for the action of the power electronic swi...

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Abstract

The invention discloses an electromagnetic transient simulation method for a power electronic switch, and the method comprises the steps: carrying out the automatic classification of power electronicswitch equipment, and carrying out the unified integration of strong correlation switch equipment; searching the action condition of the power electronic switch, determining the action moment of the switch, and obtaining a changed admittance matrix; calculating an injection current source used in the next simulation time step, and if the switching action does not occur, calculating the injection current source by using the calculation result of the previous simulation time step and calculating the node voltage and the branch current of the next simulation time step by using the updated injection current source; if a switching action occurs, calculating a new injection current source by adopting a method of eliminating numerical oscillation through twice iterative calculations; node voltageand branch current of the next simulation time step are calculated, numerical oscillation is eliminated by adopting a power electronic electromagnetic transient simulation method based on iteration.The problem of low simulation accuracy of a synchronous switch and a multi-switch is solved by utilizing a combined power electronic switch mode and a multi-switch action search method.

Description

technical field [0001] The application relates to the technical field of electromagnetic transient simulation of power systems, in particular to an electromagnetic transient simulation method of a power electronic switch, and at the same time relates to an electromagnetic transient simulation device of a power electronic switch. Background technique [0002] The dynamic process of power electronic switch is different from the continuous action process of traditional AC equipment, and it is a sudden change process. Therefore, in the electromagnetic transient simulation process, some special problems will be encountered, such as: how to determine the action time when the switch action time is inconsistent with the step size, the numerical oscillation problem that may be caused by the switch action, and the sequential action of multiple switches. It is necessary to adopt a reasonable simulation method for these problems to ensure the accuracy of the simulation. [0003] In the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20
Inventor 穆世霞刘文焯侯俊贤李霞王虹富宋新立苏志达许冰许克王博
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