An electromagnetic transient simulation method and system for transmission lines

An electromagnetic transient simulation and transmission line technology, applied in the direction of circuit devices, AC network circuits, electrical components, etc., can solve the problems of fixed step size, limited power system scale, and low simulation efficiency, so as to improve the simulation speed and speed up Effect of simulation speed

Inactive Publication Date: 2019-04-09
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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  • Application Information

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Problems solved by technology

However, when the step size is small, due to the limited computing power of the computer, the scale of the power system that can be simulated is greatly limited.
When the system scale is large, the simulation efficiency of this model will be greatly reduced, especially for electromagnetic transient simulation of large-scale power systems, the step size of the traditional line model is fixed, and the simulation efficiency is low

Method used

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  • An electromagnetic transient simulation method and system for transmission lines
  • An electromagnetic transient simulation method and system for transmission lines
  • An electromagnetic transient simulation method and system for transmission lines

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Embodiment Construction

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0054] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0055] figure 1 It is a schematic flow chart of the electromagnetic transient simulation method of the transmission line of the present invention. like figure 1 As shown, the method includes:

[0056] Step 100:...

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Abstract

The invention discloses an electromagnetic transient simulation method and system for a transmission line. The method comprises: an input signal is obtained, wherein the input signal is a to-be-testedsignal; triangular transformation is carried out on the input signal to obtain a parsing signal; frequency transformation is carried out on the parsing signal to obtain a signal after frequency reduction; a decoupling simulation model of a transmission line is constructed; inputting of the signal after frequency reduction into the decoupling simulation model of the transmission line is simulatedto obtain voltage values and current values of the input signal, wherein the voltage values include a voltage value of a first node of the transmission line and a voltage value of a tail node of the transmission line and the current values include a current value of the first node of the transmission line and a current value of the tail node of the transmission line; and inverse frequency transformation is carried out on the voltage values and the current values of the input signal and an initial voltage value and current value of the input signal are obtained. With the method and system disclosed by the invention, the simulation speed is increased and the simuation efficiency is improved.

Description

technical field [0001] The invention relates to the field of power systems, in particular to an electromagnetic transient simulation method and system for transmission lines. Background technique [0002] In recent years, due to the application of a large number of high-voltage direct current transmission, new energy, and FACTS technologies, the electromagnetic transient process of the power system at the microsecond and millisecond level, the electromechanical transient process at the millisecond and second level, and the medium and long-term dynamic process at the minute level and above The degree of coupling between them is getting higher and higher, and the power system transient process simulation using the quasi-steady model can no longer accurately reflect the system state under some special operating conditions, so the limitations of the electromechanical transient simulation method are becoming more and more limited. protrude. On the other hand, in the electromagne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 姚蜀军汪燕韩民晓张硕郭婉华
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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