Multi-modal digital twin simulation method and device for rail transit traction power supply system
A power supply system, multi-modal technology, applied in the field of rail transit, can solve the problems of different model precision procedures, difficult steady-state and transient models, etc., to achieve the effect of improving accuracy
Active Publication Date: 2021-06-04
BEIJING QIANSIYU ELECTRIC
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Problems solved by technology
Due to the different requirements for steady state and transient state simulation, the precise procedures for the models are also different. At present, it is difficult to realize the steady state and transient state models in the same model. These two simulations are usually carried out on two different simulation platforms.
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[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0033] In order to facilitate the understanding of the embodiments of the present invention, several specific embodiments will be taken as examples for further explanation below in conjunction with the accompanying drawings, and each embodiment does not constitute a limitation to the embodiments of the present invention.
[0034] Such as figure 1 As shown, it is a multi-modal digital twin modeling method of an urban rail power supply system according to the present invention, including:
[0035] Step 1, obtain the pre-established steady-st...
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The embodiment of the invention provides a multi-mode digital twin modeling method and device for an urban rail power supply system. The method comprises the steps that 1, a pre-established steady-state model of the urban rail power supply system is acquired; 2, voltage and power of each traction station are obtained; 3, voltage and power on an alternating current and direct current common node are obtained, and the voltage on the common node is transmitted to the direct current side of a steady-state model; 4, a steady-state AC voltage uassc, a steady-state AC current iassc, a steady-state DC voltage udssc and a steady-state DC current idssc under the condition that the steady-state calculation step length Tsstesp is a preset time length are obtained; 5, a pre-established transient model of a traction power supply system is obtained; 6, a transient-state AC voltage uatsc, a transient-state AC current iatsc, a transient-state DC voltage utdsc and a transient-state current itdsc under each transient step length Tsttsep are obtained; 7, whether the steady-state DC voltage, the steady-state DC current, the steady-state DC voltage udssc and the steady-state DC current idssc are equal to the transient-state AC voltage, the transient-state AC current, the transient-state DC voltage and the transient-state DC current at the ending moment of the transient step length is compared; and if so, the transient model is output.
Description
technical field [0001] The invention relates to the technical field of rail transit, in particular to a multi-modal digital twin simulation method and device for a traction power supply system of rail transit. Background technique [0002] The traction power supply system of urban rail transit is the premise and guarantee for the safe operation of the entire line. The safety and reliability of the power supply system are related to the safety and normal operation of the entire rail transit system. Therefore, research on the power supply system is of great importance to the safe operation of the entire urban rail transit. vital significance. The steady-state model of the power supply system can study and optimize steady-state indicators such as voltage, current, capacity, energy consumption, and power flow distribution. Transient characteristics such as short-circuit current are analyzed and evaluated. [0003] Steady-state simulation refers to a simulation method based on ...
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IPC IPC(8): H02J3/00H02J3/06G06F30/20
CPCH02J3/00H02J3/06G06F30/20H02J2203/10H02J2203/20
Inventor 刘志刚张钢牟富强漆良波陈杰吕海臣邱瑞昌魏路路亮靳鲁王珺楠
Owner BEIJING QIANSIYU ELECTRIC