Simulation replay method for fault record of high-voltage direct current power transmission system

A technology of power transmission system and high voltage direct current, which is applied in the direction of alternating current network circuits, electrical components, circuit devices, etc., and can solve the problems of long simulation time and complex direct current system.

Active Publication Date: 2016-01-13
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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Problems solved by technology

[0003] However, since the control of the DC system is much more complicated than that of the AC system, and its electrical quantity signals and control signals are far more than those of the AC transmission system, the corresponding DC model simulation scale is large, and the single simulation time takes a long time, so its failure Simulation playback also faces some difficulties: for example, how to select appropriate fault

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  • Simulation replay method for fault record of high-voltage direct current power transmission system
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  • Simulation replay method for fault record of high-voltage direct current power transmission system

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[0023] In order to further illustrate the technical means adopted by the present invention and the achieved effects, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and preferred embodiments.

[0024] Such as figure 1 as shown, figure 1 It is a flow chart of a simulation playback method for fault recording of a HVDC power transmission system according to an embodiment of the present invention.

[0025] A simulation playback method for fault recording of a high-voltage direct current transmission system, comprising the following steps:

[0026] Step S1: Obtain the voltage waveform data of the rectifier station and the AC bus of the inverter station before and after the fault of the HVDC power transmission system through the data reading module, and output it to the fault waveform voltage source of the rectifier station and the inverter station of the HVDC power transmission system sim...

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Abstract

The invention relates to a simulation replay method for a fault record of a high-voltage direct current power transmission system. The method comprises the steps of acquiring the amplitude and the phase of a fault waveform voltage source of a rectifier station and an inverter station before and after a fault of the high-voltage direct current power transmission system through a data reading module respectively, and adjusting the amplitude and the phase of an ideal voltage source of the rectifier station and the inverter station according to the amplitude and the phase respectively to be consistent with the amplitude and the phase of the fault waveform voltage source; and controlling the on-off states of a fault waveform voltage source circuit breaker and an ideal voltage source circuit breaker through a handover control switch, thus realizing stable handover between the ideal voltage source and the fault waveform voltage source based on fault recording data, avoiding manually adjusting simulation parameters for multiple times, reducing the number of simulations, realizing automatic simulation replay of the fault record of the high-voltage direct current power transmission system and improving the fault replay accuracy and the simulation efficiency.

Description

technical field [0001] The invention relates to the technical field of power system fault simulation, in particular to a simulation playback method for fault recording of a high-voltage direct current transmission system. Background technique [0002] In the actual high-voltage direct current transmission system, when the AC system fails and the DC system cannot operate normally, the secondary system of the converter station will trigger the fault recording system of the converter station, and the signal waveforms of the converter station before and after the fault Save it; if the real fault data of the actual system can be used to replay the fault in the detailed model of the HVDC transmission system, it will help engineers analyze the mutual influence mechanism of the AC and DC systems, optimize and improve the DC control and protection system, and thus improve DC operation. reliability. [0003] However, since the control of the DC system is much more complicated than th...

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Application Information

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IPC IPC(8): H02J3/00H02J3/36
CPCY02E60/60
Inventor 郭龙赵晓斌黎小林黄莹杨煜卢毓欣
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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