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Flexible direct current transmission operation simulation method and device

A technology of flexible DC transmission and simulation method, applied in the field of power system, can solve the problems of ignoring the dynamic characteristics of the inner loop of the controller and being unable to use it.

Pending Publication Date: 2021-12-31
ELECTRIC POWER RES INST STATE GRID JIBEI ELECTRIC POWER COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the transfer function of the inner loop control module in the electromechanical transient model built in this patent is 1, that is, the dynamic characteristics of the inner loop of the controller are ignored. The present invention focuses on the electromechanical transient equivalent construction of the passive side converter. In some simulation parameters and simulation conditions, the inner loop control system of the converter cannot be omitted, so the second technology cannot be used

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  • Flexible direct current transmission operation simulation method and device
  • Flexible direct current transmission operation simulation method and device
  • Flexible direct current transmission operation simulation method and device

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Embodiment Construction

[0066] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0067] It should be noted that the flexible direct current transmission operation simulation method and device disclosed in this application can be used in the field of power system technology, and can also be used in any field other than the power system technical field. The flexible direct current transmission operation simulation method and device disclosed ...

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Abstract

The embodiment of the invention provides a flexible direct current power transmission operation simulation method and device, and relates to the technical field of power systems. The method comprises the following steps: inputting current data of three-phase alternating current into a preset flexible direct current power transmission passive side electromechanical transient model to obtain bus voltage of a passive side; according to the bus voltage of the passive side, performing corresponding flexible direct current power transmission operation, and the passive side electromechanical transient model being used for simulating the electromechanical transient state of the passive side in the flexible direct current power transmission system. According to the invention, the electromechanical transient condition of the flexible DC power transmission passive side can be effectively simulated, the process of the flexible DC power transmission operation can be visually reflected, and the whole flexible DC power transmission operation can be better controlled.

Description

technical field [0001] The present application relates to the technical field of electric power systems, in particular to a method and device for simulating operations of flexible direct current transmission. Background technique [0002] The transient modeling and simulation of the flexible DC converter supplying power to the passive network includes two types: electromagnetic transient modeling and electromechanical transient modeling. In terms of electromagnetic transient modeling, the switching process of power electronic devices is generally considered, and a detailed model of each part of the MMC is established. The model is accurate and specific, and is suitable for studying the electromagnetic relationship and control strategy inside the MMC; There are problems such as limited solution scale and speed, and many parameters in terms of the interaction of the two elements, so it is necessary to establish a simplified electromechanical transient model. At present, the d...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/36H02J3/24
CPCH02J3/36H02J3/24H02J2203/20Y02E60/60
Inventor 王炳辉李雨安文宇黄天啸谢欢曹天植辛光明陈瑞王晓斐张思琪夏雪易姝娴刘瑛琳任翔卢文清
Owner ELECTRIC POWER RES INST STATE GRID JIBEI ELECTRIC POWER COMPANY