Commutation control method and device of converter, electronic equipment and readable storage medium

A converter and phase control technology, applied to output power conversion devices, AC power input conversion to DC power output, electrical components, etc., can solve problems such as the influence of DC system operation stability, and improve stable operation, Easy to operate and maintain balance

Pending Publication Date: 2022-02-11
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the embodiments of the present invention provide a commutation control method, device, electronic equipment, and readable storage medium of a converter, so as to avoid commutation failure caused by an AC fault at the receiving end, which will affect the operation stability of the DC system. The problem

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  • Commutation control method and device of converter, electronic equipment and readable storage medium
  • Commutation control method and device of converter, electronic equipment and readable storage medium
  • Commutation control method and device of converter, electronic equipment and readable storage medium

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Embodiment Construction

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0038] The controllable commutation converter can combine the advantages of the LCC converter and the VSC converter, and it can realize the controllable bridge arm current no matter in the steady state or during the AC fault, and solve the problem of commutation failure to the greatest extent. However, when the commutation failure is caused by the AC fau...

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Abstract

The invention relates to the technical field of direct current power transmission systems, and discloses a commutation control method and device of a converter, electronic equipment and a readable storage medium. The method comprises the following steps: acquiring a commutation state of a converter; judging whether the commutation state is normal or not; and when the commutation state is abnormal, controlling the converter to start an energy consumption mode, and adjusting energy consumption parameters of the converter. According to the invention, on the basis of ensuring successful commutation from the main branch to the auxiliary branch, the transmission power of the current converter in the DC power transmission system can be maintained by adjusting the energy consumption parameter of the current converter, the influence of a receiving end AC fault on the DC power transmission system is avoided, and the DC power transmission system is ensured to be in a stable operation state.

Description

technical field [0001] The invention relates to the technical field of direct current transmission systems, in particular to a commutation control method, device, electronic equipment and a readable storage medium of a converter. Background technique [0002] The thyristors used in the converters of traditional line commutated converter high voltage direct current (LCC-HVDC) transmission systems need to rely on the AC system to provide commutation voltage, and commutation failures are prone to occur in the event of AC system failures, etc. , resulting in a surge of DC current, and a rapid loss of DC transmission power. However, the switching device IGBT used in the flexible DC transmission (Voltage Source Converter based High Voltage Direct Current Transmission, VSC-HVDC) has the ability of controllable switching, and its DC transmission basically does not have the problem of commutation failure. [0003] In order to solve the commutation failure problem of LCC-HVDC transmi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/00H02M7/757H02M7/797H02J3/36
CPCH02J3/36H02M7/00H02M7/7575H02M7/797Y02E60/60
Inventor 高冲周行星张静杨俊盛财旺贺冬珊
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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