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A method and apparatus for shielding lightning intrusion waves at a VSC DC converter station

A DC converter station, intrusion wave technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as inability to effectively protect against lightning intrusion waves

Pending Publication Date: 2018-12-25
CHINA ELECTRIC POWER RES INST +4
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  • Claims
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Problems solved by technology

[0004] In order to solve the technical problem in the prior art that the VSC DC converter station transformed by CSC cannot effectively protect against lightning intrusion waves, the present invention provides a method for protecting lightning intrusion waves at a VSC DC converter station, the method include:

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  • A method and apparatus for shielding lightning intrusion waves at a VSC DC converter station
  • A method and apparatus for shielding lightning intrusion waves at a VSC DC converter station
  • A method and apparatus for shielding lightning intrusion waves at a VSC DC converter station

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Embodiment Construction

[0053] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0054] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The invention provides a method and a device for protecting lightning intrusion waves at a VSC DC converter station. The main wiring diagram of the VSC DC converter station, equipment parameters, theconductor and tower are used to calculate the electromagnetic transient model, it is possible to accurately calculate that when a counter-strike and a winding strike occur at the converter station, the overvoltage distribution of lightning intrusion wave on each equipment, and the corresponding protection scheme is proposed according to the calculated overvoltage. The protection scheme includes adjusting the number of lightning arrester posts and the arrangement position of the lightning arrester, etc., which has important application value for improving the lightning protection capability ofthe VSC converter station and optimizing the design level.

Description

technical field [0001] The invention relates to the field of power grid security and protection, and more specifically, to a method and device for protecting against lightning intrusion waves in a VSC DC converter station. Background technique [0002] Traditional direct current transmission, also known as current source converter high-voltage direct current transmission (CSC-HVDC), has become the main power transmission of my country's west-to-east power transmission and north-to-south power transmission by virtue of its advantages in long-distance large-capacity power transmission and grid interconnection. Way. However, because CSC-HVDC uses a semi-controlled power electronic device thyristor as a commutation element, it has obvious shortcomings, mainly as follows: it is completely dependent on the AC grid for operation, there is a problem of commutation failure, and it lacks operational independence. The voltage source converter high-voltage direct current transmission (V...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20Y02E60/60
Inventor 王磊周姣何慧雯娄颖范冕谭波童雪芳李振强李晓岚张波孙泽来郭攀辉
Owner CHINA ELECTRIC POWER RES INST
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