High-voltage direct-current power transmission TTM board card fault positioning system and fault positioning method thereof
A high-voltage direct current transmission and fault location technology, applied in fault location, fault detection by conductor type, etc., can solve problems such as the inability to track key signal nodes of TTM boards, save power outage maintenance time, optimize and upgrade, and improve maintenance efficiency Effect
Active Publication Date: 2017-05-10
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +2
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Problems solved by technology
[0004] In order to solve the deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a high-voltage direct current transmission TTM board fault location system and its fault location method to solve the problem of interference in the strong electromagnetic field in the high-voltage direct current transmission field in the converter valve body. Under the working conditions, it is impossible to track the key signal nodes of the TTM board within the fault interval
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[0024] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0025] The following description and drawings illustrate specific embodiments of the invention sufficiently to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of embodiments of the present invention includes the full scope of the claims, and all available equivalents of the claims. These embodiments of the present invention may be referred to herein, individually or collectively, by the term "invention", which is for convenience only and is not...
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The invention relates to a high-voltage direct-current power transmission TTM board card fault positioning system and fault positioning method thereof. The system includes a wave recording monitoring system, a VBE and a valve module which are connected in sequence, a thyristor triggering monitoring unit TTM board card in the valve module collects and processes a node signal that a converter valve needs to monitor, soon afterwards a processing judgment signal is transmitted to a signal collection communication board, and the signal is stored in a storage chip of the signal collection communication board; when a triggering monitoring case of the VBE detects that the TTM board card of a certain stage or multistage thyristor sends an overvoltage protection return pulse, energy taking return pulse disappears or the signal collection communication board detects a key signal abnormality of itself, wave recording is automatically started or wave recording is started in a manual mode; and a fault recording device performs fault positioning. The high-voltage direct-current power transmission TTM board card fault positioning system provided by the invention solves the problem that in a high-voltage direct-current power transmission converter valve body, under the working condition of strong electromagnetic field interference, tracking of a TTM board card key signal node cannot be realized in a fault section.
Description
technical field [0001] The invention relates to a fault location method in the technical field of ultra-high voltage direct current transmission, in particular to a high voltage direct current transmission TTM board fault location system and a fault location method thereof. Background technique [0002] The TTM board is the core control and protection unit for the converter valve to realize AC-DC power conversion, and its operation reliability directly affects the safety and stability of the converter valve and even the entire DC transmission project. When the key signal in the TTM board is abnormal or the VBE detects a thyristor failure or overvoltage protection action, the key signal of the TTM board will have obvious abnormal parameters. In high-voltage direct current transmission, the TTM board is installed in the converter valve body. Under the normal working condition of the converter valve, the TTM board is in the environment of strong electromagnetic field interferen...
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Login to view more IPC IPC(8): G01R31/08
CPCG01R31/081
Inventor 王华锋査鲲鹏魏晓光郑林王斌泽马浩宇林志光杨树森杨霞玉吴文祥刘近彭玲
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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