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Adaptive discrimination method and apparatus for valve block last breaker of extra-high-voltage converter station

A final circuit breaker and discrimination method technology, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve problems such as the complexity of the final circuit breaker logic, and achieve the effects of avoiding operational risks, saving manpower and material resources, and huge economic benefits

Active Publication Date: 2016-04-20
XJ ELECTRIC +2
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Problems solved by technology

[0005] The purpose of the present invention is to provide an adaptive judgment method and device for the final circuit breaker of the UHV converter station valve group, to solve the problem that the logic of the final circuit breaker is too complicated in the construction of future strings, future intervals or phases

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  • Adaptive discrimination method and apparatus for valve block last breaker of extra-high-voltage converter station
  • Adaptive discrimination method and apparatus for valve block last breaker of extra-high-voltage converter station
  • Adaptive discrimination method and apparatus for valve block last breaker of extra-high-voltage converter station

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Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0033] The basic scheme of the present invention is: an adaptive discrimination method for the final circuit breaker of the UHV converter station valve group, the steps are as follows:

[0034] 1) If the line and the valve group are in the same string, the path is divided into two types: the first path is the path passing through the intermediate circuit breaker of the 3 / 2 wiring of the string, and the second path is the path passing through other strings;

[0035] If the line and the valve group are not in the same string, the paths are divided into four types: the first path and the second path are different paths that only pass through the two strings where the line and the valve group are located;

[0036] 2) If both the first path and the second path can be conducted, the valve group has no final circuit breaker; If the path can be turned on, then incre...

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Abstract

The invention relates to an adaptive discrimination method and apparatus for a valve block last breaker of an extra-high-voltage converter station. The method comprises: if a first kind of path and a second kind of path can be connected, no last breaker exists in a valve group; if any of the first kind of path and the second kind of path can not be connected, paths between the line and the valve group are traversed; if any of the first kind of path and the second kind of path can be connected, count values are increased for all breakers of the path; and the breaker with the largest count value is determined to be the last breaker. The adaptive discrimination function of the valve block last breaker in the extra-high-voltage direct-current power transmission project is realized; and a phenomenon that the logic of the valve block last breaker is not correct when the alternating-current intervals are connected step by step, alternating-current strings are connected step by step, or, alternating-current incoming wires are connected step by step at the alternating-current field can be avoided effectively.

Description

technical field [0001] The invention relates to an adaptive discrimination method for the final circuit breaker of a valve group of an ultra-high voltage converter station. Background technique [0002] The tripping device of the final circuit breaker in the inverter station of the high-voltage direct current transmission system is a very important DC system control device in the converter station. Voltage, resulting in AC and DC equipment insulation damage. [0003] The AC field of the UHV DC project is divided into a double busbar structure, and the AC field is divided into a double busbar structure (1M and 2M), and the double busbars are composed of multiple strings of 3 / 2 wiring. Generally, in the early stage of converter station construction, some AC strings or line intervals are designed for future expansion, and there is no actual wiring for future strings or future intervals. The program must consider that when future strings or intervals are gradually added, the l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/122
CPCH02H7/122
Inventor 戴国安王柏恒郭华吴东崛王绍划肖红帅
Owner XJ ELECTRIC
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