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An ultra-high voltage gis fast transient overvoltage suppression system

A transient overvoltage and ultra-high voltage technology, which is applied to emergency protection circuit devices, electrical components, and circuit devices for limiting overcurrent/overvoltage, and can solve problems such as poor fast transient overvoltage suppression effect.

Active Publication Date: 2018-03-27
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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Problems solved by technology

[0004] The invention provides an ultra-high voltage GIS fast transient overvoltage suppression system to solve the technical problem that the prior art has poor suppression effect on fast transient overvoltage in GIS

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  • An ultra-high voltage gis fast transient overvoltage suppression system

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Embodiment Construction

[0021] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of means consistent with aspects of the invention as recited in the appended claims.

[0022] Please refer to figure 1 , which is a schematic structural diagram of an ultra-high voltage GIS fast transient overvoltage suppression system provided in an embodiment of the present invention.

[0023] Depend on figure 1 It can be seen that the present invention provides an ultra-high voltage GIS fast transient overvoltage suppression system, including: a metal tank body 1, the metal tank body 1 is inte...

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Abstract

The invention provides an ultra-high-voltage GIS rapid transient overvoltage suppression system. The system comprises a metal tank, the inner part of the metal tank is provided with an isolation gap and unit modules connected with the isolation gap, the unit modules comprise resistors, capacitors, and metal bolts, and the resistors are connected with the capacitors via the metal bolts. According to the system, the inner part of the metal tank is provided with the isolation gap and the unit modules, when rapid transient overvoltage of GIS equipment does not occur, capacitive reactance of the isolation gap is high, a transient overvoltage suppression device can be regarded as an open circuit, and normal operation of the GIS is guaranteed; when rapid transient overvoltage of the GIS equipment occurs, the equivalent frequency of the transient overvoltage is high, the capacitive reactance of the isolation gap is low, the device can be regarded as a large load, and energy of rapid transient overvoltage in the GIS is consumed via the resistors so that the amplitude of the transient overvoltage is obviously reduced, and the technical problem of poor suppression effect of rapid transient overvoltage in the GIS in the prior art can be solved.

Description

technical field [0001] The invention relates to the technical field of electric equipment overvoltage protection, in particular to an ultra-high voltage GIS fast transient overvoltage suppression system. Background technique [0002] With the rapid growth of grid load, UHV power transmission has become an inevitable trend of my country's power grid construction. UHV GIS is widely used because of its good insulation performance, small footprint, safe operation, and convenient maintenance. When the isolation switch in GIS operates or fails, fast transient overvoltage (VFTO) will be generated inside it, which poses a great threat to the internal insulation components of GIS. Therefore, it is of great significance to suppress the fast transient overvoltage in GIS. [0003] At present, the suppression devices for fast transient overvoltage in GIS are mainly traditional magnetic rings, lightning arresters and other equipment. The effect of traditional equipment on the suppression...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H9/04
Inventor 谭向宇马仪王科彭晶钱国超邹德旭徐肖伟周仿荣李昊
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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