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Plasma series compensation gap system

A plasma and plasma generator technology, which is applied in the field of ion series compensation gap system, can solve the problems of uneven partial pressure of two arcing gaps, self-triggering voltage lower than design value, complex spark gap structure, etc., so as to improve electromagnetic reactance. Interference, elimination of component failure rate, effect of simplified structure

Active Publication Date: 2015-09-16
CHINA SOUTHERN POWER GRID EHV POWER TRANSMISSION COMPANY WUZHOU BUREAU +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the complex structure of the spark gap, it is greatly affected by the stray capacitance to the ground, resulting in uneven voltage division between the two arcing gaps, and the self-triggering voltage is seriously lower than the design value
The electromagnetic environment inside the interstitial room is complex, and the equipment is affected by electromagnetic interference, which leads to frequent failures

Method used

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Embodiment 1

[0023] see figure 1 , is a connection block diagram of Embodiment 1 of a plasma series compensation gap system of the present invention. The plasma series compensation gap system of this embodiment is used to protect the series compensation capacitor Ctag connected in series on the three-phase line of the high-voltage transmission line, that is, every The phase line configuration has a series compensation capacitor Ctag. The series compensation capacitor Ctag includes one or two parallel capacitor banks in series. In this embodiment, two sets of capacitor banks in series are preferably used to connect a set of plasma series compensation gap systems, and the second plasma gap system is used as a backup system. The two sets of series capacitor banks are the first series capacitor bank CtagA and the second series capacitor bank CtagB, and the series compensation capacitor Ctag also includes a metal oxide voltage limiter MOV connected in parallel at both ends of the above series c...

Embodiment 2

[0052] see Figure 4 , is the connection block diagram of Embodiment 2 of the dual-ignition plasma series compensation gap system of the present invention.

[0053]Embodiment 2 of the present invention, on the basis of the gap trigger device 100 and the plasma gap device 200 of the above-mentioned embodiment 1, also includes a laser power supply device 300 and a series compensation protection device 400, and the laser power supply device 300 is used for Provide laser energy to the gap trigger controller 101. In this embodiment, two energy supply optical fibers are used as energy supply lines, and the two optical fibers are used as backups for each other to improve system reliability. As another embodiment, only One energy supply optical fiber, or two or more energy supply optical fibers, using laser energy to replace the energy supply mode of cables and inductance coils, can avoid the electromagnetic interference introduced by cables, thereby reducing the probability of damage...

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Abstract

The present invention discloses a plasma series compensation gap system which is used for protecting a series compensation capacitor connected in series to a high-voltage power transmission line and metal oxide varistors connected in parallel to both ends of the series compensation capacitor. A plasma gap apparatus comprises a gap connected in parallel to the series compensation capacitor and a plasma generator for triggering a gap action; and a gap trigger apparatus is used for receiving energy which is externally supplied and outputting a pulse voltage to the plasma generator so as to trigger the gap action. The gap action is triggered by the plasma generator, so that setting of a wide gap can be realized and false triggering of the gap is effectively reduced; and multiple ignition loops are adopted, so that reliability of gap triggering can be reinforced. A laser energy supply mode is adopted, so that influence of electromagnetic shielding is reduced.

Description

technical field [0001] The invention relates to the field of power transmission, in particular to a plasma series compensation gap system. Background technique [0002] The series compensation device is used on the high-voltage transmission line to improve the stable transmission capacity of the system. The series compensation device is also called series compensation. The series capacitor on the high-voltage transmission line is used to offset the influence of the line inductance, thereby improving the electrical parameters of the line and realizing the transmission of two lines. The power of the three lines not only improves the transmission power but also saves investment and maintenance costs. The gap is the core device of the series compensation, which can effectively protect the metal oxide voltage limiter (MOV) and the series compensation capacitor from overvoltage damage. [0003] There are two types of gaps for high voltage series compensation: graphite gap and pla...

Claims

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Application Information

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IPC IPC(8): H02H9/04
Inventor 温才权王德昌宋永佳张子敬
Owner CHINA SOUTHERN POWER GRID EHV POWER TRANSMISSION COMPANY WUZHOU BUREAU
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