Dry-type hollow current-limiting reactor device

A current-limiting reactor and reactor technology, applied in circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, emergency protection circuit devices, etc., can solve the problem that the circuit breaker cannot be turned off and the system cannot be safe and stable Operation and other issues

Inactive Publication Date: 2016-06-15
BEIJING POWER EQUIP GRP
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Problems solved by technology

[0008] The purpose of the present invention is to provide a dry-type air-core current-limiting reactor device to solve the problem that the circuit breaker cannot be turned off due to the excessive short-circuit current in the high-voltage and ultra-high-voltage systems in the prior art, and the system cannot run safely and stably. The problem

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  • Dry-type hollow current-limiting reactor device
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  • Dry-type hollow current-limiting reactor device

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] Embodiments of the present invention are preferably applied to 750kV power systems, that is, figure 1 The illustrated embodiment is a schematic structural diagram of a 750kV dry-type air-core current-limiting reactor device, which is connected in series to the busbar or line side of the 750kV power system.

[0029] Such as figure 1 As shown, this embodiment includes a reactor system 1 , a capacitor system 2 , an arrester system 3 , and connecting wires 4 . Reactor system 1 , capacitor system 2 , and lightning arrester system 3 are connected in parallel by connection wire 4 . The electric field shield provided by the reactor system is called the reactor electric field shield, the electric field shield provided by the capacitor system is called the capacitor electric field shield, and the electric field shield provided by the a...

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Abstract

The invention provides a dry-type hollow current-limiting reactor device. The dry-type hollow current-limiting reactor device comprises a reactor system, a capacitor system and a lightning arrester system and is characterized that the reactor system, the capacitor system and the lightning arrester system are connected in parallel through connection wires, and the reactor system, the capacitor system and the lightning arrester system are all provided with electric field shielding elements. In the dry-type hollow current-limiting reactor device, the reactor system, the capacitor system and the lightning arrester system are connected in parallel respectively through the connection wires and are all provided with the electric field shielding elements, thus, the problem of over high local field intensity of a reactor main body and auxiliaries is solved, and the dry-type hollow current-limiting reactor device can meet the requirements of a power grid of 750V and the like for voltage and current distribution, insulation level and short-circuit current.

Description

technical field [0001] The invention relates to the technical field of transformer protection equipment, in particular to a dry-type air-core current-limiting reactor device. Background technique [0002] With the rapid development of the power grid, the level of short-circuit current continues to increase, and the situation that the short-circuit current exceeds the breaking current of the circuit breaker has often been foreseen. If effective measures are not taken, the ensuing consequences will be more serious. The most direct and effective measure is to replace all circuit breakers with circuit breakers with larger breaking current. However, due to manufacturing costs and technical difficulties, this is obviously difficult to achieve. [0003] According to the current ultra-high voltage circuit breaker manufacturing technology, the limit short-circuit breaking current of the circuit breaker is 63kA. For this reason, the maximum short-circuit current of the 750kV system...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/02H02H9/04
CPCH02H9/021H02H9/044
Inventor 张月华赵杨蒋观平成阳张德金陈妍岳阳徐立尧张俊陈意龙郭嘉
Owner BEIJING POWER EQUIP GRP
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