CN101183628A - Fuse device for protection voltage mutual inductor of gas insulation metal closed switchgear - Google Patents
Fuse device for protection voltage mutual inductor of gas insulation metal closed switchgear Download PDFInfo
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- CN101183628A CN101183628A CNA2007101587465A CN200710158746A CN101183628A CN 101183628 A CN101183628 A CN 101183628A CN A2007101587465 A CNA2007101587465 A CN A2007101587465A CN 200710158746 A CN200710158746 A CN 200710158746A CN 101183628 A CN101183628 A CN 101183628A
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- fuse
- gas
- protection
- voltage transformer
- mutual inductor
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Abstract
The invention relates to a fuse apparatus for the protection of a voltage transformer in a gas-insulated metal-enclosed switchgear, which is characterized in that a fuse apparatus to protect a voltage transformer is arranged in a gas box of a gas-insulated metal-enclosed switchgear; the fuse apparatus is composed of an insulating sleeve, a fuse and a replacement components; a plug poured with silicone rubber and epoxy resin is adopted in the enclosed fuse connection of the replacement components; a high-voltage shield ring is arranged in the replacement components and sealed by a metal sealing cover plate. The invention is for the first time applied in middle-voltage field, which solves the problem that the gas-insulated metal-enclosed switchgear is incapable of fuse protection for bus voltage transformer. The invention has the advantages that the fuse is reliably connected with a primary system and at the same time can be fused after the protection action; besides, alarm signals can be sent out; and convenient replacement of fuses is realized without charging or discharging gas in the gas-box.
Description
Affiliated technical field
The present invention relates to a kind of middle Cubicle Gas-Insulated Switchgear of pressing the power transmission and distribution field, especially be applied to 6～35kV electrical power trans mission/distribution system, supporting with Cubicle Gas-Insulated Switchgear, the fuse apparatus of protection system bus-bar potential transformer.
Background technology
At present, Cubicle Gas-Insulated Switchgear, the Cubicle Gas-Insulated Switchgear in pressure power transmission and distribution field in the genus.With regard to this product, ground electrical networks such as Europe, North America all are earth neutral systems, and system's single-phase earthing does not allow operation; And Chinese electrical network is an isolated neutral system, press Chinese DL/T791-2001 standard code: " ... voltage transformer must have the measure that prevents ferro resonance; the high-tension fuse that prevents internal fault should be equipped with in its high-pressure side; the ability of its fuse short circuit current should be complementary with the parameter of inflation cabinet major loop switchgear, and is convenient to change fuse member after the fuse blows." operate in the system with non effectively earth ed neutral, bus-bar potential transformer must add the fuse protection, to prevent burning voltage transformer because of system resonance.Therefore; the Cubicle Gas-Insulated Switchgear that electrical network is used must take front end to install the fuse safeguard measure additional to voltage transformer; and the Cubicle Gas-Insulated Switchgear of using at present is not because its design has the scheme that fuse is protected voltage transformer.
Summary of the invention
In order to solve the shortcoming problem that existing Cubicle Gas-Insulated Switchgear exists; the invention provides a kind of fuse apparatus of protection voltage mutual inductor of gas insulation metal closed switchgear; the present invention is installed on fuse in the gas tank of Cubicle Gas-Insulated Switchgear by a kind of fuse erecting device; reliably be connected with its equipment primary system; simultaneously in fuse protection action back (fusing); this device can be realized the replacing of fuse easily by changing assembly.
The technical solution adopted for the present invention to solve the technical problems is: the fuse apparatus of protection voltage mutual inductor of gas insulation metal closed switchgear, comprise gas tank, voltage transformer, it is characterized in that installing in the gas tank of Cubicle Gas-Insulated Switchgear the fuse apparatus of protection voltage transformer, this fuse apparatus is to be made of insulating sleeve, fuse, replacing assembly; Change the interior shutoff of adopting silicon rubber to mix cast with epoxy resin of fuse closed interface of assembly, change the built-in high-tension shielding ring of assembly, and use metal enclosed cover closure.
The fuse apparatus of this protection voltage mutual inductor of gas insulation metal closed switchgear uses in middle pressure field and to still belong to the first time, and it has solved the problem that Cubicle Gas-Insulated Switchgear can't be realized fuse protection bus-bar potential transformer.Reliably be connected with primary system by the said device of the present invention; simultaneously in fuse protection action back (fusing); can also send alarm signal, can realize the replacing of fuse easily, and the process of changing fuse does not relate to charging and discharging of gas in the gas tank by this device.
Description of drawings
Fig. 1 is a fuse protective device schematic diagram of the present invention;
Fig. 2 is that fuse apparatus is changed the modular construction schematic diagram;
Fig. 3 is the general assembly structural representation of the protection voltage mutual inductor of gas insulation metal closed switchgear of band fuse protective device.
The fuse apparatus of protection voltage mutual inductor of gas insulation metal closed switchgear is by spring 1, fusing Device leading-out terminal 2, insulating sleeve 3, fuse 4, primary system end of incoming cables 5, replacing assembly 6, O-ring seal 7, set bolt 8, fuse closed interface 9, silicon rubber and epoxy resin shutoff 10, high-tension shielding ring 11, Metal enclosed cover plate 12, horizontal bus 13, gas tank 14, voltage transformer 15 form.
The present invention will be further described below in conjunction with drawings and Examples.
As shown in Figure 1, spring (1), fuse (4) is at normal operating condition, this spring is the energy storage state, after fuse blows, open and change assembly (6), this spring can make fuse eject from insulating sleeve (3), and the seal request after guaranteeing this device and gas tank is connected by this rubber sealing (7) makes fuse apparatus fixedly connected with gas tank (14) by bolt (8).The voltage and current of primary system enters by primary system end of incoming cables (5), through overcurrent fuse (4) protection, is connected to voltage transformer (15) by fuse leading-out terminal (2).When the action of fuse protection voltage transformer; fuse blows; when changing fuse; open as long as will change assembly (6), fuse bottom spring is released energy, and fuse ejects automatically; new fuse is reentered into; sealing is changed assembly and is got final product, because fixing pile bolt (8) has good sealing property with gas tank, this operation is carried out fully in the gas tank outside.
As shown in Figure 2, change the fuse closed interface place of assembly (6), adopt silicon rubber to mix the shutoff (10) of cast with epoxy resin, this shutoff front end has certain elasticity, can guarantee to compress connection, built-in high-tension shielding ring (11), and seal with metal enclosed cover plate (12).When fuse (4) is packed in the device of accompanying drawing 1, by this replacing assembly it is fixed, silicon rubber mixes the shutoff (10) of cast with epoxy resin main effect is to make the high voltage of primary system and exterior insulation, after installing high-tension shielding ring (11) additional, can increase the dielectric voltage withstand level of this replacing assembly.
As shown in Figure 3; horizontal bus (13); it is the horizontal bus of a rated voltage; primary system is connected to primary system end of incoming cables (5) by horizontal bus, behind overcurrent fuse (4), is connected to voltage transformer (15) by fuse leading-out terminal (2) again; when system resonance or malfunction; at first fuse blows is about to voltage transformer and isolates outage, plays the effect of protection bus-bar potential transformer.O-ring seal (7), set bolt (8) play connection fuse protective device and gas tank, by O-ring seal (7) the gas tank inwall are compressed with fuse protective device plane and contact the seal request after guaranteeing this device and gas tank being connected.
Embodiment
The fuse apparatus of protection voltage mutual inductor of gas insulation metal closed switchgear is made up of insulating sleeve, fuse and replacing assembly three parts; fuse adopts standardized product; insulating sleeve adopts epoxy resin to cooperate the copper bar moulding by casting; change assembly and adopt silicon rubber to mix cast with epoxy resin, matching fastener is realized the electric insulation and the replacing of fuse.Fuse in this device adopts the standard fuse products of protection bus-bar potential transformer to get final product, general rated current selection 0.2 or 0.5A.The size of insulating sleeve is determined according to the fuse dimensions of different electric pressures.
Install and fixedly the insulating sleeve of fuse adopt poured with epoxy resin, in insulating sleeve, be cast with connection copper bar once, fuse is inserted into behind the insulating sleeve and its tight contact, realizes the charged connection of primary system by being cast in copper bar in the insulating sleeve.This insulating sleeve is seal-installed in the gas tank that is filled with certain pressure gas, and insulating sleeve is that the O-ring seal compression type is connected with the gas tank employing, and the insertion of fuse and extraction are carried out in the gas tank outside.
Claims (2)
1. the fuse apparatus of protection voltage mutual inductor of gas insulation metal closed switchgear, comprise gas tank, voltage transformer, it is characterized in that installing in the gas tank of Cubicle Gas-Insulated Switchgear the fuse apparatus of protection voltage transformer, this fuse apparatus is to be made of insulating sleeve, fuse, replacing assembly;
2. the fuse apparatus of protection voltage mutual inductor of gas insulation metal closed switchgear according to claim 1; it is characterized in that: change the interior shutoff of adopting silicon rubber to mix cast with epoxy resin of fuse closed interface of assembly; change the built-in high-tension shielding ring of assembly, and use metal enclosed cover closure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101587465A CN101183628A (en) | 2007-12-07 | 2007-12-07 | Fuse device for protection voltage mutual inductor of gas insulation metal closed switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101587465A CN101183628A (en) | 2007-12-07 | 2007-12-07 | Fuse device for protection voltage mutual inductor of gas insulation metal closed switchgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101183628A true CN101183628A (en) | 2008-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101587465A Pending CN101183628A (en) | 2007-12-07 | 2007-12-07 | Fuse device for protection voltage mutual inductor of gas insulation metal closed switchgear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101183628A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106249100A (en) * | 2016-08-17 | 2016-12-21 | 云南电网有限责任公司电力科学研究院 | A kind of high-tension fuse ferromagnetic resonance tolerance performance detecting system and method |
| CN107978501A (en) * | 2017-11-28 | 2018-05-01 | 北京双杰电气股份有限公司 | A kind of solid fuse |
-
2007
- 2007-12-07 CN CNA2007101587465A patent/CN101183628A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106249100A (en) * | 2016-08-17 | 2016-12-21 | 云南电网有限责任公司电力科学研究院 | A kind of high-tension fuse ferromagnetic resonance tolerance performance detecting system and method |
| CN106249100B (en) * | 2016-08-17 | 2023-08-01 | 云南电网有限责任公司电力科学研究院 | Ferromagnetic resonance tolerance performance detection system and method for high-voltage fuse |
| CN107978501A (en) * | 2017-11-28 | 2018-05-01 | 北京双杰电气股份有限公司 | A kind of solid fuse |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080521 |