CN201355747Y - Handcart type switch arc blow-out device - Google Patents

Handcart type switch arc blow-out device Download PDF

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Publication number
CN201355747Y
CN201355747Y CNU2009201427973U CN200920142797U CN201355747Y CN 201355747 Y CN201355747 Y CN 201355747Y CN U2009201427973 U CNU2009201427973 U CN U2009201427973U CN 200920142797 U CN200920142797 U CN 200920142797U CN 201355747 Y CN201355747 Y CN 201355747Y
Authority
CN
China
Prior art keywords
handcart
voltage transformer
type switch
circuit breaker
fuse
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CNU2009201427973U
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Chinese (zh)
Inventor
郭庆波
郭耀华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Hekai Power Protection Equipment Co Ltd
Original Assignee
Shanghai Hekai Power Protection Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Hekai Power Protection Equipment Co Ltd filed Critical Shanghai Hekai Power Protection Equipment Co Ltd
Priority to CNU2009201427973U priority Critical patent/CN201355747Y/en
Application granted granted Critical
Publication of CN201355747Y publication Critical patent/CN201355747Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a handcart type switch arc blow-out device, which comprises a housing. A sealed space surrounded by the housing is divided into a bus room, an instrument room, a breaker handcart room and a voltage transformer handcart room by a partition board according to the function of the sealed space, wherein, a vacuum breaker is arranged inside the breaker handcart room; and a voltage transformer with a built-in fuse is arranged inside the voltage transformer handcart room. The utility model adopts a small vacuum breaker which can perform the phase separation control to replace the prior high-voltage current limiting fuse and the prior high-voltage vacuum contactor, as well as the voltage transformer with the built-in fuse, thereby making a space for an over-voltage protector, minimizing the interior space of an arc blow-out device, and achieving the miniaturization of the switch arc blow-out device. Furthermore, the switch arc blow-out device adopts a breaker handcart and a voltage transformer handcart, thereby achieving the exchangeability of the main components, and creating a good condition for improving the repair efficiency and shortening the repair time.

Description

Handcart-type switch arc suppression device
Technical field
The utility model relates to a kind of handcart-type switch arc suppression device.
Background technology
The extinguishing arc harmonic elimination apparatus of using in the present system, hereinafter to be referred as the fuse wire type arc-extinction device, be will with the fault of the vacuum contactor of high-voltage and current-limitation fuse series connection ground connection mutually, extinguishing ground arc and to eliminate the arc grounding overvoltage, thereby avoid becoming the phase fault accident by single-phase arc grounding fault progression.Though vacuum contactor has satisfied the requirement of extinguishing arc harmonic elimination apparatus frequent operation, can not cut-off short circuit current.Because high-voltage and current-limitation fuse need take space in the bigger cabinet, whole extinguishing arc harmonic elimination apparatus can only adopt stationary structure, and the extinguishing arc harmonic elimination apparatus of stationary structure is the big obstacle that the switchgear miniaturization can't be gone beyond.
The KYN28 type switch cabinet of modular construction is commonplace at present; improved the interchangeability of switchgear main element greatly; for raising overhaul efficiency, shortening maintenance interruption duration have been created condition; but because the extinguishing arc harmonic elimination apparatus of fixed structure does not possess interchangeability; when changing high-voltage and current-limitation fuse or maintenance inner member, all need whole extinguishing arc harmonic elimination apparatus is all had a power failure; this has not only increased Field Force's workload, and system may lose the arc grounding protection during this period.In addition, if the user need be transformed into the extinguishing arc harmonic elimination apparatus to the existing PT cabinet in scene, not only on-the-spot retrofit work amount is big, and need all have a power failure whole bus, and this increases the on-the-spot difficulty of transforming greatly.
The utility model content
The purpose of this utility model is to provide a kind of miniaturization handcart-type switch arc suppression device of keeping in repair and changing be convenient to.
For achieving the above object, a kind of handcart-type switch arc suppression device that the utility model provides, comprise shell, dividing plate is divided into bus-bar room, control room, circuit breaker cart chamber and voltage transformer handcart chamber with the enclosure space that shell surrounds by function, the indoor vacuum circuit-breaker that is provided with of circuit breaker cart, the indoor voltage transformer that is provided with built-in fuse of voltage transformer handcart.
But the utility model adopts the vacuum circuit-breaker of small-sized phase-splitting control to replace original high-voltage and current-limitation fuse and high-pressure vacuum contactor; adopt the voltage transformer of built-in fuse; for the layout of overvoltage protection device has been vacateed the space; reduce the inner space of arc-extinction device to greatest extent, realized the miniaturization of arc extinguishing device for switch.In addition, adopt circuit breaker cart and voltage transformer handcart simultaneously, realized the interchangeability of critical piece, for raising overhaul efficiency, shortening repair time have been created good condition.
Description of drawings
Fig. 1 is an electric primary system winding diagram of the present utility model;
Fig. 2 is an internal structure schematic diagram of the present utility model;
Fig. 3 is an external structure schematic diagram of the present utility model.
Embodiment
A kind of handcart-type switch arc suppression device, comprise shell 50, observation window 51 is set on the shell 50 observes the internal operation situation of this device for the user, dividing plate is divided into bus-bar room 10, control room 40, circuit breaker cart chamber 20 and voltage transformer handcart chamber 30 with the enclosure space that shell 50 surrounds by function, bus-bar room 10 is positioned at the rear of shell 50, and the place ahead of shell 50 is arranged control room 40, circuit breaker cart chamber 20 and voltage transformer handcart chamber 30 from top to bottom successively.Vacuum circuit-breaker 21 is set in the circuit breaker cart chamber 20, be provided with the voltage transformer 31 of built-in fuse 33 in the voltage transformer handcart chamber 30, be provided with intelligent controller 41 in the control room 40, control room 40 isolates fully with bus-bar room 10, guaranteed the safety of maintenance, debugging and in-service inspection, as shown in Figure 2.
In conjunction with Fig. 1,2, be provided with three-phase main bus bar 11 in the described bus-bar room 10, three-phase main bus bar 11 is erected between the bus casing 12, and three-phase main bus bar 11 is drawn three branch bars 13 and linked to each other with the upper static contact 23 of circuit breaker cart 22 respectively, and upper static contact 23 is positioned at upper static contact box 24.In the described circuit breaker cart chamber 20 circuit breaker cart 22 is set, 3 vacuum circuit-breakers 21 are installed on the circuit breaker cart 22, the following fixed contact 26 of circuit breaker cart 22 is by ground connection copper bar 16 ground connection, following fixed contact 26 is positioned at fixed contact box 27 down, ground connection copper bar 16 passes from current transformer 15, and this structure can realize non-stable arc grounding fault is converted into stable metallic earthing fast.The secondary side two of current transformer 15 terminates at ground connection behind the ammeter two ends, and ammeter is arranged on the card of panel board, and behind this device action, the user can be by the ammeter more direct steady-state current value of read-out system single phase ground fault.
In conjunction with Fig. 1,2, be provided with voltage transformer handcart 32 in the described voltage transformer handcart chamber 30, power supply introducing for fear of voltage transformer 31 is subjected to the restriction of circuit breaker cart 22 positions, 3 fixed contacts 35 of voltage transformer handcart 32 are connected on respectively on three branch bars 13 by cable 17, cable 17 passes in wall bushing 14, fixed contact 35 is positioned at fixed contact box 36,3 moving contacts 37 of voltage transformer handcart 32 link to each other with the input of 3 fuses 33 respectively, fuse 33 is arranged in the outlet sleeve pipe 34 of voltage transformer 31, the output of fuse 33 links to each other with the input of voltage transformer 31, the other end ground connection of voltage transformer 31.Voltage transformer handcart 32 has designed 3 moving contacts 37, these 3 moving contacts 37 are supported by the outlet sleeve pipe 34 of 3 voltage transformers 31 respectively, with the outlet sleeve pipe 34 of voltage transformer 31 support component, make the project organization of voltage transformer handcart 32 simpler, compact as voltage transformer handcart 32 moving contacts 37.Circuit breaker cart 22 and voltage transformer handcart 32 are set simultaneously, on the one hand, when maintenance,, just can change or overhaul the inner member of the two quickly and easily as long as circuit breaker cart 22 or voltage transformer handcart 32 are pulled out; On the other hand, realized the interchangeability of critical piece, for raising overhaul efficiency, shortening repair time have been created good condition.
In conjunction with Fig. 1,2, the input of described overvoltage protection device 38 is connected on the input of fuse 33, the output head grounding of overvoltage protection device 38, and overvoltage protection device 28 is positioned at.The below of voltage transformer 31.Overvoltage protection device 38 comprises the zinc oxide valve plate FR that four head ends join; wherein the tail end of first, second and third zinc oxide valve plate FR1, FR2, FR3 is connected respectively and is connected on the input of fuse 33 behind first, second and third discharging gap CG1, CG2, the CG3, the tail end of the 4th zinc oxide valve plate FR4 ground connection behind the 4th discharging gap CG4 of connecting.
Below in conjunction with Fig. 1,2,3 the utility model will be further described.
When system's generation single phase ground fault, vacuum circuit-breaker 21 can move about 15ms, with the direct mutually ground connection of fault.If single-phase arc grounding fault takes place, then can extinguish ground arc rapidly and the arc grounding overvoltage is stablized the level of on-Line Voltage, can effectively avoid the phase fault accident that causes because of arc grounding and accidents such as the ferro resonance that causes because of the arc grounding overvoltage and Explosion of on Arrester; If the metallic earthing fault takes place, then can reduce touch voltage and step voltage greatly, help support equipment and personal safety.
When voltage transformer 31 disconnection faults took place, intelligent controller 41 output switching value contact point signals were so that the user is to carrying out locking because of voltage transformer disconnection causes the relaying protection of misoperation.Send alarm signal simultaneously, the panel of intelligent controller 41 shows fault type (voltage transformer disconnection, fault earthing) and separate, output passive switch amount contact point signal.In addition, this device has the emergency review function, can write down the time of 18 fault generations and the type of fault.This device has also disposed the RS485 interface, can carry out data according to the communication protocol that the user provides and transmit.Voltage transformer 31 in this device can provide signal to measuring instrument and relaying protection, can replace conventional PT cabinet.
In a word, but core of the present utility model is to adopt the Fast Speed Vacuum Circuit Breaker 21 of small-sized phase-splitting control as the extinguishing arc execution unit, replace original high-voltage and current-limitation fuse and high-pressure vacuum contactor, reduced taking up room of extinguishing arc execution unit greatly, not only can be implemented in about 15ms fast extinguish arcs and cut-off the line to line fault electric current about 5ms, the extinguishing arc execution unit is arranged on the circuit breaker cart 22 of KYN28 type switch cabinet becomes possibility.Adopt the voltage transformer 31 of built-in fuse 33 simultaneously, for the layout of overvoltage protection device 38 has been vacateed the space.

Claims (8)

1, a kind of handcart-type switch arc suppression device, comprise shell (50), it is characterized in that: dividing plate is divided into bus-bar room (10), control room (40), circuit breaker cart chamber (20) and voltage transformer handcart chamber (30) with the enclosure space that shell (50) surrounds by function, vacuum circuit-breaker (21) is set in the circuit breaker cart chamber (20), is provided with the voltage transformer (31) of built-in fuse (33) in the voltage transformer handcart chamber (30).
2, handcart-type switch arc suppression device according to claim 1, it is characterized in that: described bus-bar room (10) is positioned at the rear of shell (50), and the place ahead of shell (50) is arranged control room (40), circuit breaker cart chamber (20) and voltage transformer handcart chamber (30) from top to bottom successively.
3, handcart-type switch arc suppression device according to claim 1 and 2, it is characterized in that: be provided with three-phase main bus bar (11) in the described bus-bar room (10), three-phase main bus bar (11) is erected between the bus casing (12), three-phase main bus bar (11) is drawn three branch bars (13) and is linked to each other with the upper static contact (23) of circuit breaker cart (22) respectively, and upper static contact (23) is positioned at upper static contact box (24).
4, handcart-type switch arc suppression device according to claim 1 and 2, it is characterized in that: be provided with circuit breaker cart (22) in the described circuit breaker cart chamber (20), circuit breaker cart (22) is gone up 3 vacuum circuit-breakers (21) is installed, the following fixed contact (26) of circuit breaker cart (22) is by ground connection copper bar (16) ground connection, following fixed contact (26) is positioned at fixed contact box (27) down, ground connection copper bar (16) passes from current transformer (15), the secondary side two of current transformer (15) terminates at ground connection behind the ammeter two ends, and ammeter is arranged on the card of panel board.
5, handcart-type switch arc suppression device according to claim 1 and 2, it is characterized in that: be provided with voltage transformer handcart (32) in the described voltage transformer handcart chamber (30), 3 fixed contacts (35) of voltage transformer handcart (32) are connected on respectively on three branch bars (13) by cable (17), fixed contact (35) is positioned at fixed contact box (36), 3 moving contacts (37) of voltage transformer handcart (32) link to each other with the input of 3 fuses (33) respectively, fuse (33) is arranged in the outlet sleeve pipe (34) of voltage transformer (31), the output of fuse (33) links to each other with the input of voltage transformer (31), the other end ground connection of voltage transformer (31).
6, handcart-type switch arc suppression device according to claim 1 is characterized in that: be provided with intelligent controller (41) in described control room (40).
7, handcart-type switch arc suppression device according to claim 5 is characterized in that: the input of overvoltage protection device (38) is connected on the input of fuse (33), the output head grounding of overvoltage protection device (38).
8, handcart-type switch arc suppression device according to claim 7; it is characterized in that: described overvoltage protection device (38) comprises the zinc oxide valve plate FR that four head ends join; wherein the tail end of first, second and third zinc oxide valve plate FR1, FR2, FR3 is connected respectively and is connected on the input of fuse (33) behind first, second and third discharging gap CG1, CG2, the CG3, the tail end of the 4th zinc oxide valve plate FR4 ground connection behind the 4th discharging gap CG4 of connecting.
CNU2009201427973U 2009-01-20 2009-01-20 Handcart type switch arc blow-out device Expired - Lifetime CN201355747Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2009201427973U CN201355747Y (en) 2009-01-20 2009-01-20 Handcart type switch arc blow-out device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2009201427973U CN201355747Y (en) 2009-01-20 2009-01-20 Handcart type switch arc blow-out device

Publications (1)

Publication Number Publication Date
CN201355747Y true CN201355747Y (en) 2009-12-02

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CNU2009201427973U Expired - Lifetime CN201355747Y (en) 2009-01-20 2009-01-20 Handcart type switch arc blow-out device

Country Status (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101557083B (en) * 2009-01-20 2011-09-07 上海合凯电力保护设备有限公司 Handcart-type switch arc suppression device
CN107171277A (en) * 2017-07-03 2017-09-15 安徽恒凯电力保护设备有限公司 A kind of zero loss depth current-limiting protection device that technology is cut-off based on Mintrop wave
CN109802325A (en) * 2017-11-17 2019-05-24 伊顿智能动力有限公司 For reducing the device of the fault electric arc in power distribution unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101557083B (en) * 2009-01-20 2011-09-07 上海合凯电力保护设备有限公司 Handcart-type switch arc suppression device
CN107171277A (en) * 2017-07-03 2017-09-15 安徽恒凯电力保护设备有限公司 A kind of zero loss depth current-limiting protection device that technology is cut-off based on Mintrop wave
CN109802325A (en) * 2017-11-17 2019-05-24 伊顿智能动力有限公司 For reducing the device of the fault electric arc in power distribution unit

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20091202

Effective date of abandoning: 20090120