CN201229891Y - Intelligent high voltage dual power supply converting switch - Google Patents

Intelligent high voltage dual power supply converting switch Download PDF

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Publication number
CN201229891Y
CN201229891Y CNU2008200851704U CN200820085170U CN201229891Y CN 201229891 Y CN201229891 Y CN 201229891Y CN U2008200851704 U CNU2008200851704 U CN U2008200851704U CN 200820085170 U CN200820085170 U CN 200820085170U CN 201229891 Y CN201229891 Y CN 201229891Y
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CN
China
Prior art keywords
contact
switching
power supply
contact knife
intelligent high
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Expired - Fee Related
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CNU2008200851704U
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Chinese (zh)
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黄勤飞
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Individual
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Individual
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

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  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Abstract

The utility model discloses an intelligent high-voltage double power change-over switch, comprising an air-tight box, three main power terminals, three standby power terminals, three load terminals arranged on an air-tight box body and a power switching mechanism arranged in the air-tight box. The utility model is characterized in that the switch also comprises a three-phase vacuum circuit breaker device which comprises three vacuum arc extinguish chambers, three moving contacts, three static contacts and an operating mechanism; all the movable contacts and static contacts are electrically connected with the corresponding main power terminal and standby power terminal by the power switching mechanism; and all the static contacts and moving contacts are electrically connected with the corresponding load terminal. The utility model has the advantages of simple structure, lower cost and being capable of eliminating potential safety hazards effectively.

Description

A kind of intelligent high-voltage dual power conversion switch
Technical field
The utility model belongs to high-voltage electrical apparatus switching technique field, is specifically related to a kind of intelligent high-voltage dual power conversion switch.
Background technology
At present, in order to improve the reliability of power supply, a large amount of dual power supply circuits (two supply line generally is a circuit on power system, and from reserve line) that adopt in the electric power system are when a line power breaks down, by another line powering.Need by control device, indoor will the employing is no less than two high-tension switch cabinets for this reason, and the open air is no less than high-voltage switch gear on two important actors, could realize selecting the requirement of supply line.This control mode has not only increased user's equipment and operating cost, but also the accident of power supply hidden danger that lies dormant.High-voltage switch gear on two and the above high-tension switch cabinet/post is difficult to realize the mechanical chain between the high-voltage switch gear on high-tension switch cabinet/post.It is generally acknowledged that the electrical interlocks that control device is only arranged is insecure,, will lead to major accident in case duplicate supply feed simultaneously all might appear in control device fault or operations staff's misoperation.
Also have at present to adopt and on vacuum circuit-breaker, install the high-voltage dual power conversion equipment that double-throw disconnecting switch is formed additional, though this kind mode has realized high-voltage dual power and has had electrical interlocks and mechanical chain when automaticallying switch, reduced the two-way high pressure possibility of feed simultaneously, it is present more satisfactory high-voltage dual power switching device shifter, but also there is drawback, the isolating switch of its double-throw is directly exposed in the air, along with number of times that uses and the increase of time, the continuous oxidation of contact surface meeting, cause contact resistance to increase conductive capability and reduce, contact heating easily such as burns out at shortcoming.In addition, owing to be to adopt isolating switch to switch actuator, because electric power in use is sternly to forbid the on-load branch, close isolating switch as power supply; So could use isolating switch to finish switching motion after must making the vacuum circuit-breaker separating brake cut off load earlier by controller before each the switching.In case controller breaks down, under the situation that does not disconnect vacuum circuit-breaker, the isolating switch on-load just carries out switching motion, and powerful load instantaneous outage voltage can be easily with air breakdown, cause arc short-circuit, cause accidents such as personnel's equipment damage and line powering fault.
The utility model content
The purpose of this utility model provide a kind of simple in structure, cost is lower and the intelligent high-voltage dual power conversion switch that can effectively eliminate safe hidden trouble.
The technical scheme that realizes the utility model purpose is: a kind of intelligent high-voltage dual power conversion switch, comprise pressure box, be arranged on three main power source binding posts on the pressure box casing, three stand-by power supply binding posts and three load wiring posts, and be arranged on the power supply switching mechanism in the pressure box; Its design feature is: this switch also comprises a three-phase vacuum breaker device, and described three-phase vacuum breaker device comprises three vacuum interrupters, three moving contacts, three fixed contacts and an operating mechanism; Described each moving contact/fixed contact is electrically connected with a corresponding main power source binding post/stand-by power supply binding post by the power supply switching mechanism, and described each fixed contact/moving contact is electrically connected with a corresponding load wiring post.
In the technique scheme, the outer surface of the fixed contact of described each vacuum circuit-breaker is provided with insulated column, and is arranged on the box outer surface directly as the load wiring post.
In the technique scheme, described operating mechanism comprises driving main shaft and the drive rod that is used to be connected driving main shaft and moving contact.
In the technique scheme, described power supply switching mechanism comprises a switching main shaft, can be switched that main shaft drives and three switching contact knifes turning an angle.
In the technique scheme, described each switching contact knife is the V-type contact knife, and described switching mechanism also comprises and being used for as the contact knife rotating shaft of each V-type contact knife rotary middle spindle and the insulated tension pole that is used to connect switching main shaft and each V-type contact knife.
In the technique scheme, described each switching contact knife is the yi word pattern contact knife, and described each switching contact knife is fixed on and switches on the main shaft.
In the technique scheme, be filled with sulfur hexafluoride gas in the described pressure box.
In the technique scheme, be provided with in the described pressure box and be used for the metal runners that is electrically connected with the moving contact/fixed contact of vacuum circuit-breaker, each switching contact knife in the described power supply switching mechanism all has along switching symmetrically arranged two the contact knife arms in spindle axis center, the contact knife arm of one side is used for being electrically connected with main power source binding post or stand-by power supply binding post, and the contact knife arm of opposite side can slide on described metal runners.
The utlity model has positive effect:
(1) the utility model can effectively be protected circuit and power supply switching mechanism in the duplicate supply conversion by adding vacuum circuit-breaker, effectively eliminates safe hidden trouble, and prolongs its electric life.(2) be filled with sulfur hexafluoride gas in the pressure box of the present utility model, have arc quenching effect preferably, effectively guarantee the electric life of switching contact knife and power-line terminal.(3) the utility model is compared with the high-voltage alternating three-phase double power-supply load swith of Chinese patent 200510061855.6 disclosed a kind of sulphur hexafluoride formulas, reduced by a switching main shaft, by three the switching contact knifes and the mechanical interlocking device of this switching main shaft, simplified its structure greatly; Even the utility model product is damaged for some reason in addition, owing to only have one group of switching contact knife, and can only be electrically connected with one group of power-line terminal at most, so the duplicate supply accident of feed simultaneously can not take place, effectively eliminate safe hidden trouble.(4) the utility model also can be realized overload, overvoltage, phase shortage and three-phase imbalance protection by additional conventional current transformer, voltage transformer, zero-sequence transformer and control circuit, effectively ensures the safe handling of load appliance.
Description of drawings
Fig. 1 is the structural representation of first kind of structure of the utility model;
Fig. 2 is the structural representation of second kind of structure of the utility model;
Fig. 3 is the structural representation of the third structure of the utility model;
Fig. 4 is the structural representation of intelligent high-voltage dual power conversion switch shown in Figure 3 when being in the main power source power supply state.
Reference numeral is: draw together pressure box 1, casing 11, main power source binding post 2, stand-by power supply binding post 3, load wiring post 4, power supply switching mechanism 5 switches main shaft 51, switching contact knife 52, contact knife arm 521, contact knife arm 522, contact knife rotating shaft 53, insulated tension pole 54, three-phase vacuum breaker device 6, vacuum interrupter 61, moving contact 62, fixed contact 63, insulated column 631, operating mechanism 64, driving main shaft 641, drive rod 642, metal runners 8.
Embodiment
(embodiment 1)
Fig. 1 is the structural representation of first kind of structure of the utility model, has shown first kind of embodiment of the present utility model.
Present embodiment is a kind of intelligent high-voltage dual power conversion switch, see Fig. 1, comprise pressure box 1, be arranged on three the main power source binding posts 2 on the pressure box casing 11, three stand-by power supply binding posts 3 and three load wiring posts 4, and be arranged on the power supply switching mechanism 5 in the pressure box 1; It is characterized in that: this switch also comprises a three-phase vacuum breaker device 6, described three-phase vacuum breaker device 6 comprises three vacuum interrupters 61, three moving contacts 62, three fixed contacts 63 and operating mechanisms 64, described each moving contact 62/ fixed contact 63 is electrically connected with a corresponding switching contact knife 6, and described each fixed contact 63/ moving contact 62 is electrically connected with a corresponding load wiring post 4.The outer surface of the fixed contact 63 of described each vacuum circuit-breaker is provided with insulated column 631, and is arranged on casing 11 outer surfaces directly as load wiring post 4.Described operating mechanism 64 comprises driving main shaft 641 and the drive rod 642 that is used to be connected driving main shaft 641 and moving contact 62.Described power supply switching mechanism 5 comprises a switching main shaft 51, can be switched that main shaft 51 drives and three switching contact knifes 52 turning an angle, and described each switching contact knife 52 is yi word pattern contact knifes, and described each switching contact knife 52 is fixed on and switches on the main shaft 51.Be filled with sulfur hexafluoride gas in the described pressure box 1.
(embodiment 2)
Fig. 2 is the structural representation of second kind of structure of the utility model, has shown second kind of embodiment of the present utility model.
Present embodiment is substantially the same manner as Example 1, difference is: see Fig. 2, described each switching contact knife 52 is V-type contact knifes, and described switching mechanism 5 also comprises and being used for as the contact knife rotating shaft 53 of each V-type contact knife rotary middle spindle and the insulated tension pole 54 that is used to connect switching main shaft 51 and each V-type contact knife.
Common V-type contact knife has " three stations " and " two stations " two kinds, described " three stations " V-type contact knife is meant on first station that contact knife 52 can rest on main power source binding post 2 is electrically connected, with on second station that stand-by power supply binding post 3 is electrically connected and be positioned at main power source binding post 2 hit exactly with stand-by power supply binding post 3, neither be electrically connected with main power source binding post 2, also not with the 3rd station that stand-by power supply binding post 3 is electrically connected on the V-type contact knife of (being position shown in Figure 5).Described " two stations " is meant and can only rests on foregoing first station and second station, can not rest on the V-type contact knife of the switching mechanism on the 3rd station.Present embodiment is a kind of three station V-type contact knifes, in concrete practice, also can adopt two station V-type contact knifes certainly.Described each V-arrangement contact knife 52 directly is electrically connected with a corresponding load wiring post 4.
(embodiment 3)
Fig. 3 and Fig. 4 have shown the third embodiment of the present utility model, and wherein Fig. 3 is the structural representation of the third structure of the utility model, and Fig. 4 is the structural representation of intelligent high-voltage dual power conversion switch shown in Figure 3 when being in the main power source power supply state.
Present embodiment is substantially the same manner as Example 1, difference is: see Fig. 3 and Fig. 4, pressure box 1 in the present embodiment and the power supply switching mechanism 5 that is arranged in the pressure box 1 are different with embodiment 1 on shape and structure, the basic configuration of pressure box 1 casing of present embodiment is similar to circle, be provided with in the described pressure box 1 and be used for the metal runners 8 that is electrically connected with moving contact 62/ fixed contact 63 of vacuum circuit-breaker 6, each switching contact knife 52 in the described power supply switching mechanism 5 all has along switching symmetrically arranged two the contact knife arms in center, main shaft 51 axle center, the contact knife arm 521 of one side is used for being electrically connected with main power source binding post 2 or stand-by power supply binding post 3, the contact knife arm 522 of opposite side slides on described metal runners 8, is used to realize that the free of discontinuities with metal runners 8 is electrically connected.Adopt the structural design of present embodiment, can do volume forr a short time.
Embodiment 1 to embodiment 3 has positive technique effect:
(1) by adding vacuum circuit-breaker, in the duplicate supply conversion, can effectively protect, effectively eliminate safe hidden trouble, prolong its electric life circuit and power supply switching mechanism.(2) be filled with sulfur hexafluoride gas in the pressure box, have arc quenching effect preferably, effectively guarantee the electric life of switching contact knife and power-line terminal.(3) compare with the high-voltage alternating three-phase double power-supply load swith of Chinese patent 200510061855.6 disclosed a kind of sulphur hexafluoride formulas, reduced by a switching main shaft, by three the switching contact knifes and the mechanical interlocking device of this switching main shaft, simplified its structure greatly; Even the utility model product is damaged for some reason in addition, owing to only have one group of switching contact knife, and can only be electrically connected with one group of power-line terminal at most, so the duplicate supply accident of feed simultaneously can not take place, effectively eliminate safe hidden trouble.(4) also can realize overload, overvoltage, phase shortage and three-phase imbalance protection, effectively ensure the safe handling of load appliance by additional conventional current transformer, voltage transformer, zero-sequence transformer and control circuit.
Obviously, the foregoing description of the present utility model only is for the utility model example clearly is described, and is not to be qualification to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all execution modes.And these belong to conspicuous variation or the change that spirit of the present utility model extended out and still are among the protection range of the present utility model.

Claims (8)

1, a kind of intelligent high-voltage dual power conversion switch, comprise pressure box (1), be arranged on three main power source binding posts (2), three stand-by power supply binding posts (3) and three load wiring posts (4) on the pressure box casing (11), and be arranged on the power supply switching mechanism (5) in the pressure box (1); It is characterized in that: this switch also comprises a three-phase vacuum breaker device (6), and described three-phase vacuum breaker device (6) comprises three vacuum interrupters (61), three moving contacts (62), three fixed contacts (63) and an operating mechanism (64); Described each moving contact (62)/fixed contact (63) is electrically connected with a corresponding main power source binding post (2)/stand-by power supply binding post (3) by power supply switching mechanism (5), and described each fixed contact (63)/moving contact (62) is electrically connected with a corresponding load wiring post (4).
2, intelligent high-voltage dual power conversion switch according to claim 1, it is characterized in that: the outer surface of the fixed contact of described each vacuum circuit-breaker (63) is provided with insulated column (631), and is arranged on casing (11) outer surface directly as load wiring post (4).
3, intelligent high-voltage dual power conversion switch according to claim 1 is characterized in that: described operating mechanism (64) comprises driving main shaft (641) and the drive rod (642) that is used to be connected driving main shaft (641) and moving contact (62).
4, intelligent high-voltage dual power conversion switch according to claim 1 is characterized in that: described power supply switching mechanism (5) comprises a switching main shaft (51), can be switched that main shaft (51) drives and three switching contact knifes (52) of turning an angle.
5, intelligent high-voltage dual power conversion switch according to claim 4, it is characterized in that: described each switching contact knife (52) is the V-type contact knife, and described switching mechanism (5) also comprises and being used for as the contact knife rotating shaft (53) of each V-type contact knife rotary middle spindle and the insulated tension pole (54) that is used for connecting switching main shaft (51) and each V-type contact knife.
6, intelligent high-voltage dual power conversion switch according to claim 4 is characterized in that: described each switching contact knife (52) is the yi word pattern contact knife, and described each switching contact knife (52) is fixed on and switches on the main shaft (51).
7, intelligent high-voltage dual power conversion switch according to claim 1 is characterized in that: described pressure box is filled with sulfur hexafluoride gas in (1).
8, intelligent high-voltage dual power conversion switch according to claim 1, it is characterized in that: be provided with in the described pressure box (1) and be used for the metal runners (8) that is electrically connected with moving contact (the 62)/fixed contact (63) of vacuum circuit-breaker (6), each switching contact knife (52) in the described power supply switching mechanism (5) all has along switching symmetrically arranged two the contact knife arms in main shaft (51) center, axle center, the contact knife arm (521) of one side is used for being electrically connected with main power source binding post (2) or stand-by power supply binding post (3), and the contact knife arm (522) of opposite side can be gone up in described metal runners (8) and slide.
CNU2008200851704U 2008-04-03 2008-04-03 Intelligent high voltage dual power supply converting switch Expired - Fee Related CN201229891Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008200851704U CN201229891Y (en) 2008-04-03 2008-04-03 Intelligent high voltage dual power supply converting switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008200851704U CN201229891Y (en) 2008-04-03 2008-04-03 Intelligent high voltage dual power supply converting switch

Publications (1)

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CN201229891Y true CN201229891Y (en) 2009-04-29

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109585193A (en) * 2018-12-14 2019-04-05 首瑞（天津）电气设备有限公司 Switching device
CN110749837A (en) * 2019-10-29 2020-02-04 国网山西省电力公司阳泉供电公司 Manual seesaw type self-checking switching device and high-voltage switch room grounding alarm

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109585193A (en) * 2018-12-14 2019-04-05 首瑞（天津）电气设备有限公司 Switching device
CN110749837A (en) * 2019-10-29 2020-02-04 国网山西省电力公司阳泉供电公司 Manual seesaw type self-checking switching device and high-voltage switch room grounding alarm

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090429

Termination date: 20110403