CN204497844U - A kind of switch cubicle Secondary Circuit of Potential Transformer counnter attack feed system - Google Patents
A kind of switch cubicle Secondary Circuit of Potential Transformer counnter attack feed system Download PDFInfo
- Publication number
- CN204497844U CN204497844U CN201520164433.0U CN201520164433U CN204497844U CN 204497844 U CN204497844 U CN 204497844U CN 201520164433 U CN201520164433 U CN 201520164433U CN 204497844 U CN204497844 U CN 204497844U
- Authority
- CN
- China
- Prior art keywords
- female
- counnter attack
- electricity supply
- electricity
- supply element
- 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 - Fee Related
Links
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model provides a kind of switch cubicle Secondary Circuit of Potential Transformer counnter attack feed system, comprise the female secondary windings of PT of I, the female secondary windings of PT of II, voltage parallel device, measure and control device, protocol conversion device, telemechanical apparatus, Field Monitoring System and warning device, field optical fibers transceiver, distant place fiber optical transceiver, remote monitoring system and warning device, the female secondary windings of PT of described I, the female counnter attack electricity supply element of I of dual pressure circuit structure is connected between the female secondary windings of PT of II and measure and control device, the female counnter attack electricity supply element of II, the disconnection of dual pressure circuit makes Secondary Circuit of Potential Transformer break.By the break-make adopting the female counnter attack electricity supply element of the I of double voltage type loop structure, the female counnter attack electricity supply element of II controls major loop and order circuit, avoid secondary sky to open fault and cause feedback electricity to hurt sb.'s feelings, ensured maintenance, operations staff's safety.
Description
Technical field
The utility model relates to switch cubicle Voltage Transformer Anti feedback technique field, is specifically related to a kind of switch cubicle Secondary Circuit of Potential Transformer counnter attack feed system.
Background technology
At present, in order to ensure power supply reliability and fail safe, electric power system 10kV adopts single-trunk segmental wiring mode (two sections of bus-types) substantially, and switch cubicle then adopts middle-placed switch cabinet form; Wherein, the wiring of 10kV voltage transformer primary side adopts isolation handcart to add fuse protected mode, and secondary circuit is connected to air switch protection, is connected to voltage parallel device between two sections of transformer secondary circuits.Be in operation; when in certain section of voltage transformer cabinet during device fails; this section of voltage transformer needs out of service; now; for ensureing that the equipment such as second protection, metering breaking down access instrument transformer cabinet connects does not lose power supply; need to drop into voltage parallel device, another section of normal instrument transformer secondary voltage is converted to the secondary device that the instrument transformer cabinet that breaks down is powered, to ensure that secondary device normally runs.
But, if the reasons such as voltage transformer secondary air switch phase the two poles of the earth burning of contact cause conducting, normal secondary voltage can be electric to fault transformer cabinet voltage transformer secondary side through air switch feedback through voltage parallel device, through voltage transformation, being once formed with nearly 3000V voltage, easily have an accident; And, because hands injured Secondary Circuit of Potential Transformer is only connected to auxiliary air switch, Secondary Circuit of Potential Transformer turns inspecting state and is just disconnected by air switch, unobvious visible cut-off point, and above charged display device transducer access fuse, after fuse is molten, whether charged, there is larger security risk when maintenance, operations staff work if cannot monitor instrument transformer.
Domestic patent database disclosed some patented technologies about switch cubicle voltage transformer protection system in recent years:
Such as: patent documentation [application number] CN201220396333.7, open (bulletin) number [CN202737560U], this publication discloses " a kind of two electric inlet wire high-tension switch cabinet o-volt protection circuit ".This protective circuit comprises main incoming power and standby incoming power; a voltage transformer is respectively provided with at the electricity input side of described main incoming power and described standby incoming power; described main incoming power is provided with main circuit breaker; described standby incoming power is provided with standby circuit breaker, and described main circuit breaker and described standby circuit breaker are separately installed with decompression electromagnet.Because this utility model adopts decompression electromagnet to the disjunction of power supply high pressure, whether charged, there is larger security risk when maintenance, operations staff work if cannot monitor instrument transformer.
Such as: patent documentation [application number] CN201420350107.4, open (bulletin) number [CN204130941U], this publication discloses " a kind of novel compositions electric switch cabinet ".It comprises the first cabinet and the second cabinet, turnable top cover is provided with at described first cabinet and the second cabinet top, pony sill is provided with at described first cabinet and the second cabinet bottom, upper and lower translation formula bedplate is provided with around described pony sill, described first cabinet internal upper part is the first bus-bar room, bottom is installation unit room, described installation unit room is divided into the first installation unit room, second installation unit room and the 3rd installation unit room, visual cabinet Qianmen is provided with at described first cabinet and the second cabinet front, bus clip and bus is provided with in described first bus-bar room, the first current transformer is provided with in described first installation unit indoor, wattless component watt-hour meter is provided with in described second installation unit indoor, automatic air-break switch is provided with in described 3rd installation unit indoor, described bus is connected with the first current transformer from top to bottom, be the second bus-bar room at described second cabinet internal upper part, rotating knife switch is provided with in described second bus-bar room bottom, circuit breaker is provided with in described rotating knife switch bottom, the second current transformer is provided with in described circuit breaker bottom, they are linked in sequence.This invention reduces the object of equipment failure rate by being separated by individual unit to reach, but the problem of existence larger security risk when not solving the phenomenon of the nearly 3000V voltage formed because of two bus power supply paired runnings and cannot monitor that instrument transformer whether chargedly makes maintenance, operations staff works.
Summary of the invention
The purpose of this utility model is to overcome deficiency of the prior art, a kind of Secondary Circuit of Potential Transformer that prevents is provided to produce high pressure and cause fault, online remote monitoring, the switch cubicle Secondary Circuit of Potential Transformer counnter attack feed system that maintenance safety is high.
In order to achieve the above object, the technical scheme in the invention for solving the technical problem is: switch cubicle Secondary Circuit of Potential Transformer counnter attack feed system, comprises the female secondary windings of PT of I, the female secondary windings of PT of II, voltage parallel device, measure and control device, protocol conversion device, telemechanical apparatus, Field Monitoring System and warning device, field optical fibers transceiver, distant place fiber optical transceiver, remote monitoring system and warning device, the female secondary windings of PT of described I, the female secondary windings of PT of II is all connected with voltage parallel device, voltage parallel device is connected with measure and control device, measure and control device is connected with protocol conversion device by anti-jamming network cable, protocol conversion device connects telemechanical apparatus through Ethernet, an output of telemechanical apparatus is connected with Field Monitoring System and warning device by Ethernet, another output of telemechanical apparatus is connected with field optical fibers transceiver through Ethernet, field optical fibers transceiver again through optical fiber successively with distant place fiber optical transceiver, remote monitoring system and warning device connect, the female secondary windings of PT of described I, the female counnter attack electricity supply element of I being connected to dual pressure circuit structure between the female secondary windings of PT of II and voltage parallel device, the female counnter attack electricity supply element of II.
The female secondary windings of PT of input termination I on female counnter attack electricity supply element one tunnel of described I, the output termination voltage parallel device on one tunnel, the signal positive supply of the input termination measure and control device on female counnter attack electricity supply element two tunnel of I, the output termination measure and control device remote signalling contact on two tunnels, interrupt signal is sent to supervisory control system by remote signalling contact, and the disconnection on a road, two tunnels makes Secondary Circuit of Potential Transformer break.
The female secondary windings of PT of input termination II on female counnter attack electricity supply element one tunnel of described II, the output termination voltage parallel device on one tunnel, the signal positive supply of the input termination measure and control device on female counnter attack electricity supply element two tunnel of II, the output termination measure and control device remote signalling contact on two tunnels, interrupt signal is sent to supervisory control system by remote signalling contact, and the disconnection on a road, two tunnels makes Secondary Circuit of Potential Transformer break.
Therefore, the disconnection of dual pressure circuit makes Secondary Circuit of Potential Transformer break, and we can make secondary device decompression by the break-make controlling dual pressure circuit, avoids auxiliary air switch fault and causes feedback electricity to hurt sb.'s feelings, ensured maintenance, operations staff's safety.
Further illustrate as to of the present utility model, the female counnter attack electricity supply element of described I, the female counnter attack electricity supply element of II to comprise in base plate, electric order circuit element, electric communication insulated column, electric major loop element, electric Your Majesty's insulated column, electricity main lower insulated column, insulation board under insulated column, electric communication respectively, insulated column in described electric communication, insulated column under electricity communication, electricity Your Majesty insulated column, the main lower insulated column of electricity is fixedly mounted on base plate, described electric order circuit element is by bolt tightening insulated column in electric communication, under electricity communication on insulated column, electricity major loop element by bolt tightening at electric Your Majesty's insulated column, on the main lower insulated column of electricity, electricity order circuit element is connected by insulation board with electric major loop element again, insulation board is provided with operating handle, by insulated column in loosening electric communication, insulated column under electricity communication, electricity Your Majesty insulated column, bolt on the main lower insulated column of electricity, twisting operating handle is by electric order circuit element, electricity major loop element is moved to the left, disconnect major loop and order circuit.Such design is by the bolt on loosening insulated column and twist operating handle, can directly disconnect major loop and order circuit, convenient and swift, safe and reliable.
Further illustrate as to of the present utility model, the female secondary windings of PT of electric major loop element one termination I of the female counnter attack electricity supply element of described I, another termination voltage parallel device; The female secondary windings of PT of electric major loop element one termination II of the female counnter attack electricity supply element of II, another termination voltage parallel device; The signal positive supply of the electric order circuit element one termination measure and control device of the female counnter attack electricity supply element of described I, the female counnter attack electricity supply element of II, another termination measure and control device remote signalling contact, interrupt signal is sent to supervisory control system by remote signalling contact, thus reaches the object of remote monitoring.
Further illustrate as to of the present utility model, described system is also connected with monitoring system of electric substation, monitoring system of electric substation receive interruption signal, and according to interrupt signal and alarm and notice is on-the-spot or remote monitoring personnel, monitoring host computer interface display secondary circuit state simultaneously.
Further illustrate as to of the present utility model, described system is also connected with five-preventing system, when overhaul of the equipments, when only having major loop and order circuit to disconnect, rear door of switch cabinet is just by five anti-checkings, now just can open double-bus switch cabinet back door, maintainer just can enter work, further ensure that the safety of maintainer.
Further illustrate as to of the present utility model, the female counnter attack electricity supply element of described I, the female counnter attack electricity supply element of II are arranged in voltage parallel device cabinet or in the female voltage transformer cabinet control room of I, II.
Further illustrate as to of the present utility model, the rated voltage of the female counnter attack electricity supply element of described I, the female counnter attack electricity supply element of II is 660V, and rated current is 24A, and specified cross section is 2.5mm
2.
The utility model switch cubicle Secondary Circuit of Potential Transformer counnter attack feed system has following beneficial effect:
(1) female counnter attack electricity supply element that the utility model switch cubicle Secondary Circuit of Potential Transformer counnter attack feed system utilizes is double voltage type structure, one tunnel counnter attack electricity supply element is serially connected in each winding loop of 10kV voltage transformer, when instrument transformer normally works, major loop and order circuit conducting; During inspecting state, major loop and order circuit disconnect, and because there being obvious cut-off point, avoiding secondary sky to open fault and causing feedback electricity to hurt sb.'s feelings, having ensured maintenance, operations staff's safety.
(2) the utility model is connected with monitoring system of electric substation and five-preventing system simultaneously, and at this default and alarm and on-the-spot or remote monitoring personnel can be notified, monitoring host computer interface display loop state simultaneously, when in instrument transformer cabinet during overhaul of the equipments, loop off-state is listed in typical operational procedure, when only having major loop and order circuit to disconnect, rear door of switch cabinet is just by five anti-checkings, now can open instrument transformer cabinet back door, maintainer just can enter work, avoid maintainer blindly to open switch cubicle electricity to hurt sb.'s feelings, further ensure that the safety of maintainer.
(3) the utility model by major loop and order circuit operation conditions, information and alarm event etc. by transformer station on the spot supervisory control system upload scheduling and far control, reach on-line monitoring object.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the structural representation of the utility model switch cubicle Secondary Circuit of Potential Transformer counnter attack feed system.
Fig. 2 is the Secondary Circuit of Potential Transformer counnter attack electricity supply element structural representation of the utility model switch cubicle Secondary Circuit of Potential Transformer counnter attack feed system.
In figure, the female secondary windings of PT of 1-I; The female secondary windings of PT of 2-II; The female counnter attack electricity supply element of 31-I; The female counnter attack electricity supply element of 32-II; 4-voltage parallel device; 5-measure and control device; 6-protocol conversion device; 7-telemechanical apparatus; 8-Field Monitoring System and warning device; 9-field optical fibers transceiver; 10-distant place fiber optical transceiver; 11-remote monitoring system and warning device; 301-base plate; 302-electricity order circuit element; Insulated column in the communication of 303-electricity; Insulated column under the communication of 304-electricity; 305-electricity major loop element; 306-electricity Your Majesty insulated column; The main lower insulated column of 307-electricity; 308-insulation board; 309-operating handle.
Embodiment
By Fig. 1, 2 is known, switch cubicle Secondary Circuit of Potential Transformer counnter attack feed system of the present utility model, comprises the female secondary windings of PT 1 of I, the female secondary windings of PT 2 of II, voltage parallel device 4, measure and control device 5, protocol conversion device 6, telemechanical apparatus 7, Field Monitoring System and warning device 8, field optical fibers transceiver 9, distant place fiber optical transceiver 10, remote monitoring system and warning device 11, the female secondary windings of PT 1 of described I, the female secondary windings of PT 2 of II is all connected with voltage parallel device 4, voltage parallel device 4 is connected with measure and control device 5, measure and control device 5 is connected with protocol conversion device 6 by anti-jamming network cable, protocol conversion device 6 connects telemechanical apparatus 7 through Ethernet, an output of telemechanical apparatus 7 is connected with Field Monitoring System and warning device 8 by Ethernet, another output of telemechanical apparatus 7 is connected with field optical fibers transceiver 9 through Ethernet, field optical fibers transceiver 9 again through optical fiber successively with distant place fiber optical transceiver 10, remote monitoring system and warning device 11 connect, the female secondary windings of PT 1 of described I, the female counnter attack electricity supply element 31 of I being connected to dual pressure circuit structure between the female secondary windings of PT 2 of II and voltage parallel device 4, the female counnter attack electricity supply element 32 of II, the female secondary windings of PT 1 of input termination I on female counnter attack electricity supply element 31 1 tunnel of described I, the output termination voltage parallel device 4 on one tunnel, the signal positive supply of the input termination measure and control device 5 on female counnter attack electricity supply element 31 2 tunnel of I, the output termination measure and control device 5 remote signalling contact on two tunnels, interrupt signal is sent to supervisory control system by remote signalling contact, and the disconnection on a road, two tunnels makes Secondary Circuit of Potential Transformer break, the female secondary windings of PT 2 of input termination II on female counnter attack electricity supply element 32 1 tunnel of described II, the output termination voltage parallel device 4 on one tunnel, the signal positive supply of the input termination measure and control device 5 on female counnter attack electricity supply element 32 2 tunnel of II, the output termination measure and control device 5 remote signalling contact on two tunnels, interrupt signal is sent to supervisory control system by remote signalling contact, and the disconnection on a road, two tunnels makes Secondary Circuit of Potential Transformer break.
As further improvement of the utility model, the female counnter attack electricity supply element 32 of the female counnter attack electricity supply element 31,11 of described I to comprise in base plate 301, electric order circuit element 302, electric communication insulated column 304, electric major loop element 305, electric Your Majesty's insulated column 306, electricity main lower insulated column 307, insulation board 308 under insulated column 303, electric communication respectively; In described electric communication, under insulated column 303, electric communication, insulated column 304, electric Your Majesty's insulated column 306, the main lower insulated column 307 of electricity are fixedly mounted on base plate 301, described electric order circuit element 302 by bolt tightening in electric communication under insulated column 303, electric communication on insulated column 304, electricity major loop element 305 by bolt tightening under electric Your Majesty's insulated column 306, electricity are main on insulated column 307, electricity order circuit element 302 is connected by insulation board 308 with electric major loop element 305 again, insulation board 308 is provided with operating handle 309.Such design is by the bolt on loosening insulated column and twist operating handle 309, can directly disconnect major loop and order circuit.
The female secondary windings of PT 1 of electric major loop element 305 1 termination I of the female counnter attack electricity supply element 31 of described I, another termination voltage parallel device 4; The female secondary windings of PT 2 of electric major loop element 305 1 termination II of the female counnter attack electricity supply element 32 of II, another termination voltage parallel device 4; The signal positive supply of the electric order circuit element 302 1 termination measure and control device 5 of the female counnter attack electricity supply element 31 of described I, the female counnter attack electricity supply element 32 of II, another termination measure and control device 5 remote signalling contact, interrupt signal is sent to supervisory control system by remote signalling contact.By insulated column 303 in loosening electric communication, insulated column 304 under electricity communication, electricity Your Majesty insulated column 306, bolt on the main lower insulated column 307 of electricity, twisting operating handle 309 is by electric order circuit element 302, electricity major loop element 305 is moved to the left, disconnect major loop and order circuit, now secondary device decompression, and disconnection information is sent to supervisory control system, monitoring host computer interface display secondary circuit state simultaneously, reach the object of remote monitoring, avoiding auxiliary air switch fault causes feedback electricity to hurt sb.'s feelings, convenient and swift, safe and reliable, ensure maintenance, operations staff's safety.
Described system is also connected with five-preventing system, and when overhaul of the equipments, when only having major loop and order circuit to disconnect, rear door of switch cabinet, just by five anti-checkings, is avoided maintainer blindly to open switch cubicle electricity and hurted sb.'s feelings, further ensure that the safety of maintainer.
The female counnter attack electricity supply element 31 of described I, the female counnter attack electricity supply element 32 of II are arranged in voltage parallel device 4 cabinet or in the female voltage transformer cabinet control room of I, II, here the female counnter attack electricity supply element 31 of I, the infield of the female counnter attack electricity supply element 32 of II and connected mode is not limited, as long as the connected mode of the female counnter attack electricity supply element 31 of I, the female counnter attack electricity supply element 32 of II can disconnect major loop and order circuit when overhauling.
The rated voltage of the female counnter attack electricity supply element 31 of described I, the female counnter attack electricity supply element 32 of II is 660V, and rated current is 24A, and specified cross section is 2.5mm
2.
The specification size of the female counnter attack electricity supply element 31 of we I that designs, the female counnter attack electricity supply element 32 of II is at present:
The female counnter attack electricity supply element 31 of I, II female counnter attack electricity supply element 32 base plate 301: be of a size of: 90mm (length) × 60mm (wide);
The insulated column of the female counnter attack electricity supply element 31 of I, the female counnter attack electricity supply element 32 of II is: diameter 13mm, high 22mm; Lower endoporus 10mm, upper endoporus, 4.2mm;
The insulation operating handle 309 of the female counnter attack electricity supply element 31 of I, the female counnter attack electricity supply element 32 of II is: diameter 10mm, high 15mm; Lower endoporus 14mm;
The insulation board 308 that is interconnected of the female counnter attack electricity supply element 31 of I, the female counnter attack electricity supply element 32 of II is: long 60mm, wide 13mm;
Here the female counnter attack electricity supply element 31 of I, the structure of the female counnter attack electricity supply element 32 of II or size is not limited, as long as the female counnter attack electricity supply element 31 of I, the female counnter attack electricity supply element 32 of II can disconnect major loop and order circuit when overhauling.
Embodiment:
After each apparatus of this system is installed, female for I counnter attack electricity supply element 31, the female counnter attack electricity supply element 32 of II are serially connected in each winding loop of 10kV voltage transformer, when equipment needs to run, closing switch cabinet back door, twist operating handle 309 to the right, by insulated column 304, electric Your Majesty's insulated column 306, the main lower insulated column 307 of electricity under insulated column 303, electric communication in the punchinging electric communication of aligning on electric order circuit element 302, electric major loop element 305, and tighten bolt, now major loop and order circuit conducting, starting device, when equipment needs to stop transport maintenance, loosen insulated column 303 in electric communication, insulated column 304 under electricity communication, electricity Your Majesty insulated column 306, bolt on the main lower insulated column 307 of electricity, twisting operating handle 309 is by electric order circuit element 302, electricity major loop element 305 is moved to the left, and major loop and order circuit is disconnected, now secondary device decompression, and by disconnection information by measure and control device 5, protocol conversion device 6, telemechanical apparatus 7, field optical fibers transceiver 9, distant place fiber optical transceiver 10 is sent to Field Monitoring System and warning device 8, remote monitoring system and warning device 11, Field Monitoring System and warning device 8 will disconnect again information feed back to five-preventing system, and five-preventing system verifies after receiving disconnection information, if be verified as true, now just can open instrument transformer cabinet back door, meanwhile, Field Monitoring System and warning device 8, remote monitoring system and warning device 11 are by major loop and order circuit operation conditions, information and alarm event etc. by transformer station on the spot monitor message be presented at monitoring host computer interface, reach on-line monitoring object, avoid auxiliary air switch fault cause feedback electricity hurt sb.'s feelings, convenient and swift, safe and reliable, ensured maintenance, operations staff's safety.The utility model switch cubicle Secondary Circuit of Potential Transformer counnter attack feed system can be used on sectionalized single busbar connection switch cubicle, also can be used on double-bus switch cabinet.
Claims (7)
1. a switch cubicle Secondary Circuit of Potential Transformer counnter attack feed system, comprise the female secondary windings of PT (1) of I, the female secondary windings of PT (2) of II, voltage parallel device (4), measure and control device (5), protocol conversion device (6), telemechanical apparatus (7), Field Monitoring System and warning device (8), field optical fibers transceiver (9), distant place fiber optical transceiver (10), remote monitoring system and warning device (11), the female secondary windings of PT (1) of described I, the female secondary windings of PT (2) of II is all connected with voltage parallel device (4), voltage parallel device (4) is connected with measure and control device (5), measure and control device (5) is connected with protocol conversion device (6) by anti-jamming network cable, protocol conversion device (6) connects telemechanical apparatus (7) through Ethernet, an output of telemechanical apparatus (7) is connected with Field Monitoring System and warning device (8) by Ethernet, another output of telemechanical apparatus (7) is connected with field optical fibers transceiver (9) through Ethernet, field optical fibers transceiver (9) again through optical fiber successively with distant place fiber optical transceiver (10), remote monitoring system and warning device (11) connect, it is characterized in that: the female secondary windings of PT (1) of described I, female counnter attack electricity supply element (31) of I being connected to dual pressure circuit structure between the female secondary windings of PT (2) of II and voltage parallel device (4), female counnter attack electricity supply element (32) of II,
The female secondary windings of PT (1) of input termination I on female counnter attack electricity supply element (31) tunnel of described I, the output termination voltage parallel device (4) on one tunnel, the signal positive supply of the input termination measure and control device (5) on female counnter attack electricity supply element (31) two tunnel of I, output termination measure and control device (5) the remote signalling contact on two tunnels, interrupt signal is sent to supervisory control system by remote signalling contact, and the disconnection on a road, two tunnels makes Secondary Circuit of Potential Transformer break;
The female secondary windings of PT (2) of input termination II on female counnter attack electricity supply element (32) tunnel of described II, the output termination voltage parallel device (4) on one tunnel, the signal positive supply of the input termination measure and control device (5) on female counnter attack electricity supply element (32) two tunnel of II, output termination measure and control device (5) the remote signalling contact on two tunnels, interrupt signal is sent to supervisory control system by remote signalling contact, and the disconnection on a road, two tunnels makes Secondary Circuit of Potential Transformer break.
2. switch cubicle Secondary Circuit of Potential Transformer counnter attack feed system according to claim 1, is characterized in that: female counnter attack electricity supply element (31) of described I, female counnter attack electricity supply element (32) of II to comprise in base plate (301), electric order circuit element (302), electric communication insulated column (304), electric major loop element (305), electric Your Majesty's insulated column (306), electricity main lower insulated column (307), insulation board (308) under insulated column (303), electric communication respectively, insulated column (303) in described electric communication, insulated column (304) under electricity communication, electricity Your Majesty's insulated column (306), the main lower insulated column (307) of electricity is fixedly mounted on base plate (301), described electric order circuit element (302) is by bolt tightening insulated column (303) in electric communication, under electricity communication on insulated column (304), electricity major loop element (305) by bolt tightening electric Your Majesty's insulated column (306), on the main lower insulated column (307) of electricity, electricity order circuit element (302) and electric major loop element (305) are connected by insulation board (308) again, insulation board (308) is provided with operating handle (309), by insulated column (303) in loosening electric communication, insulated column (304) under electricity communication, electricity Your Majesty's insulated column (306), bolt on the main lower insulated column (307) of electricity, twisting operating handle (309) is by electric order circuit element (302), electricity major loop element (305) is moved to the left, disconnect major loop and order circuit.
3. switch cubicle Secondary Circuit of Potential Transformer counnter attack feed system according to claim 2, it is characterized in that: the female secondary windings of PT (1) of electric major loop element (305) termination I of female counnter attack electricity supply element (31) of described I, another termination voltage parallel device (4); The female secondary windings of PT (2) of electric major loop element (305) termination II of female counnter attack electricity supply element (32) of II, another termination voltage parallel device (4); The signal positive supply of the electric order circuit element (302) termination measure and control device (5) of female counnter attack electricity supply element (31) of described I, female counnter attack electricity supply element (32) of II, another termination measure and control device (5) remote signalling contact, interrupt signal is sent to supervisory control system by remote signalling contact.
4. according to the switch cubicle Secondary Circuit of Potential Transformer counnter attack feed system in claim 1-3 described in any one, it is characterized in that: described system is also connected with monitoring system of electric substation, monitoring system of electric substation receive interruption signal, and according to interrupt signal and alarm and notice is on-the-spot or remote monitoring personnel, monitoring host computer interface display secondary circuit state simultaneously.
5. according to the switch cubicle Secondary Circuit of Potential Transformer counnter attack feed system in claim 1-3 described in any one, it is characterized in that: described system is also connected with five-preventing system, when overhaul of the equipments, when only having major loop and order circuit to disconnect, rear door of switch cabinet is just by five anti-checkings.
6. according to the switch cubicle Secondary Circuit of Potential Transformer counnter attack feed system in claim 1-3 described in any one, it is characterized in that: female counnter attack electricity supply element (31) of described I, female counnter attack electricity supply element (32) of II are arranged in voltage parallel device (4) cabinet or in the female voltage transformer cabinet control room of I, II.
7. according to the switch cubicle Secondary Circuit of Potential Transformer counnter attack feed system in claim 1-3 described in any one, it is characterized in that: the rated voltage of female counnter attack electricity supply element (31) of described I, female counnter attack electricity supply element (32) of II is 660V, rated current is 24A, and specified cross section is 2.5mm
2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520164433.0U CN204497844U (en) | 2015-03-24 | 2015-03-24 | A kind of switch cubicle Secondary Circuit of Potential Transformer counnter attack feed system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520164433.0U CN204497844U (en) | 2015-03-24 | 2015-03-24 | A kind of switch cubicle Secondary Circuit of Potential Transformer counnter attack feed system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204497844U true CN204497844U (en) | 2015-07-22 |
Family
ID=53577130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520164433.0U Expired - Fee Related CN204497844U (en) | 2015-03-24 | 2015-03-24 | A kind of switch cubicle Secondary Circuit of Potential Transformer counnter attack feed system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204497844U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113238171A (en) * | 2021-05-13 | 2021-08-10 | 贵州电网有限责任公司 | Remote and rapid positioning and judging method for electric secondary circuit fault |
-
2015
- 2015-03-24 CN CN201520164433.0U patent/CN204497844U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113238171A (en) * | 2021-05-13 | 2021-08-10 | 贵州电网有限责任公司 | Remote and rapid positioning and judging method for electric secondary circuit fault |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111146755B (en) | Feeder terminal and line protection device | |
| KR102145266B1 (en) | System and method for monitoring power system | |
| CN108233243A (en) | Gas insulation switch cabinet | |
| CN103022992A (en) | Feeder ground positioning method based on dispersion zero sequence voltage detection | |
| CN104037011A (en) | Watchdog division load switch | |
| CN107404070A (en) | Anti-misoperation type measurent wiring box device | |
| ES2967104T3 (en) | High voltage overhead electric transmission line equipped with switch unit | |
| CN204497844U (en) | A kind of switch cubicle Secondary Circuit of Potential Transformer counnter attack feed system | |
| CN201616666U (en) | Multifunctional short circuit protecting system of middle and low-voltage switch cabinet | |
| CN201601483U (en) | 10kV line live troubleshooting bypass device | |
| CN109586400A (en) | A kind of direct current cabinet circuit | |
| CN202771238U (en) | Transformer air-cooled control and protection device | |
| CN104426088A (en) | Voltage transformer handcart | |
| CN104836212A (en) | Arc light protection system suitable for double-power supply | |
| KR20120126344A (en) | Distribution line purpose T branched type circuit breaker | |
| CN210693223U (en) | Voltage transformer isolation combination device applied to uninterrupted operation | |
| CN209329687U (en) | A kind of traction substation emergency protection system | |
| CN206834842U (en) | Intelligent O＆M power distribution control system | |
| CN204376373U (en) | Dry coal system power consumption equipment ground arc accident warning device | |
| CN206132883U (en) | Circuit breaker heating circuit monitoring devices | |
| CN201541147U (en) | Direct current power supply system for substations | |
| CN110504756A (en) | A kind of ring network cabinet protective device control system | |
| CN202455049U (en) | Feeder failure backup protection device of track traffic power supply system | |
| CN218005865U (en) | Comprehensive emergency protection device for digital traction substation of high-speed heavy haul railway | |
| CN202309050U (en) | Intelligent protection device of railway contact network feeder line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20160324 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |