CN202018764U

CN202018764U - 10kV outgoing feeder secondary circuit simulator

Info

Publication number: CN202018764U
Application number: CN2010205550293U
Authority: CN
Inventors: 赵义明; 刘明明; 王玉霞; 吴磊; 王芹; 孟照兵; 王东起
Original assignee: 赵义明
Priority date: 2010-09-29
Filing date: 2010-09-29
Publication date: 2011-10-26
Anticipated expiration: 2020-09-29

Abstract

The utility model relates to a 10kV outgoing feeder secondary circuit simulator in the field of electrical major practice teaching. The technical scheme includes that the 10kV outgoing feeder secondary circuit simulator mainly comprises a box and an electrical component, the electrical component is disposed in the box and comprises a 220V alternating-current power source and a 220V direct-current power source, two power terminals are connected in parallel, a rectifier bridge is arranged on a circuit of the alternating-current power source, a plurality of demonstration circuits are connected in parallel to an output circuit of the rectifier bridge through a power fuse, and each demonstration circuit is connected with the electrical element corresponding to the same so as to simulate different control functions of a secondary circuit. The 10kV outgoing feeder secondary circuit simulator is simple in structural principle, reliable in action, easy to learn, durable, low in manufacturing cost, and capable of simulating various action processes of 10kV outgoing feeder secondary circuits and allowing for training of relay protection fixed-value test, fault simulation, relay debugging and the like, and has signal indications completely the same as those of an actual operation site, such as sound, light and the like.

Description

10kV outgoing secondary circuit simulator

One, technical field:

The utility model relates to the high pressure outgoing secondary circuit emulation experiment device in a kind of electric specialty student teaching field, particularly relates to the 10kV outgoing secondary circuit simulator of the functions such as course of action, accident alarming of protections such as a kind of tripping operation of adopting signal imitation 10kV outgoing secondary circuits such as sound, light, combined floodgate, instantaneous over-current.

Two, background technology:

At present, domestic all kinds of electric power professional universities and colleges is in carrying out transformer station's high pressure outgoing secondary circuit problem teaching, what mainly carry out is telling about of Specialized Theory aspect, seldom have ready conditions and carry out on the spot field practice, practise even have ready conditions, also because transformer station's high pressure outgoing secondary circuit equipment stube cable is many, reasons such as wiring complexity, can't move the various control operation functions of the high pressure outgoing secondary circuit of on-the-spot actual motion to classroom, more can't in the laboratory, carry out the simulated maneuver of exercises process between high pressure outgoing secondary circuit and the isolating switch.Domestic some power equipment manufacturer is in product introduction, carry out the analog machine of transformer station's high pressure outgoing secondary circuit course of action, what use mostly is to adopt industrial computer, technology manufacturings such as single-chip microcomputer form, its inner structure complexity, the principle profundity, program is loaded down with trivial details, poor anti jamming capability, and the high difficulty of repairing of cost, by retrieval, do not see on the domestic electric power professional teaching teaching aid market that a kind of principle is arranged is simple, with low cost, and antijamming capability is strong, and transformer station's high pressure outgoing secondary circuit simulator is easily repaired in debugging, does not also find this series products on the market.

Three, summary of the invention:

The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, provide a kind of theory structure simple, cheap, can simulate exercises process between transformer station's high pressure outgoing secondary circuit and the 10KV outgoing secondary circuit simulator of indicating with signals such as the on-the-spot identical sound of actual motion, light is arranged.

Its technical scheme is: mainly be made up of casing and electric component, electric component is arranged in the casing, electric component comprises: two power supplys are 220V AC power and 220V direct supply, two power supply terminal parallel connections, on the circuit of AC power, be provided with rectifier bridge, on the output loop of rectifier bridge through power safety and be connected to a plurality of illustrative circuitry; Described illustrative circuitry is to be connected to auxiliary reclay through power safety on the output loop of rectifier bridge, hummer, and be connected to multiple switching relay by each contact of gauge tap, jump position relay, signal relay, after-acceleration relay, anti-trip relay, the time relay, auxiliary reclay, tripping relay, closing relay, quick-break current relay, overcurrent relay, export a plurality of external circuits terminals.

The beneficial effects of the utility model are: its structural principle is simple; reliable in action; Yi Xue is durable; low cost of manufacture; can simulate the exercises process between the 10kV outgoing secondary circuit and can carry out the real training of projects such as relay protection constant value test, fault simulation, relay debugging, and the emulation experiment device of indicating with signals such as the on-the-spot identical sound of actual motion, light is arranged.

Four, description of drawings:

Accompanying drawing 1 is a structural representation of the present utility model;

Among the last figure: the KK-gauge tap, ZCH-multiple switching relay, TWJ-are jumped the position relay, XJ, 1XJ, the 2XJ-signal relay, JSJ-after-acceleration relay, TBJ-anti-trip relay, the 1SJ-time relay, ZJ, 1ZJ, the 2ZJ-auxiliary reclay, the TJ-tripping relay, the HJ-closing relay, 1LJ, 2LJ-quick-break current relay, 3LJ, the 4LJ-overcurrent relay, QP, 1LP, 2LP-connects pressing plate, the red pilot lamp of HD-, the green pilot lamp of LD-, FM-hummer, 1RD, the 2RD-power safety, 2,4,21,22,24,5,8,11,10,9,12,14,15,16,13,6,7,1,3,19, the connection terminal of 17-gauge tap KK.

Five, embodiment:

In conjunction with the accompanying drawings 1, the utility model will be further described:

The utility model mainly is made up of casing and electric component, electric component is arranged in the casing, electric component comprises: two power supplys are 220V AC power and 220V direct supply, two power supply terminal parallel connections, on the circuit of AC power, be provided with rectifier bridge, on the output loop of rectifier bridge through power safety and be connected to a plurality of illustrative circuitry; Each illustrative circuitry is connected to corresponding with it each electrical equipment respectively, with the different control function of simulation secondary circuit.

Illustrative circuitry is to be connected to auxiliary reclay through power safety on the output loop of rectifier bridge, hummer, be connected to multiple switching relay by each contact of gauge tap, jump position relay, signal relay, after-acceleration relay, anti-trip relay, the time relay, auxiliary reclay, tripping relay, closing relay, quick-break current relay, overcurrent relay, export a plurality of external circuits terminals;

Principle of work is: after the device energising, closing relay HJ coil constitutes series loop with a jumping position relay TWJ coil by auxiliary reclay 1ZJ normally closed contact, because the jumping position relay TWJ coil resistance that adopts is big in design, its coil pressure drop is also big, jump position relay TWJ adhesive this moment and closing relay HJ pressure drop is little, do not reach its minimum movements magnitude of voltage and be in not attracting state.Jump relay TWJ action back, position its normal opened contact TWJ1 closure and connect green pilot lamp LD loop by KK

contact

11,10, at this moment, green pilot lamp azarin pilot lamp does not work, and simulates state behind circuit breaker trip.

When device prepared combined floodgate, gauge tap KK11,10 contacts disconnected, and 9,10 contacts are connected, and flashing power source 100 is connected green pilot lamp LD loop, so green pilot lamp begins flash of light.

When device mimic-disconnecting switch closing by hand, KK5,8 connects, and the 220V rated voltage is added on the closing relay HJ coil, and closing relay HJ moves its contact HJ ₁Closure starts auxiliary reclay 1ZJ, wherein a pair of normal opened contact 1ZJ after the auxiliary reclay 1ZJ action ₃Play the self-sustaining effect, a pair of normally closed contact 1ZJ ₁Disconnected the loop of closing relay HJ coil and green pilot lamp LD, another is to normal opened contact 1ZJ ₂Connect the wire loop of tripping relay TJ, the coil of tripping relay TJ and red pilot lamp constitute the loop by KK16,13 contacts, because the dividing potential drop effect of red pilot lamp HD resistance makes tripping relay TJ be in not operating state, at this moment, the bright green pilot lamp of red pilot lamp goes out, device has been finished the simulation "on" position, is in the back state that closes a floodgate.Close a floodgate back KK21,22 contacts of device connects, and "+KM " power supply is given the capacitor C in the H multiple switching relay charging by the charging resistor 4R in KK21,22 contacts and the multiple switching relay ZCH, through 15-25 after second capacitor C can be full of.

When device prepares tripping operation, KK16,13 contacts disconnect, 13,14 contacts are connected, flashing power source 100 is connected red pilot lamp HD loop, so red pilot lamp begins flash of light, simultaneously, KK2,4 contacts are connected, make the discharge resistance 6R in the multiple switching relay ZCH constitute the shunt circuit with capacitor C, capacitor C moment discharges to 6R, so multiple switching relay ZCH is failure to actuate when having guaranteed with gauge tap KK hand trip(ping).

When device mimic-disconnecting switch hand trip(ping), KK6,7 connects, and rated voltage is added on the tripping relay TJ coil, and tripping relay TJ moves its normally closed contact TJ ₁Disconnected the wire loop of auxiliary reclay 1ZJ, auxiliary reclay 1ZJ returns its normal opened contact 1ZJ ₂, 1ZJ ₃Disconnect normally closed contact 1ZJ ₁Closure, so tripping relay TJ returns, green pilot lamp azarin pilot lamp goes out, device has been finished the simulation tripped condition, has got back to the virgin state after the tripping operation again.

When the action of device simulation transient fault fast tripping protection; artificial short circuit quick-break current relay 1LJ or 2LJ any docking point wherein; then "+KM " power supply is by 2XJ signal relay coil; 3LP connects pressing plate; intermediate relay ZJ exit relay coil constitutes the loop with " KM " power supply; so intermediate relay ZJ exit relay action; its normal opened contact ZJ1 is closed to cause No. 33 line trip(ping) circuits with "+KM " power supply; constitute loop starting tripping relay TJ by the 1ZJ2 contact; in full accord when tripping relay TJ course of action such as above-mentioned device mimic-disconnecting switch hand trip(ping), its normally closed contact TJ ₁Disconnected the wire loop of auxiliary reclay 1ZJ, auxiliary reclay 1ZJ returns its normal opened contact 1ZJ ₂, 1ZJ ₃Disconnect normally closed 1ZJ ₁Closed; tripping relay TJ returns; jump position relay TWJ adhesive; green pilot lamp azarin pilot lamp goes out; another contact TWJ2 is also closed after the jumping position relay TWJ adhesive meanwhile causes multiple switching relay ZCH terminal 7 with " KM " power supply; because KK its contact 21 of state behind combined floodgate before this; 22 have caused multiple switching relay terminal 8 at on-state "+KM " power supply; so starting of the time relay sj in the multiple switching relay ZCH; its contact SJ1 closure after certain time-delay; make capacitor C to the little intermediate relay ZJ coil discharge in the multiple switching relay; little intermediate relay ZJ starting back its series connection normal opened contact ZJ1; ZJ3 simultaneously closed and with electric current self-sustaining coil; signal relay XJ; connect pressing plate QP; the TBJ normally closed contact; 1ZJ1; closing relay HJ coil constitutes the loop; so closing relay HJ starts adhesive; closing relay HJ action back as above-mentioned device are simulated manual making process unanimity; so far device has been finished simulation transient fault fast tripping protection would trip, the course of action of reclosing successful reclosing.

When device simulation permanent fault overcurrent protection action; artificial short circuit overcurrent relay 3LJ or 4LJ any docking point wherein; then "+KM " power supply is by 3LJ or 4LJ normal opened contact starting overcurrent time relay 1SJ; the 1SJ action is after its contact of certain time-delay 1SJ1 closure; "+KM " power supply is by 1XJ signal relay coil; 2LP connects pressing plate; intermediate relay ZJ exit relay coil constitutes the loop with " KM " power supply; so above-mentioned tripping operation process is finished in the action of intermediate relay ZJ exit relay; the reclosing process is finished in the multiple switching relay starting of tripping operation back; but moment after reclosing is finished again combined floodgate; because the normal opened contact that is permanent fault overcurrent relay 3LJ or 4LJ will be closed once more; time relay 1SJ starts once more; this moment, the instantaneous contact 1SJ2 of 1SJ need not wait until before the time-delay contact 1SJ1 closure closed already; by multiple switching relay terminal 4 "+KM " power supply is caused after-acceleration relay J SJ wire loop and inner little auxiliary reclay contact ZJ4 is closed when reclosing closes a floodgate again before this; the contact JSJ3 that is connected on the instantaneous contact 1SJ2 of overcurrent time relay loop after the starting of after-acceleration relay is the instantaneous closure of energising; the normal opened contact that the outage time-delay disconnects; this moment the consistent closure state that is in; so "+KM " power supply passes through 1SJ2; 1LP connects pressing plate; intermediate relay ZJ exit relay coil constitutes the loop with " KM " power supply; the tripping operation process is finished in the action of intermediate relay ZJ exit relay once more; tripping operation back multiple switching relay inner capacitor C is because the too short lowest starting voltage that does not reach little intermediate relay ZJ of duration of charging; therefore although the time relay starts but little intermediate relay ZJ can not started once more in multiple switching relay this moment; device just can not carry out the reclosing second time yet; so far finished the course of action that simulation permanent fault overcurrent protection action reclosing unsuccessful reclosing quickens tripping operation; on the other hand because KK1; 3; 19; 17; contact is closed behind combined floodgate, and this moment is through tripping relay TJ normal opened contact TJ ₂Connected the wire loop of auxiliary reclay 2ZJ, auxiliary reclay 2ZJ action back normal opened contact 2ZJ ₁Connected FM hummer loop, then device give spoken, visual alarm, after manually the gauge tap handle being got to tripping operation back state, KK1,3,19,17, the contact disconnection, hummer just returns.

The user can simulate all kinds of course of action and search according to the various trouble spots of the artificial simulation of actual conditions each different circuit in said apparatus, reaches the purpose of practice-training teaching.

Claims

1. 10KV outgoing secondary circuit simulator, it is characterized in that: mainly form by casing and electric component, electric component is arranged in the casing, electric component comprises 220V AC power and 220V direct supply, two power supply terminal parallel connections, on the circuit of AC power, be provided with rectifier bridge, on the output loop of rectifier bridge through power safety and be connected to a plurality of illustrative circuitry; Described illustrative circuitry is to be connected to auxiliary reclay through power safety on the output loop of rectifier bridge, hummer, and be connected to multiple switching relay by each contact of gauge tap, jump a position relay, signal relay, after-acceleration relay, anti-trip relay, the time relay, auxiliary reclay, tripping relay, closing relay, quick-break current relay, overcurrent relay.