CN111276030A - Cable fault simulation training device - Google Patents
Cable fault simulation training device Download PDFInfo
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- CN111276030A CN111276030A CN202010255467.6A CN202010255467A CN111276030A CN 111276030 A CN111276030 A CN 111276030A CN 202010255467 A CN202010255467 A CN 202010255467A CN 111276030 A CN111276030 A CN 111276030A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/183—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for circuits
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B9/00—Simulators for teaching or training purposes
Abstract
The embodiment of the invention provides a cable fault simulation training device which comprises an operation panel and a junction box, wherein A can be simulated by controlling the closing of switches corresponding to a first group of switches1Phase B1Phase, A1Phase C1Phase, A1Zero phase line N, A1Phase earth line O, B1Phase C1Phase, B1Zero phase line N, B1Phase earth line O, C1Zero phase line N, C1The condition of short circuit caused by direct connection of the phase ground wire O and the zero line N ground wire O can be simulated by controlling the corresponding switches of the second group of switches to be switched off1Phase, B1Phase, C1The phase and neutral line N is open circuit, resulting in an open phase condition. All conditions in the cable fault can be simulated by controlling the first group of switches and the second group of switches, and the equipment can comprehensively know the knowledge in the cable fault and can perform modeling in the training and examination of operation and maintenance personnelThe operation is planned, and the technical problems that the training and assessment speed of operation and maintenance personnel is low and the working efficiency is extremely low in the prior art are solved.
Description
Technical Field
The invention relates to the field of fault training of power grids, in particular to cable fault simulation training equipment.
Background
With the rapid development of the operation and distribution power grid, the safety problem about the power grid increasingly becomes the focus of attention of the power system, wherein various cable faults are layered endlessly, and the fault types mainly include; interphase short circuit, interphase zero short circuit, phase-to-ground short circuit, and phase open circuit. In order to ensure the power supply reliability of the power grid and repair the power grid quickly, the technical skill requirements of high-voltage and low-voltage operation and maintenance personnel for finding the cable fault are increased day by day.
At present, the training of the operation and maintenance personnel of the power grid is achieved through modes of book teaching, video recording and the like, and then a field examination mode is adopted, along with the development of a power grid system, the number of personnel required by the power system is increased, the existing training examination mode cannot meet the requirement of the training examination of the personnel of the current power system, the theoretical knowledge can be completed through the book teaching or the video recording teaching in a classroom, but the training and the examination of practical operation can only be performed through actual operation, so that the training examination speed of the operation and maintenance personnel is low, and the working efficiency is extremely low. Therefore, the research on the cable fault simulation training equipment has important significance for solving the technical problems that operation and maintenance personnel in the prior art are slow in training and examination speed and extremely low in working efficiency.
Disclosure of Invention
The embodiment of the invention provides cable fault simulation training equipment, which solves the technical problems of low training and assessment speed of operation and maintenance personnel and extremely low working efficiency in the prior art.
The embodiment of the invention provides a cable fault simulation training device which comprises an operation panel and a junction box, wherein the ratio of the number of the connecting ends of the junction box to the number of the connecting ends of the junction box is 1: x, and x is more than or equal to 5;
the number of the junction boxes is not less than five, and all the junction boxes are connected with one end A including the connection end1A first terminal box and a connecting end of the phase are connected into B1Second terminal box of phase, connecting end access C1A third terminal box of the phase, one end of the connection is connected with a zero line N1The second terminal box and the fifth terminal box are connected with one end connected with a ground wire O, two connecting ends of the first terminal box, two connecting ends of the second terminal box, two connecting ends of the third terminal box, two connecting ends of the fourth terminal box and two connecting ends of the fifth terminal box are respectively connected through a first group of switches, at least one connecting end of the rest of the first terminal boxes, at least one connecting end of the rest of the second terminal boxes, at least one connecting end of the rest of the third terminal boxes and at least one connecting end of the rest of the fourth terminal boxes are respectively connected through a second group of switches, and the first group of switches and the second group of switches are both installed on the operation panel.
Preferably, the connecting terminal of the first junction box and the connecting terminal of the second junction box are connected in series through a voltage meter and a third group of switches, and the voltage meter and the third group of switches are both mounted on an operation panel.
Preferably, the connecting terminal of the third junction box and the connecting terminal of the fourth junction box are connected in series through a current meter and a fourth set of switches, and the current meter and the fourth set of switches are both mounted on an operation panel.
Preferably, the junction box further comprises a connecting end access A2A sixth junction box of the phase, one end of which is connected with the B2A seventh terminal box of the phase, one end of the connection is connected with the C2The eighth terminal box of the phase and the zero line N connected with one end2The connection ends of any two of the connection ends of the sixth junction box, the connection ends of the seventh junction box, the connection ends of the eighth junction box and the connection ends of the ninth junction box are respectively connected through a first group of variable resistors, and the first group of variable resistors are installed on the operation panel.
Preferably, a fifth group of switches is further connected between two connecting ends of any two connecting boxes at two connecting ends of the ninth connecting box, and the fifth group of switches is mounted on the operation panel.
Preferably, at least one connecting end of the remaining eighth junction boxes is connected to the first discharge contact through a sixth group of switches, at least one connecting end of the ninth junction box is connected to the second discharge contact through a seventh group of switches, the sixth group of switches, the seventh group of switches, the first discharge contact and the second discharge contact are all mounted on the operation panel, and the position of the first discharge contact is different from the position of the second discharge contact by a preset distance.
Preferably, the method further comprises the following steps: the first group of switches comprises a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a ninth switch and a tenth switch;
the x is 6, a first connecting end of the first junction box is connected with a first connecting end of the second junction box through a first switch, a second connecting end of the first junction box is connected with a first connecting end of the third junction box through a second switch, a third connecting end of the first junction box is connected with a first connecting end of the fourth junction box through a third switch, and a fourth connecting end of the first junction box is connected with a first connecting end of the fifth junction box through a fourth switch;
a second connecting end of the second junction box is connected with a second connecting end of the third junction box through a fifth switch, a third connecting end of the second junction box is connected with a second connecting end of the fourth junction box through a sixth switch, and a fourth connecting end of the second junction box is connected with a second connecting end of the fifth junction box through a seventh switch;
a third connecting end of the third junction box is connected with a third connecting end of the fourth junction box through an eighth switch, and a fourth connecting end of the third junction box is connected with a third connecting end of the fifth junction box through a ninth switch;
a fourth connecting end of the fourth junction box is connected with a fourth connecting end of the fifth junction box through a tenth switch;
the second group of switches comprises an eleventh switch, a twelfth switch, a thirteenth switch and a fourteenth switch, a fifth connecting end of the first junction box is connected with a first connecting end of the sixth junction box through the eleventh switch, a fifth connecting end of the second junction box is connected with a first connecting end of the seventh junction box through the twelfth switch, a fifth connecting end of the third junction box is connected with a first connecting end of the eighth junction box through the thirteenth switch, and a fifth connecting end of the fourth junction box is connected with a first connecting end of the ninth junction box through the fourteenth switch.
Preferably, the third group of switches comprises a voltmeter switch, and the sixth connecting end of the first junction box is connected with the sixth connecting end of the second junction box through the voltmeter and the voltmeter switch;
the fourth group of switches comprise ammeter switches, and the sixth connecting ends of the third junction box are connected with the sixth connecting ends of the fourth junction box through the ammeter and the ammeter switches.
Preferably, the first set of variable resistors comprises a first variable resistor, a second variable resistor, a third variable resistor, a fourth variable resistor, a fifth variable resistor, and a sixth variable resistor, and the fifth set of switches comprises a first resistor switch, a third resistor switch, a fourth resistor switch, a fifth resistor switch, and a sixth resistor switch;
the second connecting end of the sixth junction box is connected with the second connecting end of the seventh junction box through a first resistance switch and a first variable resistor, the third connecting end of the sixth junction box is connected with the second connecting end of the eighth junction box through a second resistance switch and a second variable resistor, the fourth connecting end of the sixth junction box is connected with the second connecting end of the ninth junction box through a third resistance switch and a third variable resistor, the third connecting end of the seventh junction box is connected with the third connecting end of the eighth junction box through a fourth resistance switch and a fourth variable resistor, the fourth connecting end of the seventh junction box is connected with the second connecting end of the ninth junction box through a fifth resistance switch and a fifth variable resistor, a fourth connecting end of the eighth junction box is connected with a third connecting end of the ninth junction box through a sixth resistance switch and a sixth variable resistor;
the sixth group of switches comprises a first discharge switch, and a fifth connecting end of the eighth junction box is connected with the first discharge contact through the first discharge switch;
the seventh group of switches comprises a second discharge switch, and a sixth connecting end of the ninth junction box is connected with the second discharge contact through the second discharge switch.
Preferably, the equipment still includes the cabinet body, rotatable cabinet door of installing on the cabinet body, operating panel and terminal box are all installed the cabinet is internal, cabinet body one side is equipped with the first round hole that can supply to connect the first cable of three phase current and inserts and is used for inserting the second round hole of emulation ground wire, cabinet body opposite side is equipped withA third round hole for connecting a second cable of the three-phase power supply, A1Phase, B1Phase, C1Phase and zero line N1The first cable is connected into the cabinet body; a is described2Phase, B2Phase, C2Phase and zero line N2The grounding wires O are connected into the cabinet body through a simulation grounding wire.
According to the technical scheme, the embodiment of the invention has the following advantages:
the embodiment of the invention provides a cable fault simulation training device which comprises an operation panel and a junction box, wherein A can be simulated by controlling the closing of switches corresponding to a first group of switches1Phase B1Phase, A1Phase C1Phase, A1Zero phase line N, A1Phase earth line O, B1Phase C1Phase, B1Zero phase line N, B1Phase earth line O, C1Zero phase line N, C1Phase earth O and neutral Nearth O are directly connected, resulting in a short-circuit condition, of which A1Phase B1Phase, A1Phase C1Phase B and1phase C1The direct switch-on simulates the conditions of all interphase short circuits in the cable fault, all the conditions in the cable fault can be simulated by controlling the first group of switches and the second group of switches, and during training and examination of operation and maintenance personnel, the equipment provided by the embodiment can be directly controlled, so that the comprehensive knowledge of the cable fault knowledge can be realized, the simulation operation can be performed, and the technical problems of low training and examination speed of the operation and maintenance personnel and extremely low working efficiency in the prior art are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, it is obvious that the drawings described below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a cabinet of a cable fault simulation training device according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an operation panel of a cable fault simulation training device according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of an energy switching device according to an embodiment of the present invention;
the following drawings:
1. a first cable; 2. a junction box; 21. a first junction box; 22. a second junction box; 23. a third junction box; 24. a fourth junction box; 25. a fifth junction box; 26. a sixth junction box; 27. a seventh junction box; 28. an eighth junction box; 29. a ninth junction box; 4. an operation panel; 41. a first set of switches; 411. a first switch; 412. a second switch; 413. a third switch; 414. a fourth switch; 415. a fifth switch; 416. a sixth switch; 417. a seventh switch; 418. an eighth switch; 419. a ninth switch; 410. a tenth switch; 42. a second set of switches; 421. an eleventh switch; 422. a twelfth switch; 423. a thirteenth switch; 424. a fourteenth switch; 43. a third set of switches; 431. a voltmeter switch; 44. a voltmeter; 45. a fourth set of switches; 451. an ammeter switch; 46. an ammeter; 47. a fifth set of switches; 471. a first resistance switch; 472. a second resistance switch; 473. a third resistance switch; 474. a fourth resistance switch; 475. a fifth resistance switch; 476. a sixth resistance switch; 48. a first set of variable resistors; 481. a first variable resistor; 482. a second variable resistor; 483. a third variable resistor; 484. a fourth variable resistor; 485. a fifth variable resistor; 486. a sixth variable resistor; 491. a first discharge switch; 492. a second discharge switch; 493. a first discharge contact; 494. a second discharge contact; 5. a cabinet body; 51. a cabinet door; 52. a first circular hole; 53. a second circular hole; 6. a second cable; 7. and (5) simulating a ground wire.
Detailed Description
The embodiment of the invention provides cable fault simulation training equipment, which solves the problem that an appropriate method and an appropriate tool are lacked in current energy internet energy flow scheduling, and ensures the safety and the stability of energy internet energy circulation.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the following description of the embodiments of the present invention is provided with reference to the accompanying drawings, and it is to be understood that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
For the cable fault types of the power grid, the cable fault types mainly comprise inter-phase short circuit, inter-phase zero short circuit, phase-to-ground short circuit, phase short circuit and the like, operation and maintenance personnel need to be familiar with the situations before going on duty, and need to be capable of carrying out practical operation by proficiency, and can go on duty only through examination according to examination requirements. The theoretical knowledge of the operation and maintenance personnel can be completed by teaching through video and book knowledge, and the practical operation experience part has a field practical opportunity but has a quite small practical operation opportunity. In the assessment process, the speed of performing field actual operation and assessment on each operation and maintenance worker is low, and the work efficiency of the assessment is extremely low.
Referring to fig. 1 to 3, an embodiment of a cable fault simulation training device according to an embodiment of the present invention includes an operation panel 4, a junction box 2, and a cabinet 5, wherein a cabinet door 51 is rotatably installed on the cabinet 5, the operation panel 4 and the junction box 2 are both installed in the cabinet 5, one side of the cabinet 5 is provided with a first circular hole 52 for connecting a first cable 1 of a three-phase power supply and a second circular hole 53 for connecting a simulation ground wire 7, the other side of the cabinet 5 is provided with a circular hole for connecting a second cable 6 of the three-phase power supply, the circular hole corresponds to the second circular hole, and the second cable 6 can also be connected through the second circular hole. A. the1Phase, B1Phase, C1Phase and zero line N1Are all connected into the cabinet body 5 through a first cable 1; a. the2Phase, B2Phase, C2Phase and zero line N2All are connected into the cabinet body 5 through a second cable 6, and the ground wire O is simulated through the modelThe true ground wire 7 is connected into the cabinet body 5. Operation panel 4 can be operated through opening cabinet door 51, operation panel 4 is through the bolt locking in the internal 5 of cabinet, the mounting box is arranged in operation panel 4 below, terminal box 2 is installed the bottom of the cabinet body 5, the line of walking between terminal box 2 and the operation panel 4 of being convenient for, cabinet door 51 can protect operation panel 4, terminal box 2 and inside wire, can carry out the wiring operation of inside wire to operation panel 4 and terminal box 2 through opening cabinet door 51 and pull down operation panel 4. The cables used in this embodiment are all three-phase four-wire cables, and in addition, a ground wire is provided, and a power supply is connected to the outside of both the first cable 1 and the second cable 6.
The ratio of the number of the connecting ends of the junction box 2 to the number of the connecting ends of the junction box 2 is 1: x, wherein x is more than or equal to 5; the terminal box 2 adopted in the present embodiment is a terminal box 2 with one inlet and six outlets, that is, the ratio of the connecting end to the connecting end is 1:6, the number of the connecting ends can be selected according to the requirement, and the present embodiment needs to realize all fault conditions of analog simulation, so that x is not less than 5, that is, x needs to be five at least, and the connection can meet all conditions of analog simulation.
The terminal boxes 2 are not less than five, and all the terminal boxes 2 are connected with one end A through connection1A first terminal box 21 of the phase, a connection end access B1 Second terminal box 22 of the phase, connected end access C1A third terminal box 23 of the phase, one end of which is connected with a zero line N1A fourth terminal box 24 and a fifth terminal box 25 connected to a ground line O at one end;
the junction box 2 also comprises a connecting end access A2A sixth terminal box 26 of the phase, connected with one end connected B2A seventh terminal box 27 of the phase, connected with one end connected C2An eighth terminal box 28 of the phase and a neutral wire N connected at one end2The ninth terminal block 29;
two connecting ends of any two of the first connecting box 21, the second connecting box 22, the third connecting box 23, the fourth connecting box 24 and the fifth connecting box 25 are connected by a first group of switches 41, at least one connecting end of the rest of the first connecting boxes 21, at least one connecting end of the rest of the second connecting boxes 22, at least one connecting end of the rest of the third connecting boxes 23 and at least one connecting end of the rest of the fourth connecting boxes 24 are connected by a second group of switches 42, and the first group of switches 41 and the second group of switches 42 are installed on the operation panel 4.
A can be simulated by controlling the corresponding switch closure of the first group of switches 411Phase B1Phase, A1Phase C1Phase, A1Zero phase line N, A1Phase earth line O, B1Phase C1Phase, B1Zero phase line N, B1Phase earth line O, C1Zero phase line N, C1Phase earth O and neutral Nearth O are directly connected, resulting in a short-circuit condition, of which A1Phase B1Phase, A1Phase C1Phase B and1phase C1Direct connection simulates the situation of all phase-to-phase shorts in a cable fault, A1Zero phase line N, B1Phase zero line N and C1The direct connection of the phase zero line N simulates the condition of zero short circuit among all phases in the cable fault, A1Phase earth line O, B1Phase ground lines O and C1The direct connection of the phase ground wire O simulates the condition of short circuit to all the phase grounds in the cable fault, in addition, the fault condition with potential danger also exists in the cable fault, namely the condition that the ground wire O of the zero line N is directly connected, and the simulation can be realized here, the various cable faults can be rapidly simulated by controlling the corresponding switches in the first group of switches 41, and the training process can be realized to simulate various circuit faults; in the examination process, the real operation examination can be rapidly carried out, and the examination efficiency is improved. Further, the switches of the first group of switches 41 do not interfere with each other, so that the training and the examination of the short circuit can be rapidly performed.
A can also be simulated by controlling the corresponding switch of the second group of switches 42 to be switched off1Phase, B1Phase, C1The condition of phase and zero line N open circuit leads to the condition of open phase, can simulate out the condition of open phase in the cable fault.
All conditions in the cable fault can be simulated by controlling the first group of switches 41 and the second group of switches 42, and during training and examination of operation and maintenance personnel, the equipment provided by the embodiment can be directly controlled, so that the cable fault knowledge can be comprehensively known and simulation operation can be performed, and the technical problems of low training and examination speed and extremely low working efficiency of the operation and maintenance personnel in the prior art are solved.
Wherein the first group of switches 41 includes a first switch 411, a second switch 412, a third switch 413, a fourth switch 414, a fifth switch, a sixth switch 416, a seventh switch 417, an eighth switch 418, a ninth switch 419, and a tenth switch 410;
the first switch 411, the second switch 412, the third switch 413, the fourth switch 414, the fifth switch, the sixth switch 416, the seventh switch 417, the eighth switch 418, the ninth switch 419 and the tenth switch 410 are arranged in a uniform horizontal row on the operation panel 4,
the x is 6, a first connection end of the first junction box 21 is connected to a first connection end of the second junction box 22 through a first switch 411, a second connection end of the first junction box 21 is connected to a first connection end of the third junction box 23 through a second switch 412, a third connection end of the first junction box 21 is connected to a first connection end of the fourth junction box 24 through a third switch 413, and a fourth connection end of the first junction box 21 is connected to a first connection end of the fifth junction box 25 through a fourth switch 414;
a second connecting end of the second junction box 22 is connected to a second connecting end of the third junction box 23 through a fifth switch, a third connecting end of the second junction box 22 is connected to a second connecting end of the fourth junction box 24 through a sixth switch 416, and a fourth connecting end of the second junction box 22 is connected to a second connecting end of the fifth junction box 25 through a seventh switch 417;
a third connecting end of the third terminal box 23 is connected to a third connecting end of the fourth terminal box 24 through an eighth switch 418, and a fourth connecting end of the third terminal box 23 is connected to a third connecting end of the fifth terminal box 25 through a ninth switch 419;
a fourth connecting end of the fourth junction box 24 is connected to a fourth connecting end of the fifth junction box 25 through a tenth switch 410;
the second set of switches 42 includes an eleventh switch 421, a twelfth switch 422, a thirteenth switch 423, and a fourteenth switch 424, the fifth connecting end of the first junction box 21 is connected to the first connecting end of the sixth junction box 26 through the eleventh switch 421, the fifth connecting end of the second junction box 22 is connected to the first connecting end of the seventh junction box 27 through the twelfth switch 422, the fifth connecting end of the third junction box 23 is connected to the first connecting end of the eighth junction box 28 through the tenth switch 423, and the fifth connecting end of the fourth junction box 24 is connected to the first connecting end of the ninth junction box 29 through the fourteenth switch 424.
The eleventh switch 421, the twelfth switch 422, the thirteenth switch 423 and the fourteenth switch 424 are arranged on the operation panel 4 transversely behind the tenth switch 410 in a uniform order, so that the operation and maintenance personnel can operate the switches.
All common situations in cable faults can be simulated by controlling the first switch 411, the second switch 412, the third switch 413, the fourth switch 414, the fifth switch, the sixth switch 416, the seventh switch 417, the eighth switch 418, the ninth switch 419, the tenth switch 410, the eleventh switch 421, the twelfth switch 422, the thirteenth switch 423 and the fourteenth switch 424, so that operation and maintenance personnel can learn and assess conveniently, the operation and maintenance personnel do not need to queue on site for practical operation and assessment, but the operation and maintenance personnel can be rapidly assessed through the equipment provided by the embodiment, and therefore the speed of assessment work and the efficiency of assessment work are improved.
The two connecting ends of the first junction box 21 and the two connecting ends of the second junction box 22 which are connected in series through the voltmeter 44 and the third group of switches 43 are also connected through the voltmeter 44 and the third group of switches 43, and the voltmeter 44 and the third group of switches 43 are both installed on the operation panel 4. By closing the third set of openingsOff 43, A can be measured by the voltmeter 441Phase B1The open-circuit voltage of the phase can be used as the display of dangerous conditions through the measured voltage value of the open-circuit voltage, and can remind operation and maintenance personnel of the dangerous condition that the cable has faults and the condition that the cable faults need to be carefully treated in the training process.
The third set of switches 43 comprises a voltmeter 44 switch 431, and the sixth connection terminal of the first junction box 21 is connected to the sixth connection terminal of the second junction box 22 through the voltmeter 44 and the voltmeter 44 switch 431; by closing the switch 431 of the voltmeter 44, the voltmeter 44 is equivalently connected to two phases of the three-phase power supply, the current between the two phases is measured, and the open-circuit current of the two phases can be simulated through the display of the voltmeter 44, so that the danger after dangerous operation of operation and maintenance personnel and cable faults can be warned through simulation in training, and the numerical value can be visually presented through the voltmeter 44.
The connecting terminal of the third terminal box 23 and the connecting terminal of the fourth terminal box 24 are connected in series through an ammeter 461 and a fourth set of switches 45, and the ammeter 461 and the fourth set of switches 45 are both installed on the operation panel 4. C can be measured by closing the fourth set of switches 452Phase and zero line N2The current value of the short circuit is usually dangerous in the real situation if the phase-to-zero short circuit occurs, and the operation and maintenance personnel must know the situation and know the change of the current value caused by the fault, which is also an important item in the training of the operation and maintenance personnel. Specifically, the fourth switch 45 includes an ammeter 461 switch 451, and the sixth connection end of the third terminal box 23 is connected to the sixth connection end of the fourth terminal box 24 through the ammeter 461 and the ammeter 461 switch 451. The current value under the condition of the phase zero short circuit can be displayed by controlling the switch 451 of the ammeter 461, so that the trained operation and maintenance personnel can visually display the dangerous condition.
The connection ends of the sixth junction box 26, the connection ends of the seventh junction box 27, and the connection ends of the eighth junction box 28, and the connection ends of any two junction boxes 2 at the connection ends of the ninth junction box 29 are connected by a first group of variable resistors 48, and the first group of variable resistors 48 are mounted on the operation panel 4. Through adjusting first group variable resistance 48, can simulate the condition after cable circuit inserts high resistance or low resistance, the condition of inserting through the resistance is the problem that cable junction often appears, can provide the condition of more access high resistance or low resistance, this is also the condition of the interphase fault that mainly leads to because the wiring error, normal condition can also be simulated simultaneously, insert resistance between phase zero, can simulate the condition of correct wiring, simulate through the condition of high resistance low resistance equally, thereby provide more comprehensive simulation, be closer to the fault condition of reality operation, the correct condition has also been simulated simultaneously, the equipment that this embodiment provided can be more comprehensive improvement fortune dimension personnel's skill level.
Furthermore, a fifth group of switches 47 is further connected between two connecting ends of any two terminal boxes 2 at two connecting ends of the sixth terminal box 26, the seventh terminal box 27, and the eighth terminal box 28, and the fifth group of switches 47 is installed on the operation panel 4. The conditions of phase-to-phase short circuit and normal circuit under the condition that the resistor is connected in can be simulated more comprehensively by controlling the opening of the corresponding switch of the fifth group of switches 47, so that operation and maintenance personnel can know the safety of wiring and how to operate to improve the safety.
Specifically, the first set of variable resistors 48 includes a first variable resistor 481, a second variable resistor 482, a third variable resistor 483, a fourth variable resistor 484, a fifth variable resistor 485, and a sixth variable resistor 486, and the fifth set of switches 47 includes a first resistor switch 471, a second resistor switch 472, a third resistor switch 473, a fourth resistor switch 474, a fifth resistor switch 475, and a sixth resistor switch 476;
a second connection terminal of the sixth terminal box 26 is connected to a second connection terminal of the seventh terminal box 27 through a first resistor switch 471 and a first variable resistor 481, the third connecting terminal of the sixth terminal box 26 is connected to the second connecting terminal of the eighth terminal box 28 through the second resistor switch 472 and the second variable resistor 482, the fourth connecting terminal of the sixth junction box 26 is connected to the second connecting terminal of the ninth junction box 29 through a third resistor switch 473 and a third variable resistor 483, the third connecting terminal of the seventh terminal block 27 is connected to the third connecting terminal of the eighth terminal block 28 through the fourth resistor switch 474 and the fourth variable resistor 484, the fourth connecting terminal of the seventh terminal box 27 is connected to the second connecting terminal of the ninth terminal box 29 through the fifth resistor switch 475 and the fifth variable resistor 485, a fourth connecting end of the eighth junction box 28 is connected to a third connecting end of the ninth junction box 29 through a sixth resistance switch 476 and a sixth variable resistor 486;
the high-resistance simulation or the low-resistance simulation of the interphase short circuit of the circuit can be correspondingly operated by closing the first resistance switch 471, the high-resistance simulation or the low-resistance simulation of the interphase short circuit of the circuit can be correspondingly operated by closing the second resistance switch 472, the high-resistance simulation or the low-resistance simulation of the interphase short circuit of the circuit can be correspondingly operated by closing the third resistance switch 473, the high-resistance simulation or the low-resistance simulation of the normal circuit can be correspondingly operated by closing the fourth resistance switch 474, the high-resistance simulation or the low-resistance simulation of the interphase short circuit of the circuit can be correspondingly operated by closing the fifth resistance switch 475, the high-resistance simulation or the low-resistance simulation of the normal circuit can be correspondingly operated by closing the fifth resistance switch 475, and the high-resistance simulation or the low-resistance simulation of the normal circuit can be correspondingly operated by closing the sixth resistance switch 476. Through the operation, the inter-phase short circuit and the normal circuit can be simulated after the access resistor, the inter-phase short circuit possibly encountered in the actual situation can be more comprehensively displayed, meanwhile, the normal circuit can be simulated for operation and maintenance personnel to learn, and the problem that the operation and maintenance personnel are unfamiliar with the normal circuit due to circuit training and checking in various cable faults is avoided.
At least one connecting end of the remaining eighth junction box 28 is connected to the first discharging contact 493 through a sixth group of switches, and at least one connecting end of the ninth junction box 29 is connected to the seventh group of switchesAnd the second discharge contact 494 is connected to the switch of the sixth group, the switch of the seventh group, the first discharge contact 493 and the second discharge contact 494 are all installed on the operation panel 4. The position of the first discharge contact 493 is different from the position of the second discharge contact 494 by a predetermined distance. When the sixth group of switches and the seventh group of switches are closed, output B2 First discharge contact 493 for the phase current and the connecting neutral conductor N2The second discharge contacts 494 generate electric sparks, and the danger of a fault circuit is shown to operation and maintenance personnel through the display of the electric sparks. The cable fault alarm device provides visual display of possible consequences in cable faults for operation and maintenance personnel, and reminds the operation and maintenance personnel of paying attention to risks caused by the cable faults in daily work. The apparatus provided in this embodiment further provides for the electrical sparks generated by the first discharge contact 493 and the second discharge contact 494 to provide an indication of the danger of cable failure. The preset distance is set according to actual conditions, the intensity of the actual discharge spark and safety considerations.
Specifically, the sixth group of switches includes a first discharge switch 491, and a fifth connection end of the eighth junction box 28 is connected to the first discharge contact 493 through the first discharge switch 491;
the seventh group of switches includes a second discharge switch 492, and the sixth connection end of the ninth terminal block 29 is connected to the second discharge contact 494 through the second discharge switch 492. By closing the first discharge switch 491 and the second discharge switch 492 at the same time, the first discharge contact 493 and the second discharge contact 494 break through the dielectric air and act between the first discharge contact 493 and the second discharge contact 494 due to the existence of the preset distance, so that electric sparks are generated, and the danger caused by dangerous operation and cable fault can be reminded to operation and maintenance personnel in training.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A cable fault simulation training device is characterized by comprising an operation panel and a junction box, wherein the ratio of the number of the connecting ends of the junction box to the number of the connecting ends of the junction box is 1: x, and x is more than or equal to 5;
the number of the junction boxes is not less than five, and all the junction boxes are connected with one end A including the connection end1A first terminal box and a connecting end of the phase are connected into B1Second terminal box of phase, connecting end access C1A third terminal box of the phase, one end of the connection is connected with a zero line N1The second terminal box and the fifth terminal box are connected with one end connected with a ground wire O, two connecting ends of the first terminal box, two connecting ends of the second terminal box, two connecting ends of the third terminal box, two connecting ends of the fourth terminal box and two connecting ends of the fifth terminal box are respectively connected through a first group of switches, at least one connecting end of the rest of the first terminal boxes, at least one connecting end of the rest of the second terminal boxes, at least one connecting end of the rest of the third terminal boxes and at least one connecting end of the rest of the fourth terminal boxes are respectively connected through a second group of switches, and the first group of switches and the second group of switches are both installed on the operation panel.
2. The cable fault simulation training apparatus as claimed in claim 1, further comprising a connecting terminal of the first junction box and a connecting terminal of the second junction box connected in series by a voltmeter and a third set of switches, both of which are mounted on an operation panel.
3. The cable fault simulation training apparatus as claimed in claim 2, further comprising a connection terminal of the third junction box and a connection terminal of the fourth junction box connected in series by a current meter and a fourth set of switches, both of which are mounted on an operation panel.
4. The cable fault simulation training apparatus of claim 3, wherein the junction box further comprises a connection end access A2A sixth junction box of the phase, one end of which is connected with the B2A seventh terminal box of the phase, one end of the connection is connected with the C2The eighth terminal box of the phase and the zero line N connected with one end2The connection ends of any two of the connection ends of the sixth junction box, the connection ends of the seventh junction box, the connection ends of the eighth junction box and the connection ends of the ninth junction box are respectively connected through a first group of variable resistors, and the first group of variable resistors are installed on the operation panel.
5. The cable fault simulation training device as claimed in claim 4, wherein a fifth group of switches are connected between any two connecting ends of the connecting end of the sixth junction box, the connecting end of the seventh junction box, the connecting end of the eighth junction box and the connecting end of the ninth junction box, and the fifth group of switches are mounted on an operation panel.
6. The cable fault simulation training device as claimed in claim 5, wherein at least one connecting end of the remaining eighth junction boxes is connected with the first discharge contact through a sixth group of switches, at least one connecting end of the ninth junction box is connected with the second discharge contact through a seventh group of switches, the sixth group of switches, the seventh group of switches, the first discharge contact and the second discharge contact are all mounted on the operation panel, and the position of the first discharge contact is different from the position of the second discharge contact by a preset distance.
7. The cable fault simulation training apparatus as claimed in claim 6, further comprising: the first group of switches comprises a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, a seventh switch, an eighth switch, a ninth switch and a tenth switch;
the x is 6, a first connecting end of the first junction box is connected with a first connecting end of the second junction box through a first switch, a second connecting end of the first junction box is connected with a first connecting end of the third junction box through a second switch, a third connecting end of the first junction box is connected with a first connecting end of the fourth junction box through a third switch, and a fourth connecting end of the first junction box is connected with a first connecting end of the fifth junction box through a fourth switch;
a second connecting end of the second junction box is connected with a second connecting end of the third junction box through a fifth switch, a third connecting end of the second junction box is connected with a second connecting end of the fourth junction box through a sixth switch, and a fourth connecting end of the second junction box is connected with a second connecting end of the fifth junction box through a seventh switch;
a third connecting end of the third junction box is connected with a third connecting end of the fourth junction box through an eighth switch, and a fourth connecting end of the third junction box is connected with a third connecting end of the fifth junction box through a ninth switch;
a fourth connecting end of the fourth junction box is connected with a fourth connecting end of the fifth junction box through a tenth switch;
the second group of switches comprises an eleventh switch, a twelfth switch, a thirteenth switch and a fourteenth switch, a fifth connecting end of the first junction box is connected with a first connecting end of the sixth junction box through the eleventh switch, a fifth connecting end of the second junction box is connected with a first connecting end of the seventh junction box through the twelfth switch, a fifth connecting end of the third junction box is connected with a first connecting end of the eighth junction box through the thirteenth switch, and a fifth connecting end of the fourth junction box is connected with a first connecting end of the ninth junction box through the fourteenth switch.
8. The cable fault simulation training apparatus according to claim 7, wherein the third set of switches includes a voltmeter switch, and the sixth terminal of the first terminal box is connected to the sixth terminal of the second terminal box through the voltmeter and the voltmeter switch;
the fourth group of switches comprise ammeter switches, and the sixth connecting ends of the third junction box are connected with the sixth connecting ends of the fourth junction box through the ammeter and the ammeter switches.
9. The cable fault simulation training apparatus of claim 8, wherein the first set of variable resistors comprises a first variable resistor, a second variable resistor, a third variable resistor, a fourth variable resistor, a fifth variable resistor, and a sixth variable resistor, and the fifth set of switches comprises a first resistor switch, a third resistor switch, a fourth resistor switch, a fifth resistor switch, and a sixth resistor switch;
the second connecting end of the sixth junction box is connected with the second connecting end of the seventh junction box through a first resistance switch and a first variable resistor, the third connecting end of the sixth junction box is connected with the second connecting end of the eighth junction box through a second resistance switch and a second variable resistor, the fourth connecting end of the sixth junction box is connected with the second connecting end of the ninth junction box through a third resistance switch and a third variable resistor, the third connecting end of the seventh junction box is connected with the third connecting end of the eighth junction box through a fourth resistance switch and a fourth variable resistor, the fourth connecting end of the seventh junction box is connected with the second connecting end of the ninth junction box through a fifth resistance switch and a fifth variable resistor, a fourth connecting end of the eighth junction box is connected with a third connecting end of the ninth junction box through a sixth resistance switch and a sixth variable resistor;
the sixth group of switches comprises a first discharge switch, and a fifth connecting end of the eighth junction box is connected with the first discharge contact through the first discharge switch;
the seventh group of switches comprises a second discharge switch, and a sixth connecting end of the ninth junction box is connected with the second discharge contact through the second discharge switch.
10. The cable fault simulation training device according to claim 9, further comprising a cabinet body, wherein a cabinet door is rotatably mounted on the cabinet body, the operation panel and the junction box are both mounted in the cabinet body, a first circular hole for connecting a first cable of a three-phase power supply and a second circular hole for connecting a simulation ground wire are formed in one side of the cabinet body, a third circular hole for connecting a second cable of the three-phase power supply is formed in the other side of the cabinet body, and the A is a first circular hole1Phase, B1Phase, C1Phase and zero line N1The first cable is connected into the cabinet body; a is described2Phase, B2Phase, C2Phase and zero line N2The grounding wires O are connected into the cabinet body through a simulation grounding wire.
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| CN202010255467.6A CN111276030A (en) | 2020-04-02 | 2020-04-02 | Cable fault simulation training device |
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| CN202010255467.6A CN111276030A (en) | 2020-04-02 | 2020-04-02 | Cable fault simulation training device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111951648A (en) * | 2020-08-12 | 2020-11-17 | 广东电网有限责任公司广州供电局 | Three-phase four-wire system electric energy meter wiring demonstration device |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111951648A (en) * | 2020-08-12 | 2020-11-17 | 广东电网有限责任公司广州供电局 | Three-phase four-wire system electric energy meter wiring demonstration device |
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