CN110687482A - Visual secondary circuit comprehensive detector - Google Patents
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- CN110687482A CN110687482A CN201911071458.5A CN201911071458A CN110687482A CN 110687482 A CN110687482 A CN 110687482A CN 201911071458 A CN201911071458 A CN 201911071458A CN 110687482 A CN110687482 A CN 110687482A
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- 238000010276 construction Methods 0.000 abstract description 5
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- 238000006467 substitution reaction Methods 0.000 description 2
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Abstract
The invention relates to the field of secondary circuit detection of a transformer substation, in particular to a visual comprehensive secondary circuit detector. The intelligent control system comprises a host machine and a sub machine, wherein the host machine is provided with four main wiring terminals, four on-off indicating lamps, four jumper wiring holes, a CT primary wiring terminal, a CT secondary wiring terminal, a homopolar light emitting diode, a reverse polarity light emitting diode, a display screen, a host machine sound box, a host machine microphone, a trigger button and a host machine public end, and a host machine control unit and a host machine power supply are arranged in the host machine; the sub-machine is provided with four sub-wiring terminals, a sub-machine sound box, a sub-machine microphone, a camera and a sub-machine common terminal, and a sub-machine control unit and a sub-machine power supply are arranged in the sub-machine. The invention can realize that the polarity test work of the cable wire and the current transformer is carried out before and after the connection and overhaul in the construction of the secondary loop control cable of the transformer substation, reduces the risk in the working process, is convenient for debugging teams and groups to carry out the test work and improves the construction efficiency.
Description
Technical Field
The invention relates to the field of secondary circuit detection of a transformer substation, in particular to a visual comprehensive secondary circuit detector.
Background
The relay protection secondary system of the transformer substation plays an important role in ensuring the safe and stable operation of the primary system, and the secondary circuit breaks down to directly influence the safe operation of the power system. Therefore, the mounting process of the secondary circuit and the correctness of the circuit wiring are particularly important, and the correct judgment of the secondary circuit wiring needs to be realized in practice without tiger, carelessness and laziness.
1. In the construction of a secondary loop control cable of a transformer substation, cable alignment is an important process, and the cable alignment method is mainly characterized in that the number of cores is large (more than 24 cores), the single core is taken as a unit, and the length of the cable is dozens of meters to hundreds of meters. The alignment of the control cable is performed in field practice, the alignment of the control cable is one-by-one, usually, a public line is determined, one end of the public line is in short circuit with a tested core, the other end of the public line is tested between the public line and an unknown core by a test lamp until the unknown core is determined after the lamp is on, then personnel at two ends are in contact with each other by telephone, a mark is put on the public line, the searching operation of the next unknown core is performed, and then the next unknown core is tested.
2. The current transformer is an important component of an electric power system, and is widely applied to the aspects of relay protection, electric energy metering, remote measurement and control, system fault recording and the like. The transformation ratio and the polarity of the current transformer are two important characteristics of the current transformer, and whether the transformation ratio and the polarity of the current transformer directly influence the accuracy of relay protection, electric energy metering, remote measurement and control and system fault recording, and even influence the safe and stable operation of a power system.
The polarity test of the current transformer is required before and after handover and overhaul, so that the polarity test is required before commissioning, because the polarity test is carried out to prevent the wrong polarity during wiring, the wrong action of a protection device is caused on a relay protection circuit and a metering circuit, and the measurement cannot be carried out correctly. In addition, in the power test, regardless of the old standard or the new rule, the field transformation ratio inspection test during the switching of the current transformer and after the replacement of the winding is regarded as an important test item. Although the accuracy of the transformation ratio of the current transformer is guaranteed by a manufacturer, errors (mostly tap errors) can be occasionally checked in field tests due to various reasons, so field polarity check becomes an item which is not changed for years.
The two tests are widely used in field practice, but have the following problems:
① in the test process, the minimum site is more than four people, if the large site is due to the cross work of each team, the noise is large, the mutual connection is very troublesome and inconvenient, and the mobile phone and the walkie-talkie are not allowed to be used in the control room of the operating transformer substation.
② the field personnel are more, the workload is large, the interval is easy to go wrong, and the operation equipment is touched by mistake.
③ testing the polarity of the current transformer, when the dry battery is short-circuited, the dry battery discharges rapidly, the loss is large, the service life is short, the residual waste dry battery pollutes the environment and can not be used continuously;
④ the multimeter reads a flash of data and is not easy to determine if the polarity connection is correct.
Disclosure of Invention
The invention provides a visual secondary circuit comprehensive detector for solving various problems in secondary circuit detection of the conventional transformer substation.
The invention is realized by the following technical scheme: a visual secondary circuit comprehensive detector comprises a host machine and a sub machine,
the main machine is provided with four main wiring terminals, four on-off indicating lamps, four jumper wiring holes, a CT primary wiring terminal, a CT secondary wiring terminal, a homopolar light-emitting diode, a reverse polarity light-emitting diode, a display screen, a main machine sound box, a main machine microphone, a trigger button and a main machine public end, and a main machine control unit and a main machine power supply are arranged in the main machine;
the main machine power supply supplies power for the main machine control unit, the display screen, the main machine sound box and the main machine microphone respectively, the main machine sound box and the display screen are connected to the output end of the main machine control unit respectively, the main machine microphone is connected to the input end of the main machine control unit, four main wiring terminals are connected to the positive electrode of the main machine power supply after being connected with four on-off indicating lamps in series respectively, the negative electrode of the main machine power supply is connected to the common end of the main machine, a wiring terminal is connected to the loop of each main wiring terminal and the on-off indicating lamp in parallel, and four jumper wiring holes are;
the CT primary wiring end is connected with the trigger button and the host power supply in series, and the homopolar light-emitting diode and the reversed polarity light-emitting diode are respectively connected to the CT secondary wiring end in parallel;
the submachine is provided with four submachine wiring terminals, a submachine sound box, a submachine microphone, a camera and a submachine common terminal, and a submachine control unit and a submachine power supply are arranged in the submachine;
the sub-machine power supply supplies power for the sub-machine control unit, the sub-machine sound box, the sub-machine microphone and the camera respectively, the sub-machine microphone and the camera are connected to the input end of the sub-machine control unit respectively, the sub-machine sound box is connected to the output end of the sub-machine control unit, the four sub-wiring terminals are connected to the sub-machine control unit respectively, and the four sub-wiring terminals are connected to the sub-machine public end together.
As a further improvement of the technical scheme of the invention, a main machine power switch and a sub machine power switch are respectively arranged on the main machine and the sub machine.
The visual type secondary circuit comprehensive detector can achieve polarity test work of cable alignment and a current transformer before and after handover and overhaul in the construction of the secondary circuit control cable of the transformer substation, reduces risks in the working process, simplifies the test flow, facilitates debugging teams to test work, and improves the construction efficiency.
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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description 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 creative efforts.
Fig. 1 is an external view of the host according to the present invention.
Fig. 2 is an external view of the sub-machine according to the present invention.
Fig. 3 is a schematic diagram of the host.
Fig. 4 is another schematic diagram of the host.
Fig. 5 is a schematic diagram of the slave unit.
In the figure: 1-main engine, 11-main connecting terminal, 12-on-off indicator light, 13-jumper connecting hole, 14-main engine control unit, 15-main engine power supply, 16, 17-CT primary connecting terminal, 18, 19-CT secondary connecting terminal, 20-homopolar light emitting diode, 21-reversed polarity light emitting diode, 22-display screen, 23-main engine sound, 24-main engine microphone, 25-trigger button, 26-connecting terminal, 27-main engine public terminal and 29-main engine power supply switch.
3-handset, 31-handset terminal, 32-handset sound, 33-handset microphone, 34-camera, 35-handset control unit, 36-handset power supply, 37-handset power switch and 38-handset public terminal.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The embodiment provides a visual secondary circuit comprehensive detector, which comprises a host machine 1 and a sub-machine 3,
the main machine 1 is provided with four main wiring terminals 11, four on-off indicator lamps 12, four jumper wiring holes 13, CT primary wiring terminals 16 and 17, CT secondary wiring terminals 18 and 19, homopolar light-emitting diodes 20, reversed polarity light-emitting diodes 21, a display screen 22, a main machine sound 23, a main machine microphone 24, a trigger button 25 and a main machine public end 27, and a main machine control unit 14 and a main machine power supply 15 are arranged in the main machine 1;
the main machine power supply 15 respectively supplies power to the main machine control unit 14, the display screen 22, the main machine sound 23 and the main machine microphone 24, the main machine sound 23 and the display screen 22 are respectively connected to the output end of the main machine control unit 14, the main machine microphone 24 is connected to the input end of the main machine control unit 14, the four main wiring terminals 11 are respectively connected with the four on-off indicating lamps 12 in series and then connected to the positive electrode of the main machine power supply 15, the negative electrode of the main machine power supply 15 is connected to a main machine public end 27, a wiring terminal 26 is connected to each main wiring terminal 11 and a loop of the on-off indicating lamps 12 in parallel, and the four jumper wiring holes 13 are connected to;
the CT primary terminals 16 and 17 are connected with the trigger button 25 and the host power supply 15 in series, and the homopolar light-emitting diode 20 and the reversed polarity light-emitting diode 21 are respectively connected with the CT secondary terminals 18 and 19 in parallel;
the sub-machine 3 is provided with four sub-wiring terminals 31, a sub-machine sound box 32, a sub-machine microphone 33, a camera 34 and a sub-machine common terminal 38, and the sub-machine 3 is internally provided with a sub-machine control unit 35 and a sub-machine power supply 36;
the handset power supply 36 supplies power to the handset control unit 35, the handset sound 32, the handset microphone 33 and the camera 34 are connected to the input end of the handset control unit 35, the handset sound 32 is connected to the output end of the handset control unit 35, the four sub wiring terminals 31 are connected to the handset control unit 35, and the four sub wiring terminals 31 are connected to the handset common end 38.
When the cable is aligned, the host machine 1 is arranged at one end of a cable core to be tested, a worker is arranged at the host machine 1, the host machine public end 27 is connected to the ground wire of the cable to be tested, the submachine 3 is arranged at the other end of the cable core to be tested, a worker is arranged at the submachine 3, the submachine public end 38 is connected to the ground wire of the cable to be tested, when the same cable core is tested, the corresponding on-off indicator lamp 12 is turned on, and otherwise, the on-off indicator lamp 12 is turned off.
When the cable tester is used, two workers stand at two ends of a cable to be tested respectively, four cable cores are inserted in a main wiring terminal 11 on a host machine 1 at random, four cable cores are also inserted in a sub wiring terminal 31 of a sub machine 3 at random, if an on-off indicator lamp is not on, the two ends of the cable tester belong to different cable cores, the workers at the host machine 1 replace other cable cores to try, and the workers at the sub machine 1 do not need to operate; if at least one on-off indicator light 12 emits light, it indicates that the corresponding cable core is the same core, then the cable cores of other extinguished on-off indicating lamps 12 are pulled out until the four on-off indicating lamps 12 on the main machine 1 are all lightened, meanwhile, the jumper wire connecting holes 13 and the main connecting terminals 11 are connected together through wires one by one to realize the connection of voice and image functions, the staff at the submachine 3 numbers the cable cores on the submachine 3, the staff at the submachine 3 pulls out the first cable core, one of the on-off indicator lamps 12 is turned off, the display screen 22 turns off the image, the worker at the host 1 informs the on-off indicator lamp 12 corresponding to the worker at the sub machine 3 to be turned off through the host microphone 24 and the sub machine sound 32, the worker at the sub machine 3 informs the number corresponding to the worker at the host 1 through the sub machine microphone 33 and the host sound 23, and the host 1 is marked; after the workers at the host machine 1 and the submachine 3 pull out two cable cores, other two cable cores are inserted at will until all the on-off indicating lamps 12 emit light, and the steps are repeated. In this embodiment, two wire cores are required for realizing the voice function, and four wire cores are required for realizing the visual function. The visual and voice functions can be realized by utilizing the cable cores to be checked, an interphone is omitted, the visual function can also supervise the functions of mis-wiring and mis-touching the operation equipment at the submachine 3, particularly the lighting function when the submachine works at night; some job sites also have poor lighting and are conveniently illuminated by the display screen 22.
After numbering all cable cores, connecting CT primary terminals 16 and 17 to one secondary winding of the current transformer, connecting CT secondary terminals 18 and 19 to the other secondary winding of the current transformer, pressing a trigger button 25, and if a light-emitting diode 20 with the same polarity flickers, determining the polarity is the same polarity; if the reversed polarity LED 21 is flashing, it is reversed polarity. In this embodiment, the light colors of the leds with the same polarity 20 and the leds with the opposite polarity 21 are different, so as to be convenient for distinguishing. The specific homopolar led 20 is green and the reverse-polar led 21 is red. The function is practical, can examine CT polarity directly, and some problems in the scene can directly be judged to solve.
In specific implementation, the master unit 1 and the slave unit 3 are respectively provided with a master unit power switch 29 and a slave unit power switch 37.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (2)
1. A visual secondary loop comprehensive detector is characterized by comprising a host (1) and a sub-machine (3),
the main machine (1) is provided with four main wiring terminals (11), four on-off indicating lamps (12), four jumper wiring holes (13), CT primary wiring terminals (16 and 17), CT secondary wiring terminals (18 and 19), homopolar light-emitting diodes (20), reversed polarity light-emitting diodes (21), a display screen (22), a main machine sound box (23), a main machine microphone (24), a trigger button (25) and a main machine public end (27), and a main machine control unit (14) and a main machine power supply (15) are arranged in the main machine (1);
the main machine power supply (15) respectively supplies power to the main machine control unit (14), the display screen (22), the main machine sound box (23) and the main machine microphone (24), the main machine sound box (23) and the display screen (22) are respectively connected to the output end of the main machine control unit (14), the main machine microphone (24) is connected to the input end of the main machine control unit (14), four main wiring terminals (11) are respectively connected to the anode of the main machine power supply (15) after being connected with four on-off indicating lamps (12) in series, the cathode of the main machine power supply (15) is connected to the main machine public end (27), a wiring terminal (26) is connected to a loop of each main wiring terminal (11) and each on-off indicating lamp (12) in parallel, and four jumper wiring holes (13) are connected to the main machine control unit (14;
the CT primary terminals (16, 17) are connected with the trigger button (25) and the host power supply (15) in series, and the homopolar light-emitting diode (20) and the reverse polarity light-emitting diode (21) are respectively connected to the CT secondary terminals (18, 19) in parallel;
the sub-machine (3) is provided with four sub-wiring terminals (31), a sub-machine sound box (32), a sub-machine microphone (33), a camera (34) and a sub-machine common terminal (38), and a sub-machine control unit (35) and a sub-machine power supply (36) are arranged in the sub-machine (3);
the sub-machine sound box is characterized in that a sub-machine power supply (36) supplies power to a sub-machine control unit (35), a sub-machine sound box (32), a sub-machine microphone (33) and a camera (34), the sub-machine microphone (33) and the camera (34) are connected to the input end of the sub-machine control unit (35) respectively, the sub-machine sound box (32) is connected to the output end of the sub-machine control unit (35), four sub-wiring terminals (31) are connected to the sub-machine control unit (35) respectively, and the four sub-wiring terminals (31) are connected to a sub-machine public end (38) together.
2. A visual secondary circuit comprehensive detector according to claim 1, characterized in that the main machine (1) and the sub machine (3) are respectively provided with a main machine power switch (29) and a sub machine power switch (37).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911071458.5A CN110687482B (en) | 2019-11-05 | 2019-11-05 | Visual secondary circuit comprehensive detector |
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| CN201911071458.5A CN110687482B (en) | 2019-11-05 | 2019-11-05 | Visual secondary circuit comprehensive detector |
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| CN110687482A true CN110687482A (en) | 2020-01-14 |
| CN110687482B CN110687482B (en) | 2021-09-24 |
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