CN220419372U - Wiring hanging rod for power transmission line parameter test - Google Patents
Wiring hanging rod for power transmission line parameter test Download PDFInfo
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- CN220419372U CN220419372U CN202320928289.8U CN202320928289U CN220419372U CN 220419372 U CN220419372 U CN 220419372U CN 202320928289 U CN202320928289 U CN 202320928289U CN 220419372 U CN220419372 U CN 220419372U
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- hanging rod
- finger
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- 238000012360 testing method Methods 0.000 title claims abstract description 45
- 230000005540 biological transmission Effects 0.000 title claims abstract description 25
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- 238000001514 detection method Methods 0.000 claims abstract description 13
- 230000005611 electricity Effects 0.000 claims abstract description 10
- 230000006698 induction Effects 0.000 claims abstract description 10
- 230000002159 abnormal effect Effects 0.000 claims abstract description 6
- 238000006073 displacement reaction Methods 0.000 claims abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 229910052573 porcelain Inorganic materials 0.000 claims description 3
- 230000008859 change Effects 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model discloses a wiring hanging rod for testing parameters of a power transmission line, which comprises a hanging rod and an automatic grounding device arranged on the hanging rod; the hanging rod is provided with a detection device, and an audible and visual alarm device is arranged in the automatic grounding device; the automatic grounding device is internally provided with a grounding disconnecting link, the grounding disconnecting link comprises disconnecting link contact fingers and disconnecting link contacts which are mutually separated, the disconnecting link contact fingers are connected with a ground wire, and the disconnecting link contacts are connected with a test wire to be tested; when the detecting device detects abnormal electrical signals on the test line to be detected, the audible and visual alarm equipment gives an alarm, the displacement of the disconnecting link contact contacts with the disconnecting link contact fingers, and induction electricity on the test line to be detected is led to the ground through the ground wire.
Description
Technical Field
The utility model belongs to the technical field of power transmission line parameter testing, and particularly relates to a wiring hanging rod for power transmission line parameter testing.
Background
The power transmission line is an important component of the power system, and the power frequency parameters of the power transmission line generally comprise direct current resistance, positive sequence impedance, zero sequence impedance, positive sequence capacitance, zero sequence capacitance, coupling capacitance and mutual inductance impedance between multiple parallel power transmission lines. The parameters are basic data which are required to be mastered by the operation of the power grid, and the accuracy of the parameters directly influences the accuracy of the operation mode calculation of the power system and the relay protection setting value calculation. In order to ensure the stability of the common frequency parameters of the power transmission line, the power transmission line parameters are required to be tested.
However, there is a potential safety hazard in the transmission line parameter testing environment, wherein the largest dangerous source is the induced injury of the same-pole erection operation line, and the largest dangerous source of the line parameter testing is the induced injury of the same-pole erection operation line.
The induced electricity mainly exists near the line power failure of the parallel, crossed and crossed live lines or the line parallel and frame part of the same tower, and the line-in interval isolating switch, door frame and the like. From the previous condition of the induction voltage measurement test, when the ground wire is not hung after power failure, the highest induction voltage of the 500 kilovolt bus can reach 17.7 kilovolts, the highest induction voltage of the 220 kilovolt line can reach 10.8 kilovolts, the highest induction voltage of the 66 kilovolt line can reach 2.9 kilovolts, and the over-high induction voltage can threaten the personal safety of test personnel and the normal operation of equipment. In the actual transmission line parameter testing process, casualties caused by contact of testers with induced electricity occur.
In conclusion, how to prevent the risk source of induced injury in the line parameter test has important significance.
Disclosure of Invention
The utility model aims to provide a wiring hanging rod for testing parameters of a power transmission line, which can prevent a tester from touching induced electricity when testing the parameters of the line.
The wiring hanging rod for the power transmission line parameter test comprises a hanging rod and an automatic grounding device arranged on the hanging rod; the hanging rod is provided with a detection device, and an audible and visual alarm device is arranged in the automatic grounding device; the automatic grounding device is internally provided with a grounding disconnecting link, the grounding disconnecting link comprises a disconnecting link contact finger and a disconnecting link contact, the two are separated in a conventional state, the disconnecting link contact finger is connected with a ground wire, and the disconnecting link contact is connected with a test wire to be tested; when the detecting device detects abnormal electrical signals on the test line to be detected, the audible and visual alarm equipment gives an alarm, the displacement of the disconnecting link contact contacts with the disconnecting link contact fingers, and induction electricity on the test line to be detected is led to the ground through the ground wire.
In one embodiment of the above hanging rod, the hanging rod includes a hanging rod main body, a clamping plate elastic sheet, a clamping plate spring and the detection device; the hanging rod main body is a U-shaped hook and a long rod with one end extended; two groups of clamping plates are symmetrically arranged in the bent hook of the U-shaped hook, and each clamping plate comprises a clamping plate elastic sheet and a clamping plate spring; the clamping plate spring plate and the clamping plate spring are both hinged on the rotating shaft of the U-shaped hook; the clamping plate spring piece is abutted against the center of the hook under the action of the clamping plate spring; the back of the U-shaped hanging rod is provided with a detection device.
In one embodiment of the above hanging rod, the automatic grounding device includes a case and the grounding switch disposed in the case; the top surface of the box body is fixedly connected with the hanging rod; the bottom surface of the box body is fixedly connected with an insulating connecting rod through an insulating rubber mat; the cavity at the top end of the box body is provided with the audible and visual alarm equipment, a controller module, a controller input end and a device power supply; the audible and visual alarm equipment is connected with an alarm lamp and a loudspeaker.
In one embodiment of the hanging rod, the disconnecting link contact finger comprises a contact finger base, a cam, a contact finger fixing rod and a contact finger; the side surface of the contact finger base is grooved, and the cam is fixed in the groove; the contact finger fixing rod is fixed on the flexible cam; the height-adjustable contact finger is fixed on the contact finger fixing rod through the adjusting screw and the locking nut.
In one embodiment of the hanging rod, the touch finger comprises a touch sheet, a spring, a guide rod, an insulating sleeve, a fixing plate, a touch finger output sheet, a baffle plate and a touch guide electric tube; the contact pieces can be divided into an inner contact piece and an outer contact piece; a guide rod is arranged between the inner contact piece and the outer contact piece, and a spring is sleeved on the guide rod; the spring pushes the inner contact and the outer contact outwards and separates in a natural state; a porcelain insulating sleeve is arranged at the contact position of the guide rod and the outer contact piece; the two contact pieces are oppositely arranged, and a Z-shaped fixing plate is arranged on the outer side of each contact piece to fix the contact piece, the spring and the guide rod; the outer contact piece is connected with a contact finger output piece which is simultaneously connected with guide rods at two sides; the baffle plate limits and presses the touch finger output piece on the touch guide electric tube.
In one embodiment of the above hanging rod, a motor output rod is disposed at the opening side of the contact finger, the motor is fixed outside the box, and the motor output rod is located in the box and connected with the motor.
In one embodiment of the hanging rod, the disconnecting link contact is arranged on the motor output rod and comprises a contact, a supporting plate and a contact conducting tube; the contact consists of copper plates, and two side edges of the contact are fixed through support plates; the tail ends of the two side edges are communicated with the contact conducting tube.
In one embodiment of the above hanging rod, the device fixing rod is sleeved at the end of the insulating connecting rod, and an insulating handle for increasing friction is arranged at the bottom end of the device fixing rod.
The beneficial effects of the utility model are as follows:
the device is provided with a detection device, an audible and visual alarm device and an automatic grounding device, and can detect that the induced voltage is abnormal and exceeds the standard and give audible and visual alarm when the initial wiring of the line parameter test and the change wiring of the change test item are changed, so that the line parameter test line is effectively grounded automatically; the danger that the testers touch the induced electricity is effectively avoided, and the personal safety of the testers and the normal operation of the equipment are ensured.
Drawings
Fig. 1 is a schematic structural view of a wire hanging rod according to an embodiment of the present utility model.
Fig. 2 is a schematic cross-sectional view of the automatic grounding device.
Fig. 3 is a schematic structural diagram of the grounding switch in fig. 2.
Fig. 4 is a schematic structural diagram of the grounding switch contact finger in fig. 3.
Fig. 5 is a schematic structural view of the grounding switch contact of fig. 3.
Detailed Description
As shown in fig. 1, the wiring hanging rod for testing parameters of a power transmission line disclosed in the embodiment comprises a hanging rod 1, an automatic grounding device 2 and a device fixing rod 3.
The tail end of the hanging rod 1 is provided with an automatic grounding device 2, and the bottom end of the automatic grounding device is provided with a fixing rod 3.
The hanging rod 1 comprises a hanging rod main body 11, a clamping plate elastic sheet 12, a clamping plate spring 13 and a detection device 14.
The hanging rod main body 11 is a U-shaped hook and a long rod with one end extended. Two groups of clamping plates are symmetrically arranged in the bent hook of the U-shaped hook, and each clamping plate comprises a clamping plate elastic sheet 12 and a clamping plate spring 13. The clamping plate spring piece and the clamping plate spring are both hinged on the rotating shaft of the U-shaped hook. The clamping plate spring piece is abutted against the center of the hook under the action of the clamping plate spring.
The back of the U-shaped hanging rod is provided with a detection device 14 which can detect the induction voltage value of the tested line.
The long rod of the hanging rod main body is respectively provided with a test wire terminal and a grounding wire hook. The test wire terminal is used for fixing a test wire, and the ground wire hook is used for fixing a ground wire.
As shown in fig. 2, the automatic grounding device 2 includes a case and a grounding switch provided in the case.
The top surface of the box body is fixedly connected with the long rod of the hanging rod main body. The bottom surface of the box body is fixedly connected with an insulating connecting rod through an insulating rubber mat. The insulation rubber cushion and the insulation connecting rod play a role of isolating the electrified part of the hanging rod 1 and the automatic grounding rotating shaft 2, so that a tester is prevented from getting an electric shock during operation.
The cavity at the top end of the box body is provided with audible and visual alarm equipment, a controller module, a controller input end and a device power supply. The audible and visual alarm equipment is connected with an alarm lamp and a loudspeaker, a detection line connecting terminal is arranged outside the input end of the controller, and a motor power supply terminal is arranged outside the power supply of the device.
As shown in fig. 3, a grounding knife switch is arranged in the cavity at the bottom end of the box body. The grounding disconnecting link comprises a contact finger base 21, a cam 22, a contact finger fixing rod 23, a disconnecting link contact finger 24, a motor output rod 25 and a disconnecting link contact 26.
The finger base 21 is made of steel plate and is fixed to the side wall of the case by bolts. The contact finger base 21 is slotted on the side surface, and the cam 22 is fixed in the slot through a nut. The finger fixing lever 23 is fixed to the cam 22.
The cam is made of flexible materials, and when the follow-up knife switch is impacted or rapidly opened and closed, the cam can provide certain buffer for the finger-touching fixed rod and can reduce the vibration of the knife switch finger.
The disconnecting link contact finger 24 is fixed on the contact finger fixing rod 23 through an adjusting screw and a locking nut. The height of the knife switch contact finger can be adjusted through an adjusting nut.
As shown in fig. 4, the knife switch contact finger 24 includes a contact 241, a spring 242, a guide rod 243, an insulating sleeve 244, a fixing plate 245, a contact finger output piece 246, a baffle 247, and a contact guide tube 248.
The contact 241 is a shaped copper plate and can be divided into an inner contact and an outer contact. A guide rod 243 is arranged between the inner contact and the outer contact, and a spring 242 is sleeved on the guide rod. The spring can push the inner contact and the outer contact outwards and separate in a natural state.
A porcelain insulating sleeve 244 is provided at the contact position of the guide rod and the outer contact.
The two contact plates are oppositely arranged, and a Z-shaped fixing plate 245 is arranged on the outer side of each contact plate to fix the structures such as the contact plates, the springs and the guide rods.
The outer contact piece is connected with a contact finger output piece 246, and the contact finger output piece is simultaneously connected with guide rods at two sides.
The stop 247 positions the finger output pad against the contact guide tube 248. The contact guide electric tube is used for realizing the electric connection between the contact guide and the bottom flat cable.
The motor output rod 25 is arranged at the opening side of the knife switch contact finger 24, the motor is fixed outside the box body, and the motor output rod is positioned in the box body and connected with the motor.
As shown in fig. 5, the knife switch contact 26 is disposed on the motor output shaft and includes a contact 261, a support plate 262 and a contact conductive tube 263.
The contact 261 is composed of a copper plate, and both side edges thereof are fixed by a support plate 262; the ends of the two sides thereof are connected with the contact conductive tubes 263. The supporting plate is arranged to support the contact, so that the contact stability between the tail end of the contact and the conductive tube is enhanced.
The device fixing rod 3 is sleeved at the tail end of the insulating connecting rod, and the bottom end of the device fixing rod is provided with an insulating handle for increasing friction force.
The specific using steps of the wiring hanging rod are as follows:
1. the wiring hanging rod is hung on a power transmission line to be tested, and the detection device detects abnormal induction electric signals in the power transmission line.
2. An audible and visual alarm device of the device power supply sends out an alarm signal and simultaneously supplies power to the motor.
3. The motor rotates anticlockwise by 90 degrees after power is supplied to enable the contact on the grounding disconnecting link to be contacted with the contact finger, and the contact finger spring is compressed to fix the contact part.
4. The test wire is connected with the disconnecting link contact, and the grounding wire is connected with the disconnecting link contact finger. At the moment, the contact is contacted with the contact finger, and induced electricity on the test line flows to the ground through the ground wire, so that the danger that a tester touches the induced electricity when the line parameter test is performed is avoided.
5. The experimenter immediately stops the test and operates the grounding switch reset knob to enable the contact and the contact finger on the grounding switch to restore to the non-contact position.
The use of the wiring hanging rod has the advantages that:
the device is provided with a detection device, an audible and visual alarm device and an automatic grounding device, and can detect that the induced voltage is abnormal and exceeds the standard and give audible and visual alarm when the initial wiring of the line parameter test and the change wiring of the change test item are changed, so that the line parameter test line is effectively grounded automatically; the danger that the testers touch the induced electricity is effectively avoided, and the personal safety of the testers and the normal operation of the equipment are ensured.
Claims (8)
1. A wiring peg for transmission line parameter test, its characterized in that: the automatic grounding device comprises a hanging rod and an automatic grounding device arranged on the hanging rod;
the hanging rod is provided with a detection device, and an audible and visual alarm device is arranged in the automatic grounding device;
the automatic grounding device is internally provided with a grounding disconnecting link, the grounding disconnecting link comprises a disconnecting link contact finger and a disconnecting link contact, the two are separated in a conventional state, the disconnecting link contact finger is connected with a ground wire, and the disconnecting link contact is connected with a test wire to be tested;
when the detecting device detects abnormal electrical signals on the test line to be detected, the audible and visual alarm equipment gives an alarm, the displacement of the disconnecting link contact contacts with the disconnecting link contact fingers, and induction electricity on the test line to be detected is led to the ground through the ground wire.
2. The wiring harness for transmission line parameter testing as claimed in claim 1, wherein: the hanging rod comprises a hanging rod main body, a clamping plate elastic sheet, a clamping plate spring and the detection device;
the hanging rod main body is a U-shaped hook and a long rod with one end extended; two groups of clamping plates are symmetrically arranged in the bent hook of the U-shaped hook, and each clamping plate comprises a clamping plate elastic sheet and a clamping plate spring; the clamping plate spring plate and the clamping plate spring are both hinged on the rotating shaft of the U-shaped hook; the clamping plate spring piece is abutted against the center of the hook under the action of the clamping plate spring;
the back of the U-shaped hanging rod is provided with a detection device.
3. The wiring harness for transmission line parameter testing as claimed in claim 1, wherein: the automatic grounding device comprises a box body and the grounding switch arranged in the box body;
the top surface of the box body is fixedly connected with the hanging rod; the bottom surface of the box body is fixedly connected with an insulating connecting rod through an insulating rubber mat; the cavity at the top end of the box body is provided with the audible and visual alarm equipment, a controller module, a controller input end and a device power supply; the audible and visual alarm equipment is connected with an alarm lamp and a loudspeaker.
4. A wiring harness for transmission line parameter testing as claimed in claim 3 wherein: the disconnecting link contact finger comprises a contact finger base, a cam, a contact finger fixing rod and a contact finger;
the side surface of the contact finger base is grooved, and the cam is fixed in the groove; the contact finger fixing rod is fixed on the flexible cam; the height-adjustable contact finger is fixed on the contact finger fixing rod through the adjusting screw and the locking nut.
5. The wiring harness for transmission line parameter testing as claimed in claim 4, wherein: the touch finger comprises a touch sheet, a spring, a guide rod, an insulating sleeve, a fixing plate, a touch finger output sheet, a baffle plate and a touch guide electric tube;
the contact pieces can be divided into an inner contact piece and an outer contact piece; a guide rod is arranged between the inner contact piece and the outer contact piece, and a spring is sleeved on the guide rod; the spring pushes the inner contact and the outer contact outwards and separates in a natural state; a porcelain insulating sleeve is arranged at the contact position of the guide rod and the outer contact piece; the two contact pieces are oppositely arranged, and a Z-shaped fixing plate is arranged on the outer side of each contact piece to fix the contact piece, the spring and the guide rod; the outer contact piece is connected with a contact finger output piece which is simultaneously connected with guide rods at two sides; the baffle plate limits and presses the touch finger output piece on the touch guide electric tube.
6. A wiring harness for transmission line parameter testing as claimed in claim 3 wherein: the opening side of the contact finger is provided with a motor output rod, the motor is fixed outside the box body, and the motor output rod is positioned in the box body and connected with the motor.
7. The wiring harness for transmission line parameter testing as in claim 6 wherein: the disconnecting link contact is arranged on the motor output rod and comprises a contact, a supporting plate and a contact conducting tube;
the contact consists of copper plates, and two side edges of the contact are fixed through support plates; the tail ends of the two side edges are communicated with the contact conducting tube.
8. A wiring harness for transmission line parameter testing as claimed in claim 3 wherein: the device fixing rod is sleeved at the tail end of the insulating connecting rod, and an insulating handle for increasing friction force is arranged at the bottom end of the device fixing rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320928289.8U CN220419372U (en) | 2023-04-23 | 2023-04-23 | Wiring hanging rod for power transmission line parameter test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320928289.8U CN220419372U (en) | 2023-04-23 | 2023-04-23 | Wiring hanging rod for power transmission line parameter test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220419372U true CN220419372U (en) | 2024-01-30 |
Family
ID=89649683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320928289.8U Active CN220419372U (en) | 2023-04-23 | 2023-04-23 | Wiring hanging rod for power transmission line parameter test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220419372U (en) |
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2023
- 2023-04-23 CN CN202320928289.8U patent/CN220419372U/en active Active
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