CN114167306A - State monitoring device and method for grounding wire - Google Patents
State monitoring device and method for grounding wire Download PDFInfo
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- CN114167306A CN114167306A CN202111488951.4A CN202111488951A CN114167306A CN 114167306 A CN114167306 A CN 114167306A CN 202111488951 A CN202111488951 A CN 202111488951A CN 114167306 A CN114167306 A CN 114167306A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000012806 monitoring device Methods 0.000 title claims abstract description 17
- 238000012544 monitoring process Methods 0.000 claims abstract description 17
- 238000004891 communication Methods 0.000 claims description 29
- 238000012423 maintenance Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 6
- 238000004088 simulation Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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- 239000000565 sealant Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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- General Physics & Mathematics (AREA)
- Electric Cable Installation (AREA)
Abstract
The invention provides a state monitoring device and a state monitoring method of a grounding wire, wherein the state monitoring device comprises a grounding wire positioning lock and a state information acquisition module, the grounding wire positioning lock is used for accommodating the grounding wire, the state information acquisition module acquires the dismounting state of the grounding wire based on the on/off lock state of the grounding wire positioning lock, and the on/off lock state of the grounding wire positioning lock is determined by the on/off state of an auxiliary contact connected with the grounding wire positioning lock. The ground wire positioning lock is arranged to store the ground wire, and the on/off locking state of the ground wire positioning lock is acquired through the auxiliary contact, so that the dismounting state of the ground wire is known, the monitoring of the ground wire state is realized, the operation safety is ensured, and when the dismounting-free state is monitored, a prompt signal is sent out, so that the personal safety of an operator is further ensured.
Description
Technical Field
The invention relates to the technical field of operation and maintenance, in particular to a state monitoring device and method for a grounding wire.
Background
In the electric power operation maintenance work, the grounding wire is an important protection measure for ensuring the personal safety of electric power maintenance personnel. However, since the ground wire belongs to an offline device, the online management mode of real-time state monitoring the same as that of primary devices (such as a circuit breaker and a disconnecting switch) of a transformer substation cannot be adopted, so that a vicious misoperation accident of power transmission with the ground wire due to careless omission of workers is inevitable in actual work.
At present, the state management of the grounding wire of the transformer substation mainly adopts two modes of operation and maintenance personnel working record and transformer substation field simulation diagram marking. The operation and maintenance personnel work recording mode is that on-duty operation and maintenance personnel manually record the states of the grounding wires of all the substations which are administered, and handover is carried out when the substations are handed over. However, as the number of substations managed by operation and maintenance personnel increases day by day, the size of the ground wire is also larger and larger, and in addition, the maintenance work period is possibly longer, the problem of missed or wrong ground wire connection state is easily caused by a manual recording and connection management mode, meanwhile, the work load of the operation and maintenance personnel is also increased, and great power transmission potential safety hazards are brought. Although the mode of marking the state of the grounding wire on the site simulation diagram of the transformer substation can visually display the hanging/dismantling state of the grounding wire of the transformer substation, the misoperation accident of power transmission with the grounding wire caused by omission of operation and maintenance personnel or simulation preview before operation and the like cannot be prevented, and the grounding wire mark on the simulation diagram has the possibility of falling off due to non-artificial reasons, so that the operation and maintenance personnel can easily miss the grounding wire.
The two modes mainly depend on manual recording and inspection, the state monitoring of the grounding wire in the transformer substation cannot be realized, and the large potential safety hazard exists.
Disclosure of Invention
The invention provides a state monitoring device and method for a grounding wire, which are used for solving the problems that the existing method cannot realize state monitoring on the grounding wire in a transformer substation and has larger potential safety hazard.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a state monitoring device of a grounding wire, which comprises a grounding wire positioning lock and a state information acquisition module, wherein the grounding wire positioning lock is used for accommodating the grounding wire, the state information acquisition module acquires the dismounting state of the grounding wire based on the on/off lock state of the grounding wire positioning lock, and the on/off lock state of the grounding wire positioning lock is determined by the on/off state of an auxiliary contact connected with the grounding wire positioning lock.
Further, the state monitoring device further comprises an anti-error prompting module, and the anti-error prompting module prompts the number of the undetached grounding wire group based on the dismantling state.
Furthermore, the ground wire positioning lock comprises a base and a lock catch, the fixed ends of the base and the lock catch are connected through a rotating shaft, and the locking end of the lock catch is connected with the base through a pressing locking and button unlocking structure; and in the locking state, a hollow structure is formed between the base and the lock catch.
Furthermore, the ground wire positioning lock further comprises a spring, the spring is arranged on the side of the rotating shaft, and two ends of the spring are respectively connected with the outer side of one end of the base and the outer side of the lock catch at the same end and used for fixing the unlocking state of the ground wire positioning lock.
Furthermore, two ends of the auxiliary contact are connected with a power supply, and the movable end of the auxiliary contact is connected with the lock catch; when the lock catch is locked, the movable end of the auxiliary contact is pulled to disconnect the auxiliary contact; when the lock catch is unlocked, the movable end of the auxiliary contact is reset, and the auxiliary contact is closed.
Furthermore, the state information acquisition module comprises an acquisition unit and a first communication unit, wherein the acquisition unit is connected with the auxiliary contact, acquires an on-off signal of the auxiliary contact and sends the on-off signal to the first communication unit; the anti-error prompt module comprises a second communication unit, a control unit and a prompt unit; the second communication unit is in wireless communication with the first communication unit, the control unit controls the prompt unit to act based on the on-off signal received by the second communication unit, and the prompt unit prompts the dismantling state of the grounding wire in an LED display or/and voice mode.
The second aspect of the present invention provides a method for monitoring a state of a ground line, including the steps of:
a ground wire positioning lock is arranged on the ground wire frame and used for containing the ground wire;
and acquiring the locking/unlocking state of the ground wire positioning lock through the auxiliary contact to obtain the dismantling state of the ground wire.
Further, after obtaining the dismantling state of the ground wire, the state monitoring method further includes the following steps:
and prompting the number of the ground wire group which is not dismantled on site based on the dismantling state.
Further, the acquiring the on/off lock state of the ground wire positioning lock through the auxiliary contact specifically includes:
when the lock catch is locked, the movable end of the auxiliary contact is pulled to disconnect the auxiliary contact;
when the lock catch is unlocked, the movable end of the auxiliary contact is reset, and the auxiliary contact is closed.
The effect provided in the summary of the invention is only the effect of the embodiment, not all the effects of the invention, and one of the above technical solutions has the following advantages or beneficial effects:
1. the ground wire positioning lock is arranged to store the ground wire, and the on/off locking state of the ground wire positioning lock is acquired through the auxiliary contact, so that the dismounting state of the ground wire is known, the monitoring of the ground wire state is realized, the operation safety is ensured, and when the dismounting-free state is monitored, a prompt signal is sent out, so that the personal safety of an operator is further ensured.
2. The spring is arranged on the ground wire positioning lock, the opening state of the lock catch is guaranteed in the unlocking state, the misoperation of the auxiliary contact caused by automatic rebounding of the lock catch is avoided, and the accuracy of monitoring the state of the ground wire is guaranteed.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a condition monitoring device according to the present invention;
FIG. 2 is a schematic view of the unlocking state of the grounding wire positioning lock of the present invention;
FIG. 3 is a schematic view of the locking state of the grounding wire positioning lock according to the present invention;
FIG. 4 is a schematic view of the arrangement of the ground wire positioning lock in the safety tool cabinet of the present invention (the ground wire is not shown);
FIG. 5 is a schematic diagram of the structure of the error prompt prevention module according to the present invention;
FIG. 6 is a schematic diagram of an external structure of the module for preventing error notification according to the present invention;
FIG. 7 is a schematic flow chart of a condition monitoring method according to the present invention;
in the figure, 1-base, 2-lock catch, 3-rotating shaft, 4-spring, 5-unlocking button, 6-safety tool cabinet, 7-insulating boot bracket, 8-insulating glove bracket, 9-electroscope and insulating rod bracket, 10-ground wire frame, 11-temperature controller, 12-LED indicator light and 13-loudspeaker.
Detailed Description
In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and procedures are omitted so as to not unnecessarily limit the invention.
As shown in fig. 1, an embodiment of the present invention provides a ground wire state monitoring device, which includes a ground wire positioning lock, a state information obtaining module, and an anti-error prompt module, where the ground wire positioning lock is used to accommodate a ground wire, the state information obtaining module obtains a removal state of the ground wire based on an on/off lock state of the ground wire positioning lock, and the on/off lock state of the ground wire positioning lock is determined by on/off of an auxiliary contact connected to the ground wire positioning lock. And the error prevention prompt module prompts the number of the undetached ground wire group based on the dismantling state.
As shown in fig. 2 and 3, the ground wire positioning lock includes a base 1 and a lock catch 2, fixed ends of the base 1 and the lock catch 2 are connected through a rotating shaft 3, and a locking end of the lock catch 2 is connected to the base through a press locking and button unlocking structure; in the locked state, a hollow structure is formed between the base 1 and the lock catch 2.
The ground wire positioning lock further comprises a spring 4, the spring 4 is arranged on the side of the rotating shaft, and two ends of the spring 4 are respectively connected with the outer side of one end of the base 1 and the outer side of the lock catch 2 at the same end and used for fixing the unlocking state of the ground wire positioning lock.
The hollow structure of the ground wire in the locking state can meet the requirement of placing the wound ground wire. Base 1 accessible bolt crimping or welding mode are connected with the earth wire frame 10 in the safety tool cabinet 6 of transformer substation, and the earth connection that will twine is put into base 1 inslot back, presses hasp 2 to base 1 direction and can block hasp 2 and realize shutting, presses unlock button 5 and can unblank and take the earth connection.
As shown in fig. 4, the ground wire rack 10 has a plurality of sets of ground wires, and each set of ground wires is provided with a ground wire positioning lock. In addition, the safety tool cabinet 6 also comprises an insulating boot bracket 7, an insulating glove bracket 8, an electroscope and insulating rod bracket 9 and a temperature controller 11.
Two ends of the auxiliary contact are connected with a power supply, and the movable end of the auxiliary contact is connected with the lock catch 2 (shown by a bold dashed line in fig. 1); when the lock catch is locked, the movable end of the auxiliary contact is pulled to disconnect the auxiliary contact; when the lock catch is unlocked, the movable end of the auxiliary contact is reset, and the auxiliary contact is closed. So that the status information acquisition module receives different status signals.
The state information acquisition module comprises an acquisition unit, a first communication unit and a power supply unit, wherein the acquisition unit is connected with the auxiliary contact, acquires an on-off signal of the auxiliary contact and sends the on-off signal to the first communication unit. As shown in fig. 5, the error prevention prompting module includes a second communication unit, a control unit and a prompting unit; the second communication unit is in wireless communication with the first communication unit, the control unit controls the prompt unit to act based on the on-off signal received by the second communication unit, and the prompt unit prompts the dismantling state of the grounding wire in an LED display or/and voice mode.
The state information acquisition module can be embedded in a shell of the transformer substation safety tool cabinet, and sealant, a rubber pad and the like are used for ensuring the air tightness of the safety tool cabinet. The acquisition unit can adopt an integrated acquisition processing chip or a microprocessor and related auxiliary circuits, is connected with auxiliary contacts of the positioning locks of all grounding wires in the safety tool cabinet through signal wiring, and is responsible for converting acquired positioning lock opening/closing state information into data which can be received by the first communication unit. First communication unit passes through communication bus and is connected with the acquisition element, is responsible for sending away received data through wireless communication's mode, and wireless communication mode can adopt loRa, Zigbee etc.. The power supply unit can adopt a high-frequency switch rectification module, the input end of the power supply unit can be connected with a temperature controller power supply of the safety tool cabinet, and the output end of the power supply unit is respectively connected to the power input ends of the acquisition unit and the first communication unit and is responsible for providing power for the whole state information acquisition module.
As shown in fig. 6, the anti-misoperation prompt module can be of a cuboid structure, the shell can be made of plastic, and the LED indicator lamp 12 and the speaker 13 are arranged at the sound outlet, so that the anti-misoperation prompt module can be placed in operation places of operation and maintenance personnel such as a main control console in a main control room of a transformer substation. The second communication unit is connected with the control unit through a communication bus and is responsible for receiving the ground wire positioning lock opening/closing lock state data sent by the state information acquisition module, processing the data and transmitting the processed data to the control unit. The control unit can adopt microprocessors such as a single chip microcomputer and a DSP, the output end of the control unit is connected with the prompting unit, specifically, one path of the output end is connected to the LED display unit, the other path of the output end is connected to the voice prompting unit, and the control unit is responsible for controlling the LED display unit and the voice prompting unit to realize corresponding functions according to input ground wire positioning lock on/off state data.
The LED display unit can be provided with LED indicating lamps and series protection resistors which are in one-to-one correspondence with the grounding wires of the transformer substation, the LED indicating lamps can display different colors and are used for distinguishing the hanging/dismantling state of each group of grounding wires, the LED indicating lamps display green colors to indicate that the grounding wires corresponding to the group numbers are not used currently and are in the dismantled state, and the LED indicating lamps display red colors to indicate that the grounding wires corresponding to the group numbers are used currently and are not in the dismantled state.
The voice prompt unit can be configured with a power amplification circuit and a loudspeaker and is responsible for sending out voice prompt at regular time whether the current transformer substation has undetached grounding wires and the group number of the undetached grounding wires.
The power of the anti-misoperation prompt module can adopt a battery, and also can adopt a high-frequency switch rectifier module with the input of alternating current of 220V, and is responsible for providing power for the whole anti-misoperation prompt module.
After dismantling the on-site grounding wire of the transformer substation, the operation and maintenance personnel winds the grounding wire and places the grounding wire on a grounding wire frame corresponding to the group number in the safety tool cabinet, and locks the grounding wire by using a positioning lock corresponding to the group number, wherein the positioning lock is in a locking state, namely the positioning lock indicates that the grounding wire corresponding to the group number is not used currently and is in a dismantled state; when the equipment maintenance work needs to use the grounding wire, the operation and maintenance personnel need to unlock the positioning lock firstly and then use the grounding wire corresponding to the group number, and the positioning lock is in an unlocking state, namely, the positioning lock indicates that the grounding wire corresponding to the group number is currently used and is not in a dismounting state. Therefore, the on/off locking state of the ground wire positioning lock directly reflects the dismounting state of the ground wire of the corresponding group number.
As shown in fig. 7, an embodiment of the present invention further provides a method for monitoring a state of a ground line, including the following steps:
s1, arranging a grounding wire positioning lock on the grounding wire frame for accommodating the grounding wire;
and S2, acquiring the locking/unlocking state of the ground wire positioning lock through the auxiliary contact to obtain the dismantling state of the ground wire.
In an implementation manner of the state monitoring method embodiment of the present invention, after obtaining the removal state of the ground wire, the state monitoring method further includes the following steps:
and prompting the number of the ground wire group which is not dismantled on site based on the dismantling state.
In step S2, the acquiring the on/off lock state of the ground wire positioning lock through the auxiliary contact specifically includes:
when the lock catch is locked, the movable end of the auxiliary contact is pulled to disconnect the auxiliary contact;
when the lock catch is unlocked, the movable end of the auxiliary contact is reset, and the auxiliary contact is closed.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (9)
1. The state monitoring device of the ground wire is characterized by comprising a ground wire positioning lock and a state information acquisition module, wherein the ground wire positioning lock is used for accommodating the ground wire, the state information acquisition module acquires the dismantling state of the ground wire based on the on/off lock state of the ground wire positioning lock, and the on/off lock state of the ground wire positioning lock is determined by the on/off state of an auxiliary contact connected with the ground wire positioning lock.
2. The state monitoring device of the grounding wire according to claim 1, wherein the state monitoring device further comprises an anti-error prompting module, and the anti-error prompting module prompts the number of the grounding wire group which is not removed based on the removal state.
3. The state monitoring device of the grounding wire as in claim 1 or 2, wherein the grounding wire positioning lock comprises a base and a lock catch, the fixed ends of the base and the lock catch are connected through a rotating shaft, and the locking end of the lock catch is connected with the base through a press locking and button unlocking structure; and in the locking state, a hollow structure is formed between the base and the lock catch.
4. The condition monitoring device of the grounding wire as in claim 3, wherein the grounding wire positioning lock further comprises a spring, the spring is arranged on the side of the rotating shaft, and two ends of the spring are respectively connected with the outer side of one end of the base and the outer side of the lock catch at the same end, so as to fix the unlocking state of the grounding wire positioning lock.
5. The state monitoring device of the grounding wire of claim 1 or 2, wherein two ends of the auxiliary contact are connected with a power supply, and the movable end of the auxiliary contact is connected with the lock catch; when the lock catch is locked, the movable end of the auxiliary contact is pulled to disconnect the auxiliary contact; when the lock catch is unlocked, the movable end of the auxiliary contact is reset, and the auxiliary contact is closed.
6. The state monitoring device of the grounding wire of claim 2, wherein the state information acquisition module comprises an acquisition unit and a first communication unit, the acquisition unit is connected with the auxiliary contact, acquires an on-off signal of the auxiliary contact and sends the on-off signal to the first communication unit; the anti-error prompt module comprises a second communication unit, a control unit and a prompt unit; the second communication unit is in wireless communication with the first communication unit, the control unit controls the prompt unit to act based on the on-off signal received by the second communication unit, and the prompt unit prompts the dismantling state of the grounding wire in an LED display or/and voice mode.
7. A state monitoring method of a grounding wire is characterized by comprising the following steps:
a ground wire positioning lock is arranged on the ground wire frame and used for containing the ground wire;
and acquiring the locking/unlocking state of the ground wire positioning lock through the auxiliary contact to obtain the dismantling state of the ground wire.
8. The method for monitoring the state of the grounding wire according to claim 7, wherein after the state of the grounding wire being removed is obtained, the method for monitoring the state further comprises the following steps:
and prompting the number of the ground wire group which is not dismantled on site based on the dismantling state.
9. The method for monitoring the state of the grounding wire as claimed in claim 7, wherein the step of obtaining the on/off lock state of the positioning lock of the grounding wire through the auxiliary contact is specifically as follows:
when the lock catch is locked, the movable end of the auxiliary contact is pulled to disconnect the auxiliary contact;
when the lock catch is unlocked, the movable end of the auxiliary contact is reset, and the auxiliary contact is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111488951.4A CN114167306A (en) | 2021-12-07 | 2021-12-07 | State monitoring device and method for grounding wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111488951.4A CN114167306A (en) | 2021-12-07 | 2021-12-07 | State monitoring device and method for grounding wire |
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| CN114167306A true CN114167306A (en) | 2022-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111488951.4A Pending CN114167306A (en) | 2021-12-07 | 2021-12-07 | State monitoring device and method for grounding wire |
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| CN (1) | CN114167306A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114577382A (en) * | 2022-04-07 | 2022-06-03 | 国网江苏省电力有限公司超高压分公司 | Overhead line grounding wire sequential assembly and disassembly protection device and use method |
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