CN109473876B - High-voltage switch cabinet locking device for code collection verification and control method thereof - Google Patents
High-voltage switch cabinet locking device for code collection verification and control method thereof Download PDFInfo
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- CN109473876B CN109473876B CN201810313105.0A CN201810313105A CN109473876B CN 109473876 B CN109473876 B CN 109473876B CN 201810313105 A CN201810313105 A CN 201810313105A CN 109473876 B CN109473876 B CN 109473876B
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- 238000012795 verification Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 239000003990 capacitor Substances 0.000 claims description 51
- 239000000919 ceramic Substances 0.000 claims description 30
- 230000003068 static effect Effects 0.000 claims description 28
- 238000004891 communication Methods 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 6
- 238000013500 data storage Methods 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000008033 biological extinction Effects 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims description 2
- 230000007123 defense Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 description 22
- 238000010586 diagram Methods 0.000 description 20
- 230000000903 blocking effect Effects 0.000 description 4
- 230000005684 electric field Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/306—Accessories, e.g. windows
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00944—Details of construction or manufacture
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/24—Circuit arrangements for boards or switchyards
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
- G07C2009/00761—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by connected means, e.g. mechanical contacts, plugs, connectors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Lock And Its Accessories (AREA)
Abstract
A switch cabinet locking device for five-prevention code collection verification adopts a lock matched with a live display device and a five-prevention padlock, is arranged at 6 mistaken locking prevention points of a switch cabinet and comprises a circuit breaker, a bus knife switch, a line knife switch, a switch cabinet door, a switch and bus knife switch indirect grounding pile head and a line side grounding pile head. Whether the operation circuit is electrified or not is verified by additionally installing the electrified display locking device, when the circuit is confirmed to be electroless, the computer five-prevention key acquires the electric code through the locking device and converts the electric code into an unlocking instruction, and the five-prevention padlock of the rear cabinet door of the switch cabinet is unlocked through the unlocking instruction. Live display device gathers bus voltage to give five-prevention and adopt a yard port for the transmission, when bus voltage is not zero, five-prevention computer key can't gather the electric code of opening the cabinet door. The invention can conveniently refit the common high-voltage switch cabinet, has simple and reliable operation, low installation and maintenance cost and is easy to realize microcomputer joint defense.
Description
Technical Field
The invention relates to the field of electric five-prevention locking, in particular to a locking device of a high-voltage switch cabinet for code collection verification and a control method thereof.
Background
In the transformer substation, the working environment is complex, the electrical equipment is various, and misoperation accidents of operating personnel are easy to happen. Once the misoperation event occurs, the bus and the line can be powered off, and even large-area power failure can be caused, so that the personal safety and the stability of a power grid are threatened. At present, equipment manufacturer can adopt two kinds of modes to carry out the shutting to cubical switchboard back cabinet door usually, and electromagnetic lock is installed and is hung mechanical lock with adding to back cabinet door promptly. When the line is changed from operation to line maintenance at the interval of 10kV, the mode of adopting the electromagnetic lock is as follows: the method comprises the following steps of opening a breaker, opening a line knife switch, opening a bus knife switch, opening a rear cabinet door through an electromagnetic lock, judging whether a line is electrified or not through the electromagnetic lock at the moment, and installing a grounding wire through electricity testing; the mode of adopting the mechanical padlock is as follows: the method comprises the steps of opening a circuit breaker, opening a line knife switch, opening a bus knife switch, opening a rear cabinet door by a computer five-prevention program, judging whether the process is correct or not by the program, and if the circuit is a handle mutual supply circuit, the potential safety hazard of electrified circuit exists, and testing the electricity to install a grounding wire. Through the analysis discovery, the cubical switchboard of taking to add string mechanical lock has electrified risk when stopping in service, and the cubical switchboard that installs the electromagnetic lock is along with time and frequency of use's increase, and the electromagnetic lock appears the trouble such as jam, unable normal use easily, and the operating efficiency of direct influence equipment, so back cabinet door opening condition sets up and adopts the stability of preventing the mistake device is the leading problem.
Chinese patent No. CN 102903563B, open day 2015 year 2 month 11 days, a high tension switchgear's five prevent operating device, the mounting bracket comprises a mounting bracket, the operation end, a control end for controlling the closing of qianmen shutting and circuit breaker, the control end of branch, be equipped with the actuating mechanism who is connected with the operation end on the mounting bracket, the operation end is only one, the operation end includes the operation panel, be equipped with the operation port on the operation panel, the control end is through the opening of linkage mechanism control operation end, the closed state, actuating mechanism is including the rotatory drive shaft that sets up on the mounting bracket, a drive isolator, earthing switch's geneva mechanism, an auxiliary switch actuating mechanism for driving auxiliary switch, the installation operation panel is served to the drive shaft, drive shaft other end mounting groove wheel mechanism and auxiliary switch actuating mechanism. The invention adopts a single operating end, omits a transmission device between the control end and the sheave mechanism and between the control end and the auxiliary switch driving mechanism, simplifies the operating mechanism, has small volume, simple operation and safe use, and can meet the interlocking requirement of five prevention. However, the method only adopts a mechanical mechanism, is easy to lose efficacy due to corrosion, has high processing and manufacturing cost, cannot realize microcomputer networking joint defense, and has limitation.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the technical problems of poor stability and poor safety of the conventional anti-misoperation locking device of the high-voltage switch cabinet and the control method thereof are solved. A locking device of a high-voltage switch cabinet and a control method thereof are provided, wherein the locking device adopts a live display device and a five-prevention padlock with a verification function to verify the code collection.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a high-voltage switch cabinet locking device with code acquisition verification comprises a live display device, a five-prevention computer key, a five-prevention padlock and a locking accessory, wherein the live display device comprises a high-voltage sensor, a connecting wire, a display and a five-prevention code acquisition port; the locking accessory is arranged on an anti-misoperation point of the high-voltage switch cabinet, the five-prevention padlock is matched with the locking accessory, a computer key interface is arranged on a lock body of the five-prevention padlock, an unlocking device is arranged in the lock body of the five-prevention padlock, and the unlocking device is connected with the computer key interface. Whether the high-voltage bus is electrified or not is acquired through the electrified display device, if the high-voltage bus is not electrified, the unlocking information is transmitted to the five-prevention computer key, the five-prevention computer key is connected with the five-prevention padlock, power can be supplied to the five-prevention padlock, meanwhile, the unlocking information can be suitable for unlocking the five-prevention padlock, and the unlocking process is achieved.
Preferably, the five-prevention computer key comprises a shell, a microprocessor, a flash memory, a power supply contact, a data communication contact and a built-in power supply, wherein the microprocessor and the built-in power supply are arranged in the shell, the power supply contact and the data communication contact are arranged on the outer surface of the shell, the power supply contact is connected with the built-in power supply, the data communication contact and the flash memory are connected with the microprocessor, and the anti-misoperation locking point of the high-voltage switch cabinet comprises a circuit breaker, a bus knife switch, a line knife switch, a switch cabinet door, a grounding pile head between a switch and the bus knife switch and a grounding pile head on the line side. The power supply is arranged in the five-prevention computer key, so that the power supply can be used for supplying power to the five-prevention computer key, and the power supply can be used for supplying power to the five-prevention code-picking port of the electrified display device or the five-prevention padlock when the electrified display device or the five-prevention padlock is connected, so that the five-prevention code-picking port and the five-prevention padlock of the electrified display device do not need separate power supplies, and the cost is saved.
Preferably, the five-prevention padlock comprises a padlock, an unlocking device and a computer key interface, wherein the unlocking device comprises an eccentric wheel motor, an MCU and a memory; the computer key interface is arranged on the outer side of the padlock body, the unlocking device is arranged in the padlock body, the computer key interface is matched with a five-prevention computer key, the computer key interface comprises a power supply contact and a data contact, the power supply contact and the data contact are both connected with the MCU, and the eccentric wheel motor and the memory are both connected with the MCU; the surface of the lock tongue of the padlock is provided with a gap with a set length, and an eccentric wheel of an eccentric wheel motor is abutted against one side surface of the gap far away from the free end of the lock beam of the padlock. When the five-prevention computer key is connected with a computer key interface of the five-prevention padlock, the five-prevention padlock is powered on, the MCU verifies unlocking information carried by the five-prevention computer key through information stored in the memory and a verification program, if the information is in accordance with the information, the MCU powers on the eccentric wheel motor to rotate the eccentric wheel motor, the lock tongue is retracted under the pushing of the eccentric wheel, and the padlock is unlocked.
As preferred, high tension switchgear's mistake locking point of preventing is the cabinet door, the shutting annex includes stationary blade and fly leaf, the fly leaf is connected with the stationary blade is articulated, the stationary blade is the platelike, and stationary blade fixed mounting has a fretwork at the high tension switchgear cabinet door, and open at the stationary blade middle part, high tension switchgear cabinet door key hole is located in the fretwork, cover when the fly leaf stationary blade laminating the fretwork, stationary blade one side and the corresponding side of fly leaf all are provided with the riser, it has the lockhole to open on the riser, the lockhole matches with five-prevention padlock. Through adding this shutting annex, can conveniently reequip ordinary high tension switchgear, carry out equipment upgrading transformation, it is with low costs and effectual.
As preferred, high tension switchgear's anti-misoperation lock point is for being equipped with JS interlocking device's arc extinction plug-in strip, shutting annex includes stationary blade, lower stationary blade, separation blade, lock nose and spacing piece, it all is the strip with lower stationary blade to go up stationary blade, goes up stationary blade fixed mounting in JS interlocking device top, lower stationary blade fixed mounting is in JS interlocking device below, spacing piece is fixed on last stationary blade, the lock nose is fixed on the stationary blade down, the separation blade is the strip, and there is the arc arch in the middle part of the separation blade, and the separation blade lower part is opened there is the hole that matches with JS interlocking device. Through installing this shutting annex additional, can effectively get shutting JS interlocking device.
Preferably, the five-prevention code acquisition port comprises an electronic switch, a data transmission line, a data reading contact and a data memory, the data reading contact is matched with a five-prevention computer key, the data memory is connected with the data reading contact through the data transmission line, the electronic switch is positioned on the data transmission line, a control end of the electronic switch is connected with the high-voltage sensor, the electronic switch is switched on when the potential of the output end of the high-voltage sensor is lower than a set value, and the electronic switch is switched off when the potential of the output end of the high-voltage sensor to the ground is greater than or equal to the set value. If the electronic switch is disconnected, no path exists between the data reading contact and the data memory, and the unlocking information cannot be read by the five-prevention computer key.
Preferably, the high-voltage sensor is a capacitor C1, and a first end of a capacitor C1 is connected with a high-voltage bus; the display comprises a shell and a plurality of display loops, wherein each display loop comprises a capacitor C2, piezoelectric ceramics, a static contact P1, a static contact P2, a movable contact P3, a diode D1, a voltage stabilizing diode D2, a light emitting diode D3, a capacitor C3 and a current limiting resistor R1, a first end of the capacitor C2 is connected with a second end of the capacitor C1 through a connecting line, a second end of the capacitor C2 is grounded, the bottom surface of the piezoelectric ceramics is fixed on the shell, the top surface of the piezoelectric ceramics is fixedly connected with the movable contact P3 in an insulating way, the left side surface of the piezoelectric ceramics is connected with a first end of the capacitor C2 through a metal sheet attached with the piezoelectric ceramics, the right side surface of the piezoelectric ceramics is grounded through a metal sheet attached with the piezoelectric ceramics, the static contact P1 and the static contact P2 are collinear and leave a gap between the static contact P3 and one sides of the static contact P1 and the static contact P2 and cover the gap, the static contact P1 is connected with a first end of the static contact C59, the cathode of the diode D1 is connected with the first end of the capacitor C3, the second end of the capacitor C3 is grounded, the cathode of the zener diode D2 and the anode of the light emitting diode D3 are both connected with the first end of the capacitor C3, the anode of the zener diode D2 is grounded, and the cathode of the light emitting diode D3 is grounded through the current-limiting resistor R1.
The high voltage bus usually has 110KV, 35KV or 10KV ac voltage, so when driving the led D3 to emit light, it is first necessary to perform proper voltage reduction, for example, to reduce 110KV to 5V for driving the led to emit light, however, if the high voltage bus has several hundreds of volts ac voltage due to failure, the led D3 will not obtain enough driving voltage to emit light, but several hundreds of volts ac voltage still has danger. Aiming at the problems, the inventor designs the voltage reducing circuit, a capacitor C1 and a capacitor C2 are connected in series, both the capacitor C1 and the capacitor C2 have certain impedance, so that the voltage reducing circuit can play a role in voltage division, the capacitance ratio of the capacitor C1 and the capacitor C2 is adjusted, the voltage division ratio obtained by the first end of the capacitor C2 can be adjusted, the electric field intensity between two side surfaces of piezoelectric ceramics is smaller than the breakdown strength of the piezoelectric ceramics when a high-voltage bus bar is normally charged, the capacitor can be additionally arranged between the left metal plate of the piezoelectric ceramics and the first end of the capacitor C2 for further voltage division if needed, the first end of the capacitor C2 changes the ground voltage according to a sine rule, when the first end of the capacitor C2 is positive voltage to ground, the piezoelectric ceramics is elongated or shortened under the effect of the electric field, when the voltage does not exceed a set value, the movable contact piece P3 is in contact with the static contact piece P, when the voltage exceeds a set value, the length variation of the piezoelectric ceramic causes the movable contact P3 to be separated from the static contact P1 or the static contact P2, namely, the connection between the capacitor C3 and the high-voltage bus is cut off, so that the highest voltage of the capacitor C3 is a set value, namely, no matter the high-voltage bus has normal high voltage or low voltage which is much lower than the normal high voltage, both ends of the capacitor C3 can obtain a relatively constant voltage value, the capacitance of the capacitor C3 is relatively large, and the resistance of a charging loop of the capacitor C3 is far smaller than that of a discharging loop, so that the light-emitting diode D3 still has relatively bright brightness when the high-voltage bus has relatively low voltage.
A control method of a locking device of a high-voltage switch cabinet adopting code verification is suitable for the locking device of the high-voltage switch cabinet adopting code verification, and comprises the following steps: A1) the unlocking passwords of all five-prevention switch cabinet locking devices installed on the high-voltage switch cabinet are stored in a data storage of the five-prevention code collecting port, data and programs for verifying the unlocking passwords are stored in a storage of a five-prevention padlock of the five-prevention switch cabinet locking device, a live display device with the five-prevention code collecting port is installed on the outer side of the high-voltage switch cabinet, and the five-prevention padlock is arranged at a locking point of the high-voltage switch cabinet; A2) when the high-voltage switch cabinet needs to be overhauled, sequentially pulling open a circuit breaker, a line knife switch and a bus knife switch, judging whether a high-voltage bus is electrified or not according to an electrified display device, if so, entering the step A3, otherwise, forbidding opening the high-voltage cabinet door and ending the process; A3) connecting a five-prevention computer key with a five-prevention code-collecting port, and switching on an electronic switch of the five-prevention code-collecting port to enable the five-prevention computer key to be connected with a data memory to read and store an unlocking password; A4) the five-prevention computer key is sequentially connected with the five-prevention padlock at the locking point of the high-voltage switch cabinet according to the flow, the five-prevention padlock is powered by the five-prevention computer key at the moment, the unlocking password stored by the five-prevention computer key is verified, if the password is correct, the five-prevention padlock is opened and the unlocking password of the locking point of the next flow is generated, and after the five-prevention padlock at all the locking points is unlocked, the high-voltage switch cabinet door is opened.
The substantial effects of the invention are as follows: the modified common high-voltage switch cabinet can be conveniently operated, is simple and reliable, has low installation and maintenance cost, is easy to realize microcomputer joint defense, and lays a foundation for further improving the automation degree of misoperation-preventive locking of the high-voltage switch cabinet.
Drawings
Fig. 1 is a block diagram of a high-voltage switchgear assembly.
Fig. 2 is a structure diagram of a five-prevention computer key.
Fig. 3 is a structure diagram of a five-prevention padlock.
Fig. 4 is a structure diagram of the locking accessory, wherein fig. 4- (1) is a schematic diagram of unlocking the locking accessory, and fig. 4- (2) is a schematic diagram of locking the locking accessory.
Fig. 5 is a structure diagram of a locking accessory of the locking point of the JS interlocking mechanism, where fig. 5- (1) is a schematic diagram of locking of the locking accessory of the JS interlocking mechanism, and fig. 5- (2) is a schematic diagram of unlocking of the locking accessory of the JS interlocking mechanism.
Fig. 6 is a schematic diagram showing the circuit.
Fig. 7 is a flow chart of a control method of the five-prevention switch cabinet locking device.
Wherein: 1. high-voltage bus, 2, high-voltage sensor, 3, connecting wire, 4, shielding wire, 5, five-prevention code acquisition port, 6, display, 7, data communication contact, 8, power supply contact, 9, high-voltage switch cabinet, 10, five-prevention padlock, 11, computer key interface, 12, locking accessory, 13, shielding wire electrified display, 14, five-prevention computer key, 15, shell, 16, built-in power supply, 17, flash memory, 18, microprocessor, 19, lock beam, 20, memory, 21, MCU, 22, data contact, 23, bolt, 24, eccentric wheel, 25, eccentric wheel motor, 26, lock body, 27, power supply contact, 28, vertical piece, 29, cabinet door locking point, 30, movable plate, 31, fixing piece, 32, upper fixing piece, 33, JS interlocking mechanism, 34, blocking piece, 35, lower fixing piece, 36, locking nose, 37, piezoelectric ceramic.
Detailed Description
The following provides a more detailed description of the present invention, with reference to the accompanying drawings.
As shown in fig. 1, a locking device of a high-voltage switch cabinet is composed of a high-voltage sensor 2 of a high-voltage bus live display device connected with a high-voltage bus 1, a connecting wire 3 connecting the high-voltage sensor 2 with a display 6, a shielding wire 4 covering the connecting wire 3 and being grounded, the shielding wire 4 being connected with a shielding wire live display 13, a five-prevention code-picking port 5 being arranged on the display 6, a data communication contact 7 and a power supply contact 8 being arranged on a five-prevention computer key, the five-prevention code-picking port 5 being matched with interfaces corresponding to the five-prevention padlock 10, the five-prevention padlock 10 being arranged at a locking point of the high-voltage switch cabinet 9 with a locking accessory 12, a computer key interface 11 being arranged on the five-prevention padlock 10, when the high-voltage bus 1 is out of power, the five-prevention computer key being connected with the five-prevention code-picking port 5 to read and store unlocking information, and then being connected with the computer key interface 11, the unlocking information collected by the five-prevention computer key can be verified by the five-prevention padlock 10, and the five-prevention padlock is unlocked if the verification is passed, so that the safe unlocking of the locking point of the high-voltage switch cabinet 9 is completed.
As shown in fig. 2, the five-prevention computer key structure diagram is a five-prevention computer key structure diagram, the five-prevention computer key includes a housing 15, a microprocessor 18, a flash memory 17, a power supply contact 8, a data communication contact 7 and an internal power supply 16, the microprocessor 18 and the internal power supply are arranged in the housing 15, the power supply contact 8 and the data communication contact 7 are arranged on the outer surface of the housing 15, the power supply contact 8 is connected with the internal power supply 16, the data communication contact 7 and the flash memory 17 are connected with the microprocessor 18, and an anti-misoperation point of a high-voltage switch cabinet 9 includes a breaker, a bus knife switch, a line knife switch, a switch cabinet door, a grounding stub between a switch and the bus knife switch and a line side grounding. The power supply 16 arranged in the five-prevention computer key can supply power for the five-prevention computer key and can supply power for the five-prevention code-picking port 5 or the five-prevention padlock 10 of the electrified display device when the electrified display device or the five-prevention padlock is connected, so that the five-prevention code-picking port 5 and the five-prevention padlock 10 of the electrified display device do not need separate power supplies, and the cost is saved.
As shown in fig. 3, it is a structure diagram of a five-prevention padlock, which includes a padlock, an unlocking device and a computer key interface, wherein the unlocking device includes an eccentric wheel motor 25, a MCU21 and a memory 20; the computer key interface is arranged on the outer side of the padlock body 26, the unlocking device is arranged in the padlock body 26, the computer key interface is matched with a five-prevention computer key, the computer key interface comprises a power supply contact 27 and a data contact 22, the power supply contact 27 and the data contact 22 are both connected with the MCU21, and the eccentric wheel motor 25 and the memory 20 are both connected with the MCU 21; the surface of the lock tongue 23 of the padlock is provided with a notch with a set length, and an eccentric wheel 24 of an eccentric wheel motor 25 is abutted with one side surface of the notch far away from the free end of the lock beam 19 of the padlock. When the five-prevention computer key is connected with a computer key interface of the five-prevention padlock, the five-prevention padlock 10 is powered on, the MCU21 verifies unlocking information carried by the five-prevention computer key through information stored in the memory 20 and a verification program, if the information is in accordance with the information, the MCU21 powers on the eccentric wheel motor 25 to rotate the eccentric wheel motor, the lock tongue 23 is retracted under the pushing of the eccentric wheel 24, and the padlock is unlocked.
As shown in fig. 4, the structure diagram of the locking accessory is shown, wherein fig. 4- (1) is a schematic diagram of unlocking the locking accessory, fig. 4- (2) is a schematic diagram of locking the locking accessory, the locking accessory comprises a fixed plate 31 and a movable plate 30, the movable plate 30 is hinged to the fixed plate 31, the fixed plate 31 is plate-shaped, the fixed plate 31 is fixedly mounted on a door of the high-voltage switch cabinet 9, a hollow is formed in the middle of the fixed plate 31, a key hole 29 of the door of the high-voltage switch cabinet 9 is located in the hollow, the hollow is covered when the fixed plate 30 is attached to the movable plate, vertical plates 28 are arranged on one side of the fixed plate 31 and the corresponding side of the. Through adding this shutting annex, can conveniently reequip ordinary high tension switchgear 9, carry out equipment upgrading transformation, it is with low costs and effectual.
As shown in fig. 5, the structure diagram of the locking accessory of the JS interlocking mechanism locking point is shown, where fig. 5- (1) is a schematic locking diagram of the JS interlocking mechanism locking accessory, fig. 5- (2) is a schematic unlocking diagram of the JS interlocking mechanism locking accessory, the false locking prevention point of the high-voltage switch cabinet 9 is an arc-extinguishing knife equipped with the JS interlocking mechanism 33, the locking accessory includes an upper fixing plate 32, a lower fixing plate 35, a blocking piece 34, a locking nose 36 and a limiting piece, the upper fixing plate 32 and the lower fixing plate 35 are both in a strip shape, the upper fixing plate 32 is fixedly installed above the JS interlocking mechanism 33, the lower fixing plate 35 is fixedly installed below the JS interlocking mechanism 33, the limiting piece is fixed on the upper fixing plate 32, the locking nose 36 is fixed on the lower fixing plate 35, the blocking piece 34 is in a strip shape, the middle of the blocking piece 34. By additionally arranging the locking accessory, the JS interlocking mechanism 33 can be effectively locked.
The five-prevention code collecting port 5 comprises an electronic switch, a data transmission line, a data reading contact and a data memory, the data reading contact is matched with a five-prevention computer key, the data memory is connected with the data reading contact through the data transmission line, the electronic switch is positioned on the data transmission line, a control end of the electronic switch is connected with the high-voltage sensor 2, the electronic switch is switched on when the potential of the output end of the high-voltage sensor 2 is lower than a set value, and the electronic switch is switched off when the voltage of the output end of the high-voltage sensor 2 to the ground is larger than or. If the electronic switch is disconnected, no path exists between the data reading contact and the data memory, and the unlocking information cannot be read by the five-prevention computer key.
As shown in fig. 6, in order to show a schematic circuit diagram, the high voltage sensor 2 is a capacitor C1, and a first end of the capacitor C1 is connected to a high voltage bus; the display 6 comprises a shell and a plurality of display loops, the display loops comprise a capacitor C2, piezoelectric ceramics, a static contact P1, a static contact P2, a movable contact P3, a diode D1, a voltage stabilizing diode D2, a light emitting diode D3, a capacitor C3 and a current limiting resistor R1, a first end of the capacitor C2 is connected with a second end of the capacitor C1 through a connecting line, a second end of the capacitor C2 is grounded, the bottom surface of the piezoelectric ceramics 37 is fixed on the shell, the top surface of the piezoelectric ceramics 37 is fixedly connected with the movable contact P3 in an insulating way, the left side surface of the piezoelectric ceramics 37 is connected with a first end of the capacitor C2 through a metal sheet attached with the left side surface of the piezoelectric ceramics 37, the right side surface of the piezoelectric ceramics 37 is grounded through a metal sheet attached with the piezoelectric ceramics, the static contact P1 and the static contact P2 are collinear and have a gap between the static contact P2, the movable contact P3 is attached with one side of the static contact P1 and one side of the static contact P2, the cathode of the diode D1 is connected with the first end of the capacitor C3, the second end of the capacitor C3 is grounded, the cathode of the zener diode D2 and the anode of the light emitting diode D3 are both connected with the first end of the capacitor C3, the anode of the zener diode D2 is grounded, and the cathode of the light emitting diode D3 is grounded through the current limiting resistor R1. Preferably, a capacitor C4 is connected between the left side metal piece of the piezoelectric ceramic 37 and the first end of the capacitor C2 for reducing the electric field strength on both sides of the piezoelectric ceramic 37 to ensure that the piezoelectric ceramic 37 is not broken down.
As shown in fig. 7, the flow chart of the control method of the five-prevention switch cabinet locking device is applicable to the high-voltage switch cabinet locking device adopting code verification, and the method includes the following steps: A1) the unlocking passwords of all five-prevention switch cabinet locking devices installed on the high-voltage switch cabinet are stored in a data storage of a five-prevention code collecting port, data and programs for verifying the unlocking passwords are stored in a storage of a five-prevention padlock of the five-prevention switch cabinet locking device, a live display device with the five-prevention code collecting port is installed on the outer side of the high-voltage switch cabinet, and the five-prevention padlock is arranged on a locking point of the high-voltage switch cabinet; A2) when the high-voltage switch cabinet needs to be overhauled, sequentially pulling open a circuit breaker, a line knife switch and a bus knife switch, judging whether a high-voltage bus is electrified or not according to an electrified display device, if so, entering the step A3, otherwise, forbidding opening the high-voltage cabinet door and ending the process; A3) connecting a five-prevention computer key with a five-prevention code-collecting port, and switching on an electronic switch of the five-prevention code-collecting port to enable the five-prevention computer key to be connected with a data memory to read and store an unlocking password; A4) the five-prevention computer key is sequentially connected with the five-prevention padlock at the locking point of the high-voltage switch cabinet according to the flow, the five-prevention padlock is powered by the five-prevention computer key at the moment, the unlocking password stored by the five-prevention computer key is verified, if the password is correct, the five-prevention padlock is opened and the unlocking password of the locking point of the next flow is generated, and after the five-prevention padlock at all the locking points is unlocked, the high-voltage switch cabinet door is opened.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.
Claims (6)
1. A high-voltage switch cabinet locking device adopting code verification is characterized in that,
the high-voltage intelligent lock comprises a live display device, a five-prevention computer key, a five-prevention padlock and a locking accessory, wherein the live display device comprises a high-voltage sensor, a connecting wire, a display and a five-prevention code collecting port, the high-voltage sensor is connected with a high-voltage bus, the high-voltage sensor is connected with the display through the connecting wire, the display is installed on the outer side of a cabinet door of a high-voltage switch cabinet, and the five-prevention code collecting port is installed on the display; the locking accessory is arranged on an anti-misoperation point of the high-voltage switch cabinet, the five-prevention padlock is matched with the locking accessory, a computer key interface is arranged on a lock body of the five-prevention padlock, an unlocking device is arranged in the lock body of the five-prevention padlock, and the unlocking device is connected with the computer key interface;
the high-voltage sensor is a capacitor C1, and the first end of the capacitor C1 is connected with a high-voltage bus;
the display comprises a shell and a plurality of display loops, wherein each display loop comprises a capacitor C2, piezoelectric ceramics, a static contact P1, a static contact P2, a movable contact P3, a diode D1, a voltage stabilizing diode D2, a light emitting diode D3, a capacitor C3 and a current limiting resistor R1, a first end of the capacitor C2 is connected with a second end of the capacitor C1 through a connecting line, a second end of the capacitor C2 is grounded, the bottom surface of the piezoelectric ceramics is fixed on the shell, the top surface of the piezoelectric ceramics is fixedly connected with the movable contact P3 in an insulating way, the left side surface of the piezoelectric ceramics is connected with a first end of the capacitor C2 through a metal sheet attached with the piezoelectric ceramics, the right side surface of the piezoelectric ceramics is grounded through a metal sheet attached with the piezoelectric ceramics, the static contact P1 and the static contact P2 are collinear and leave a gap between the static contact P3 and one sides of the static contact P1 and the static contact P2 and cover the gap, the static contact P1 is connected with a first end of the static contact C59, the cathode of the diode D1 is connected with the first end of the capacitor C3, the second end of the capacitor C3 is grounded, the cathode of the zener diode D2 and the anode of the light-emitting diode D3 are both connected with the first end of the capacitor C3, the anode of the zener diode D2 is grounded, and the cathode of the light-emitting diode D3 is grounded through the current-limiting resistor R1;
the five-prevention padlock comprises a padlock, an unlocking device and a computer key interface, wherein the unlocking device comprises an eccentric wheel motor, an MCU and a memory; the computer key interface is arranged on the outer side of the padlock body, the unlocking device is arranged in the padlock body, the computer key interface is matched with a five-prevention computer key, the computer key interface comprises a power supply contact and a data contact, the power supply contact and the data contact are both connected with the MCU, and the eccentric wheel motor and the memory are both connected with the MCU; a gap with a set length is formed in the surface of a lock tongue of the padlock, and an eccentric wheel of an eccentric wheel motor is abutted to one side surface of the gap, which is far away from the free end of a lock beam of the padlock;
the five-prevention code acquisition port comprises an electronic switch, a data transmission line, a data reading contact and a data memory, the data reading contact is matched with a five-prevention computer key, the data memory is connected with the data reading contact through the data transmission line, the electronic switch is positioned on the data transmission line, a control end of the electronic switch is connected with the high-voltage sensor, the electronic switch is switched on when the output end of the high-voltage sensor is lower than a set value, and the electronic switch is switched off when the output end of the high-voltage sensor is higher than or equal to a set value;
the following steps are carried out: A1) the unlocking passwords of all five-prevention switch cabinet locking devices installed on the high-voltage switch cabinet are stored in a data storage of the five-prevention code collecting port, data and programs for verifying the unlocking passwords are stored in a storage of a five-prevention padlock of the five-prevention switch cabinet locking device, a live display device with the five-prevention code collecting port is installed on the outer side of the high-voltage switch cabinet, and the five-prevention padlock is arranged at a locking point of the high-voltage switch cabinet; A2) when the high-voltage switch cabinet needs to be overhauled, sequentially pulling open a circuit breaker, a line knife switch and a bus knife switch, judging whether a high-voltage bus is electrified or not according to an electrified display device, if so, entering the step A3, otherwise, forbidding opening the high-voltage cabinet door and ending the process; A3) connecting a five-prevention computer key with a five-prevention code-collecting port, and switching on an electronic switch of the five-prevention code-collecting port to enable the five-prevention computer key to be connected with a data memory to read and store an unlocking password; A4) the five-prevention computer key is sequentially connected with the five-prevention padlock at the locking point of the high-voltage switch cabinet according to the flow, the five-prevention padlock is powered by the five-prevention computer key at the moment, the unlocking password stored by the five-prevention computer key is verified, if the password is correct, the five-prevention padlock is opened and the unlocking password of the locking point of the next flow is generated, and after the five-prevention padlock at all the locking points is unlocked, the high-voltage switch cabinet door is opened.
2. The high-voltage switch cabinet locking device adopting code verification as claimed in claim 1,
the five-prevention computer key comprises a shell, a microprocessor, a flash memory, a power supply contact, a data communication contact and a built-in power supply, wherein the microprocessor and the built-in power supply are arranged in the shell, the power supply contact and the data communication contact are arranged on the outer surface of the shell, the power supply contact is connected with the built-in power supply, the data communication contact and the flash memory are connected with the microprocessor, and the anti-misoperation locking point of the high-voltage switch cabinet comprises a circuit breaker, a bus knife switch, a line knife switch, a switch cabinet door, a grounding pile head between a switch and the bus knife switch and a line side grounding pile head.
3. The code-adopted verification high-voltage switch cabinet locking device as claimed in claim 1 or 2,
the high tension switchgear prevent mistake locking point for the cabinet door, the shutting annex includes stationary blade and fly leaf, the fly leaf is connected with the stationary blade is articulated, the stationary blade is platelike, and stationary blade fixed mounting has a fretwork at the high tension switchgear cabinet door, and open at the stationary blade middle part, high tension switchgear cabinet door key hole is located in the fretwork, cover when the fly leaf stationary blade laminating the fretwork, stationary blade one side and the corresponding side of fly leaf all are provided with the riser, it has the lockhole to open on the riser, the lockhole matches with five-prevention padlock.
4. The code-adopted verification high-voltage switch cabinet locking device as claimed in claim 1 or 2,
the arc extinction plug-in strip of high tension switchgear's mistake anti-lock point for being equipped with JS interlocking device, the shutting annex includes stationary blade, lower stationary blade, separation blade, lock nose and spacing piece, it all is the strip with lower stationary blade to go up the stationary blade, goes up stationary blade fixed mounting in JS interlocking device top, stationary blade fixed mounting is in JS interlocking device below down, spacing piece is fixed on last stationary blade, the lock nose is fixed on the stationary blade down, the separation blade is the strip, and there is the arc to arch in the middle part of the separation blade, and the separation blade lower part is opened there is the hole that matches with JS interlocking device.
5. The high-voltage switch cabinet locking device adopting code verification as claimed in claim 4,
the five-prevention code acquisition port comprises an electronic switch, a data transmission line, a data reading contact and a data memory, the data reading contact is matched with a five-prevention computer key, the data memory is connected with the data reading contact through the data transmission line, the electronic switch is positioned on the data transmission line, a control end of the electronic switch is connected with the high-voltage sensor, the electronic switch is switched on when the output end of the high-voltage sensor is lower than a set value, and the electronic switch is switched off when the output end of the high-voltage sensor is higher than or equal to a set value in terms of voltage to earth.
6. A control method of a locking device of a high-voltage switch cabinet adopting code verification is suitable for the locking device of the high-voltage switch cabinet adopting code verification according to any one of claims 1 to 5,
the method comprises the following steps:
A1) the unlocking passwords of all five-prevention switch cabinet locking devices installed on the high-voltage switch cabinet are stored in a data storage of the five-prevention code collecting port, data and programs for verifying the unlocking passwords are stored in a storage of a five-prevention padlock of the five-prevention switch cabinet locking device, a live display device with the five-prevention code collecting port is installed on the outer side of the high-voltage switch cabinet, and the five-prevention padlock is arranged at a locking point of the high-voltage switch cabinet;
A2) when the high-voltage switch cabinet needs to be overhauled, sequentially pulling open a circuit breaker, a line knife switch and a bus knife switch, judging whether a high-voltage bus is electrified or not according to an electrified display device, if so, entering the step A3, otherwise, forbidding opening the high-voltage cabinet door and ending the process;
A3) connecting a five-prevention computer key with a five-prevention code-collecting port, and switching on an electronic switch of the five-prevention code-collecting port to enable the five-prevention computer key to be connected with a data memory to read and store an unlocking password;
A4) the five-prevention computer key is sequentially connected with the five-prevention padlock at the locking point of the high-voltage switch cabinet according to the flow, the five-prevention padlock is powered by the five-prevention computer key at the moment, the unlocking password stored by the five-prevention computer key is verified, if the password is correct, the five-prevention padlock is opened and the unlocking password of the locking point of the next flow is generated, and after the five-prevention padlock at all the locking points is unlocked, the high-voltage switch cabinet door is opened.
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| CN110644864B (en) * | 2019-08-13 | 2021-01-29 | 国网浙江省电力有限公司丽水供电公司 | Switch cabinet anti-misoperation locking device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202363319U (en) * | 2011-11-28 | 2012-08-01 | 珠海优特电力科技股份有限公司 | Misoperation-prevention locking bracket |
| CN203787791U (en) * | 2013-12-11 | 2014-08-20 | 广东天能电力设计有限公司 | Ring main unit high-voltage live display block system with forced block function |
| CN203798898U (en) * | 2014-01-21 | 2014-08-27 | 长园共创电力安全技术股份有限公司 | High-voltage electriferous display locking device |
| CN206774419U (en) * | 2017-05-18 | 2017-12-19 | 广东电网有限责任公司东莞供电局 | XGN cabinet disconnecting link microcomputer five-prevention locking device |
| CN107795203A (en) * | 2017-12-12 | 2018-03-13 | 东莞市安邦德智能锁具科技有限公司 | A kind of intelligent electronic lock |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101608519B (en) * | 2009-07-28 | 2011-09-07 | 镇江泰源电器科技有限公司 | Five-proof program padlock |
| CN202183316U (en) * | 2011-07-14 | 2012-04-04 | 内蒙古大唐国际托克托发电有限责任公司 | Novel five-prevention baffle |
| CN202810409U (en) * | 2012-10-08 | 2013-03-20 | 河南森源电气股份有限公司 | Five-prevention padlock structure for switch cabinet door |
| CN203217291U (en) * | 2013-04-17 | 2013-09-25 | 湖北拓普电力有限公司 | Microcomputer anti-error operation system |
| CN204044230U (en) * | 2014-08-19 | 2014-12-24 | 国家电网公司 | With the high voltage display device that error proof locking system of microcomputer is supporting |
| CN104481310B (en) * | 2014-12-04 | 2017-04-19 | 国网河南省电力公司鹤壁供电公司 | Five-anti locking device and locking method |
| CN105610079B (en) * | 2016-02-18 | 2017-10-10 | 国家电网公司 | A kind of high-voltage switch cabinet of transformer substation microcomputer misoperation prevention locking system and method |
| CN206322618U (en) * | 2016-12-01 | 2017-07-11 | 国网河南嵩县供电公司 | A kind of new five anti-computer key |
| CN207048497U (en) * | 2017-07-18 | 2018-02-27 | 珠海优特电力科技股份有限公司 | Electrical verification locking device |
| CN207098311U (en) * | 2017-08-02 | 2018-03-13 | 河南森源电气股份有限公司 | A kind of switch cubicle |
-
2018
- 2018-04-09 CN CN201810313105.0A patent/CN109473876B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202363319U (en) * | 2011-11-28 | 2012-08-01 | 珠海优特电力科技股份有限公司 | Misoperation-prevention locking bracket |
| CN203787791U (en) * | 2013-12-11 | 2014-08-20 | 广东天能电力设计有限公司 | Ring main unit high-voltage live display block system with forced block function |
| CN203798898U (en) * | 2014-01-21 | 2014-08-27 | 长园共创电力安全技术股份有限公司 | High-voltage electriferous display locking device |
| CN206774419U (en) * | 2017-05-18 | 2017-12-19 | 广东电网有限责任公司东莞供电局 | XGN cabinet disconnecting link microcomputer five-prevention locking device |
| CN107795203A (en) * | 2017-12-12 | 2018-03-13 | 东莞市安邦德智能锁具科技有限公司 | A kind of intelligent electronic lock |
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|---|---|
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