CN111864552A - Intelligent control device and system for ring main unit ground knife padlock and ground knife padlock device - Google Patents
Intelligent control device and system for ring main unit ground knife padlock and ground knife padlock device Download PDFInfo
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- CN111864552A CN111864552A CN202010636014.8A CN202010636014A CN111864552A CN 111864552 A CN111864552 A CN 111864552A CN 202010636014 A CN202010636014 A CN 202010636014A CN 111864552 A CN111864552 A CN 111864552A
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- padlock
- main unit
- ring main
- knife
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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
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B47/0012—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with rotary electromotors
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B67/00—Padlocks; Details thereof
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
- H01H9/281—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
The embodiment of the invention discloses an intelligent control device and system for a ring main unit ground knife padlock and a ground knife padlock device, wherein the control device comprises a potential difference sensing module, a filtering module, a voltage comparison module and a control module; the voltage comparison module is used for comparing the voltage output by the filtering module with a preset voltage and generating a trigger signal; the control module is used for generating a first control signal according to the trigger signal so as to control the state of the ground knife padlock. According to the technical scheme provided by the embodiment of the invention, the potential difference sensing module is adopted to sense the voltage of the ring main unit, the control module is used for controlling the unlocking or locking of the padlock of the grounding switch, the live state of the ring main unit equipment can be monitored in real time, the ring main unit does not need to be manually determined whether to be live or not in the maintenance process, the reliability of live detection is improved, the situation that the grounding switch is closed in a live state due to misoperation can be prevented, and the safety of lives, properties and equipment is favorably guaranteed.
Description
Technical Field
The embodiment of the invention relates to the technical field of power electronics, in particular to an intelligent control device and system for a ring main unit ground knife padlock and a ground knife padlock device.
Background
In an electric power transmission and distribution system, a ring network switch cabinet (ring network cabinet) plays an important role in the processes of power generation, power transmission, power distribution and electric energy conversion, and can realize the functions of opening and closing, protection, monitoring and control of a circuit. And the grounding knife switch (grounding knife) plays a vital role in the operation, maintenance and overhaul of the switch cabinet.
At present, only one mechanical lock is usually hung on a ground switch in a ring main unit, a key is needed to unlock the ring main unit manually, and the ring main unit is not associated with whether a cable head in the ring main unit is electrified or not, so that the ring main unit is low in safety and reliability, and has the risk of being electrified to be connected with the ground switch.
Disclosure of Invention
The embodiment of the invention provides an intelligent control device and system for a ring main unit and a ground knife padlock device, which are used for monitoring the live state of a ring main unit in real time and further improving the safety and reliability of the ground knife padlock.
In a first aspect, an embodiment of the present invention provides an intelligent control device for a ring main unit, including: the device comprises a potential difference induction module, a filtering module, a voltage comparison module and a control module;
The input end of the potential difference induction module is connected with the ring main unit, and the potential difference induction module is used for inducing the voltage of the ring main unit and outputting the voltage from the output end of the ring main unit;
the input end of the filtering module is electrically connected with the output end of the potential difference induction module, the output end of the filtering module is electrically connected with the input end of the voltage comparison module, and the voltage comparison module is used for comparing the voltage output by the filtering module with a preset voltage and generating a trigger signal;
the input end of the control module is electrically connected with the output end of the voltage comparison module, the output end of the control module is connected with the ground knife padlock, and the control module is used for generating a first control signal according to the trigger signal so as to control the state of the ground knife padlock.
Optionally, the system further comprises a first communication module;
the input end of the first communication module is electrically connected with the output end of the control module, the output end of the first communication module is in communication connection with the ground-knife padlock, the first communication module is used for outputting a second control signal to the ground-knife padlock according to the first control signal, and the ground-knife padlock is unlocked or locked according to the second control signal.
Optionally, the potential difference sensing module comprises a voltage sensor, an amplifier, a first resistor and a first capacitor;
the first end of the voltage sensor is electrically connected with the first input end of the amplifier, the second input end of the amplifier is grounded, the output end of the amplifier is electrically connected with the input end of the filtering module, and the second end of the voltage sensor is grounded;
the first end of the first resistor is electrically connected with the first input end of the amplifier, the second end of the first resistor is electrically connected with the output end of the amplifier, and the first capacitor is connected with the first resistor in parallel.
Optionally, the voltage sensor is a potential difference induction sensor.
In a second aspect, an embodiment of the present invention further provides an intelligent control system for a ring main unit ground knife padlock, where the intelligent control system for a ring main unit ground knife padlock includes the intelligent control device for a ring main unit ground knife padlock of the first aspect, and the intelligent control system for a ring main unit ground knife padlock further includes a ground knife padlock main body, the ground knife padlock is disposed in the ground knife padlock main body, and the ground knife padlock main body is in communication connection with the intelligent control device for a ring main unit ground knife padlock.
Optionally, the ground knife padlock body comprises a second communication module, a driving module, a motor and a power module, the second communication module, the driving module and the motor are respectively electrically connected with the power module, and the motor is electrically connected with the ground knife padlock;
the input end of the second communication module is in communication connection with the output end of the first communication module, and the output end of the second communication module outputs a second control signal sent by the first communication module;
the input end of the driving module is electrically connected with the output end of the second communication module, the output end of the driving module is electrically connected with the motor, and the driving module is used for driving the motor according to the second control signal so as to unlock or lock the ground knife padlock.
Optionally, the driving module includes a control processing chip and a driving circuit, and the control processing chip includes a signal input end and a signal output end;
the signal input end of the control processing chip is electrically connected with the output end of the second communication module, and the control processing chip is used for identifying the validity of the second control signal;
the input end of the driving circuit is electrically connected with the signal output end of the control processing chip, the output end of the driving circuit is electrically connected with the motor, and the driving circuit is used for driving the motor according to the second control signal so as to unlock or lock the ground knife padlock.
Optionally, the driving circuit is further configured to:
if the second control signal is effective, the motor is driven to enable the ground knife padlock to be in a locking state;
and if the second control signal is invalid, driving the motor to enable the ground knife padlock to be in an unlocking state.
Optionally, looped netowrk cabinet earthing switch padlock intelligence control system still includes the induction node, looped netowrk cabinet earthing switch padlock intelligence control device set up in inside the induction node, the induction node pass through the jack with the electrified display panel of looped netowrk cabinet is connected.
In a third aspect, an embodiment of the present invention further provides a ground knife padlock device, including the intelligent control system for a ground knife padlock of a ring main unit according to the second aspect.
The embodiment of the invention provides an intelligent control device and system for a ring main unit ground knife padlock and a ground knife padlock device, wherein the intelligent control device for the ring main unit ground knife padlock comprises a potential difference induction module, a filtering module, a voltage comparison module and a control module; the input end of the potential difference induction module is connected with the ring main unit, and the potential difference induction module is used for inducing the voltage of the ring main unit and outputting the voltage from the output end of the ring main unit; the input end of the filtering module is electrically connected with the output end of the potential difference induction module, the output end of the filtering module is electrically connected with the input end of the voltage comparison module, and the voltage comparison module is used for comparing the voltage output by the filtering module with a preset voltage and generating a trigger signal; the input end of the control module is electrically connected with the output end of the voltage comparison module, the output end of the control module is connected with the ground knife padlock, and the control module is used for generating a first control signal according to the trigger signal so as to control the state of the ground knife padlock. According to the technical scheme provided by the embodiment of the invention, the voltage of the ring main unit is sensed through the potential difference sensing module, whether the ring main unit is electrified or not is judged by combining the filtering module and the voltage comparison module, the first control signal is generated, the control module controls the ground switch padlock to be unlocked or locked according to the first control signal, the electrified state of the ring main unit equipment can be monitored in real time, the condition that whether the ring main unit is electrified or not is determined without manpower in the maintenance process, the state of the ground switch padlock is automatically controlled through the control module, the electrified ground switch can be prevented from being closed due to misoperation, and therefore, the safe operation of the ring main unit equipment is favorably improved, and the life and property safety of.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent control device for a ring main unit ground knife padlock according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of an intelligent control device for a ring main unit ground knife padlock according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of an intelligent control device for a ring main unit ground knife padlock according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of an intelligent control system for a ring main unit ground knife padlock according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of an intelligent control system for a ring main unit ground knife padlock according to a fifth embodiment of the present invention;
fig. 6 is a schematic structural diagram of an intelligent control system for a ring main unit ground switch padlock according to a sixth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
As described in the background, as the ring network of power transmission and distribution systems increases, the complexity of the line topology also increases. When the line ring main unit is in the process of transferring power supply, the original incoming line ring main unit can be changed into an outgoing line ring main unit due to the change of a line topological structure, so that the situation of electrified ground knife closing occurs in the maintenance process, and the five-prevention rule of electrical safety is seriously violated. Wherein, the five prevention means preventing the isolating switch from being switched on and off with load; the circuit breaker, the load switch and the contactor are prevented from being switched off and on by mistake; the circuit breaker and the load switch are prevented from being closed when the grounding switch is in a closed position; prevent the earthing switch from being switched on by mistake when electrified; prevent the wrong entering into the electrified interval. In the prior ring main unit, only one mechanical lock is hung on a ground knife, and a key is needed to unlock the ring main unit manually, so that the risk of electric shock exists; and the existing ground knife padlock has no any association with a cable head in the ring main unit when being electrified, only can play a role of warning, and cannot realize the function of locking the ground knife in an electrified way and preventing the ground knife from being closed by mistake.
In view of this, the embodiment of the present invention provides an intelligent control device and system for a ring main unit ground knife padlock, and a ground knife padlock device, where the intelligent control device for a ring main unit ground knife padlock includes a potential difference sensing module, a filtering module, a voltage comparison module, and a control module; the input end of the potential difference induction module is connected with the ring main unit, and the potential difference induction module is used for inducing the voltage of the ring main unit and outputting the voltage from the output end of the ring main unit; the input end of the filtering module is electrically connected with the output end of the potential difference induction module, the output end of the filtering module is electrically connected with the input end of the voltage comparison module, and the voltage comparison module is used for comparing the voltage output by the filtering module with a preset voltage and generating a trigger signal; the input end of the control module is electrically connected with the output end of the voltage comparison module, the output end of the control module is connected with the ground knife padlock, and the control module is used for generating a first control signal according to the trigger signal so as to control the state of the ground knife padlock. According to the technical scheme provided by the embodiment of the invention, the voltage of the ring main unit is sensed through the potential difference sensing module, whether the ring main unit is electrified or not is judged by combining the filtering module and the voltage comparison module, the first control signal is generated, the control module controls the ground switch padlock to be unlocked or locked according to the first control signal, the electrified state of the ring main unit equipment can be monitored in real time, the condition that whether the ring main unit is electrified or not is determined without manpower in the maintenance process, the state of the ground switch padlock is automatically controlled through the control module, the electrified ground switch can be prevented from being closed due to misoperation, and therefore, the safe operation of the ring main unit equipment is favorably improved, and the life and property safety of.
The above is the core idea of the present invention, and the following will clearly and completely describe the technical solution in the embodiment of the present invention with reference to the drawings in the embodiment of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
Example one
Fig. 1 is a schematic structural diagram of an intelligent control device for a ring main unit ground switch padlock according to an embodiment of the present invention, and referring to fig. 1, the intelligent control device for a ring main unit ground switch padlock according to an embodiment of the present invention includes: the voltage difference detection circuit comprises a potential difference induction module 200, a filtering module 300, a voltage comparison module 400 and a control module 500; the input end a1 of the potential difference sensing module 200 is connected with the ring main unit 100, and the potential difference sensing module 200 is used for sensing the voltage of the ring main unit 100 and outputting the voltage from the output end a2 thereof; an input end B1 of the filtering module 300 is electrically connected with an output end A2 of the potential difference sensing module 200, an output end B2 of the filtering module 300 is connected with an input end D1 of the voltage comparison module 400, and the voltage comparison module 400 is used for comparing the voltage output by the filtering module 300 with a preset voltage and generating a trigger signal; the input end E1 of the control module 500 is electrically connected to the output end D2 of the voltage comparison module 400, the output end E2 of the control module 500 is connected to the ground-knife padlock 600, and the control module 500 is configured to generate a first control signal according to the trigger signal to control the state of the ground-knife padlock 600.
Specifically, the ring main unit 100 is an electrical device in which a group of high-voltage switch devices are installed in a steel plate metal cabinet body or made into an assembled interval ring main power supply unit, and the core part of the electrical device adopts a load switch and a fuse, so that the electrical device has the advantages of simple structure, small volume, low price, capability of improving power supply parameters and performance, power supply safety and the like. When the ring main unit 100 is switched from the incoming line cabinet to the outgoing line cabinet, the upper-level coincidence switch is not disconnected, so that the ring main unit 100 is electrified, the input end a1 of the potential difference induction module 200 is connected with the ring main unit 100, based on the electromagnetic induction principle, the potential difference induction module 200 can induce the voltage of the ring main unit 100 and output the voltage from the output end a2 of the potential difference induction module 200 to the input end B1 of the filtering module 300, the filtering module 300 filters the voltage output by the potential difference induction module 200, and the filtered voltage is output to the voltage comparison module 400; the voltage comparison compares the voltage output by the filtering module 300 with a preset voltage by the module 400, wherein the preset voltage may be an engineering safety voltage, the voltage comparison module 400 outputs a trigger signal to the control module 500 according to a comparison result between the voltage output by the filtering module 300 and the preset voltage, and the control module 500 generates a first control signal according to the received trigger signal to control the state of the ground knife padlock. For example, the first control signal may be a level signal, when the voltage output by the filtering module 300 is greater than a preset voltage, the voltage comparing module 400 generates a first trigger signal (a power-on signal of the ring main unit 100), the control module 500 generates the first control signal according to the first trigger signal, at this time, the first control signal is a high level, and the ground knife padlock 600 locks after receiving the first control signal of the high level, so that the ground knife padlock is in a closed state, and the condition that the maintenance personnel is opened to affect the safety of the personnel or the equipment is prevented. When the voltage output by the filtering module 300 is less than the preset voltage, the voltage comparing module 400 generates a second trigger signal (the ring main unit 100 does not have an electrical signal), the control module 500 generates a first control signal according to the second trigger signal, at this time, the first control signal is at a low level, and the ground knife padlock 600 unlocks after receiving the first control signal at the low level, so that the ground knife padlock is in an open state, and the current ring main unit 100 is proved to be uncharged.
According to the technical scheme provided by the embodiment of the invention, the voltage of the ring main unit is sensed by the potential difference sensing module, whether the ring main unit is electrified or not is judged by combining the filtering module and the voltage comparison module, the first control signal is generated, the control module controls the ground switch padlock to be unlocked or locked according to the first control signal, the electrified state of the ring main unit equipment can be monitored in real time, the condition that whether the ring main unit is electrified or not is not required to be determined manually in the maintenance process, the state of the ground switch padlock is automatically controlled by the control module, the electrified ground switch can be prevented from being closed due to misoperation, and therefore, the safe operation of the ring main unit equipment is favorably improved, and the life and property.
Example two
As an alternative to the embodiment of the present invention, the control module 500 and the ground-knife padlock 600 may also perform communication control. Fig. 2 is a schematic structural diagram of an intelligent control device for a ring main unit earthing switch padlock according to a second embodiment of the present invention, and referring to fig. 2, on the basis of the second embodiment, the intelligent control device for a ring main unit earthing switch padlock according to the second embodiment of the present invention further includes a first communication module 700; the input end F1 of the first communication module 700 is electrically connected to the output end E2 of the control module 500, the output end F2 of the first communication module 700 is communicatively connected to the ground-knife padlock 600, the first communication module 700 is configured to output a second control signal to the ground-knife padlock 600 according to the first control signal, and the ground-knife padlock 600 is unlocked or locked according to the second control signal.
Specifically, the first communication module 700 may be a wireless bluetooth module or a wireless WiFi module. The first communication module 700 is communicatively coupled to the ground knife padlock 600. The first communication module 700 receives the first control signal output by the control module 500, and after the first control signal is converted into a second control signal by the communication circuit, the ground knife padlock 600 is controlled to be unlocked or locked, wherein the second control signal may be a live signal or an uncharged signal of the ring main unit. The advantage that sets up like this is, can reduce looped netowrk cabinet ground sword padlock intelligent control device's consumption, adopts wireless communication's mode can also simplify looped netowrk cabinet ground sword padlock intelligent control device's inner structure simultaneously, is favorable to reducing manufacturing cost.
EXAMPLE III
Fig. 3 is a schematic structural diagram of an intelligent control device for a ring main unit, namely a ring main unit, a ground switch padlock according to a third embodiment of the present invention, and fig. 3 exemplarily shows a circuit structure of a potential difference sensing module 200. Referring to fig. 3, the potential difference sensing module 200 includes a voltage sensor Q, an amplifier U1, a first resistor R1, and a first capacitor C1; a first end of the voltage sensor Q is electrically connected with a first input end of the amplifier U1, a second input end of the amplifier U1 is grounded, an output end of the amplifier U1 is electrically connected with an input end B1 of the filtering module 300, and a second end of the voltage sensor Q is grounded; a first end of the first resistor R1 is electrically connected to a first input terminal of the amplifier U1, a second end of the first resistor R1 is electrically connected to an output terminal of the amplifier U1, and the first capacitor C1 is connected in parallel with the first resistor R1.
Specifically, the voltage sensor Q is a potential difference sensing sensor, and the potential difference sensing module 200 is connected to the ring main unit 100. When the ring main unit 100 is charged, according to the principle of mutual attraction or repulsion between charged particles, the free charged particles in the voltage sensor Q can approach or leave from the ring main unit 100, so that the end of the voltage sensor Q close to the ring main unit 100 has charged particles which are different from the charges on the ring main unit 100, the end away from the ring main unit 100 has charged particles of the same number, and the voltage sensor Q forms a potential difference. One end of the voltage sensor Q with the same number of charged particles is electrically connected with a first capacitor C1, so that enough charged particles are accumulated on the first capacitor C1; meanwhile, the first capacitor C1 is also electrically connected to the first input terminal of the amplifier U1, and the second input terminal of the amplifier U1 is grounded, for example, the first input terminal of the amplifier U1 is a negative terminal and the second input terminal is a positive terminal. The same-sign charged particles stored in the first capacitor C1 are converted into a voltage signal (potential difference signal) by the amplifier U1, and output to the filter module 300 and input to the input terminal B1. The first resistor R1 is used for forming a feedback loop of the amplifier U1, and the first capacitor C1 is combined to realize stable output of the amplifier U1, so that the voltage signal output by the amplifier U1 is ensured to be stable. According to the embodiment of the invention, the potential difference induction sensor is adopted to induce the charged information of the ring main unit 100, the amplifier U1 is combined to output a potential difference signal which can be measured, the filtering module 300 and the voltage comparison module 400 judge whether the potential difference signal exceeds a preset voltage to determine whether the ring main unit is charged or not and generate a trigger signal, the control module 500 generates a first control signal according to the trigger control signal to control the ground knife padlock 600 to unlock or lock, the charged state of the ring main unit equipment can be monitored in real time, the ring main unit 100 does not need to be manually determined whether the ring main unit 100 is charged or not in the maintenance process, and the state of the ground knife padlock 600 is automatically controlled through the control module 500, so that the charged ground knife is prevented from being closed due to misoperation, and the safe operation of the ring main unit equipment is favorably.
Example four
The embodiment of the invention also provides an intelligent control system for the ring main unit ground switch padlock, which comprises the intelligent control device for the ring main unit ground switch padlock provided by any embodiment, and fig. 4 is a schematic structural diagram of the intelligent control system for the ring main unit ground switch padlock provided by the fourth embodiment of the invention. Referring to fig. 4, on the basis of the above embodiments, the intelligent control system for a ring main unit ground knife padlock further includes a ground knife padlock main body 800, the ground knife padlock 600 is disposed in the ground knife padlock main body 800, and the ground knife padlock main body 800 is in communication connection with the intelligent control device 10 for a ring main unit ground knife padlock.
Optionally, the ground knife padlock body 800 includes a second communication module 810, a driving module 820, a motor 830 and a power module 840, the second communication module 810, the driving module 820 and the motor 830 are electrically connected to the power module 840 respectively, and the motor 830 is electrically connected to the ground knife padlock 600; the input terminal G1 of the second communication module 810 is communicatively connected with the output terminal F2 of the first communication module 700, and the output terminal G2 of the second communication module 810 outputs the second control signal sent by the first communication module 700; the input end H1 of the driving module 820 is electrically connected to the output end G2 of the second communication module 810, the output end H2 of the driving module 820 is electrically connected to the motor 830, and the driving module 820 is configured to drive the motor 830 according to the second control signal to unlock or lock the ground knife padlock 600.
Specifically, looped netowrk cabinet ground sword padlock intelligent control system still includes induction node (not shown), and looped netowrk cabinet ground sword padlock intelligent control device 10 sets up inside induction node, and induction node passes through the jack and is connected with looped netowrk cabinet 100's electrified display panel. The live display panel is arranged on the ring main unit 100, the live display panel is provided with a jack, and the induction node is inserted into the jack. Since the voltage sensor Q in the potential difference sensing module 200 is a potential difference sensing sensor, when the sensing node is inserted into the charged display panel, the potential difference sensing module 200 can sense the charged particles on the ring main unit 100, so as to form a potential difference. The filtering module 300 filters the potential difference output by the potential difference sensing module 200, and the filtered voltage is output to the voltage comparing module 400 to be compared with a preset voltage; the voltage comparison module 400 outputs a trigger signal to the control module 500 according to a comparison result between the voltage output by the filtering module 300 and a preset voltage, and the control module 500 generates a first control signal according to the received trigger signal. The first communication module 700 and the second communication module 810 are all ultra-low power consumption wireless communication circuits, and the first control signal is converted into the second control signal by the first communication module 700 and then sent to the ground knife padlock body 800. The second communication module 810 receives the second control signal and transmits the second control signal to the driving module 820, and the driving module 820 drives the motor 830 to rotate according to the received second control signal, so as to close or open the ground knife padlock 600. The power module 840 is used for providing a power voltage for the second communication module 810, the driving module 820 and the motor 830. Illustratively, the control module 500 outputs a high-level first control signal according to the first trigger signal, the first communication module 700 sends the high-level first control signal to the second communication module 810, the second communication module 810 outputs the received high-level first control signal to the driving module 820, and the driving module 820 drives the motor 830 to rotate, so as to close the ground knife padlock 600.
The technical proposal provided by the embodiment of the invention realizes the wireless communication between the intelligent control device of the ring main unit ground switch padlock and the ground switch padlock through the first communication module and the second communication module, and generates a second control signal according to the first control signal output by the control module, and controls the ground knife padlock to unlock or lock in combination with the driving module, so that the charged state of the ring main unit equipment can be monitored in real time, in the maintenance process, whether the ring main unit is electrified or not does not need to be determined manually, the state of the ground knife padlock is automatically controlled through the control module, the electrified ground knife can be prevented from being closed due to misoperation, thereby being beneficial to improving the safe operation of the ring main unit equipment and ensuring the life and property safety of people, realizing the intelligent control of the state of the ground knife padlock in a wireless induction mode, under the electrified condition of looped netowrk cabinet, hang the locking with the ground sword and close and lock, prevent that electrified condition of closing the ground sword from taking place.
EXAMPLE five
Fig. 5 is a schematic structural diagram of an intelligent control system for a ring main unit ground knife padlock according to a fifth embodiment of the present invention. Referring to fig. 5, on the basis of the above embodiments, the driving module 820 includes a control processing chip U2 and a driving circuit 8201, and the control processing chip U2 includes a first signal input terminal 1 and a first signal output terminal 2; the first signal input end 1 of the control processing chip U2 is electrically connected with the output end G2 of the second communication module 810, and the control processing chip U2 is used for identifying the validity of the second control signal; the input end of the driving circuit 8201 is electrically connected with the first signal output end 2 of the control processing chip U2, the output end of the driving circuit 8201 is electrically connected with the motor 830, and the driving circuit 8201 is used for driving the motor 830 according to a second control signal so as to unlock or lock the ground knife padlock 600.
Specifically, the control processing chip U2 may be a DSP chip, and can determine the validity of the received second control signal. The validity of the second control signal refers to whether the second control signal contains the charging information of the ring main unit, that is, when the potential difference generated by the potential difference induction module 200 in an induction manner is greater than a preset voltage, it is proved that the ring main unit 100 is charged, and at this time, the second control signal is valid; when the potential difference generated by the potential difference sensing module 200 in the sensing manner is not greater than the preset voltage, it is determined that the ring main unit 100 is not powered, and the second control signal is invalid. Optionally, the driving circuit 8201 is further used for: if the second control signal is valid, the driving motor 830 makes the ground knife padlock 600 in a locked state; if the second control signal is invalid, the driving motor 830 may place the ground knife padlock 600 in the unlocked state. Exemplarily, the control processing chip U2 may determine the validity of the second control signal according to the level of the second control signal, and when the second control signal received by the control processing chip U2 is a high level, it proves that the second control signal is valid, and then the control circuit 8201 generates a motor forward rotation signal to drive the motor 830 to rotate forward, so that the ground knife padlock 600 is closed; when the second control signal received by the control chip U2 is at a low level, it is verified that the second control signal is invalid, and the control circuit 8201 generates a motor reverse rotation signal to drive the motor 830 to reverse rotation, so that the ground knife padlock 600 is opened. The state of the ground knife padlock 600 can be automatically controlled through the control processing chip U2, so that the maintainers can conveniently and accurately identify the charged state of the ring main unit 100, and the safe operation of human life and property and power distribution equipment is guaranteed.
With continued reference to fig. 5, the specific working principle of the ring main unit ground knife padlock intelligent control system provided by the embodiment of the present invention is as follows:
looped netowrk cabinet ground sword padlock intelligence control system includes induction node and ground sword padlock main part 800, and looped netowrk cabinet 100 includes electrified display panel, is provided with the jack on the electrified display panel, and induction node inserts to the jack. The induction node comprises a ring main unit ground knife padlock intelligent control device 10, when the induction node is inserted into a jack on a charged display panel, the potential difference induction module 200 induces charged particles on the ring main unit 100 to form potential difference, the filtering module 300 filters the potential difference output by the potential difference induction module 200, and the filtered voltage is output to the voltage comparison module 400 to be compared with preset voltage; the voltage comparison module 400 outputs a trigger signal to the control module 500 according to a comparison result between the voltage output by the filtering module 300 and a preset voltage, and the control module 500 generates a first control signal according to the received trigger signal. When the voltage output by the filtering module 300 is greater than the preset voltage, the first control signal is at a high level; when the voltage output by the filtering module 300 is not greater than the preset voltage, the first control signal is at a low level. The first communication module 700 and the second communication module 810 are all ultra-low power consumption wireless communication circuits, and the first control signal is converted into the second control signal by the first communication module 700 and then sent to the ground knife padlock body 800. The ground knife padlock body 800 includes a ground knife padlock 600, and the ground knife padlock 600 may be a mechanical-electrical padlock. The control processing chip U2 may determine the validity of the second control signal according to the level of the second control signal, and when the second control signal received by the control processing chip U2 is at a high level, it is verified that the second control signal is valid, and then the control circuit 8201 is controlled to generate a motor forward rotation signal to drive the motor 830 to rotate forward, so that the ground knife padlock 600 is closed; when the second control signal received by the control chip U2 is at a low level, it is verified that the second control signal is invalid, and the control circuit 8201 generates a motor reverse rotation signal to drive the motor 830 to reverse rotation, so that the ground knife padlock 600 is opened.
The technical scheme provided by the embodiment of the invention has the advantages that the voltage of the ring main unit is sensed by the potential difference sensing module, whether the ring main unit is electrified or not is judged by combining the filtering module and the voltage comparison module, the first control signal is generated, the close-distance wireless communication between the intelligent control device for the ring main unit ground switch padlock and the ground switch padlock is realized by the first communication module and the second communication module, the second control signal is generated according to the first control signal output by the control module, the drive module is combined to control the ground switch to unlock or lock the padlock, the reliability of the detection of whether the ring main unit is electrified or not is improved, the electrified state of the ring main unit equipment can be monitored in real time, the ring main unit is not required to be manually determined whether the ring main unit is electrified or not in the overhauling process, the state of the ground switch padlock is automatically controlled by the control module, the electrified ground switch caused by misoperation is prevented, and the safe operation of the, and realize the state of intelligent control ground sword padlock through the mode of wireless response, under the electrified circumstances of looped netowrk cabinet, hang the locking with the ground sword and close and lock, prevent to close the circumstances of ground sword with electricity and take place, realized whether electrified linkage of ground sword padlock and looped netowrk cabinet.
EXAMPLE six
Fig. 6 is a schematic structural diagram of an intelligent control system for a ring main unit ground switch padlock according to a sixth embodiment of the present invention, and referring to fig. 6, the intelligent control system for a ring main unit ground switch padlock according to the sixth embodiment of the present invention includes an intelligent control device 10 for a ring main unit ground switch padlock and a main body 800 for a ground switch padlock. The intelligent control device 10 for the ring main unit ground knife padlock comprises a potential difference sensing module 200, a filtering module 300, a voltage comparison module 400, a control module 500 and a first communication module 700.
The potential difference sensing module 200 comprises a voltage sensor Q, an amplifier U1, a first resistor R1 and a first capacitor C1; a first end of the voltage sensor Q is electrically connected with a first input end of the amplifier U1, a second input end of the amplifier U1 is grounded, an output end of the amplifier U1 is electrically connected with an input end B1 of the filtering module 300, and a second end of the voltage sensor Q is grounded; a first end of the first resistor R1 is electrically connected to a first input terminal of the amplifier U1, a second end of the first resistor R1 is electrically connected to an output terminal of the amplifier U1, and the first capacitor C1 is connected in parallel with the first resistor R1.
The filtering module 300 includes a second resistor R2, a second capacitor C2, and a third capacitor C3, wherein a first end of the second resistor R2 is electrically connected to the output end of the amplifier U1, a second end of the second resistor R2 is electrically connected to the input end D1 of the voltage comparison module 400, a first end of the second capacitor C2 is electrically connected to the first end of the second resistor R2, a second end of the second capacitor C2 is grounded, a first end of the third capacitor C3 is electrically connected to the second end of the second resistor R2, and a second end of the third capacitor C3 is grounded.
The voltage comparison module 400 includes a voltage comparator U3 and a third resistor R3, a first input terminal of the voltage comparator U3 is electrically connected to a second terminal of the second resistor R2, a second input terminal of the voltage comparator U3 is connected to a preset voltage Vref, an output terminal of the voltage comparator U3 is electrically connected to an input terminal E1 of the control module 500, a first terminal of the third resistor R3 is electrically connected to an output terminal of the voltage comparator U3, and a second terminal of the third resistor R3 is grounded.
The potential difference sensing module 200 is connected with the ring main unit 100. When the ring main unit 100 is charged, according to the principle of mutual attraction or repulsion between charged particles, the free charged particles in the voltage sensor Q can approach or leave from the ring main unit 100, so that the end of the voltage sensor Q close to the ring main unit 100 has charged particles which are different from the charges on the ring main unit 100, the end away from the ring main unit 100 has charged particles of the same number, and the voltage sensor Q forms a potential difference. One end of the voltage sensor Q with the same number of charged particles is electrically connected with a first capacitor C1, so that enough charged particles are accumulated on the first capacitor C1; meanwhile, the first capacitor C1 is also electrically connected to the first input terminal of the amplifier U1, and the second input terminal of the amplifier U1 is grounded, for example, the first input terminal of the amplifier U1 is a negative terminal and the second input terminal is a positive terminal. The same-sign charged particles stored in the first capacitor C1 are converted into a voltage signal (potential difference signal) through the amplifier U1, and output to the filter module 300, and input to the input terminal B1, and are filtered through the second resistor R2, the second capacitor C2, and the third capacitor C3. The first resistor R1 is used for forming a feedback loop of the amplifier U1, and the first capacitor C1 is combined to realize stable output of the amplifier U1, so that the voltage signal output by the amplifier U1 is ensured to be stable. The filtered voltage is input to a first input end of the voltage comparator U3, and compared with a preset voltage Vref to determine whether the ring main unit is electrified, and a trigger signal is generated, and the control module 500 generates a first control signal according to the trigger signal. The control module 500 may be a single chip or a DSP.
The first communication module 700 and the second communication module 810 may be transceiver chips for implementing the short range wireless communication. The first communication module 700 and the second communication module 810 are all ultra-low power consumption wireless communication circuits, and the first control signal is converted into the second control signal by the first communication module 700 and then sent to the ground knife padlock body 800. The second communication module 810 receives the second control signal and transmits the second control signal to the driving module 820, and the driving module 820 drives the motor 830 to rotate according to the received second control signal, so as to close or open the ground knife padlock 600. The driving module 820 includes a control processing chip U2, a fourth resistor R4, a fourth capacitor C4, and a fifth capacitor C5. The control processing chip U2 may be a motor driving chip, and the output terminal G2 of the second communication module 810 includes a first output terminal and a second output terminal, which are respectively connected to the first signal input terminal 1 and the second signal input terminal 3 of the control processing chip U2. The first signal output end 2 and the second signal output end 4 of the control processing chip U2 are respectively connected with the positive electrode and the negative electrode of the motor 830, the first end of the fourth capacitor C4 is electrically connected with the power supply end of the control processing chip U2, and the second end of the fourth capacitor C4 is grounded; a first end of the fourth resistor R4 is electrically connected to the first signal output end 2 of the control processing chip U2, a second end of the fourth resistor R4 is electrically connected to the positive electrode of the motor 830, a second signal output end of the control processing chip U2 is electrically connected to the negative electrode of the motor 830, a first end of the fifth capacitor C5 is electrically connected to a second end of the fourth resistor R4, and a second end of the fifth capacitor C5 is electrically connected to the second signal output end 2 of the control processing chip U2. Illustratively, when the potential difference generated by the potential difference sensing module 200 in a sensing manner is greater than a preset voltage, it is proved that the ring main unit 100 is electrified, the control module 500 outputs a first control signal with a high level, the first control signal with the high level is converted into a second control signal with a high level through the first communication module 700 and the second communication module 810, the first signal input end 1 of the control processing chip U2 receives the second control signal with the high level, and the driving motor 830 rotates forward, so that the ground knife padlock 600 is locked. When the potential difference generated by the potential difference sensing module 200 in an sensing manner is not greater than the preset voltage, it is proved that the ring main unit 100 is not charged, the control module 500 outputs a first control signal of a low level, the first control signal of the low level is converted into a second control signal of the low level through the first communication module 700 and the second communication module 810, the second signal input end 3 of the control processing chip U2 receives the second control signal of the low level, and the driving motor 830 is inverted, so that the ground knife padlock 600 is unlocked.
EXAMPLE seven
The embodiment of the invention also provides a ground knife padlock device which comprises the intelligent control system for the ground knife padlock of the ring main unit provided by any embodiment. The intelligent control system comprises a control module, a control module and a control module, wherein the control module is used for controlling the control module to control the control module to.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. The utility model provides a looped netowrk cabinet ground sword padlock intelligent control device which characterized in that includes: the device comprises a potential difference induction module, a filtering module, a voltage comparison module and a control module;
The input end of the potential difference induction module is connected with the ring main unit, and the potential difference induction module is used for inducing the voltage of the ring main unit and outputting the voltage from the output end of the ring main unit;
the input end of the filtering module is electrically connected with the output end of the potential difference induction module, the output end of the filtering module is electrically connected with the input end of the voltage comparison module, and the voltage comparison module is used for comparing the voltage output by the filtering module with a preset voltage and generating a trigger signal;
the input end of the control module is electrically connected with the output end of the voltage comparison module, the output end of the control module is connected with the ground knife padlock, and the control module is used for generating a first control signal according to the trigger signal so as to control the state of the ground knife padlock.
2. The intelligent control device for the ring main unit earthing switch padlock according to claim 1, characterized by further comprising a first communication module;
the input end of the first communication module is electrically connected with the output end of the control module, the output end of the first communication module is in communication connection with the ground-knife padlock, the first communication module is used for outputting a second control signal to the ground-knife padlock according to the first control signal, and the ground-knife padlock is unlocked or locked according to the second control signal.
3. The intelligent control device for the ring main unit ground knife padlock according to claim 1, wherein the potential difference sensing module comprises a voltage sensor, an amplifier, a first resistor and a first capacitor;
the first end of the voltage sensor is electrically connected with the first input end of the amplifier, the second input end of the amplifier is grounded, the output end of the amplifier is electrically connected with the input end of the filtering module, and the second end of the voltage sensor is grounded;
the first end of the first resistor is electrically connected with the first input end of the amplifier, the second end of the first resistor is electrically connected with the output end of the amplifier, and the first capacitor is connected with the first resistor in parallel.
4. The intelligent control device for the ring main unit earthing switch padlock according to claim 3, wherein the voltage sensor is a potential difference induction sensor.
5. An intelligent control system for a ring main unit floor knife padlock, comprising the intelligent control device for a ring main unit floor knife padlock as claimed in any one of claims 1 to 4, and further comprising a floor knife padlock main body, wherein the floor knife padlock is arranged in the floor knife padlock main body, and the floor knife padlock main body is in communication connection with the intelligent control device for a ring main unit floor knife padlock.
6. The intelligent control system for a ring main unit ground knife padlock as claimed in claim 5, wherein the ground knife padlock main body comprises a second communication module, a driving module, a motor and a power module, the second communication module, the driving module and the motor are respectively electrically connected with the power module, and the motor is electrically connected with the ground knife padlock;
the input end of the second communication module is in communication connection with the output end of the first communication module, and the output end of the second communication module outputs a second control signal sent by the first communication module;
the input end of the driving module is electrically connected with the output end of the second communication module, the output end of the driving module is electrically connected with the motor, and the driving module is used for driving the motor according to the second control signal so as to unlock or lock the ground knife padlock.
7. The intelligent control system for the ring main unit earthing switch padlock according to claim 6, wherein the driving module comprises a control processing chip and a driving circuit, and the control processing chip comprises a signal input end and a signal output end;
the signal input end of the control processing chip is electrically connected with the output end of the second communication module, and the control processing chip is used for identifying the validity of the second control signal;
The input end of the driving circuit is electrically connected with the signal output end of the control processing chip, the output end of the driving circuit is electrically connected with the motor, and the driving circuit is used for driving the motor according to the second control signal so as to unlock or lock the ground knife padlock.
8. The intelligent control system for a ring main unit, ground knife and padlock according to claim 7, wherein the driving circuit is further configured to:
if the second control signal is effective, the motor is driven to enable the ground knife padlock to be in a locking state;
and if the second control signal is invalid, driving the motor to enable the ground knife padlock to be in an unlocking state.
9. The intelligent control system for a ring main unit earthing switch padlock according to claim 5, wherein the intelligent control system for a ring main unit earthing switch padlock further comprises an induction node, the intelligent control device for a ring main unit earthing switch padlock is arranged inside the induction node, and the induction node is connected with a live display panel of the ring main unit through a jack.
10. A locking device for a ground switch, characterized by comprising the intelligent control system for a ground switch padlock of a ring main unit according to any one of claims 5 to 9.
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