CN115549305B - Pressing plate state detection system - Google Patents
Pressing plate state detection system Download PDFInfo
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- CN115549305B CN115549305B CN202211324082.6A CN202211324082A CN115549305B CN 115549305 B CN115549305 B CN 115549305B CN 202211324082 A CN202211324082 A CN 202211324082A CN 115549305 B CN115549305 B CN 115549305B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The application discloses a clamp plate state detection system, which belongs to the technical field of power equipment and comprises a clamp plate, a clamp plate state detection module and a site condition detection module, wherein the clamp plate state detection module is connected with the clamp plate, generates a clamp plate state detection signal according to the opening and closing state of the clamp plate and sends the clamp plate state detection signal to a control terminal; the field condition detection module generates a field condition detection signal according to the field working condition of an operator and sends the field condition detection signal to the control terminal. The master station personnel can learn that operating personnel are in near the distribution terminal through the control terminal and maintain the operation, and then make master station personnel can not carry out closed operation to the clamp plate of disconnection at this moment, prevent to a certain extent that remote master station operating personnel maloperation from carrying out clamp plate closing operation, lead to on-the-spot fortune dimension personnel to take place the electric shock event, and then improve operating personnel operation process's security.
Description
Technical Field
The application relates to the technical field of power equipment, in particular to a pressing plate state detection system.
Background
The clamp plate is very important secondary equipment in the electric power system, and the accuracy of clamp plate operation is closely related with the security degree of electric wire netting operation, and the prerequisite that improves clamp plate operation accuracy is can carry out reliable detection to the clamp plate state, when clamp plate state detection mode unsuitable, can influence the correct execution of the original operational function of clamp plate with certainty.
The prior Chinese patent with the publication number of CN203104111U discloses a pressing plate state detection device, which comprises an induction accessory, a sensor module, an intelligent detection module, a physical connecting piece and a pressing plate controller, wherein the sensor module detects a switching operation action signal of a pressing plate transmitted by the induction accessory, so as to realize detection of the switching state of the pressing plate and indication of the state of the pressing plate; the intelligent detection module is used for acquiring output information of the sensor module, the intelligent detection module transmits acquired pressure plate state information to the pressure plate controller through the communication circuit, and the pressure plate controller transmits the pressure plate state information to the computer management system.
At present, a remote control pressing plate is usually used on a domestic power distribution terminal and used for cutting off a remote control loop. When an operator needs to carry out maintenance operation on a power distribution terminal on site, the operator needs to manually disconnect the remote control pressing plate, so that the circuit maintenance environment is in a power-off state. In the process, although the master station personnel can detect the state of the pressing plate through the control terminal, the master station personnel cannot know the operation condition of the operating personnel on site, when the operating personnel are still in site for maintenance operation, and when the master station personnel operate the remote control pressing plate to communicate, the operating personnel can maintain the power distribution terminal under the condition of being electrified, so that the operation danger coefficient of the site operating personnel is improved.
Disclosure of Invention
The utility model provides a to the not enough that prior art exists, provide a clamp plate state detecting system, can make operating personnel in the operation process, the clamp plate is difficult for being closed by master station personnel remote control, and then guarantees operating personnel operation process's security.
The technical scheme for solving the technical problems is as follows:
the pressure plate state detection system comprises a pressure plate, a pressure plate state detection module and a field condition detection module, wherein the pressure plate state detection module is connected with the pressure plate, and generates a pressure plate state detection signal according to the opening and closing state of the pressure plate and sends the pressure plate state detection signal to a control terminal; the field condition detection module generates a field condition detection signal according to the field working condition of an operator and sends the field condition detection signal to the control terminal.
Through adopting above-mentioned technical scheme, when operation and maintenance personnel maintain the operation in the scene, operation and maintenance personnel manual work breaks away from the remote control clamp plate, and clamp plate state detection module detects the state of opening and close of clamp plate in real time this moment to generate clamp plate state detection signal according to the state of opening and close of clamp plate, clamp plate state detection module sends clamp plate state detection signal to control terminal in real time, makes master station personnel can learn the state of opening and close of clamp plate through control terminal. When an operator performs maintenance operation nearby the power distribution terminal, the field condition detection module generates a field condition detection signal according to the field working condition of the operator by detecting and identifying the position of the operator and sends the field condition detection signal to the control terminal, so that a master station operator can know that the operator is in the vicinity of the power distribution terminal to perform maintenance operation through the control terminal, and further the master station operator can not perform closing operation on an opened pressing plate at the moment, the remote master station operator is prevented from performing pressing plate closing operation by misoperation to a certain extent, electric shock events are caused to the field operation and maintenance operator, and the safety of the operation process of the operator is improved.
Further, the field condition detection module comprises an infrared detection submodule arranged on the power distribution terminal, the infrared detection submodule is used for detecting whether an operator exists near the power distribution terminal in real time, and the infrared detection submodule generates an infrared detection signal according to the existence condition of the operator and sends the infrared detection signal to the control terminal.
Further, a timer connected with the infrared detection submodule is arranged in the power distribution terminal, the timer responds to the infrared detection signal sent by the infrared detection submodule to accumulate time length, and when the time length of the timer reaches a preset time threshold, the timer generates a timing control signal and sends the timing control signal to the control terminal.
Further, a remote platen standby module connected in parallel with the platen is arranged in the power distribution terminal, and the remote platen standby module responds to a remote control signal of the control terminal to operate.
Further, the control terminal responds to the control signal of the timer to control the operation of the remote pressing plate standby module.
Further, an indication module connected with the remote pressure plate standby module is arranged in the power distribution terminal, and the indication module responds to an enabling signal of the remote pressure plate standby module to operate.
Further, when the remote pressing plate standby module is closed, if the pressing plate state detection module detects that the pressing plate state is the closed state, the pressing plate state detection module generates a pressing plate closed state detection signal according to the closed state of the pressing plate and sends the pressing plate closed state detection signal to the control terminal, and the control terminal responds to the pressing plate closed state detection signal to control the remote pressing plate standby module to be opened.
Further, the pressing plate state detection module comprises an FPGA sub-module, a pressing plate front detection sub-module and a pressing plate rear detection sub-module;
the front detection sub-module of the pressing plate is used for detecting the on-off condition of a front loop of the pressing plate, and generates a front detection signal of the pressing plate according to the on-off condition of the front loop of the pressing plate and sends the front detection signal to the FPGA sub-module;
the post-pressing detection submodule is used for detecting the on-off condition of a post-pressing loop, and generating a post-pressing detection signal according to the on-off condition of the post-pressing loop and sending the post-pressing detection signal to the FPGA submodule;
the FPGA sub-module is used for analyzing and judging the opening and closing states of the pressing plate according to the front detection signal of the pressing plate and the rear detection signal of the pressing plate.
Further, the pressing plate is connected with a passage detection module, the passage detection module is used for detecting the energizing condition of the circuit, and the passage detection module generates a passage detection signal according to the energizing condition of the circuit and sends the passage detection signal to the control terminal.
In summary, compared with the prior art, the beneficial effects of the technical scheme are as follows:
when operation and maintenance personnel carry out maintenance operation on site, the operation and maintenance personnel manually disconnect the remote control clamp plate, and the clamp plate state detection module detects the start-stop state of the clamp plate in real time at this moment to generate clamp plate state detection signals according to the start-stop state of the clamp plate, the clamp plate state detection module sends the clamp plate state detection signals to the control terminal in real time, and the master station personnel can learn the start-stop state of the clamp plate through the control terminal. When an operator performs maintenance operation nearby the power distribution terminal, the field condition detection module generates a field condition detection signal according to the field working condition of the operator by detecting and identifying the position of the operator and sends the field condition detection signal to the control terminal, so that a master station operator can know that the operator is in the vicinity of the power distribution terminal to perform maintenance operation through the control terminal, and further the master station operator can not perform closing operation on an opened pressing plate at the moment, the remote master station operator is prevented from performing pressing plate closing operation by misoperation to a certain extent, electric shock events are caused to the field operation and maintenance operator, and the safety of the operation process of the operator is improved.
Drawings
FIG. 1 is a schematic diagram of an overall circuit in an embodiment of the present application;
fig. 2 is a block diagram of modules in an embodiment of the present application.
Reference numerals illustrate: 1. a platen state detection module; 11. an FPGA sub-module; 12. a detection sub-module in front of the pressing plate; 13. detecting the submodule after pressing the plate; 2. a field condition detection module; 3. an infrared detection sub-module; 4. a remote pressing plate standby module; 5. an indication module; 6. a path detection module; 7. a local remote control module; 8. a remote control module; 9. and (5) breaking the wire and putting into the module.
Detailed Description
The principles and features of the present application are described below with reference to fig. 1-2, the examples being provided for illustration only and not for limitation of the scope of the present application.
The embodiment of the application discloses a pressing plate state detection system. Referring to fig. 1 and 2, a platen condition detection system includes a platen Y1, a platen condition detection module 1, and a field condition detection module 2. The clamp plate Y1, clamp plate state detection module 1 and scene condition detection module 2 all set up in the distribution terminal, and clamp plate state detection module 1 is connected with clamp plate Y1.
The pressing plate state detection module 1 generates a pressing plate state detection signal according to the opening and closing state of the pressing plate Y1 and sends the pressing plate state detection signal to the control terminal, and the pressing plate state detection signal is used for detecting the working state of the pressing plate Y1 in real time; the field condition detection module 2 generates a field condition detection signal according to the field working condition of an operator and sends the field condition detection signal to the control terminal, and the field condition detection signal is used for detecting whether the operator who is carrying out maintenance work exists near the power distribution terminal.
When operation and maintenance personnel carry out maintenance operation on site, the operation and maintenance personnel manually disconnect the remote control clamp plate Y1, and the clamp plate state detection module 1 detects the start-stop state of the clamp plate Y1 in real time at this moment to generate clamp plate state detection signals according to the start-stop state of the clamp plate Y1, the clamp plate state detection module 1 sends the clamp plate state detection signals to the control terminal in real time, so that master station personnel can know the start-stop state of the clamp plate Y1 through the control terminal.
When an operator performs maintenance operation nearby the power distribution terminal, the field condition detection module 2 detects and identifies the position of the operator, generates a field condition detection signal according to the field working condition of the operator and sends the field condition detection signal to the control terminal, so that a master station operator can know that the operator is in the vicinity of the power distribution terminal to perform maintenance operation through the control terminal, and further the master station operator can not perform closing operation on the disconnected pressing plate Y1 at the moment, so that remote master station operator misoperation is prevented from performing pressing plate Y1 closing operation to a certain extent, electric shock events are caused to the field operation and maintenance operator, and the safety of the operation process of the operator is improved.
The platen state detection module 1 includes an FPGA sub-module 11, a platen front detection sub-module 12, and a platen rear detection sub-module 13. The FPGA sub-module 11 includes an FPGA chip, specifically, the type of the FPGA chip may be EF2L15LG144B; one end of the detection submodule 12 before the pressing plate is connected with the FPGA chip, the other end of the detection submodule 12 before the pressing plate is connected with the pressing plate Y1, one end of the detection submodule 13 after the pressing plate is connected with the FPGA chip, and the other end of the detection submodule 13 after the pressing plate is connected with the pressing plate Y1. The front pressing plate detection sub-module 12 and the rear pressing plate detection sub-module 13 are respectively and electrically connected with two ends of the pressing plate Y1.
As an embodiment, the detection submodule 12 before the pressing plate includes a triode Q1, the triode Q1 is an NPN triode, a collector of the triode Q1 is connected with a 5V power supply through a resistor R4, an emission set of the triode Q1 is grounded, one side of the triode Q1 is connected with a diode D1 through an optocoupler E1, an anode of the diode D1 is connected with a 48V power supply through a resistor R3, and a cathode of the diode D1 is connected with an end of the pressing plate rear detection submodule 13 far away from the pressing plate Y1.
As an implementation manner, the post-pressing detection submodule 13 includes a triode Q2, the triode Q2 is an NPN type triode, a collector of the triode Q2 is connected with a 5V power supply through a resistor R5, an emission set of the triode Q2 is grounded, one side of the triode Q2 is connected with a diode D2 through an optocoupler E2, an anode of the diode D2 is connected with a 48V power supply through a resistor R6, and a cathode of the diode D2 is connected with an end of the diode D1 far away from the pressing plate Y1.
The pressing plate is connected with a passage detection module 6, the passage detection module 6 is used for detecting the energizing condition of the circuit, and the passage detection module 6 generates a passage detection signal according to the energizing condition of the circuit and sends the passage detection signal to the control terminal. As one embodiment, the path detection module 6 includes a primary switch coil M, one end of which is connected to an end of the platen near the diode D2, and the other end of which is grounded.
The control terminal judges the current circuit energizing operation condition through the working state of the primary switch coil M, when the primary switch coil M is in a normal state, the circuit operation process is indicated to have no breaking phenomenon, when the primary switch coil M is in a breaking state, the primary switch coil M is indicated to have breaking points, the primary switch coil M is possibly damaged, and the current circuit cannot normally perform opening and closing operations if the primary switch coil M is possibly damaged, or the circuit is not wired in a certain place.
The detection submodule 12 before the clamp plate is used for detecting the on-off condition of a loop before the clamp plate, when the clamp plate Y1 is closed and the primary switch coil M normally operates, the optical coupler front stage of the detection submodule 12 before the clamp plate is conducted, so that the optical coupler rear stage of the detection submodule 12 before the clamp plate is conducted, the detection submodule 12 before the clamp plate inputs a low-level signal of a voltage signal to the FPGA chip, and the function that the detection submodule 12 before the clamp plate generates the detection signal before the clamp plate according to the on-off condition of the loop before the clamp plate and sends the detection signal to the FPGA submodule 11 is realized.
Similarly, the post-pressing detection sub-module 13 is used for detecting the on-off condition of a post-pressing loop, when the primary switch coil M normally operates, the optical coupler of the post-pressing detection sub-module 13 is conducted in a front stage, so that the optical coupler of the post-pressing detection sub-module 13 is conducted in a rear stage, the post-pressing detection sub-module 13 inputs a low-level signal of a voltage signal to the FPGA chip, and the post-pressing detection sub-module 13 generates a post-pressing detection signal according to the on-off condition of the post-pressing loop and sends the post-pressing detection signal to the FPGA sub-module 11.
The FPGA sub-module 11 is configured to analyze and determine an on-off state of the platen Y1 according to the pre-platen detection signal and the post-platen detection signal, and meanwhile, can learn an on-off condition of a current circuit connection.
When the front detection sub-module 12 and the rear detection sub-module 13 of the pressing plate both input low-level signals to the FPGA sub-module 11, the pressing plate Y1 is closed at the moment, and the primary switch coil M operates normally; when the detection sub-module 12 before the pressing plate inputs a high-level signal to the FPGA sub-module 11, and the detection sub-module 13 after the pressing plate inputs a low-level signal to the FPGA sub-module 11, this means that the pressing plate Y1 is disconnected at this time, and the primary switch coil M operates normally.
The detection sub-module 12 before the clamp plate and the detection sub-module 13 after the clamp plate are respectively and electrically connected with two ends of the clamp plate Y1, when the clamp plate Y1 is in a closed state, 48V voltage passes through R3 resistor and passes through the front stage of the optocoupler E1, reaches the clamp plate Y1, reaches the primary switch coil M again and then is grounded, so that after the circuit is provided, the detection sub-module 12 before the clamp plate is conducted due to the optocoupler E1, and outputs a low level at the moment, and similarly, the detection sub-module 13 after the clamp plate also outputs a low level, when the detection sub-module 12 before the clamp plate and the detection sub-module 13 after the clamp plate both output a low level, the clamp plate Y1 is indicated to be in a closed state at the moment, and the external coil is in a normal state.
When the pressing plate Y1 is in the off state, the optocoupler E1 cannot be turned on at this time, and then the pressing plate front detection sub-module 12 outputs a high level at this time under the action of 5V voltage, and the pressing plate rear detection sub-module 13 outputs a low level, so when the pressing plate front detection sub-module 12 outputs a high level and the pressing plate rear detection sub-module 13 outputs a low level, the pressing plate Y1 is indicated to be in the off state, and the primary switch coil M is in the normal state.
Be provided with broken string input module 9 in the distribution terminal, broken string input module 9 is connected with primary switch coil M, and as an embodiment, broken string input module 9 includes diode D3, and diode D3's positive pole passes through resistance R7 and is connected with the FPGA chip, and diode D3's negative pole ground connection, diode D3's one side is connected with triode Q3 through opto-coupler E3, and triode Q3's emission collection ground connection, triode Q2's collecting electrode is connected with primary switch coil M one end of keeping away from the earth side through resistance R8.
When the detection submodule 13 inputs a high-level signal to the FPGA submodule 11 after the pressing plate, the primary switch coil M is in a broken line state, and the FPGA submodule 11 is required to output a high level to the broken line input module 9 at the moment, so that the reason that the primary switch coil M is in the broken line state is continuously judged.
The state that the primary switch coil M is abnormal means that the control loop has a broken line, at this time, the optocoupler E2 is not turned on, the post-pressing detection sub-module 13 outputs a high level, when the FPGA sub-module 11 detects that the post-pressing detection sub-module 13 is high level, the FPGA sub-module 11 immediately outputs the broken line input module 9 to make E3 turned on, at this time, the FPGA sub-module 11 determines the states of the pre-pressing detection sub-module 12 and the post-pressing detection sub-module 13 again to determine whether the pressing plate Y1 is in a closed state or a separated state.
When the detection submodule 12 before the pressing plate outputs low level to the FPGA submodule 11, the pressing plate Y1 is closed at the moment, and the external primary switch coil M is disconnected; when the detection submodule 12 before the pressing plate outputs a high level to the FPGA submodule 11, the pressing plate Y1 is disconnected at the moment, and the external primary switch coil M is disconnected; through the logic judgment, the opening and closing state of the pressing plate Y1 can be accurately judged, and meanwhile, whether the external coil M is in a normal working state or not can be detected.
The field condition detection module 2 comprises an infrared detection sub-module 3 arranged on the power distribution terminal, the infrared detection sub-module 3 is used for detecting whether an operator exists near the power distribution terminal in real time, and the infrared detection sub-module 3 generates an infrared detection signal according to the existence condition of the operator and sends the infrared detection signal to the control terminal.
The power distribution terminal is internally provided with a timer connected with the infrared detection sub-module 3, the timer accumulates time length in response to the infrared detection signal sent by the infrared detection sub-module 3, and when the time length of the timer reaches a preset time threshold value, the timer generates a timing control signal and sends the timing control signal to the control terminal.
As an implementation manner, the infrared detection sub-module 3 includes an infrared sensor connected with the FPGA chip, the infrared sensor detects whether an operator exists near the power distribution terminal in real time, when the operator exists, the infrared sensor outputs a high level to the FPGA chip, and when no operator exists, the infrared sensor outputs a low level to the FPGA chip.
The timer accumulates time length in response to the infrared detection signal sent by the infrared detection sub-module 3, when the duration of the high level detected by the FPGA chip is longer than 5 minutes, the FPGA chip judges that an operator exists near the power distribution terminal, and when the duration of the low level detected by the FPGA chip is longer than 5 minutes, the FPGA chip judges that no operator exists near the power distribution terminal.
Specifically, in the embodiment of the present application, the preset time threshold is set to 24 hours, and if the timing duration of the timer reaches 24 hours, the timer generates a timing control signal and sends the timing control signal to the control terminal, so that the control terminal prompts the master station personnel that no operator exists in the vicinity of the power distribution terminal for 24 hours, which indicates that the operator forgets to close the pressing plate Y1 and leaves the pressing plate Y1 with a high probability.
A remote pressing plate standby module 4 connected with the pressing plate Y1 in parallel is arranged in the power distribution terminal, and the remote pressing plate standby module 4 responds to a remote control signal of the control terminal to operate. As an implementation mode, the remote pressing plate standby module 4 comprises a standby switch connected with the pressing plate Y1 in parallel, one side of the pressing plate Y1 is connected with a resistor R14 through a relay J3, one end of the resistor R14 is connected with a 5V power supply, the other end of the resistor R14 is connected with a resistor R11 and a triode Q4, the end part of the resistor R11, far away from the resistor R14, is connected with a 5V power supply, a collector electrode of the triode Q4 is connected with the resistor R11, an emission set of the triode Q4 is grounded, and a base electrode of the triode Q4 is connected with an FPGA chip through a resistor R12.
When the on-site operation and maintenance personnel forget to close the pressing plate Y1 and leave the maintenance site after maintenance or debugging, the master station personnel remotely controls the remote pressing plate standby module 4 through the control terminal, so that the remote pressing plate standby module 4 controls the standby switch to be closed, the standby closing scheme of the pressing plate Y1 is further realized, and the remote standby control function of the pressing plate Y1 is realized.
The control terminal controls the operation of the remote platen standby module 4 in response to the control signal of the timer. When the timing duration of the timer is accumulated to 24 hours, the control terminal responds to the control signal of the timer to automatically control the remote pressing plate standby module 4 to operate, so that the automatic closing process of the standby switch is realized.
An indication module 5 connected with the remote pressing plate standby module 4 is arranged in the power distribution terminal, and the indication module 5 responds to an enabling signal of the remote pressing plate standby module 4 to operate. As one embodiment, the indication module 5 includes a light emitting diode L1, where an anode of the light emitting diode L1 is connected to the FPGA chip through a resistor R13, and a cathode of the light emitting diode L1 is grounded.
When the remote pressing plate standby module 4 is put into operation, the FPGA chip controls the light emitting diode L1 to light, the light emitting diode L1 is used for warning operation and maintenance personnel nearby the power distribution terminal, and the remote pressing plate standby module 4 is put into operation to prompt an operator to manually reset the pressing plate Y1 in time.
When the remote platen standby module 4 is put into operation, if the platen state detection module 1 detects that the platen Y1 is in a closed state, the platen state detection module 1 generates a platen closed state detection signal according to the closed state of the platen Y1 and sends the signal to the control terminal, and the control terminal responds to the platen closed state detection signal to control the remote platen standby module 4 to be disconnected.
When the remote platen standby module 4 is put into operation, if the operator manually resets the platen Y1 to close the platen Y1, the platen state detection module 1 can detect that the platen state is a closed state, and at this time, the control terminal controls the remote platen standby module 4 to be opened in response to the platen closed state detection signal of the platen state detection module 1. After the remote pressing plate standby module 4 is put into operation, when an operator manually resets the pressing plate Y1, the remote pressing plate standby module 4 can be automatically disconnected, and the automatic control function of the remote pressing plate standby module 4 is realized.
Be provided with remote control module in the distribution terminal, remote control module includes local remote control module 7 and remote control module 8, and when the circuit was in the state of breaking the floodgate outage, when the power transmission of need closing the floodgate again, operating personnel can be in the operation of local remote control module 7 of on-the-spot control, and the master station personnel can be through the operation of control terminal remote control module 8. Both the local remote control module 7 and the remote control module 8 can transmit power to the primary switch coil M.
The local remote control module 7 and the remote control module 8 supply power to the primary switch coil M, which is generally continuously supplied for 0.5-2 seconds, the primary switch coil M is instantaneously supplied with power, and after the primary switch coil M is closed, the circuit can be in a power-on state. After the circuit is electrified, the primary switch coil M is not electrified, and the primary switch coil M is electrified only when the switch is required to be opened or closed. In the drawings, only the primary switch coil M for switching off is included.
Through local remote control module 7 and remote control module 8, make FPGA submodule 11 control remote control module's high low level, when remote control module output high level, the electric current is carried outside primary switch coil M through clamp plate Y1, realizes primary switch coil M's power transmission process to accomplish primary switch coil M's separating brake, closing operation, and then can realize the break-make function of whole circuit.
The implementation principle of the pressing plate state detection system in the embodiment of the application is as follows: when operation and maintenance personnel carry out maintenance operation on site, the operation and maintenance personnel manually disconnect the remote control pressing plate Y1, at the moment, the state detection module detects the opening and closing state of the pressing plate Y1 in real time, and generates a pressing plate state detection signal according to the opening and closing state of the pressing plate Y1, and the pressing plate state detection module 1 sends the pressing plate state detection signal to the control terminal in real time, so that a master station personnel can know the opening and closing state of the pressing plate Y1 through the control terminal. When an operator performs maintenance operation nearby the power distribution terminal, the field condition detection module 2 detects and identifies the position of the operator, generates a field condition detection signal according to the field working condition of the operator and sends the field condition detection signal to the control terminal, so that a master station operator can know that the operator is in the vicinity of the power distribution terminal to perform maintenance operation through the control terminal, and further the master station operator can not perform closing operation on the disconnected pressing plate Y1 at the moment, so that remote master station operator misoperation is prevented from performing pressing plate Y1 closing operation to a certain extent, electric shock events are caused to the field operation and maintenance operator, and the safety of the operation process of the operator is improved.
The foregoing description of the preferred embodiments of the present application is not intended to limit the invention to the particular embodiments of the present application, but to limit the scope of the invention to the particular embodiments of the present application.
Claims (7)
1. The utility model provides a clamp plate state detecting system, sets up in distribution terminal, includes the clamp plate, its characterized in that still includes: the device comprises a pressing plate state detection module (1) and a field condition detection module (2), wherein the pressing plate state detection module (1) is connected with a pressing plate, and the pressing plate state detection module (1) generates a pressing plate state detection signal according to the opening and closing state of the pressing plate and sends the pressing plate state detection signal to a control terminal; the field condition detection module (2) generates a field condition detection signal according to the field working condition of an operator and sends the field condition detection signal to the control terminal;
the pressing plate state detection module (1) comprises an FPGA (field programmable gate array) sub-module (11), a pressing plate front detection sub-module (12) and a pressing plate rear detection sub-module (13), wherein the FPGA sub-module (11) comprises an FPGA chip, one end of the pressing plate front detection sub-module (12) is connected with the FPGA chip, the other end of the pressing plate front detection sub-module (12) is connected with one end of the pressing plate, one end of the pressing plate rear detection sub-module (13) is connected with the FPGA chip, and the other end of the pressing plate rear detection sub-module (13) is connected with the other end of the pressing plate;
the detection sub-module (12) before the pressing plate is used for detecting the on-off condition of a loop before the pressing plate, and the detection sub-module (12) before the pressing plate generates a detection signal before the pressing plate according to the on-off condition of the loop before the pressing plate and sends the detection signal to the FPGA sub-module (11);
the post-pressing detection sub-module (13) is used for detecting the on-off condition of a post-pressing loop, and the post-pressing detection sub-module (13) generates a post-pressing detection signal according to the on-off condition of the post-pressing loop and sends the post-pressing detection signal to the FPGA sub-module (11);
the FPGA sub-module (11) is used for analyzing and judging the opening and closing states of the pressing plate according to the front detection signal of the pressing plate and the rear detection signal of the pressing plate;
the pressing plate is connected with a passage detection module (6), the passage detection module (6) is used for detecting the energizing condition of the circuit, the passage detection module (6) generates a passage detection signal according to the energizing condition of the circuit and sends the passage detection signal to the control terminal, the passage detection module (6) comprises a primary switch coil, one end of the primary switch coil is connected with the pressing plate, and the other end of the primary switch coil is grounded; a broken wire input module (9) is arranged in the power distribution terminal, and the broken wire input module (9) is connected with the primary switch coil;
when the front detection sub-module (12) and the rear detection sub-module (13) of the pressing plate input low-level signals to the FPGA sub-module (11), the pressing plate is closed at the moment, and the primary switch coil normally operates; when the detection submodule (12) before the pressing plate inputs a high-level signal to the FPGA submodule (11), and the detection submodule (13) after the pressing plate inputs a low-level signal to the FPGA submodule (11), the pressing plate is disconnected at the moment, and the primary switch coil normally operates;
when the detection submodule (13) inputs a high-level signal to the FPGA submodule (11) after the pressing plate, the detection submodule (11) represents that the primary switch coil is in a disconnection state, and at the moment, the FPGA submodule (11) enables the disconnection input module (9) to output a high level; then, the FPGA sub-module (11) judges the states of the front detection sub-module (12) and the rear detection sub-module (13) of the pressing plate again and is used for judging the opening and closing states of the pressing plate;
when the detection submodule (12) before the pressing plate outputs low level to the FPGA submodule (11), the pressing plate is closed at the moment, and the primary switch coil is disconnected; when the detection submodule (12) before the pressing plate outputs high level to the FPGA submodule (11), the pressing plate is disconnected at the moment, and the primary switch coil is disconnected.
2. A platen condition detection system according to claim 1, wherein: the on-site condition detection module (2) comprises an infrared detection sub-module (3) arranged on the power distribution terminal, the infrared detection sub-module (3) is used for detecting whether an operator exists near the power distribution terminal in real time, and the infrared detection sub-module (3) generates an infrared detection signal according to the existence condition of the operator and sends the infrared detection signal to the control terminal.
3. A platen condition detection system according to claim 2, wherein: the power distribution terminal is internally provided with a timer connected with the infrared detection sub-module (3), the timer responds to the infrared detection signal sent by the infrared detection sub-module (3) to accumulate duration, and when the accumulated duration of the timer reaches a preset time threshold, the timer generates a timing control signal and sends the timing control signal to the control terminal.
4. A platen condition detection system according to claim 3, wherein: a remote pressing plate standby module (4) connected with the pressing plate in parallel is arranged in the power distribution terminal, and the remote pressing plate standby module (4) responds to a remote control signal of the control terminal to operate.
5. The platen condition detection system of claim 4, wherein: the control terminal responds to the control signal of the timer to control the operation of the remote pressing plate standby module (4).
6. The platen condition detection system of claim 4, wherein: an indication module (5) connected with the remote pressing plate standby module (4) is arranged in the power distribution terminal, and the indication module (5) responds to an enabling signal of the remote pressing plate standby module (4) to operate.
7. The platen condition detection system of claim 4, wherein: when the remote pressing plate standby module (4) is closed, if the pressing plate state detection module (1) detects that the pressing plate state is the closed state, the pressing plate state detection module (1) generates a pressing plate closed state detection signal according to the closed state of the pressing plate and sends the pressing plate closed state detection signal to the control terminal, and the control terminal responds to the pressing plate closed state detection signal to control the remote pressing plate standby module (4) to be opened.
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| CN104574806A (en) * | 2014-11-17 | 2015-04-29 | 国家电网公司 | Laser fence warning prompt method for remote operation of transformer substation |
| CN105449852A (en) * | 2015-11-19 | 2016-03-30 | 国网山东曲阜市供电公司 | Intelligent rural power grid 10kV line integrated measurement and control system based on wireless communication |
| CN107086664B (en) * | 2017-05-03 | 2019-08-23 | 国家电网公司 | A kind of substation exit pressing plate state monitoring apparatus and method |
| US10915084B2 (en) * | 2018-03-12 | 2021-02-09 | Rosemount Inc. | Field device switch monitor |
| CN110726931A (en) * | 2019-11-01 | 2020-01-24 | 北京小米移动软件有限公司 | On-off detection circuit of flash switch and electronic equipment |
| CN211321311U (en) * | 2020-02-28 | 2020-08-21 | 南京机电职业技术学院 | Safety switch with switching function |
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