CN115603265A - Security device applicable to Internet of things and online verification method thereof - Google Patents
Security device applicable to Internet of things and online verification method thereof Download PDFInfo
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- CN115603265A CN115603265A CN202211366747.XA CN202211366747A CN115603265A CN 115603265 A CN115603265 A CN 115603265A CN 202211366747 A CN202211366747 A CN 202211366747A CN 115603265 A CN115603265 A CN 115603265A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
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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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- 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
- H02J13/00006—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 information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—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 information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
- H02J13/00026—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 information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission involving a local wireless network, e.g. Wi-Fi, ZigBee or Bluetooth
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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
- H02J13/0004—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 involved in a protection system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/128—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment involving the use of Internet protocol
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a protector suitable for the Internet of things and an online checking method thereof, belonging to the technical field of emergency protection circuit devices, comprising a protector body comprising a current sensor and an electronic control switch, and characterized in that: two ends of the electronic control switch are connected in parallel with a through line, and a first switch is connected in series in the through line; the safety device is characterized by further comprising a controller and a management main station, wherein the management main station is in mutual wireless communication with the controller, the controller is in control connection with a current generator, the current generator provides detection current for the current sensor through a second switch, the detection current is adaptive to rated action current of the safety device body, the controller controls the on-off of the first switch and the second switch, the controller also detects the on-off state and the off response time of the electronic control switch, and whether the safety device body is qualified or not is judged according to detection information. The protector can automatically check whether the protector can reliably send out a cut-off signal under rated action current on the premise of not influencing the normal transmission of electric energy in a power transmission line.
Description
Technical Field
The invention belongs to the technical field of emergency protection circuit devices, and particularly relates to a protector suitable for the Internet of things and an online verification method thereof.
Background
The protector is also called leakage protector or leakage switch, it usually detects the zero sequence current in the line by the primary coil of the current transformer, the current in the line is the same under normal condition, the direction is opposite, the zero sequence current is almost zero, when the current leakage is caused by electric shock in the line, the balance will be destroyed, the induced current is in the secondary coil, and the control signal for automatically cutting off the power supply is sent out according to the induced current. Therefore, a security device is recognized as a useful protection device.
At present, the low-voltage line of the power grid is basically provided with a first-level leakage protector and a second-level leakage protector, so that a safe power utilization environment is provided for people, and meanwhile, the excessive trust of the people on the protectors is caused, so that the power utilization is safe as long as the protectors are installed. It is unknown that as the number of the used security devices increases, the potential uneasy factors increase, because the security devices can still reliably and quickly cut off the power after being used on the line for a period of time, thereby playing a real protection role. This requires periodic verification of installed security devices.
If the regular verification of all the protectors on the line is really realized, on one hand, the workload is very large; on the other hand, power failure verification is needed, and the normal requirements of users are influenced. For this reason, the chinese patent application 202010799390.9 proposes an uninterruptible residual current testing method, device and residual current protection device, in which a bypass connected in series with a bypass switch is connected in parallel to both ends of a residual current protection circuit breaker, a test control module determines whether there is a residual current test request signal, and when there is no request signal, the bypass switch is controlled to be switched on to perform a residual current simulation test, so that the residual current protection circuit breaker is tripped; after the residual current protection circuit breaker trips, the residual current protection circuit breaker is switched on; after the residual current protection circuit breaker is switched on, the bypass switch is controlled to be switched off, and the test of the residual current protection test is completed. The test method solves the problem of power failure caused by test tripping, and the technical essence of the test method is that the whole residual current protection circuit breaker is bypassed, and current is applied or generated to cause the residual current protection circuit breaker to trip. However, the magnitude of the operating current of the residual current protection circuit breaker cannot be judged, and whether the protection capability of the residual current protection circuit breaker is weakened or not cannot be judged, so that whether the residual current protection circuit breaker can reliably and quickly cut off the power supply or not cannot be determined.
Disclosure of Invention
The invention aims to solve the technical problem of providing a protector suitable for the Internet of things and an online checking method thereof, which can automatically check whether the protector can reliably send a cut-off signal under rated action current on the premise of not influencing the normal transmission of electric energy in a power transmission line.
In order to solve the technical problems, the technical scheme of the invention is as follows: an online verification method for a protector suitable for the Internet of things is designed, and is characterized in that: the method comprises the following steps:
(1) The management master station sends a checking instruction to the controller through a wireless signal;
(2) The controller sends out a control signal after receiving a check instruction of the management master station, and the two ends of the electronic control switch in the protector are connected by a straight-through line;
(3) The controller controls the current generator to generate a current signal, and applies the current signal to the current sensor of the protector in the step (2), wherein the current signal is adaptive to the rated action current of the protector;
(4) The controller detects whether the electronic control switch of the protector generates a disconnection signal in the step (3) and the response time of the disconnection signal, and judges whether the protector is qualified according to the detected signal to complete one-time verification;
(5) After the verification is completed in the step (4), the controller disconnects the through line, and the controller cuts off the connection between the current sensor and the current generator;
(6) And (4) after the verification is completed in the step (4), the controller also sends verification information to the management master station.
Preferably, in step (4), the controller records and stores the verification information.
Preferably, the verification information includes date, time, protector information, whether the relay is disconnected and corresponding time information of disconnection.
Preferably, the controller collects the current of a current sensor in the protector, then multiplies a given apparent voltage to obtain apparent power, and accumulates the apparent power in real time to obtain the apparent electric quantity.
The invention also provides a protector suitable for the Internet of things, which comprises a protector body, wherein the protector body comprises a current sensor and an electronic control switch, and the protector is characterized in that: two ends of the electronic control switch are connected in parallel with a through line, and a first switch is connected in series in the through line;
the safety device is characterized by further comprising a controller and a management main station, the management main station is in mutual wireless communication with the controller, the controller is in control connection with a current generator, the current generator provides detection current for the current sensor through a second switch, the detection current is adaptive to rated action current of the safety device body, the controller controls the on-off of the first switch and the second switch, the controller also detects the on-off state and off response time of the electronic control switch, and whether the safety device body is qualified or not is judged according to detection information.
Preferably, the controller receives a wireless verification instruction of the management master station, and the controller controls the on-off of the first switch and the second switch according to the wireless verification instruction.
Preferably, the intelligent management system further comprises a signal indicator, the signal indicator can display the on-off state of the electronic control switch, and the controller transmits a signal of the signal indicator back to the management master station.
Preferably, the system further comprises a management substation, wherein the management substation can be in wireless communication with the controller of the security device in the jurisdiction.
Preferably, the controller further comprises a current sampling circuit, the current sampling circuit collects current signals of the current sensor, the controller multiplies the current collected by the current sampling circuit by a given apparent voltage to obtain apparent power, and the apparent power is accumulated in real time to obtain the apparent electric quantity.
Preferably, the wireless signal is a WIFI signal, a bluetooth signal or a GPS signal.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention integrates the self-checking function on the basis of the existing protector, can complete the on-line self-checking according to the wireless checking instruction of the management master station, and the disconnection signal given by the protector does not influence the normal transmission of electric energy in the transmission line in the checking process, shares the huge verification task of the protector, realizes the unified on-line management of the protector, and further promotes the progress of the intelligent power grid.
2. Because the management substation is added between the management master station and the security device, the regional management of the security device is realized, and meanwhile, the hierarchical management of the security device is also realized, so that the flexibility and the convenience of the management are improved.
3. The controller can also obtain the accumulated apparent electric quantity according to the current of the current sensor in the protector, and can monitor the change condition of the micro-current in the power transmission line according to the variation of the apparent electric quantity, so that the hidden danger can be found as soon as possible, and the health state of the power grid can be guaranteed.
4. The invention can monitor the micro current with the energy damage in the line in real time, is convenient to judge the development situation of the energy damage, realizes the prior maintenance, ensures the safe transmission of electric power and is convenient to popularize and apply in the field.
Drawings
Fig. 1 is an electrical schematic of the present invention.
The mark in the figure is: 1. a protector body; 1-1, a current sensor; 1-2, an electronic control switch; 2. a through line; 3. a first switch; 4. a second switch; 5. a current generator; 6. a controller; 7. a management master station; 8. and managing the substations.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
The invention has the main idea that the self-checking of a security device is realized through an online checking method, so that the security device can be suitable for the management of the Internet of things, and the method specifically comprises the following steps:
(1) The management master station sends a checking instruction to the controller through a wireless signal;
(2) The controller sends out a control signal according to the received checking instruction, the electronic control switch in the protector is connected through the through line, and the electronic control switch bypasses the control line, so that the condition that the normal power transmission of the line is influenced by a disconnection signal sent out by the protector in the checking process is avoided, and the power failure-free checking is realized.
(3) The controller controls the current generator to generate a current signal, and applies the current signal to the current sensor of the protector in the step (2), wherein the current signal is adaptive to the rated action current of the protector;
(4) And (3) detecting whether the electronic control switch of the protector generates the disconnection signal or not and the response time of the disconnection signal by the controller, and if the electronic control switch of the protector sends out disconnection information within a specified time after the current is applied to the protector, verifying that the protector is qualified and determining that the verification is passed. For example, the rated off time of the protector is 0.01 second, and if the protector sends off information within 0.01 second after applying current, the protector is verified to be qualified. If the relay does not issue the open signal, or if the open signal is issued, the open response time exceeds 0.01 second, the protector does not pass this verification and needs to be further revised. Therefore, the controller judges that the protector is qualified according to the detected signal, and completes one-time verification. And in the process, the controller records and stores whether the electronic control switch is disconnected and corresponding time information of disconnection.
(5) And (4) after the verification is completed in the step (4), the controller firstly cuts off the current generator and then cuts off the through line, and the normal monitoring and protecting functions of the protector in the power transmission line are recovered. The controller also sends verification information to the management master station, wherein the verification information comprises date, time, protector information, whether the relay is disconnected and corresponding time information of disconnection, and the protector information comprises information such as installation position, serial number, rated action current and installation time.
In order to realize the daily monitoring of the micro-current in the power transmission line, the controller collects the current of a current sensor in the protector, then multiplies the current by a given apparent voltage to obtain apparent power, and accumulates the apparent power in real time to obtain the apparent electric quantity. Therefore, the change condition of the micro-current in the power transmission line can be monitored according to the change quantity of the apparent electric quantity, the hidden danger can be found as soon as possible, and the health state of a power grid is guaranteed. The given apparent voltage is a given voltage value, or an analog circuit capable of outputting a direct current voltage, and the specific signal form of the apparent voltage may be a digital signal or an analog signal, as long as the specific signal form is a fixed value, and no specific requirements are made on the specific given form and the signal form. It is the prior art that the determination of the change of the micro-current according to the change of the apparent electric quantity is specific, and detailed description is omitted here for the application of the chinese invention patent with application number 201911419129.5.
For convenience of description, the safety device in the prior art is called a safety device body 1, current sensors 1-1 for detecting current and electronic control switches 2 for giving off disconnection signals are arranged in the safety device body 1, then a self-checking function is added on the safety device body 1 to form the safety device suitable for unified management of the internet of things, as shown in fig. 1, two ends of the electronic control switches 2 are connected with through circuits 2 in parallel, so that the electronic control switches 2 and the through circuits 2 are in a mutual parallel relation, and first switches 3 are connected in series in the through circuits 2. The controller 6 controls and connects the current generator 5, the current generator 5 provides the detection current for the current sensor 1-1 through the second switch 4, the detection current is adaptive to the rated action current of the protector body 1, the controller 6 controls the on-off of the first switch 3 and the second switch 4, the controller 6 also detects the on-off state and the off response time of the electronic control switch 2 in the protector body 1, and judges whether the protector body 1 is qualified or not according to the detection information. The controller 6 can be in mutual wireless communication with the management main station 7, namely the management main station 7 sends a verification instruction to the controller 6 through a wireless signal, and the controller 6 sends verification information to the management main station 7, so that unified online management of the security device is realized.
In order to realize regional hierarchical management of the security device, the regional hierarchical management method is adaptive to the regional management mode in the power system, a plurality of management substations 8 are additionally arranged between the security device and the management master station 7, namely, the management substations 8 only have the management authority of the region to which the management substations belong, a verification instruction can be sent to the security device in the region through a wireless limited number, the regular or on-demand verification is realized, and the verification information is returned to the management substations 8 so that the management personnel in the region can know the verification condition of the security device in the region. The verification information can be sent to the management master station 7 together so as to know the verification signal of the security device in time. Of course, the management master station 7 can also send a verification command to a certain security device or some security devices or even all security devices in the platform to know or verify the current status of the security devices. A signal indicator capable of displaying the on-off state of the electronic control switch 2 is also arranged, and the controller 6 transmits the signal of the signal indicator back to the management main station 7. The controller 6 is also provided with a current sampling circuit which collects current signals of the current sensor 1-1 in the protector body 1, the controller 6 multiplies the current collected by the current sampling circuit by given apparent voltage to obtain apparent power, and the apparent power is accumulated in real time to obtain apparent electric quantity.
The wireless signals are WIFI, bluetooth signals or GPS signals, the wireless signals in the management platform can be one or the combination of more than two of the WIFI, bluetooth signals or GPS signals, and the management platform can be used for normal wireless communication.
The working process of the invention is as follows: the controller 6 controls the first switch 3 to be switched on according to a checking instruction sent by the management main station 7 or the management substation 8, and switches on two ends of the electronic control switch 2 by using the through line 2 to bypass the electronic control switch 2. Then the controller 6 controls the current generator 5 to generate a current which is adaptive to the rated action current of the protector body 1, and then the current is applied to the current sensor 1-1 through the second switch 4 to detect whether the electronic control switch 2 sends out a cut-off signal within a set time, if the cut-off signal is sent out within the set time, the protector body 1 passes the verification, and is determined to be qualified; if the disconnection signal is not sent or is sent after a specified time is exceeded, the verification is not passed and the test is determined to be unqualified. The controller 6 records and stores the check information, and may transmit it to the management master station 7 or the management slave station 8. After the verification is finished, the controller 6 firstly disconnects the second switch 4 and then disconnects the first switch 3, and the normal monitoring and protecting functions of the protector in the power transmission line are recovered.
When the daily earth leakage is protected, the controller 6 monitors the change condition of small current such as leakage current in the power transmission line, if the amplitude exceeds a certain value, the change condition is reported to the management main station 7, the reason for the phenomenon is detected, the maintenance is carried out in time, hidden danger factors are killed in the bud state, and the further development of the situation is prevented.
The online automatic checking function can be integrated into the existing protector body 1 to form an integrated novel protector; or a split structure can be adopted together with the protector body 1, and the two can only complete the checking function according to a fixed connection mode, which is within the scope of the thought. The electronic control switch 2 may be a relay that sends a switch control signal to the main line disconnecting link in the protector body 1, or may be an electronic switch that drives an ac contactor.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (10)
1. An online verification method for a protector applicable to the Internet of things is characterized by comprising the following steps: the method comprises the following steps:
(1) The management master station sends a check instruction to the controller through a wireless signal;
(2) The controller sends out a control signal after receiving a check instruction of the management master station, and the two ends of the electronic control switch in the protector are connected by a straight-through line;
(3) The controller controls the current generator to generate a current signal, and applies the current signal to the current sensor of the protector in the step (2), wherein the current signal is adaptive to the rated action current of the protector;
(4) The controller detects whether the electronic control switch of the protector generates a disconnection signal in the step (3) and the response time of the disconnection signal, and judges whether the protector is qualified according to the detected signal to complete one-time verification;
(5) After the verification is completed in the step (4), the controller disconnects the through line, and the controller cuts off the connection between the current sensor and the current generator;
(6) And (4) after the verification is completed in the step (4), the controller also sends verification information to the management master station.
2. The online verification method for the security device applicable to the internet of things according to claim 1, wherein: and (4) recording and storing the verification information by the controller.
3. The online verification method for the security device applicable to the internet of things according to claim 2, wherein: the verification information comprises date, time, protector information, whether the relay is disconnected and corresponding time information of disconnection.
4. The online verification method for the security guard applicable to the internet of things according to any one of claims 1 to 3, wherein: the controller collects the current of a current sensor in the protector, then the current is multiplied by the given apparent voltage to obtain apparent power, and the apparent power is accumulated in real time to obtain apparent electric quantity.
5. The utility model provides a security ware suitable for thing networking, includes the security ware body, and the security ware body includes current sensor and electronic control switch, its characterized in that: two ends of the electronic control switch are connected in parallel with a through line, and a first switch is connected in series in the through line;
the safety device is characterized by further comprising a controller and a management main station, wherein the management main station is in mutual wireless communication with the controller, the controller is in control connection with a current generator, the current generator provides detection current for the current sensor through a second switch, the detection current is adaptive to rated action current of the safety device body, the controller controls the on-off of the first switch and the second switch, the controller also detects the on-off state and the off response time of the electronic control switch, and whether the safety device body is qualified or not is judged according to detection information.
6. The security device for internet of things of claim 5, wherein: the controller receives a wireless verification instruction of the management master station, and controls the on-off of the first switch and the second switch according to the wireless verification instruction.
7. The security device for internet of things of claim 5, wherein: the intelligent management system also comprises a signal indicator, the signal indicator can display the on-off state of the electronic control switch, and the controller transmits the signal of the signal indicator back to the management main station.
8. The security guard applicable to the internet of things of claim 5, wherein: the system also comprises a management substation, and the management substation can be in wireless communication with the controller of the protector in the jurisdiction.
9. The security device for internet of things as claimed in any one of claims 5 to 8, wherein: the controller is also provided with a current sampling circuit, the current sampling circuit collects current signals of the current sensor, the controller multiplies the current collected by the current sampling circuit by given apparent voltage to obtain apparent power, and the apparent power is accumulated in real time to obtain apparent electric quantity.
10. The security device for internet of things of claim 9, wherein: the wireless signal is WIFI, a Bluetooth signal or a GPS signal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111308634.XA CN113740658A (en) | 2021-11-05 | 2021-11-05 | Security device applicable to Internet of things and online verification method thereof |
| CN202111308634X | 2021-11-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115603265A true CN115603265A (en) | 2023-01-13 |
Family
ID=78727519
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111308634.XA Pending CN113740658A (en) | 2021-11-05 | 2021-11-05 | Security device applicable to Internet of things and online verification method thereof |
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| CN102298104B (en) * | 2010-06-25 | 2016-01-13 | 上海宝钢工业检测公司 | A kind of method for detecting ground fault of bridge cable |
| CN107727982A (en) * | 2017-11-29 | 2018-02-23 | 国家电网公司 | It is a kind of to realize that the device and method for the experiment that do not have a power failure is protected in leakage by bypass circuit afterflow |
| CN110797834A (en) * | 2018-08-03 | 2020-02-14 | 淄博净能电子商务有限公司 | Relay protection device with self-detection function |
| CN110703161A (en) * | 2019-09-18 | 2020-01-17 | 国网江苏省电力有限公司淮安市洪泽区供电分公司 | Distribution lines fuse on-line monitoring system |
| CN110907856A (en) * | 2019-12-06 | 2020-03-24 | 国网江苏省电力有限公司南通供电分公司 | Power equipment electric leakage detection system based on magnetic field monitoring |
| CN111880083A (en) * | 2020-08-11 | 2020-11-03 | 常熟开关制造有限公司(原常熟开关厂） | Uninterrupted residual current test method and device and residual current protection device |
| CN112130063B (en) * | 2020-08-28 | 2024-04-12 | 许继集团有限公司 | Detection and protection method for mechanical switch theft jump of hybrid high-voltage direct-current breaker |
| CN111929614A (en) * | 2020-09-01 | 2020-11-13 | 中韶电气股份有限公司 | Device and method for realizing leakage protection full self-checking function |
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