CN110190585B - B-type residual current monitoring and action circuit breaker with wireless transmission function - Google Patents
B-type residual current monitoring and action circuit breaker with wireless transmission function Download PDFInfo
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- CN110190585B CN110190585B CN201910568265.4A CN201910568265A CN110190585B CN 110190585 B CN110190585 B CN 110190585B CN 201910568265 A CN201910568265 A CN 201910568265A CN 110190585 B CN110190585 B CN 110190585B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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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
- H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
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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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Abstract
The invention discloses a B-type residual current monitoring and action circuit breaker with a wireless transmission function, which comprises a circuit breaker and a leakage detection and execution module matched with the circuit breaker. The electric leakage detection and execution module comprises a power supply unit, a core processing unit, a leakage current detection unit, an LoRa wireless unit and a tripping control unit. The incoming line end of the circuit breaker is connected with the power supply unit, low-voltage direct current output by the power supply unit is respectively input into the core processing unit, the leakage current detection unit and the LoRa wireless unit, and the outgoing line end of the circuit breaker is connected with the tripping control unit. The B-type residual current monitoring and action circuit breaker with the wireless transmission function solves the problem of application occasion limitation caused by the lack of types of the existing commercial residual current action circuit breakers, perfects the data detection and transmission functions of the circuit breaker and adds a switching-on/off state detection circuit.
Description
Technical Field
The invention belongs to the technical field of residual current protectors, and particularly relates to a B-type residual current monitoring and action circuit breaker with a wireless transmission function.
Background
The residual current protector in China is developed from the middle of the 70 s and is firstly popularized and applied in rural low-voltage power networks, and a product series of the residual current protector which is complete in variety and specification and meets the international IEC standard is formed through continuous improvement and development from the 80 s to the 90 s. The method plays an important role in the safety protection of the low-voltage power grid, particularly the safety protection of the rural low-voltage power grid.
The common residual current classifications specified in GB/T22794, GB16916.1, GB16917.1 are type A, AC, B. The common type of the common residual current operated circuit breakers in the domestic market is A type or AC type, and B type is a great vacancy. The A type or the AC type only carries out action protection aiming at residual current components of alternating current or alternating current superposed pulsating direct current, and the B type also adds detection and protection to the residual current components of gentle direct current on the basis.
The common residual current operated circuit breakers in the market at present are only locally detected and protected basically, and do not have a data transmission function.
Disclosure of Invention
The invention overcomes the defects in the prior art, and provides a B-type residual current monitoring and action circuit breaker with a wireless transmission function.
The invention discloses a B-type residual current monitoring and action circuit breaker with a wireless transmission function, and mainly aims to solve the problem of application occasion limitation caused by the lack of types of the existing commercial residual current action circuit breakers. For example, a common breaker is often used only in an alternating current power utilization occasion, but the invention belongs to a type B breaker, and can be widely applied to direct current or alternating current and direct current hybrid application occasions, such as a direct current charging pile, direct current variable frequency electrical equipment, a photovoltaic direct current power generation system and the like.
The invention discloses a B-type residual current monitoring and action circuit breaker with a wireless transmission function, and the other purpose of the invention is to improve the data detection and transmission functions of the circuit breaker and solve the limitation that the existing residual current circuit breaker in the market can only carry out local detection. Through data acquisition and transmission, systematic monitoring and statistical analysis can be carried out on the electric leakage information of various application occasions at a cloud server. Even under the condition of tripping and power failure, long-term online monitoring can still be kept.
The invention discloses a B-type residual current monitoring and action circuit breaker with a wireless transmission function, and the other purpose of the invention is to add a switching-on/off state detection circuit, wherein an alternating current power supply input from a wire outlet end is rectified and then enters a feedback optocoupler, and finally enters a voltage stabilizing circuit to form a state loop. The outgoing line end is the combined floodgate state when having the electricity, and opto-coupler output one kind of state this moment, and after the tripping operation, the outgoing line end outage, opto-coupler output another kind of state this moment. The opening and closing state information is transmitted to the core processing unit, so that the opening and closing state of the switch can be monitored online for a long time.
The invention adopts the following technical scheme that the B-type residual current monitoring and action circuit breaker with the wireless transmission function comprises a circuit breaker and an electric leakage detection and execution module matched with the circuit breaker, wherein:
electric leakage detection and execution module includes power supply unit, core processing unit, leakage current detection unit, loRa wireless unit and dropout the control unit, wherein:
the incoming line end of the circuit breaker is connected with the power supply unit, the low-voltage direct current output by the power supply unit is respectively input into the core processing unit, the leakage current detection unit and the LoRa wireless unit, the outgoing line end of the circuit breaker is connected with the tripping control unit, the core processing unit is mutually independent, connected with the LoRa wireless unit, the leakage current detection unit and the tripping control unit and establishes data connection, and therefore data interaction and action control are achieved.
According to the above technical solution, as a further preferable technical solution of the above technical solution, the trip control unit includes a rectifying circuit, an optical coupler isolation circuit, and a voltage stabilizing circuit, wherein:
alternating current from an outlet end of the circuit breaker sequentially passes through the rectifying circuit, the optical coupling isolation circuit and the voltage stabilizing circuit to form opening and closing state information, the opening and closing state information is further input into the core processing unit, and the state loop comprises a closing state and an opening state.
According to the above technical solution, as a further preferable technical solution of the above technical solution, the trip control unit further includes an opening and closing state detection circuit, and the opening and closing state detection circuit is dedicated to detecting and forming opening and closing state information.
According to the above technical solution, as a further preferred technical solution of the above technical solution, the LoRa wireless unit further uploads the data to the base station and the cloud server in a wireless manner, and the LoRa wireless unit simultaneously obtains the instruction issued by the base station and the cloud server in a wireless manner.
According to the above technical solution, as a further preferable technical solution of the above technical solution, when the leakage information exceeds a preset standard line, the core processing unit controls the trip control unit to operate the corresponding trip mechanism, thereby disconnecting the circuit breaker.
The invention also discloses a B-type residual current monitoring and action circuit breaker with a wireless transmission function, which is used for matching with a circuit breaker, wherein the circuit breaker is provided with an incoming line end and an outgoing line end, and the B-type residual current monitoring and action circuit breaker with the wireless transmission function comprises an electric leakage detection and execution module matched with the circuit breaker, wherein:
electric leakage detection and execution module includes power supply unit, core processing unit, leakage current detection unit, loRa wireless unit and dropout the control unit, wherein:
the incoming line end of the circuit breaker is connected with the power supply unit, the low-voltage direct current output by the power supply unit is respectively input into the core processing unit, the leakage current detection unit and the LoRa wireless unit, the outgoing line end of the circuit breaker is connected with the tripping control unit, the core processing unit is mutually independent, connected with the LoRa wireless unit, the leakage current detection unit and the tripping control unit and establishes data connection, and therefore data interaction and action control are achieved.
According to the above technical solution, as a further preferable technical solution of the above technical solution, the trip control unit includes a rectifying circuit, an optical coupler isolation circuit, and a voltage stabilizing circuit, wherein:
alternating current from an outlet end of the circuit breaker sequentially passes through the rectifying circuit, the optical coupling isolation circuit and the voltage stabilizing circuit to form opening and closing state information, the opening and closing state information is further input into the core processing unit, and the state loop comprises a closing state and an opening state.
According to the above technical solution, as a further preferable technical solution of the above technical solution, the trip control unit further includes an opening and closing state detection circuit, and the opening and closing state detection circuit is dedicated to detecting and forming opening and closing state information.
According to the above technical solution, as a further preferred technical solution of the above technical solution, the LoRa wireless unit further uploads the data to the base station and the cloud server in a wireless manner, and the LoRa wireless unit simultaneously obtains the instruction issued by the base station and the cloud server in a wireless manner.
According to the above technical solution, as a further preferable technical solution of the above technical solution, when the leakage information exceeds a preset standard line, the core processing unit controls the trip control unit to operate the corresponding trip mechanism, thereby disconnecting the circuit breaker.
The B-type residual current monitoring and action circuit breaker with the wireless transmission function has the advantages of solving the problem of application occasion limitation caused by the lack of types of the existing commercial residual current action circuit breakers, perfecting the data detection and transmission functions of the circuit breaker and adding a switching-on/off state detection circuit.
Drawings
Fig. 1 is an overall structural block diagram of one embodiment of the present invention.
Fig. 2 is a block diagram of internal functional modules of the leakage detecting and executing module according to the above embodiment of the present invention.
Fig. 3 is a block diagram of an internal power-taking method of the leakage detecting and executing module according to the above embodiment of the present invention.
Fig. 4 is a schematic diagram of the feedback of the opening/closing state of the leakage detecting and executing module according to the above embodiment of the present invention.
The reference numerals include: 1-a power supply unit; 2-a core processing unit; 3-leakage current detection unit (AC/DC compatible); 4-LoRa radio; 5, tripping a control unit; 51-a rectifying circuit; 52-optical coupling isolation circuit; 53-voltage stabilizing circuit; 54-switching on/off state detection circuit; 100-a circuit breaker; 200-leakage detection and execution module.
Detailed Description
The invention discloses a B-type residual current monitoring and action circuit breaker with a wireless transmission function, and the specific implementation mode of the invention is further described in combination with the preferred embodiment.
Referring to fig. 1 to 4 of the drawings, fig. 1 shows an overall structure of a B-type residual current monitoring and operating circuit breaker with a wireless transmission function, fig. 2 shows an internal structure of a leakage detection and execution module of the B-type residual current monitoring and operating circuit breaker with a wireless transmission function, and fig. 3 shows switching-on and switching-off state feedback of the leakage detection and execution module of the B-type residual current monitoring and operating circuit breaker with a wireless transmission function.
Preferred embodiments.
Referring to fig. 1 of the drawings, the B-type residual current monitoring and action circuit breaker with wireless transmission function preferably comprises a circuit breaker 100 and an electric leakage detecting and executing module 200 matched with the circuit breaker 100, wherein:
referring to fig. 2 of the drawings, the leakage detecting and executing module 200 includes a power supply unit 1, a core processing unit 2, a leakage current detecting unit 3, a LoRa wireless unit 4, and a trip control unit 5, wherein:
referring to fig. 2 and 3 of the drawings, an incoming line end of the circuit breaker 100 is connected to a power supply unit 1 (in other words, the power supply unit 1 takes power from the incoming line end of the circuit breaker 100), low-voltage direct current output by the power supply unit 1 is respectively input into a core processing unit 2, a leakage current detection unit (ac/dc compatible) 3 and a LoRa wireless unit 4, an outgoing line end of the circuit breaker 100 is connected to a trip control unit 5 (in other words, the trip control unit 5 takes power from the outgoing line end of the circuit breaker 100), and the core processing unit 2 is independently connected to the LoRa wireless unit 4, the leakage current detection unit 3 and the trip control unit 5 and establishes data connection to realize data interaction and action control.
Further, referring to fig. 4 of the drawings, the trip control unit 5 includes a rectifying circuit 51, an optical coupling isolation circuit 52 and a voltage stabilizing circuit 53, wherein:
alternating current from an outlet end of the circuit breaker 100 sequentially passes through the rectifying circuit 51, the optocoupler isolation circuit 52 and the voltage stabilizing circuit 53 to form on-off state information, the on-off state information is further input into the core processing unit 2, and the state loop comprises a switching-on state and a switching-off state (the outlet end of the circuit breaker 100 is in the switching-on state when electrified, the optocoupler outputs one state at the moment, after tripping, the outlet end is powered off, and the optocoupler outputs the other state at the moment.
Further, referring to fig. 4 of the drawings, as a modified implementation of the above preferred embodiment, the trip control unit 5 further includes a switching-on/off state detection circuit 54, and the switching-on/off state detection circuit 54 is dedicated to detecting and forming switching-on/off state information.
Further, the LoRa wireless unit 4 further uploads the data to the base station and the cloud server in a wireless manner, and the LoRa wireless unit 4 simultaneously obtains the instruction issued by the base station and the cloud server in a wireless manner.
Further, when the leakage information exceeds a preset standard line, the core processing unit 2 controls the trip control unit 5 to operate a corresponding trip mechanism (not shown in the figure), so as to open the circuit breaker.
A first embodiment.
Referring to fig. 1 of the drawings, the B-type residual current monitoring and action circuit breaker with wireless transmission function is preferably used for matching with a (common) circuit breaker 100, the circuit breaker 100 is provided with an incoming line end and an outgoing line end, and the B-type residual current monitoring and action circuit breaker with wireless transmission function comprises an electric leakage detection and execution module 200 matched with the circuit breaker 100, wherein:
referring to fig. 2 of the drawings, the leakage detecting and executing module 200 includes a power supply unit 1, a core processing unit 2, a leakage current detecting unit 3, an LoRa wireless unit 4, and a trip control unit 5, wherein:
referring to fig. 2 and 3 of the drawings, an incoming line end of the circuit breaker 100 is connected to a power supply unit 1 (in other words, the power supply unit 1 takes power from the incoming line end of the circuit breaker 100), low-voltage direct current output by the power supply unit 1 is respectively input into a core processing unit 2, a leakage current detection unit (ac/dc compatible) 3 and a LoRa wireless unit 4, an outgoing line end of the circuit breaker 100 is connected to a trip control unit 5 (in other words, the trip control unit 5 takes power from the outgoing line end of the circuit breaker 100), and the core processing unit 2 is independently connected to the LoRa wireless unit 4, the leakage current detection unit 3 and the trip control unit 5 and establishes data connection to realize data interaction and action control.
Further, referring to fig. 4 of the drawings, the trip control unit 5 includes a rectifying circuit 51, an optical coupling isolation circuit 52 and a voltage stabilizing circuit 53, wherein:
alternating current from an outlet end of the circuit breaker 100 sequentially passes through the rectifying circuit 51, the optical coupling isolation circuit 52 and the voltage stabilizing circuit 53 to form switching-on/switching-off state information, the switching-on/switching-off state information is further input into the core processing unit 2, the switching-on/switching-off state information comprises a switching-on state and a switching-off state (the switching-on state is the switching-on state when the outlet end of the circuit breaker 100 is electrified, the optical coupling outputs one state at the moment, after tripping is carried out, the outlet end is powered off, the optical coupling outputs the other state at the moment, the switching-on/switching-off state information is transmitted into the core processing unit 2, and therefore the switching-on/switching-off state of the switch can be monitored online for a long time.
Further, referring to fig. 4 of the drawings, as a modified implementation of the above preferred embodiment, the trip control unit 5 further includes a switching-on/off state detection circuit 54, and the switching-on/off state detection circuit 54 is dedicated to detecting and forming switching-on/off state information.
Further, the LoRa wireless unit 4 further uploads the data to the base station and the cloud server in a wireless manner, and the LoRa wireless unit 4 simultaneously obtains the instruction issued by the base station and the cloud server in a wireless manner.
Further, when the leakage information exceeds a preset standard line, the core processing unit 2 controls the trip control unit 5 to operate a corresponding trip mechanism (not shown in the figure), so as to open the circuit breaker.
According to the preferred embodiment and the first embodiment, the invention discloses a B-type residual current monitoring and action circuit breaker with wireless transmission function, and the working principle thereof is explained as follows.
Generally, terminals of a circuit breaker (residual current operated circuit breaker) are divided into a line inlet terminal and a line outlet terminal. The leakage detecting and executing module 200 of the present invention is powered from the line inlet of the circuit breaker 100 to the power supply unit 1, and outputs a stable low-voltage dc power through the power supply unit 1 to the core processing unit 2, the leakage current detecting (ac/dc compatible) unit 3, and the LoRa wireless unit 4. The circuit breaker is powered from the outlet end of the circuit breaker, connected into the tripping control unit 5 and used for providing power for the tripping control unit 5. The core processing unit 2 is responsible for data interaction with the leakage current detection unit 3, and the leakage current detection unit 3 detects the leakage current on the line and feeds back the data to the core processing unit 2. The core processing unit 2 processes the data and then transmits the data to the LoRa wireless unit 4. The LoRa wireless unit 4 further wirelessly uploads the data to the base station and the cloud server. When the leakage information exceeds the standard line, the core processing unit 2 controls the tripping control unit 5, so that a corresponding tripping mechanism (not shown in the figure) acts, the breaker is disconnected, and personal safety is protected. In conclusion, the leakage current and other information can be monitored on line for a long time, and the monitoring state can still be kept even after tripping is executed.
It is worth mentioning that the alternating current electricity taking mode of the invention is different from the existing residual current operated circuit breaker, the traditional residual current operated circuit breaker generally only takes electricity from the wire outlet end of the circuit breaker to supply power to the detection and tripping control circuit, and after the leakage is detected and the tripping is executed, the wire outlet end is powered off, so that the internal circuit of the circuit breaker does not work any more, and the circuit breaker can detect again only after the manual switching-on again, and therefore, the circuit breaker does not have the function of data transmission. The power-taking mode of the invention adopts two groups of alternating current inputs, and the alternating current input in the power supply unit 1 is taken from the wire inlet end, so that the power supply unit 1 still works after tripping is executed, and the power supply is supplied to the core processing unit 2, the leakage current detection unit 3 and the LoRa wireless unit 4. The ac input in the trip control unit 5 is taken from the outlet terminal, so that the ac in the trip control unit 5 can be cut off instantly after tripping is performed, so as to protect the trip mechanism.
In addition, the on-off state feedback of the invention is different from the function of the traditional residual current operated circuit breaker. Because the power supply unit 1 is powered by the incoming line end, the core processing unit 2, the electric leakage detection unit 3 and the LoRa wireless unit 4 still have electricity after tripping is executed, and long-term online data processing transmission is ensured. Therefore, the present invention adds the switching state detection circuit 54 to the trip control unit 5. An alternating current power supply input from the wire outlet end is rectified and then enters a feedback optocoupler, and finally enters the voltage stabilizing circuit to form a state loop. The outgoing line end is the combined floodgate state when having the electricity, and opto-coupler output one kind of state this moment, and after the tripping operation, the outgoing line end outage, opto-coupler output another kind of state this moment. The opening and closing state information is transmitted to the core processing unit 2, so that the opening and closing state of the switch can be monitored online for a long time.
It will be apparent to those skilled in the art that modifications and equivalents may be made in the embodiments and/or portions thereof without departing from the spirit and scope of the present invention.
Claims (4)
1. The utility model provides a B type residual current monitoring and action circuit breaker with wireless transmission function, its characterized in that, including the circuit breaker with circuit breaker complex electric leakage detection and execution module, wherein:
electric leakage detection and execution module includes power supply unit, core processing unit, leakage current detection unit, loRa wireless unit and dropout the control unit, wherein:
the circuit breaker is characterized in that the wire inlet end of the circuit breaker is connected with a power supply unit, low-voltage direct current output by the power supply unit is respectively input into a core processing unit, a leakage current detection unit and a LoRa wireless unit, the wire outlet end of the circuit breaker is connected with a tripping control unit, the core processing unit is mutually independently connected with the LoRa wireless unit, the leakage current detection unit and the tripping control unit and establishes data connection, and therefore data interaction and action control are achieved;
the B-type residual current monitoring and action circuit breaker with the wireless transmission function adopts two groups of alternating current inputs, the alternating current inputs in the power supply unit take the electricity from an incoming line end, the power supply unit is used for ensuring that the power supply unit still works after tripping is executed and supplying power to the core processing unit, the leakage current detection unit and the LoRa wireless unit, and the alternating current inputs in the tripping control unit take the electricity from an outgoing line end and are used for instantly cutting off the alternating current in the tripping control unit after tripping is executed, so that the tripping mechanism is protected;
the trip control unit comprises a rectification circuit, an optical coupling isolation circuit and a voltage stabilizing circuit, wherein:
alternating current from an outlet end of the circuit breaker sequentially passes through the rectifying circuit, the optical coupling isolation circuit and the voltage stabilizing circuit to form opening and closing state information, the opening and closing state information is further input into the core processing unit, and a state loop comprises a closing state and an opening state;
the tripping control unit also comprises an opening and closing state detection circuit, and the opening and closing state detection circuit is specially used for detecting and forming opening and closing state information;
an alternating current power supply input from a wire outlet end of the circuit breaker is rectified and then enters a feedback optocoupler to finally form a state loop in a voltage stabilizing circuit, the wire outlet end is in a closing state when electrified, the optocoupler outputs one state at the moment, the wire outlet end is powered off after tripping, the optocoupler outputs the other state at the moment, and the opening and closing state information is transmitted to a core processing unit and is used for monitoring the opening and closing state of the switch on line for a long time;
the LoRa wireless unit further uploads data to the base station and the cloud server in a wireless mode, and the LoRa wireless unit simultaneously obtains instructions issued by the base station and the cloud server in a wireless mode;
the leakage detection and execution module is used for accessing a power supply unit from the inlet end of the circuit breaker, outputting stable low-voltage direct current to a core processing unit, a leakage current detection unit and a LoRa wireless unit through the power supply unit, accessing a tripping control unit from the outlet end of the circuit breaker and providing power for the tripping control unit, wherein the core processing unit is responsible for carrying out data interaction with the leakage current detection unit, the leakage detection unit detects the leakage on a circuit and feeds back data to the core processing unit, the core processing unit processes the data and then transmits the data to the LoRa wireless unit, the LoRa wireless unit further wirelessly uploads the data to a base station and a cloud server, and when the leakage information exceeds a standard line, the core processing unit controls the tripping control unit to enable a corresponding tripping mechanism to act, so that the circuit breaker is disconnected, the leakage current information can be monitored online for a long time, and the monitoring state can be still kept even after tripping is executed.
2. The type-B residual current monitoring and actuating circuit breaker with wireless transmission function of claim 1, wherein the core processing unit controls the trip control unit to operate the corresponding trip mechanism to open the circuit breaker when the leakage information exceeds a preset standard line.
3. The utility model provides a B type residual current monitoring and action circuit breaker with wireless transmission function for match the circuit breaker, above-mentioned circuit breaker are equipped with inlet wire end and leading-out terminal, a serial communication port, B type residual current monitoring and action circuit breaker with wireless transmission function include with circuit breaker complex electric leakage detection and execution module, wherein:
the electric leakage detection and execution module comprises a power supply unit, a core processing unit, a leakage current detection unit, a LoRa wireless unit and a tripping control unit, wherein:
the circuit breaker comprises a core processing unit, a leakage current detection unit, a tripping control unit, a power supply unit, a core processing unit, a leakage current detection unit, a tripping control unit and a power supply unit, wherein the power supply unit is connected with the core processing unit;
the B-type residual current monitoring and action circuit breaker power-taking mode with the wireless transmission function adopts two groups of alternating current inputs, the alternating current inputs in the power supply unit take power from a wire inlet end, the power supply unit is used for ensuring that the power supply unit still works after tripping is executed and supplying power to the core processing unit, the leakage current detection unit and the LoRa wireless unit, and the alternating current inputs in the tripping control unit take power from a wire outlet end and are used for instantly cutting off the alternating current in the tripping control unit after tripping is executed, so that the tripping mechanism is protected;
the trip control unit comprises a rectification circuit, an optical coupling isolation circuit and a voltage stabilizing circuit, wherein:
alternating current from an outlet end of the circuit breaker sequentially passes through the rectifying circuit, the optical coupling isolation circuit and the voltage stabilizing circuit to form opening and closing state information, the opening and closing state information is further input into the core processing unit, and a state loop comprises a closing state and an opening state;
the tripping control unit also comprises an opening and closing state detection circuit, and the opening and closing state detection circuit is specially used for detecting and forming opening and closing state information;
an alternating current power supply input from a wire outlet end of the circuit breaker is rectified and then enters a feedback optocoupler to finally form a state loop in a voltage stabilizing circuit, the wire outlet end is in a closing state when electrified, the optocoupler outputs one state at the moment, the wire outlet end is powered off after tripping, the optocoupler outputs the other state at the moment, and the opening and closing state information is transmitted to a core processing unit and is used for monitoring the opening and closing state of the switch on line for a long time;
the LoRa wireless unit further uploads data to the base station and the cloud server in a wireless mode, and the LoRa wireless unit simultaneously obtains instructions issued by the base station and the cloud server in a wireless mode;
the leakage detection and execution module is used for accessing a power supply unit from the wire inlet end of the circuit breaker, outputting stable low-voltage direct current to a core processing unit, a leakage current detection unit and a LoRa wireless unit through the power supply unit, accessing a tripping control unit from the wire outlet end of the circuit breaker, providing power for the tripping control unit, enabling the core processing unit to perform data interaction with the leakage current detection unit, detecting leakage on a circuit by the leakage detection unit, feeding data back to the core processing unit, processing the data by the core processing unit, transmitting the data to the LoRa wireless unit, further wirelessly transmitting the data to a base station and a cloud server by the LoRa wireless unit, and controlling the tripping control unit when leakage information exceeds a standard wire by the core processing unit to enable a corresponding tripping mechanism to act so as to disconnect the circuit breaker, the leakage current information can be monitored online for a long time, and the monitoring state can be still kept even after tripping is executed.
4. The type-B residual current monitoring and action circuit breaker with wireless transmission function according to claim 3, wherein the core processing unit controls the trip control unit to operate the corresponding trip mechanism to open the circuit breaker when the leakage information exceeds a preset standard line.
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| CN110635447B (en) * | 2019-09-29 | 2022-01-28 | 浙江巨磁智能技术有限公司 | Tripping control unit, electric leakage module and safe direct current Internet of things protection switch |
| CN113507097A (en) * | 2021-08-05 | 2021-10-15 | 上海大学 | Solid-state action circuit breaker with electric energy quality monitoring function |
| CN114034994A (en) * | 2021-11-05 | 2022-02-11 | 国网江苏省电力有限公司检修分公司 | Insulation monitoring system and method for power utilization system of transformer substation |
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| CN103474948A (en) * | 2013-09-26 | 2013-12-25 | 无锡智卓电气有限公司 | Component, device and method for determining breaker switching on-off signal generation |
| CN109901065A (en) * | 2019-04-08 | 2019-06-18 | 国网福建省电力有限公司 | A kind of Aftercurrent protection circuit breaker |
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| CN110190585A (en) | 2019-08-30 |
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