Control method of electromagnetic lock system and electromagnetic lock system

Abstract

The embodiment of the invention provides a control method of an electromagnetic lock system and the electromagnetic lock system. The control method comprises the steps that the on-off state of a relay in an energy storage device is acquired, and the energy storage device is loaded on a high-voltage switch cabinet; based on the on-off state of the relay, an electromagnetic lock arranged on the high-voltage switch cabinet is controlled to be opened or closed. According to the technical scheme, the safety and reliability of the high-voltage switch cabinet can be improved, safety accidents are avoided, and safe operation of a power supply system is ensured.

Description

Control method of electromagnetic lock system and electromagnetic lock system Technical Field

[0001] The present application relates to the field of electric power technology, and in particular to a control method for an electromagnetic lock system and an electromagnetic lock system. Background Art

[0002] High-voltage switchgear plays the role of switching, controlling or protecting in the power generation, transmission, distribution, power conversion and consumption of the power system.

[0003] With the continuous development of society, users have increasingly higher requirements for the operational reliability and safety reliability of switchgear such as high-voltage switchgear. In particular, accidents in which operators and maintenance personnel mistakenly enter live compartments are increasingly occurring. Therefore, how to improve the safety and reliability of high-voltage switchgear, avoid the occurrence of safety accidents, and ensure the safe operation of the power system is currently an issue that needs to be solved urgently.

[0004] Summary of the Invention

[0005] The embodiments of the present application provide a control method for an electromagnetic lock system and an electromagnetic lock system, which can improve the safety and reliability of high-voltage switchgear, avoid the occurrence of safety accidents, and ensure the safe operation of the power system.

[0006] In a first aspect, a control method for an electromagnetic lock system is provided, the control method comprising: obtaining the switching state of a relay in an energy storage device, wherein the energy storage device is loaded on a high-voltage switch cabinet; and controlling the electromagnetic lock provided on the high-voltage switch cabinet to be opened or closed based on the switching state of the relay.

[0007] The control method of the electromagnetic lock system provided in the embodiment of the present application can control the on / off state of the electromagnetic lock, thereby realizing the control of the on / off state of the high-voltage switch cabinet. Specifically, the energy storage device is installed in the high-voltage switch cabinet, and the on / off state of the relay in the energy storage device is obtained. Based on the on / off state of the relay, the on / off state of the electromagnetic lock provided on the high-voltage switch cabinet is controlled. In other words, based on the on / off state of the relay, it is possible to determine whether the energy storage device is energized, thereby controlling the on / off state of the electromagnetic lock to realize the control of the opening or closing of the high-voltage switch cabinet, thereby preventing maintenance personnel from accidentally entering the high-voltage switch cabinet when the energy storage device is energized, thereby avoiding the occurrence of safety accidents.

[0008] In a possible implementation, acquiring the switching state of a relay in the energy storage device includes: acquiring the switching state of the relay from a submodule controller of the energy storage device.

[0009] The submodule controller of the energy storage device can obtain the switching state of the relay in the energy storage device, obtain the switching state of the relay from the submodule controller, and control the electromagnetic lock to open or close based on the switching state of the relay.

[0010] In a possible implementation, the control method further includes: obtaining the power-on state of the high-voltage switch cabinet; and controlling the electromagnetic lock provided on the high-voltage switch cabinet to open or close includes: controlling the electromagnetic lock to open or close based on the switch state of the relay and the power-on state of the high-voltage switch cabinet.

[0011] It not only obtains the switching status of the relay, but also the energized status of the high-voltage switchgear. Based on the switching status of the relay and the energized status of the high-voltage switchgear, it controls the opening or closing of the electromagnetic lock, thus preventing maintenance personnel from accidentally entering the high-voltage switchgear when the energy storage device is energized or the high-voltage switchgear is energized, thereby avoiding the occurrence of safety accidents.

[0012] In one possible implementation, obtaining the energized state of the high-voltage switchgear includes: obtaining the first current of the high-voltage switchgear from the current input side of the high-voltage switchgear; controlling the electromagnetic lock provided on the high-voltage switchgear to open or close includes: controlling the electromagnetic lock to open or close based on the switching state of the relay and the first current.

[0013] The system obtains a first current from the high-voltage switchgear from its current input side and uses this first current to determine whether the high-voltage switchgear is energized. In other words, the electromagnetic lock is controlled to open or close based on the relay's on / off state and the first current, preventing maintenance personnel from accidentally entering the high-voltage switchgear while the energy storage device or the high-voltage switchgear is energized, thus avoiding safety accidents.

[0014] In one possible implementation, obtaining the energized state of the high-voltage switchgear includes: obtaining the second current of the high-voltage switchgear from the current output side of the high-voltage switchgear; controlling the electromagnetic lock provided on the high-voltage switchgear to open or close includes: controlling the electromagnetic lock to open or close based on the switching state of the relay, the first current and the second current.

[0015] The system not only obtains the first current of the high-voltage switchgear from its current input side, but also obtains the second current from its current output side. The first and second currents are used to determine whether the high-voltage switchgear is energized, thereby improving the accuracy of the determination of the energized state of the high-voltage switchgear. In other words, the electromagnetic lock is controlled to open or close based on the switching state of the relay, the first current, and the second current, preventing maintenance personnel from accidentally entering the high-voltage switchgear while it is energized, thereby avoiding safety accidents.

[0016] In a possible implementation, the control method further includes: controlling an indicator light of a power indication device to light up or turn off based on the switch state of the relay and the power state of the high-voltage switchgear.

[0017] Based on the switching state of the relay and the energized state of the high-voltage switchgear, the indicator light of the energized indication device is controlled to light up or go out, so that maintenance personnel can quickly and easily know the switching state of the relay and the energized state of the high-voltage switchgear by lighting up or going out the indicator light, and then judge whether they can enter the high-voltage switchgear for maintenance work.

[0018] In a second aspect, an electromagnetic lock system is provided, comprising: an electromagnetic lock and a control module, wherein the electromagnetic lock is arranged on a high-voltage switch cabinet and is used to control the switch state of the high-voltage switch cabinet, and the high-voltage switch cabinet is used to load an energy storage device; the control module is communicatively connected to the energy storage device, and the control module is used to obtain status information of the relay in the energy storage device.

[0019] The electromagnetic lock system provided in an embodiment of the present application includes an electromagnetic lock and a control module. The control module is communicated with an energy storage device and obtains status information of a relay in the energy storage device. The electromagnetic lock controls the switch status of a high-voltage switchgear equipped with the energy storage device to prevent maintenance personnel from accidentally entering the high-voltage switchgear when the energy storage device is energized, thereby avoiding the occurrence of safety accidents.

[0020] In a possible implementation, the energy storage device includes a submodule controller, the control module is communicatively connected to the submodule controller, and the control module is configured to obtain status information of the relay from the submodule controller.

[0021] The control module is in communication with the submodule controller of the energy storage device, thereby obtaining status information of the relay from the submodule controller.

[0022] In a possible implementation, a first current sensor is provided on the current input side of the high-voltage switchgear. The first current sensor is used to obtain first current information of the high-voltage switchgear and send the first current information to the control module.

[0023] A first current sensor is set on the current input side of the high-voltage switch cabinet to obtain first current information of the high-voltage switch cabinet and send it to the control module of the electromagnetic lock system so that the control module obtains the first current information of the high-voltage switch cabinet.

[0024] In a possible implementation, a second current sensor is provided on the current output side of the high-voltage switchgear, and the second current sensor is used to obtain second current information of the high-voltage switchgear and send the second current information to the control module.

[0025] A second current sensor is set on the current output side of the high-voltage switch cabinet to obtain second current information of the high-voltage switch cabinet and send it to the control module of the electromagnetic lock system so that the control module obtains the second current information of the high-voltage switch cabinet.

[0026] In a possible implementation, the electromagnetic lock system further includes a charge display device, and the charge display device is connected in parallel with the pull-in coil of the electromagnetic lock.

[0027] The charged display device is connected in parallel with the pull-in coil of the electromagnetic lock, so that the energized states of the charged display device and the pull-in coil of the electromagnetic lock in the control circuit of the electromagnetic lock system can be independent of each other.

[0028] In one possible implementation, the electromagnetic lock system also includes a first power supply and a second power supply connected in parallel, and the first power supply and the second power supply are respectively connected in series with the attraction coil of the electromagnetic lock and the powered display device, and the first power supply is used to provide power to the electromagnetic lock system, and the second power supply is used to provide power to the electromagnetic lock system when the first power supply cannot provide power.

[0029] A first power supply and a second power supply connected in parallel are provided to provide power to the electromagnetic lock system. When the first power supply fails to provide power, the second power supply provides power to the electromagnetic lock system to ensure normal operation of the electromagnetic lock system.

[0030] In a possible implementation, the electromagnetic lock system further includes a fuse, which is connected in series with the pull-in coil of the electromagnetic lock to prevent the electromagnetic lock from being damaged when the system current is too high.

[0031] In a third aspect, a control device for an electromagnetic lock system is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call the computer program so that the control device implements the control method described in the first aspect or any possible implementation of the first aspect.

[0032] In a fourth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a computing device, the computing device implements the control method described in the above-mentioned first aspect or any possible implementation of the first aspect.

[0033] The present application provides a control method for an electromagnetic lock system, which includes an electromagnetic lock, and the electromagnetic lock is used to control the switch state of a high-voltage switch cabinet. The control method of the electromagnetic lock system can control the switch state of the electromagnetic lock, thereby realizing the control of the switch state of the high-voltage switch cabinet. Specifically, an energy storage device is loaded in the high-voltage switch cabinet, and the switch state of the relay in the energy storage device is obtained. Based on the switch state of the relay, the switch state of the electromagnetic lock provided on the high-voltage switch cabinet is controlled. In other words, based on the switch state of the relay, it is possible to determine whether the energy storage device is energized, thereby controlling the switch state of the electromagnetic lock to realize the control of the opening or closing of the high-voltage switch cabinet, thereby preventing maintenance personnel from mistakenly entering the high-voltage switch cabinet when the energy storage device is energized, and avoiding the occurrence of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

[0035] FIG1 is a schematic diagram of a power system disclosed in an embodiment of the present application;

[0036] FIG2 is a schematic structural diagram of an electromagnetic lock disclosed in one embodiment of the present application;

[0037] FIG3 is a schematic flow chart of a control method of an electromagnetic lock system disclosed in an embodiment of the present application;

[0038] FIG4 is a schematic flow chart of a control method of an electromagnetic lock system disclosed in an embodiment of the present application;

[0039] FIG5 is a schematic flow chart of a control method of an electromagnetic lock system disclosed in an embodiment of the present application;

[0040] FIG6 is a schematic flow chart of a control method of an electromagnetic lock system disclosed in an embodiment of the present application;

[0041] FIG7 is a schematic flow chart of a control method of an electromagnetic lock system disclosed in an embodiment of the present application;

[0042] FIG8 is a schematic block diagram of an electromagnetic lock system disclosed in an embodiment of the present application;

[0043] FIG9 is a schematic diagram of a DC energy storage device disclosed in one embodiment of the present application;

[0044] FIG10 is a schematic diagram of a power system disclosed in an embodiment of the present application;

[0045] FIG11 is an electrical schematic diagram of an electromagnetic lock system disclosed in one embodiment of the present application;

[0046] FIG12 is a schematic diagram of a control device of an electromagnetic lock system disclosed in an embodiment of the present application.

[0047] In the drawings, the drawings are not drawn to scale. DETAILED DESCRIPTION

[0048] The following detailed description of the embodiments of the present application is provided in conjunction with the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present application, but are not intended to limit the scope of the present application, i.e., the present application is not limited to the described embodiments.

[0049] In the description of this application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating directions or positional relationships, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly perpendicular, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0050] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0051] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0052] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0053] The power system is an electrical energy production and consumption system consisting of power plants, transmission and transformation lines, distribution stations, and power users. Its function is to convert natural primary energy into electrical energy through power generation devices, and then supply this energy to users through transmission, transformation, and distribution. To achieve this function, the power system also has corresponding information and control systems at various links and levels. These systems measure, regulate, control, protect, communicate, and dispatch the electrical energy production process to ensure that users receive safe and high-quality electricity.

[0054] High-voltage switchgear performs switching, control, and protection functions in power systems' generation, transmission, distribution, conversion, and consumption. High-voltage switchgear houses the energy storage devices used to transmit electrical energy. If operators or maintenance personnel mistakenly enter the switchgear while the energy storage device or switchgear is energized, there is a risk of electric shock. Therefore, improving the safety and reliability of high-voltage switchgear, preventing accidents, and ensuring the safe operation of power systems is a pressing issue.

[0055] In view of this, the present application provides a control method for an electromagnetic lock system, which includes an electromagnetic lock, and the electromagnetic lock is used to control the switching state of a high-voltage switch cabinet. The control method of the electromagnetic lock system can control the switching state of the electromagnetic lock, thereby realizing the control of the switching state of the high-voltage switch cabinet. Specifically, an energy storage device is loaded in the high-voltage switch cabinet, and the switching state of the relay in the energy storage device is obtained. Based on the switching state of the relay, the switching state of the electromagnetic lock provided on the high-voltage switch cabinet is controlled. In other words, based on the switching state of the relay, it is possible to determine whether the energy storage device is energized, thereby controlling the switching state of the electromagnetic lock to realize the control of the opening or closing of the high-voltage switch cabinet, thereby preventing maintenance personnel from mistakenly entering the high-voltage switch cabinet when the energy storage device is energized, and avoiding the occurrence of safety accidents.

[0056] FIG1 is a schematic diagram of a power system 100 provided in this application.

[0057] As shown in FIG1 , the power system 100 includes an electromagnetic lock system 101 , a high-voltage switchgear 102 , and an energy storage device 103 .

[0058] The electromagnetic lock system 101 includes an electromagnetic lock 1011 , which is provided on a high-voltage switch cabinet 102 and is used to control the switch state of the high-voltage switch cabinet 102 . The high-voltage switch cabinet 102 is used to load the energy storage device 103 .

[0059] FIG2 is a schematic structural diagram of an electromagnetic lock 1011 disclosed in an embodiment of the present application.

[0060] As shown in FIG2 , the electromagnetic lock 1011 includes a lock core 1011 a , a housing 1011 b , an attraction coil 1011 c , a return spring 1011 d , and a mechanical lock hole 1011 e .

[0061] The electromagnetic lock 1011 is a device designed using the principle of electromagnetism. When the attraction coil 1011c is energized, the lock core 1011a contracts toward the inside of the electromagnetic lock 1011, the return spring 1011d is in a compressed state, and the electromagnetic lock 1011 is in an open state; when the attraction coil 1011c is not energized, the lock core 1011a is in a state of extending toward the outside of the electromagnetic lock 1011, the return spring 1011d will not be compressed, and the electromagnetic lock 1011 is in a closed state.

[0062] Compared with traditional locks, the electromagnetic lock 1011 can generate strong suction, has low power consumption, stable and reliable quality, has monitoring signal feedback output, is resistant to external damage, is noiseless, and has fire and anti-theft features.

[0063] FIG3 is a schematic flow chart of a control method of an electromagnetic lock system disclosed in an embodiment of the present application. The electromagnetic lock system may be the electromagnetic lock system 101 in FIG1 .

[0064] 301, obtaining a switching state of a relay in an energy storage device, where the energy storage device is mounted in a high-voltage switch cabinet.

[0065] A relay is an automatic switching element with an isolation function, which plays the role of automatic adjustment, safety protection, and circuit conversion in the circuit. In the technical solution of this application, whether the energy storage device is energized is related to the switching state of the relay.

[0066] 302. Based on the switch state of the relay, control the electromagnetic lock provided on the high-voltage switch cabinet to be opened or closed.

[0067] Specifically, when the relay is in the closed and conducting state, that is, the energy storage device is energized, the electromagnetic lock set on the high-voltage switch cabinet is in the closed state and cannot be opened, that is, the high-voltage switch cabinet remains closed. Maintenance personnel cannot enter the high-voltage switch cabinet when the energy storage device is energized, thereby avoiding the occurrence of safety accidents.

[0068] When the relay is in the disconnected state, that is, the energy storage device is not powered, the electromagnetic lock set on the high-voltage switch cabinet is in the open state. The electromagnetic lock can be opened, and maintenance personnel can enter the high-voltage switch cabinet for maintenance in a safe manner to ensure the safe operation of the power system.

[0069] In an embodiment of the present application, the on / off state of a relay in the energy storage device is obtained, and based on the on / off state of the relay, the on / off state of an electromagnetic lock provided on the high-voltage switchgear is controlled. In other words, based on the on / off state of the relay, it is possible to determine whether the energy storage device is energized, thereby controlling the on / off state of the electromagnetic lock to control the opening or closing of the high-voltage switchgear. This prevents maintenance personnel from accidentally entering the high-voltage switchgear while the energy storage device is energized, thus avoiding safety accidents.

[0070] Optionally, in the embodiment of the present application, the switching state of the relay may be obtained from the submodule controller of the energy storage device.

[0071] The submodule controller of the energy storage device can obtain the switching state of the relay in the energy storage device, obtain the switching state of the relay from the submodule controller, and control the electromagnetic lock to open or close based on the switching state of the relay.

[0072] In the above solution, the electromagnetic lock is controlled to open or close based on the on / off state of the energy storage system's relay. However, in actual applications of high-voltage switchgear, the cabinet body of the high-voltage switchgear may also be short-circuited and energized. Therefore, based on the above solution, the control method of the electromagnetic lock system is further improved. Referring to Figure 4, Figure 4 is a schematic flow chart of the control method of the electromagnetic lock system disclosed in another embodiment of the present application.

[0073] 401, obtain the switch status of the relay.

[0074] 402. Obtain the energized state of the high-voltage switchgear.

[0075] 403 , based on the switch state of the relay and the energized state of the high-voltage switchgear, control the electromagnetic lock to be opened or closed.

[0076] Specifically, when the relay is in a closed and conducting state, that is, the energy storage device is energized, or the high-voltage switchgear is energized, the electromagnetic lock set on the high-voltage switchgear is controlled to be in a closed state, and the electromagnetic lock cannot be opened, that is, the high-voltage switchgear remains closed. Maintenance personnel cannot enter the high-voltage switchgear when the energy storage device is energized or the high-voltage switchgear is energized, thereby avoiding the occurrence of safety accidents.

[0077] Only when the relay is in the disconnected state, that is, the energy storage device is not powered and the high-voltage switchgear is not energized, the electromagnetic lock set on the high-voltage switchgear is controlled to be in the open state. The electromagnetic lock can be opened and maintenance personnel can enter the high-voltage switchgear for maintenance in a safe manner to ensure the safe operation of the power system.

[0078] In the embodiment of the present application, not only the switching state of the relay is obtained, but also the energized state of the high-voltage switch cabinet is obtained, and based on the switching state of the relay and the energized state of the high-voltage switch cabinet, the electromagnetic lock is controlled to be opened or closed, thereby preventing maintenance personnel from accidentally entering the high-voltage switch cabinet when the energy storage device is energized or the high-voltage switch cabinet is energized, thereby avoiding the occurrence of safety accidents.

[0079] The following describes in detail a method for obtaining the energized state of a high-voltage switchgear with reference to the accompanying drawings.

[0080] Figure 5 is a schematic flow chart of a control method for an electromagnetic lock system disclosed in another embodiment of the present application. 501 in Figure 5 is similar to 401 in the aforementioned embodiment, and reference may be made to the aforementioned embodiment. For the sake of brevity, details will not be repeated here.

[0081] 502. Obtain a first current of the high-voltage switchgear from a current input side of the high-voltage switchgear.

[0082] 503 , based on the switch state of the relay and the first current, control the electromagnetic lock to open or close.

[0083] Specifically, when the first current is not zero, that is, the high-voltage switchgear is energized, or the relay is in a closed and conductive state, that is, the energy storage device is energized, at this time, the electromagnetic lock set on the high-voltage switchgear is controlled to be in a closed state, and the electromagnetic lock cannot be opened, that is, the high-voltage switchgear remains closed, and maintenance personnel cannot enter the high-voltage switchgear when the energy storage device is energized or the high-voltage switchgear is energized, thereby avoiding the occurrence of safety accidents.

[0084] When the first current is zero, that is, the high-voltage switchgear is not energized, and at the same time, the relay is in the disconnected state, that is, the energy storage device is not powered, the electromagnetic lock set on the high-voltage switchgear is controlled to be in the open state. The electromagnetic lock can be opened, and maintenance personnel can enter the high-voltage switchgear for maintenance in a safe situation to ensure the safe operation of the power system.

[0085] In this embodiment of the present application, a first current of the high-voltage switchgear is obtained from the current input side of the high-voltage switchgear, and the first current is used to determine whether the high-voltage switchgear is energized. In other words, the electromagnetic lock is controlled to open or close based on the switch state of the relay and the first current, preventing maintenance personnel from accidentally entering the high-voltage switchgear when the energy storage device or the high-voltage switchgear is energized, thereby avoiding safety accidents.

[0086] Optionally, in an embodiment of the present application, a second current of the high-voltage switchgear can also be obtained at the current output side of the high-voltage switchgear. Referring to FIG6 , 601-602 in FIG6 are similar to 501-502 in the aforementioned embodiment, and reference can be made to the aforementioned embodiment. For the sake of brevity, they will not be repeated here.

[0087] 603 , obtaining a second current of the high-voltage switchgear from the current output side of the high-voltage switchgear.

[0088] 604 , based on the switch state of the relay, the first current, and the second current, control the electromagnetic lock to be opened or closed.

[0089] Specifically, when the first current or the second current is not zero, that is, the high-voltage switchgear is energized, or the relay is in a closed and conductive state, that is, the energy storage device is energized, at this time, the electromagnetic lock set on the high-voltage switchgear is controlled to be in a closed state, and the electromagnetic lock cannot be opened, that is, the high-voltage switchgear remains closed, and maintenance personnel cannot enter the high-voltage switchgear when the energy storage device is energized or the high-voltage switchgear is energized, thereby avoiding the occurrence of safety accidents.

[0090] When the first current is zero and the second current is zero, that is, the high-voltage switchgear is not energized, and at the same time, the relay is in the disconnected state, that is, the energy storage device is not powered, the electromagnetic lock set on the high-voltage switchgear is controlled to be in the open state. The electromagnetic lock can be opened, and maintenance personnel can enter the high-voltage switchgear for maintenance in a safe situation to ensure the safe operation of the power system.

[0091] In the embodiment of the present application, not only the first current of the high-voltage switchgear is obtained from the current input side of the high-voltage switchgear, but also the second current of the high-voltage switchgear is obtained from the current output side of the high-voltage switchgear. The first and second currents are used to determine whether the high-voltage switchgear is energized, thereby improving the accuracy of the determination of the energized state of the high-voltage switchgear. In other words, based on the switching state of the relay, the first and second currents, the electromagnetic lock is controlled to open or close, preventing maintenance personnel from accidentally entering the high-voltage switchgear while it is energized, thereby avoiding safety accidents.

[0092] It should be understood that in the above solution, the first current of the high-voltage switchgear is obtained from the current input side of the high-voltage switchgear, and the second current of the high-voltage switchgear is obtained from the current output side of the high-voltage switchgear. In embodiments of the present application, the second current of the high-voltage switchgear can also be obtained only from the current output side of the high-voltage switchgear, and the electromagnetic lock can be controlled to open or close based on the switching state of the relay and the second current. This application is not limited to this.

[0093] It should be understood that the above-described method for obtaining the energized state of a high-voltage switchgear is merely illustrative of an embodiment of the present application and does not constitute a limitation of the present application. The present application is not limited to obtaining only the first current and the second current. For example, current information for multiple different nodes in a high-voltage switchgear circuit can be obtained, and this application does not limit this.

[0094] Optionally, in an embodiment of the present application, the electromagnetic lock system may also be provided with a charged indication device. Referring to Figure 7, Figure 7 is a schematic flow chart of a control method of an electromagnetic lock system disclosed in another embodiment of the present application. 701-702 in Figure 7 are similar to 401-402 in the aforementioned embodiment. You can refer to the aforementioned embodiment. For the sake of brevity, they will not be repeated here.

[0095] 703, based on the switch state of the relay and the energized state of the high-voltage switchgear, control the indicator light of the energized indicator device to light up or go out.

[0096] Specifically, when the relay is in a closed and conducting state, that is, the energy storage device is energized, or the high-voltage switch cabinet is energized, the indicator light of the energized indicator device is controlled to light up. Maintenance personnel can quickly know that the relay is energized or the high-voltage switch cabinet is energized according to the lighting of the indicator light, and are not allowed to enter the high-voltage switch cabinet for maintenance work.

[0097] Only when the relay is in the disconnected state, that is, the energy storage device is not energized and the high-voltage switch cabinet is not energized, the indicator light of the control energized indicator device will go out. The maintenance personnel can quickly know that the relay is not energized and the high-voltage switch cabinet is not energized based on the indicator light going out, and can enter the high-voltage switch cabinet for maintenance work.

[0098] Based on the switching state of the relay and the energized state of the high-voltage switchgear, the indicator light of the energized indication device is controlled to light up or go out, so that maintenance personnel can quickly and easily know the switching state of the relay and the energized state of the high-voltage switchgear by lighting up or going out the indicator light, and then judge whether they can enter the high-voltage switchgear for maintenance work.

[0099] The control method of the electromagnetic lock system according to the embodiment of the present application is described above. The electromagnetic lock system according to the embodiment of the present application is described below. For parts not described in detail, please refer to the aforementioned embodiments.

[0100] FIG8 is a schematic diagram of an electromagnetic lock system 101 disclosed in an embodiment of the present application. In the embodiment of the present application, the electromagnetic lock system 101 may include an electromagnetic lock 1011 and a control module 1012 .

[0101] The electromagnetic lock 1011 is provided on the high-voltage switch cabinet and is used to control the switch state of the high-voltage switch cabinet, and the high-voltage switch cabinet is used to load the energy storage device.

[0102] The control module 1012 is in communication with the energy storage device 103 , and is configured to obtain status information of relays in the energy storage device 103 .

[0103] The electromagnetic lock system 101 provided in the embodiment of the present application includes an electromagnetic lock 1011 and a control module 1012. The control module 1012 is connected to the energy storage device 103 for communication and obtains status information of the relay in the energy storage device 103. The electromagnetic lock 1011 controls the switch status of the high-voltage switch cabinet 102 equipped with the energy storage device 103 to prevent maintenance personnel from accidentally entering the high-voltage switch cabinet 103 when the energy storage device 103 is energized, thereby avoiding the occurrence of safety accidents.

[0104] The control module 1012 and the energy storage device 103 can be communicated with each other via wireless communication methods such as 3G / 4G / 5G / ETH.

[0105] The energy storage device described in this application refers to a device that can store electrical energy, for example, it can be a DC energy storage device.

[0106] FIG9 is a schematic diagram of a DC energy storage device 903 disclosed in one embodiment of the present application. As shown in FIG9(a), the DC energy storage device 903 includes multiple energy storage submodules 9031, which are connected in series. As shown in FIG9(b) and (c), the energy storage submodule 9031 includes a power module 9031(a) and a battery module 9031(b), which are connected in parallel. A relay 9032 is provided between the power module 9031(a) and the battery module 9031(b).

[0107] Optionally, in this embodiment, the DC energy storage device 903 may further include a submodule controller (not shown in the figure), which can obtain status information of the relay 9032. The control module 1012 is connected to the submodule controller and obtains the status information of the relay from the submodule controller, where the status information includes the switching state of the relay. The control module 1012 and the submodule controller can be connected to each other via wireless communication methods such as 3G / 4G / 5G / ETH.

[0108] Optionally, the submodule controller can also control the on and off of the power module 9031 (a), and can also rely on optical fiber to interact with the BMS for information, receive the current and voltage of the DC energy storage device 903 obtained by the BMS, and transmit the current and voltage information to the control module 1012 of the electromagnetic lock system 101.

[0109] Optionally, the DC energy storage device 903 may further include components such as a reactor 9033 , which is not limited in this application.

[0110] Optionally, the power module 9031(a) of the energy storage submodule 9031 can be a power module composed of an insulated gate bipolar transistor (IGBT). The IGBT power module has the advantages of large input impedance, low drive power, simple control circuit, low switching loss, fast on-off speed, high operating frequency, and large component capacity. It should be understood that the IGBT power module mentioned above is only an illustrative example and does not constitute a limitation of this application. The power module 9031(a) of the energy storage submodule 9031 in this application can also be other types of power modules. Furthermore, the power module 9031(a) can be a full-bridge power module, as shown in (c) of Figure 9, or a half-bridge power module, as shown in (b) of Figure 9.

[0111] Optionally, the battery module 9031 ( b ) of the energy storage submodule 9031 may be a single-branch series battery module or a multi-branch parallel battery module, which is not limited in this application.

[0112] Optionally, in an embodiment of the present application, a first current sensor is provided on the current input side of the high-voltage switchgear, and the first current sensor is used to obtain first current information of the high-voltage switchgear and send the first current information to the control module, where the first current information includes the first current of the high-voltage switchgear.

[0113] A first current sensor is set on the current input side of the high-voltage switch cabinet to obtain first current information of the high-voltage switch cabinet and send it to the control module of the electromagnetic lock system so that the control module obtains the first current information of the high-voltage switch cabinet.

[0114] Optionally, in an embodiment of the present application, a second current sensor is provided on the current output side of the high-voltage switchgear, and the second current sensor is used to obtain second current information of the high-voltage switchgear and send the second current information to the control module. The second current information includes the second current of the high-voltage switchgear.

[0115] A second current sensor is set on the current output side of the high-voltage switch cabinet to obtain second current information of the high-voltage switch cabinet and send it to the control module of the electromagnetic lock system so that the control module obtains the second current information of the high-voltage switch cabinet.

[0116] Specifically, as shown in FIG10 , the high-voltage switch cabinet 102 may include a first cabinet door 1021 and a second cabinet door 1022 that are arranged opposite to each other. The first cabinet door 1021 is provided with a first current sensor 1041 , and the second cabinet door 1022 is provided with a second current sensor 1042 .

[0117] It should be understood that the first current sensor 1041 is provided on the first cabinet door 1021 and the second current sensor 1042 is provided on the second cabinet door 1022 is only an exemplary description of the present application and does not constitute a limitation to the present application.

[0118] Optionally, the first current sensor and the second current sensor are Hall current sensors. The Hall current sensor is a magnetic sensitive sensor that uses the Hall effect of semiconductor materials for measurement. It can measure current of any waveform, such as DC, AC, pulse waveform, etc., and even measure transient peak values ​​with high accuracy and good linearity.

[0119] FIG11 is an electrical schematic diagram of an electromagnetic lock system 101 disclosed in an embodiment of the present application.

[0120] Optionally, in an embodiment of the present application, as shown in FIG11 , the electromagnetic lock system 101 may include a first switch S1 , and the first switch S1 is connected in series with the pull-in coil L1 of the electromagnetic lock.

[0121] Specifically, the circuit where the electromagnetic lock attraction coil L1 is located can be turned on by controlling the conduction of the first switch S1, the electromagnetic lock attraction coil L1 is energized, the lock core 1011a contracts inward, the return spring 1011d is in a compressed state, the electromagnetic lock 1011 is in an open state, and the high-voltage switch cabinet 102 can be opened.

[0122] The circuit where the electromagnetic lock attraction coil L1 is located can be disconnected by controlling the disconnection of the first switch S1. The electromagnetic lock attraction coil L1 is not energized, the lock core 1011a is in a state of extending to the outside of the electromagnetic lock 1011, the return spring 1011d is not compressed, the electromagnetic lock 1011 is in a closed state, and the high-voltage switch cabinet 102 cannot be opened.

[0123] In the above scheme, the first switch S1 is connected in series with the electromagnetic lock's pull-in coil L1. By controlling the conduction and disconnection of the first switch S1, the conduction and disconnection of the circuit where the electromagnetic lock's pull-in coil L1 is located are controlled, thereby controlling whether the pull-in coil L1 is energized or not. This makes the electromagnetic lock in an open state when the pull-in coil L1 is energized, and in a closed state when the pull-in coil L1 is not energized. That is, by controlling the first switch S1, the switching state of the electromagnetic lock is controlled.

[0124] Optionally, in the embodiment of the present application, referring to FIG11 , the electromagnetic lock system 101 further includes a second switch S2 and a charge display device L2 , which are connected in series and in parallel with the first switch S1 and the pull-in coil L1 .

[0125] Specifically, the circuit where the power display device L2 is located can be turned on by controlling the conduction of the second switch S2, and the indicator light of the power display device L2 lights up to remind maintenance personnel not to enter the high-voltage switch cabinet for maintenance.

[0126] The circuit where the live display device L2 is located can be disconnected by controlling the disconnection of the second switch S2, and the indicator light of the live display device L2 goes out, reminding maintenance personnel that they can enter the high-voltage switch cabinet for maintenance.

[0127] In the above solution, the charge indicator is connected in parallel with the electromagnetic lock's pull-in coil. This allows the two to be energized independently within the electromagnetic lock system's control circuit. The indicator light on the charge indicator is turned on or off by controlling the conduction and disconnection of the second switch S1, alerting maintenance personnel whether they can enter the high-voltage switchgear for maintenance.

[0128] Optionally, in an embodiment of the present application, continuing to refer to Figure 11, the electromagnetic lock system 101 also includes a first power supply 105(a) and a second power supply 105(b) connected in parallel, the first power supply 105(a) is used to provide electrical energy to the electromagnetic lock system 101, and the second power supply 105(b) is used to provide electrical energy to the electromagnetic lock system 101 when the first power supply 105(a) cannot provide electrical energy.

[0129] A first power supply 105(a) and a second power supply 705(b) are set in parallel to provide power to the electromagnetic lock system 101. When the first power supply 105(a) cannot provide power, the second power supply 105(b) provides power to the electromagnetic lock system to ensure the normal operation of the electromagnetic lock system.

[0130] Optionally, in an embodiment of the present application, the second power supply 105 ( b ) is a detachable power supply, and when the second power supply 105 ( b ) fails, it is easy to remove and replace it with a new second power supply 105 ( b ).

[0131] Optionally, when both the first power supply and the second power supply fail and cannot provide power to the electromagnetic lock system, the mechanical lock core of the electromagnetic lock can be used to mechanically unlock the lock by rotating the mechanical key, retracting the lock core and compressing the reset spring to put the electromagnetic lock in the open state.

[0132] Optionally, in an embodiment of the present application, as shown in FIG11 , the electromagnetic lock system 101 further includes a fuse, which is connected in series with the pull-in coil L1 of the electromagnetic lock to prevent the electromagnetic lock from being damaged when the system current is too high.

[0133] Optionally, one or more fuses can be set. They can be set between the first power supply and the first switch S1, or between the first power supply and the pull-in coil L1. Fuses can also be set both between the first power supply and the first switch S1 and between the first power supply and the pull-in coil L1, such as the two fuses FU1 and FU2 in Figure 11.

[0134] An embodiment of the present application also provides a control device 1200 for an electromagnetic lock system. As shown in FIG12 , the control device 1200 includes a processor 1201 and a memory 1202 , wherein the memory 1202 is used to store computer programs, and the processor 1201 is used to call computer programs so that the control device 1200 implements the control methods of the various embodiments of the present application described above.

[0135] An embodiment of the present application further provides a readable storage medium for storing a computer program. When the computer program is executed by a computing device, the computing device implements the control methods of the various embodiments of the present application described above.

[0136] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A control method for an electromagnetic lock system, characterized in that: The control method includes: Obtaining a switching state of a relay in an energy storage device, wherein the energy storage device is mounted in a high-voltage switch cabinet; Based on the switching state of the relay, the electromagnetic lock provided on the high-voltage switch cabinet is controlled to be opened or closed.

2. The control method according to claim 1, characterized in that: The obtaining of the switching state of the relay in the energy storage device includes: The switching state of the relay is obtained from the submodule controller of the energy storage device.

3. The control method according to claim 1 or 2, characterized in that: The control method further includes: Obtaining the energized state of the high-voltage switchgear; The controlling the electromagnetic lock provided on the high-voltage switch cabinet to be opened or closed includes: controlling the electromagnetic lock to be opened or closed based on the switch state of the relay and the energized state of the high-voltage switch cabinet.

4. The control method according to claim 3, characterized in that: The obtaining of the energized state of the high-voltage switchgear includes: Obtaining a first current of the high-voltage switchgear from a current input side of the high-voltage switchgear; The controlling the electromagnetic lock provided on the high-voltage switch cabinet to be turned on or off includes: controlling the electromagnetic lock to be turned on or off based on the switching state of the relay and the first current.

5. The control method according to claim 3, characterized in that: The obtaining of the energized state of the high-voltage switchgear includes: Obtaining a second current of the high-voltage switchgear from a current output side of the high-voltage switchgear; The controlling the electromagnetic lock provided on the high-voltage switch cabinet to be turned on or off includes: controlling the electromagnetic lock to be turned on or off based on the switching state of the relay, the first current, and the second current.

6. The control method according to any one of claims 3 to 5, characterized in that: The control method further includes: Based on the switch state of the relay and the charged state of the high-voltage switchgear, the indicator light of the charged indicator device is controlled to light up or go out.

7. An electromagnetic lock system, characterized in that: include: An electromagnetic lock, which is provided on a high-voltage switchgear and is used to control the opening or closing of the high-voltage switchgear, wherein the high-voltage switchgear is used to load an energy storage device; and A control module is communicatively connected to the energy storage device, and is used to obtain status information of the relay in the energy storage device.

8. The electromagnetic lock system according to claim 7, characterized in that: The energy storage device includes a submodule controller, the control module is in communication with the submodule controller, and the control module is used to obtain status information of the relay from the submodule controller.

9. The electromagnetic lock system according to claim 7 or 8, characterized in that: A first current sensor is provided on the current input side of the high-voltage switch cabinet. The first current sensor is used to obtain first current information of the high-voltage switch cabinet and send the first current information to the control module.

10. The electromagnetic lock system according to any one of claims 7 to 9, characterized in that: A second current sensor is provided on the current output side of the high-voltage switch cabinet, and the second current sensor is used to obtain second current information of the high-voltage switch cabinet and send the second current information to the control module.

11. The electromagnetic lock system according to any one of claims 7 to 10, characterized in that: The electromagnetic lock system further includes a charged display device, which is connected in parallel with the pull-in coil of the electromagnetic lock.

12. The electromagnetic lock system according to any one of claims 7 to 11, characterized in that: The electromagnetic lock system also includes a first power supply and a second power supply connected in parallel, the first power supply and the second power supply are respectively connected in series with the attraction coil of the electromagnetic lock and the charged display device, the first power supply is used to provide electrical energy to the electromagnetic lock system, and the second power supply is used to provide electrical energy to the electromagnetic lock system when the first power supply cannot provide electrical energy.

13. The electromagnetic lock system according to any one of claims 7 to 12, characterized in that: The electromagnetic lock system further includes a fuse connected in series with the pull-in coil of the electromagnetic lock.

14. A control device for an electromagnetic lock system, characterized in that: The control device comprises a processor and a memory, wherein the memory is used to store a computer program and the processor is used to call the computer program so that the control device implements the control method according to any one of claims 1 to 6.

15. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a computing device, the computing device is enabled to implement the control method according to any one of claims 1 to 6.

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