Monitoring device and system, control method, computer equipment and readable storage medium

Abstract

The invention relates to a monitoring device and system, a control method, computer equipment, a computer readable storage medium and a computer program product. The monitoring device comprises a DC voltage transformer, an incoming line DC current transformer, an outgoing line DC current transformer and a measuring device, the DC voltage transformer measures DC voltage of a bus, the incoming line DC current transformer measures incoming line DC current of the flexible interconnection device, and the outgoing line DC current transformer measures outgoing line DC current of the flexible interconnection device. The outgoing line direct current transformer measures outgoing line direct current of the flexible interconnection device, the measuring equipment collects direct current voltage, incoming line direct current and outgoing line direct current, and monitoring and operation scheduling are carried out on the flexible interconnection device according to the direct current voltage, the incoming line direct current and the outgoing line direct current. The device can adapt to complex and changeable operation states, and operation scheduling can be automatically adjusted.

Description

Technical Field

[0001] The present application relates to the technical field of flexible interconnection devices in metropolitan areas, and in particular to a monitoring device, system, control method, computer equipment, computer-readable storage medium and computer program product. Background Art

[0002] As the scale of distributed power sources such as power generation systems and energy storage systems connected to the distribution network and new loads such as electric vehicles increases, the operation status of the distribution network becomes more complex and changeable. In particular, the low-voltage substation will gradually transform from a single passive power distribution unit to an integrated hub for power production and consumption that can meet the needs of local consumption of distributed power sources and reliable power supply for new loads, which seriously increases the difficulty of distribution network operation and dispatching. The "closed-loop design, open-loop operation" structure of the traditional distribution network has gradually been unable to adapt to the new requirements of distribution network operation.

[0003] In order to adapt to the new requirements of distribution network operation, the flexible interconnection technology of substations can achieve safe closing of multiple power sources, economic distribution of ring network currents and reasonable absorption of distributed power sources with its good access and control capabilities, thereby ensuring the power supply reliability of the distribution network.

[0004] Since each converter port of the substation flexible interconnection device is coupled through the DC bus, the power of each port is collected and distributed through the DC bus. When the electrical quantity on the DC side fluctuates, it will directly affect the power transmission of each interconnected port, making it difficult for the substation flexible interconnection device to adapt to the increasingly complex and changeable operating conditions. Summary of the invention

[0005] Based on this, it is necessary to provide a monitoring device, system, control method, computer equipment, computer-readable storage medium and computer program product that can adapt to complex and changeable operating conditions and automatically adjust operation scheduling in response to the above technical problems.

[0006] In a first aspect, the present application provides a monitoring device, the monitoring device comprising:

[0007] A DC voltage transformer, a first end of which is connected to a busbar and a second end of which is grounded, and is used to measure the DC voltage of the busbar;

[0008] An incoming DC current transformer, a first end of which is connected to the busbar, and a second end of which is connected to the flexible interconnection device via an incoming cable, for measuring the incoming DC current of the flexible interconnection device;

[0009] an outgoing DC current transformer, wherein a first end of the outgoing DC current transformer is connected to the busbar, and a second end of the outgoing DC current transformer is connected to the flexible interconnection device through an outgoing cable, and is used to measure an outgoing DC current of the flexible interconnection device;

[0010] A measuring device, wherein the measuring device is connected to the third end of the DC voltage transformer, the third end of the incoming DC current transformer and the third end of the outgoing DC current transformer, and is used to collect the DC voltage, the incoming DC current and the outgoing DC current, and is also used to monitor and schedule the operation of the flexible interconnection device according to the DC voltage, the incoming DC current and the outgoing DC current.

[0011] In one embodiment, the monitoring device further comprises:

[0012] An incoming line protection DC current transformer, one end of which is connected to the incoming line DC current transformer, and the other end of which is connected to the flexible interconnection device through the incoming line cable, for generating a first fault current;

[0013] An outgoing line protection DC current transformer, one end of which is connected to the outgoing line DC current transformer, and the other end of which is connected to the flexible interconnection device through the outgoing line cable, for generating a second fault current.

[0014] In one embodiment, the monitoring device further includes:

[0015] An incoming line switch, which is installed between the incoming line DC current transformer and the busbar and is used to open or close the connection between the monitoring device and the outgoing line terminal of the flexible interconnection device;

[0016] An outgoing line switch is installed between the outgoing line DC current transformer and the busbar, and is used to switch on or off the connection between the monitoring device and the incoming line end of the flexible interconnection device.

[0017] In one embodiment, the monitoring device further comprises:

[0018] An Ethernet switch is communicatively connected to the measuring device and is used to establish data interaction between the measuring device and an external device.

[0019] In a second aspect, the present application also provides a monitoring system, the system comprising:

[0020] Flexible interconnection device;

[0021] A monitoring device, wherein the monitoring device is connected to the flexible interconnection device, and the monitoring device is the monitoring device described in the first aspect.

[0022] In one embodiment, the flexible interconnection device comprises:

[0023] Busbars in flexible interconnection devices;

[0024] A converter, wherein the converter is connected to an outgoing cable of the monitoring device;

[0025] A first load switch, connected to the incoming cable of the monitoring device and the busbar in the flexible interconnection device, respectively, for switching on or off the connection between the incoming end of the monitoring device and the busbar in the flexible interconnection device;

[0026] The second load switch is connected to the outgoing cable of the monitoring device and the busbar in the flexible interconnection device respectively, and is used to open or close the connection between the outgoing end of the monitoring device and the busbar in the flexible interconnection device.

[0027] In a third aspect, the present application further provides a control method for a monitoring device, which is applied to the monitoring device described in the first aspect, and the method includes:

[0028] Collect the DC voltage of the busbar, and collect the incoming DC current and outgoing DC current of the flexible interconnection device;

[0029] The flexible interconnection device is monitored and its operation is scheduled according to the DC voltage, the incoming DC current and the outgoing DC current.

[0030] In a fourth aspect, the present application further provides a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0031] Collect the DC voltage of the busbar, and collect the incoming DC current and outgoing DC current of the flexible interconnection device;

[0032] The flexible interconnection device is monitored and its operation is scheduled according to the DC voltage, the incoming DC current and the outgoing DC current.

[0033] In a fifth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the following steps are implemented:

[0034] Collect the DC voltage of the busbar, and collect the incoming DC current and outgoing DC current of the flexible interconnection device;

[0035] The flexible interconnection device is monitored and its operation is scheduled according to the DC voltage, the incoming DC current and the outgoing DC current.

[0036] In a sixth aspect, the present application further provides a computer program product, including a computer program, which implements the following steps when executed by a processor:

[0037] Collect the DC voltage of the busbar, and collect the incoming DC current and outgoing DC current of the flexible interconnection device;

[0038] The flexible interconnection device is monitored and its operation is scheduled according to the DC voltage, the incoming DC current and the outgoing DC current.

[0039] The above-mentioned monitoring device, system, control method, computer equipment, computer-readable storage medium and computer program product measure the DC voltage of the bus in the monitoring device through a DC voltage transformer, measure the DC current at the outlet end of the flexible interconnection device through the incoming DC current transformer to obtain the incoming DC current, measure the DC current at the incoming end of the flexible interconnection device through the outgoing DC current transformer to obtain the outgoing DC current, collect the measured DC voltage, incoming DC current and outgoing DC current through the measuring equipment, monitor the operation of the flexible interconnection device according to the DC voltage, incoming DC current and outgoing DC current, and if the flexible interconnection device operates abnormally, schedule the operation of the flexible interconnection device, and can automatically detect the operating status and schedule the operation of the flexible interconnection device, so that the flexible interconnection device can adapt to complex and changeable operating environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 is a structural block diagram of a monitoring device in one embodiment;

[0042] Figure 2 is a structural block diagram of a monitoring device in another embodiment;

[0043] Figure 3 A structural block diagram of a monitoring system in one embodiment;

[0044] Figure 4 A schematic flow chart of a control method of a monitoring device in another embodiment;

[0045] Figure 5 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment.

[0046] Description of reference numerals:

[0047] Monitoring device 100, DC voltage transformer 101, incoming DC current transformer 102, outgoing DC current transformer 103, measuring device 104, busbar 105, incoming cable 106, outgoing cable 107;

[0048] Incoming line protection DC current transformer 201, outgoing line protection DC current transformer 202;

[0049] Incoming switch 301, outgoing switch 302;

[0050] Flexible interconnection device 400, first load switch 401, second load switch 402, converter 403, bus 404 in the flexible interconnection device;

[0051] Ethernet switch 501;

[0052] Aviation plug 601. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0054] The monitoring device 100 provided in the embodiment of the present application is capable of performing real-time monitoring on the operating status of the DC side of the flexible interconnection device of the substation, and can solve the current problem of lack of good real-time monitoring and measurement of DC side electrical quantities of the flexible interconnection device of the substation area, adapt to the increasingly complex and changeable operating status of the flexible interconnection device of the substation area, adapt to the continuous development of user electricity demand, and adapt to the increasingly rich and diverse control mode scenarios.

[0055] The monitoring device 100 provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown. Among them, the DC voltage transformer 101, the incoming DC current transformer 102, the outgoing DC current transformer 103 and the measuring device 104 are all integrated in the monitoring device 100, the first end of the DC voltage transformer 101 is connected to the bus 105, and the second end is grounded, the first end of the incoming DC current transformer 102 is connected to the bus 105, and the second end is connected to the flexible interconnection device through the incoming cable 106, the first end of the outgoing DC current transformer 103 is connected to the bus 105, and the second end is connected to the flexible interconnection device through the outgoing cable 107, and the measuring device 104 is connected to the third end of the DC voltage transformer 101, the third end of the incoming DC current transformer 102 and the third end of the outgoing DC current transformer 103.

[0056] The monitoring device 100 measures the DC voltage of the bus 105 in the monitoring device 100 through the DC voltage transformer 101, measures the DC current at the outgoing end of the flexible interconnection device 400 through the incoming DC current transformer 102 to obtain the incoming DC current, measures the DC current at the incoming end of the flexible interconnection device 400 through the outgoing DC current transformer 103 to obtain the outgoing DC current, collects the measured DC voltage, incoming DC current and outgoing DC current through the measuring device 104, monitors the operation of the flexible interconnection device 400 according to the DC voltage, incoming DC current and outgoing DC current, and if the flexible interconnection device 400 operates abnormally, performs operation scheduling on the flexible interconnection device 400, can automatically detect the operating status, and perform operation scheduling on the flexible interconnection device, so that the flexible interconnection device can adapt to complex and changeable operating environments. In addition, without modifying the original devices and systems, only a short power outage is required to connect the flexible interconnection device 400 and the monitoring device 100 through a cable, so that the flexible interconnection device 400 can be monitored and the operation scheduling can be realized through the monitoring device 100, which can reduce the power supply impact on users and improve the reliability of the flexible interconnection device.

[0057] It should be noted that when the flexible interconnection device 400 is operated and monitored by the monitoring device 100, it is sufficient to connect the incoming cable 106 of the monitoring device 100 to the outgoing terminal of the flexible interconnection device 400. Only a short power outage is required, and there is no need to perform non-standard transformation on the original flexible interconnection device 400. In addition, the impact on the power supply of the user is small. The measuring device 104 can be used to efficiently control the operating status of the flexible interconnection device 400 in real time, meeting the increasingly complex requirements of the flexible interconnection device 400. Among them, the flexible interconnection device 400 can include a station area flexible interconnection device.

[0058] In an exemplary embodiment, Figure 2 As shown, the monitoring device 100 also includes: an incoming line protection DC current transformer 201 and an outgoing line protection DC current transformer 202, one end of the incoming line protection DC current transformer 201 is connected to the incoming line DC current transformer 102, and the other end is connected to the flexible interconnection device 400 through the incoming line cable 106, the incoming line protection DC current transformer 201 generates a first fault current, one end of the outgoing line protection DC current transformer 202 is connected to the outgoing line DC current transformer 103, and the other end is connected to the flexible interconnection device 400 through the outgoing line cable 107, and the outgoing line protection DC current transformer 202 generates a second fault current.

[0059] When a fault such as leakage occurs in the circuit at the outgoing end of the flexible interconnection device 400, a first fault current is generated through the incoming line protection DC current transformer 201. When a fault such as leakage occurs in the circuit at the incoming line of the flexible interconnection device 400, a second fault current is generated through the outgoing line protection DC current transformer 202.

[0060] When a fault such as leakage occurs in the circuit, the incoming line protection DC current transformer 201 and the outgoing line protection DC current transformer 202 will generate a fault current, causing the monitoring device 100 to enter a protection state. The fault current is transmitted to the automation system, and the automation system locates the fault position according to the fault current and solves the fault problem at the fault position. Fault information can be generated and transmitted to the automation system, and the automation system locates the fault and solves the fault accordingly, thereby protecting the monitoring device 100.

[0061] In an exemplary embodiment, Figure 2 As shown, the monitoring device 100 also includes: an incoming switch 301 and an outgoing switch 302. The incoming switch 301 is installed between the incoming DC current transformer 102 and the bus 105. The incoming switch 301 turns on or off the connection between the monitoring device 100 and the outgoing end of the flexible interconnection device 400. The outgoing switch 302 is installed between the outgoing DC current transformer 103 and the bus 105. The outgoing switch 302 turns on or off the connection between the monitoring device 100 and the incoming end of the flexible interconnection device 400.

[0062] It should be noted that by closing the incoming line switch 301 to control the conduction between the monitoring device 100 and the outgoing line terminal of the flexible interconnection device 400, by closing the incoming line switch 301 to control the disconnection between the monitoring device 100 and the outgoing line terminal of the flexible interconnection device 400, by closing the outgoing line switch 302 to control the conduction between the monitoring device 100 and the incoming line terminal of the flexible interconnection device 400, and by opening the outgoing line switch 302 to control the disconnection between the monitoring device 100 and the incoming line terminal of the flexible interconnection device 400, the reliability of the monitoring device can be enhanced.

[0063] In an exemplary embodiment, Figure 2 As shown, the monitoring device 100 also includes: an aviation plug 601, which is used as an intermediate connector for connecting the measuring device 104 with the DC voltage transformer 101, the incoming DC current transformer 102, and the outgoing DC current transformer 103. The measuring device 104 is connected to the aviation plug 601 by a direct plug-in connection method, and the aviation plug 601 is connected to the third end of the DC voltage transformer 101, the third end of the incoming DC current transformer 102, and the third end of the outgoing DC current transformer 103 through a control cable to realize the collection of DC voltage, incoming DC current, and outgoing DC current. By using the aviation plug 601 as an intermediate connector, when the measuring device 104 fails, the measuring device 104 can be directly replaced without power outage for maintenance, which effectively improves the power supply reliability.

[0064] In an exemplary embodiment, Figure 2As shown, the monitoring device 100 further includes: an Ethernet switch 501 , which is in communication connection with the measuring device 104 and is used to establish data interaction between the measuring device 104 and an external device.

[0065] The Ethernet switch 501 is a switch based on Ethernet for data transmission, and Ethernet is a local area network using a shared bus type transmission media.

[0066] It should be noted that the Ethernet switch 501 can be set inside the monitoring device 100, and can also be set inside the flexible interconnection device 400. The Ethernet switch 501 enables the system composed of the monitoring device 100 and the flexible interconnection device 400 to interact with external devices in real time, thereby improving the monitoring and dispatching capabilities of the system composed of the monitoring device 100 and the flexible interconnection device 400 for the power system.

[0067] In an exemplary embodiment, Figure 2 As shown, the monitoring device 100 includes a DC voltage transformer 101, an incoming DC current transformer 102, an outgoing DC current transformer 103, a measuring device 104, an incoming protection DC current transformer 201, an outgoing protection DC current transformer 202, an incoming switch 301, an outgoing switch 302, an Ethernet switch 501 and an aviation plug 601. The DC voltage transformer 101, the incoming DC current transformer 102, the outgoing DC current transformer 103, the measuring device 104, the incoming protection DC current transformer 201, the outgoing protection DC current transformer 202, the incoming switch 301, the outgoing switch 302, the Ethernet switch 501 and the aviation plug 601 are integrated in the same switch cabinet.

[0068] In an exemplary embodiment, Figure 1 and Figure 3 As shown, a monitoring system is provided, including: a flexible interconnection device 400 and a monitoring device 100, wherein the monitoring device 100 is connected to the flexible interconnection device 400, and the monitoring device 100 is the monitoring device 100 in any of the above embodiments.

[0069] In an exemplary embodiment, Figure 3As shown, the flexible interconnection device 400 includes: a first load switch 401, a second load switch 402, a converter 403 and a bus 404 in the flexible interconnection device. The converter 403 is connected to the outgoing cable 107 of the monitoring device 100. The first load switch 401 is respectively connected to the incoming cable 106 of the monitoring device 100 and the bus 404 in the flexible interconnection device, and is used to switch on or off the connection between the incoming end of the monitoring device 100 and the bus 404 in the flexible interconnection device. The second load switch 402 is respectively connected to the outgoing cable 107 of the monitoring device 100 and the bus 404 in the flexible interconnection device, and is used to switch on or off the connection between the outgoing end of the monitoring device 100 and the bus 404 in the flexible interconnection device.

[0070] The converter 403 is used to convert the direct current at the input end of the flexible interconnection device 400 into alternating current.

[0071] It should be noted that the connection between the incoming line end of the monitoring device 100 and the bus 404 in the flexible interconnection device is controlled by closing the first load switch 401, and the incoming line end of the monitoring device 100 is disconnected from the bus 404 in the flexible interconnection device by opening the first load switch 401. The connection between the outgoing line end of the monitoring device 100 and the bus 404 in the flexible interconnection device is controlled by closing the second load switch 402, and the disconnection between the outgoing line end of the monitoring device 100 and the bus 404 in the flexible interconnection device is controlled by opening the second load switch 402.

[0072] The first load switch 401 at the outlet of the flexible interconnection device 400 is opened, so that the outlet cable of the flexible interconnection device 400 loses pressure and is powered off, then the incoming cable 106 of the monitoring device 100 is connected to the first load switch 401 of the flexible interconnection device 400, and then the second load switch 402 of the flexible interconnection device 400 is closed, so that the monitoring device 100 is connected to the flexible interconnection device 400, so that the monitoring and operation scheduling of the flexible interconnection device 400 can be realized. Only the incoming cable 106 of the monitoring device 100 needs to be connected, and the power outage time is short, which improves the user experience.

[0073] In an exemplary embodiment, Figure 4 As shown, a control method for a monitoring device is provided, and the method is applied to Figure 2 The monitoring device 100 in FIG. 1 is taken as an example to illustrate the method, which includes the following steps S101 to S102.

[0074] Step S101 , collecting the DC voltage of the bus, and collecting the incoming DC current and outgoing DC current of the flexible interconnection device.

[0075] Among them, the busbar is Figure 2 The busbar 105 in the flexible interconnection device is as follows Figure 1400 in, DC voltage transformer such as Figure 2 The DC voltage transformer 101 in the input DC current transformer is as follows Figure 2 The incoming DC current transformer 102 and the outgoing DC current transformer are as follows Figure 2 The outgoing DC current transformer 103, the measuring device is as follows Figure 2 The measuring device 104 in FIG.

[0076] Optionally, the DC voltage of the bus 105 in the monitoring device 100 is measured by the DC voltage transformer 101, the DC current at the outlet end of the flexible interconnection device 400 is measured by the incoming DC current transformer 102 to obtain the incoming DC current, the DC current at the incoming end of the flexible interconnection device 400 is measured by the outgoing DC current transformer 103 to obtain the outgoing DC current, and the DC voltage, the incoming DC current and the outgoing DC current are collected by the measuring device 104.

[0077] Step S102: monitoring and scheduling the operation of the flexible interconnection device according to the DC voltage, the incoming DC current, and the outgoing DC current.

[0078] Among them, the operation scheduling methods may include first operation scheduling, second operation scheduling and third operation scheduling.

[0079] Optionally, if the DC voltage is greater than the DC voltage limit within a time period, the measuring device 104 performs a first operation scheduling on the flexible interconnection device 400; if the incoming DC current is greater than the incoming DC current limit within a time period, the measuring device 104 performs a second operation scheduling on the flexible interconnection device 400; if the outgoing DC current is greater than the outgoing DC current limit within a time period, the measuring device 104 performs a third operation scheduling on the flexible interconnection device 400.

[0080] In the control method of the above-mentioned monitoring device, the DC voltage of the bus 105 in the monitoring device 100 is collected, the DC current at the outgoing end of the flexible interconnection device 400 is collected to obtain the incoming DC current, the DC current at the incoming end of the flexible interconnection device 400 is collected to obtain the outgoing DC current, the DC current is compared with the DC current threshold, if the DC current is greater than the DC current threshold within a time period, the first operation scheduling is performed on the flexible interconnection device 400, the incoming DC voltage is compared with the incoming DC voltage threshold, if the incoming DC voltage is greater than the incoming DC voltage threshold within a time period, the second operation scheduling is performed on the flexible interconnection device 400, the outgoing DC voltage is compared with the outgoing DC voltage threshold, if the outgoing DC voltage is greater than the outgoing DC voltage threshold within a time period, the second operation scheduling is performed on the flexible interconnection device 400, the operating state can be automatically detected, and the operation scheduling of the flexible interconnection device is performed, so that the flexible interconnection device can adapt to complex and changeable operating environments.

[0081] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0082] In an exemplary embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as shown in FIG. Figure 5 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store current or voltage data. The input / output interface of the computer device is used to exchange information between the processor and the flexible interconnection device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a control method of a monitoring device is implemented.

[0083] Those skilled in the art will understand that Figure 5 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0084] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0085] Collect the DC voltage of the busbar, and collect the incoming DC current and outgoing DC current of the flexible interconnection device.

[0086] The flexible interconnection device is monitored and its operation is scheduled according to the DC voltage, incoming DC current and outgoing DC current.

[0087] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0088] Collect the DC voltage of the busbar, and collect the incoming DC current and outgoing DC current of the flexible interconnection device.

[0089] The flexible interconnection device is monitored and its operation is scheduled according to the DC voltage, incoming DC current and outgoing DC current.

[0090] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0091] Collect the DC voltage of the busbar, and collect the incoming DC current and outgoing DC current of the flexible interconnection device.

[0092] The flexible interconnection device is monitored and its operation is scheduled according to the DC voltage, incoming DC current and outgoing DC current.

[0093] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0094] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0095] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0096] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A monitoring device, characterized in that: The monitoring device comprises: A DC voltage transformer, a first end of which is connected to a busbar and a second end of which is grounded, and is used to measure the DC voltage of the busbar; An incoming DC current transformer, a first end of which is connected to the busbar, and a second end of which is connected to the flexible interconnection device via an incoming cable, for measuring the incoming DC current of the flexible interconnection device; an outgoing DC current transformer, wherein a first end of the outgoing DC current transformer is connected to the busbar, and a second end of the outgoing DC current transformer is connected to the flexible interconnection device through an outgoing cable, and is used to measure an outgoing DC current of the flexible interconnection device; A measuring device, wherein the measuring device is connected to the third end of the DC voltage transformer, the third end of the incoming DC current transformer and the third end of the outgoing DC current transformer, and is used to collect the DC voltage, the incoming DC current and the outgoing DC current, and is also used to monitor and schedule the operation of the flexible interconnection device according to the DC voltage, the incoming DC current and the outgoing DC current.

2. The monitoring device according to claim 1, characterized in that: The monitoring device also includes: An incoming line protection DC current transformer, one end of which is connected to the incoming line DC current transformer, and the other end of which is connected to the flexible interconnection device through the incoming line cable, for generating a first fault current; An outgoing line protection DC current transformer, one end of which is connected to the outgoing line DC current transformer, and the other end of which is connected to the flexible interconnection device through the outgoing line cable, for generating a second fault current.

3. The monitoring device according to claim 1, characterized in that: The monitoring device also includes: An incoming line switch, which is installed between the incoming line DC current transformer and the busbar and is used to open or close the connection between the monitoring device and the outgoing line terminal of the flexible interconnection device; An outgoing line switch is installed between the outgoing line DC current transformer and the busbar, and is used to switch on or off the connection between the monitoring device and the incoming line end of the flexible interconnection device.

4. The monitoring device according to any one of claims 1 to 3, characterized in that: The monitoring device also includes: An Ethernet switch is communicatively connected to the measuring device and is used to establish data interaction between the measuring device and an external device.

5. A monitoring system, characterized in that: The system comprises: Flexible interconnection device; A monitoring device, wherein the monitoring device is connected to the flexible interconnection device, and the monitoring device is the monitoring device according to any one of claims 1 to 4.

6. The monitoring system according to claim 5, characterized in that: The flexible interconnection device comprises: Busbars in flexible interconnection devices; A converter, wherein the converter is connected to an outgoing cable of the monitoring device; A first load switch, connected to the incoming cable of the monitoring device and the busbar in the flexible interconnection device, respectively, for switching on or off the connection between the incoming end of the monitoring device and the busbar in the flexible interconnection device; The second load switch is connected to the outgoing cable of the monitoring device and the busbar in the flexible interconnection device respectively, and is used to open or close the connection between the outgoing end of the monitoring device and the busbar in the flexible interconnection device.

7. A control method for a monitoring device, characterized in that: Applied to the monitoring device according to any one of claims 1 to 4, the method comprises: Collect the DC voltage of the busbar, and collect the incoming DC current and outgoing DC current of the flexible interconnection device; The flexible interconnection device is monitored and its operation is scheduled according to the DC voltage, the incoming DC current and the outgoing DC current.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to claim 7 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to claim 7 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to claim 7 are implemented.

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