Standby module monitoring system and monitoring method for electronic transformer

Abstract

The invention provides a standby module monitoring system and a standby module monitoring method for an electronic transformer. The monitoring system comprises a monitoring host; the optical fiber channel switching device is used for switching among a plurality of optical fiber channels, each optical fiber channel corresponds to a corresponding standby module, and the monitoring host is connected with the standby modules through the optical fiber channel switching device and communicates with the standby modules so as to monitor the standby modules. The monitoring host and the fiber channel switching device work cooperatively and cooperatively to monitor all standby modules in a station, the working states of the standby modules are checked in a regular round robin or single-channel mode, the available conditions of the standby modules are mastered, when the standby modules are found to be abnormal, the maintenance time can be reasonably arranged according to a maintenance plan in the station, and the maintenance efficiency is improved. The reliability of a measurement system is improved, and the availability of a direct-current system is improved.

Description

Technical Field

[0001] The present application relates to the field of optoelectronic instruments, and in particular to a monitoring system and a monitoring method for a spare module of an electronic mutual inductor. Background Art

[0002] The DC electronic current transformer senses the primary current through a shunt or a low-power coil, converts the current signal into a small voltage signal, samples it locally on the high-voltage side through a remote module, sends the sampled data to the merging unit through optical fiber, and receives laser power from the remote module, thereby realizing power supply on the high-voltage side.

[0003] The remote modules of the DC field measurement points of UHV DC projects generally adopt a 3+1 configuration, with 3 in use and 1 in reserve. Figure 1 As shown, the three running modules (numbered 1, 2, and 3) are connected to three merging units respectively, and the spare remote module (numbered 4) is connected to the optical fiber on the high-voltage side, and the other end is connected to the B-set merging unit cabinet. When the modules and optical fiber loops in operation on site fail, if the B set fails, the spare optical fiber is directly connected to the B-set merging unit; if the A or C set fails, the spare module is connected to the A or C set merging unit through an optical fiber jumper.

[0004] However, in the actual operation of the DC system, the running modules are always in working state, while the standby modules are always in non-working state. Only during the annual maintenance will the standby module be connected to the operating merging unit for inspection. However, in daily use, when an abnormality occurs in the operating module during actual operation, the merging unit can issue an alarm in time, and the operation and maintenance personnel can handle the fault in time; however, abnormalities in the standby module or abnormalities in the optical fiber circuit of the standby module cannot be monitored normally. If an abnormality occurs in the main channel and the standby module is also unavailable, an emergency power outage is required, which will affect the reliable operation of the DC system.

[0005] In recent years, in order to monitor the backup modules, UHV projects have chosen to configure D sets of merging units in the DC field for monitoring the backup modules. However, this method requires the addition of panel cabinets and merging unit devices. Moreover, for the backup modules of the AC field with a larger number of measurement points, since the AC field itself has a large number of merging unit devices, no additional merging units are configured to monitor the backup modules. Therefore, the existing solution has a high monitoring cost, needs to occupy the space of the existing panel cabinet, and the monitoring is incomplete.

[0006] The above information disclosed in the Background section is only for enhancement of understanding of the background of the present application and therefore it may contain information that does not constitute the prior art that is already known to a person of ordinary skill in the art. Summary of the invention

[0007] In order to solve at least one of the above problems, the present application proposes a backup module monitoring system and a monitoring method for an electronic transformer.

[0008] According to the first aspect of the present application, at least one embodiment of the present application provides a backup module monitoring system for an electronic transformer, the monitoring system comprising: a monitoring host; and a fiber optic channel switching device for switching among multiple fiber optic channels, each of the fiber optic channels corresponding to a corresponding backup module, the monitoring host is connected to the backup module through the fiber optic channel switching device, and communicates with the backup module to monitor the backup module.

[0009] For example, in some embodiments of the present application, the monitoring host is used to provide laser energy to enable the backup module to operate and receive feedback data from the backup module.

[0010] For example, in some embodiments of the present application, the feedback data includes a sampling value and typical state information, wherein: the typical state information includes a data reception level and a laser driving current value.

[0011] For example, in some embodiments of the present application, the fiber channel switching device communicates with the monitoring host and switches the fiber channel according to the instruction of the monitoring host to connect to the corresponding backup module.

[0012] According to the second aspect of the present application, at least one embodiment of the present application provides a backup module monitoring method for an electronic transformer, which is executed by the monitoring host of the monitoring system as described in any one of the first aspects, and the monitoring method includes: controlling the fiber channel switching device to be connected to the backup module to be monitored; starting the laser power supply to make the backup module to be monitored work; receiving feedback data from the backup module to be monitored; and determining whether the backup module to be monitored is normal based on the feedback data.

[0013] For example, in some embodiments of the present application, controlling the fiber channel switching device to connect to the backup module to be monitored includes: controlling the fiber channel switching device to connect to the backup module in a round-robin manner or a single-channel manner, wherein: the round-robin manner includes: connecting to the backup modules in sequence; the single-channel manner includes: connecting to a set backup module.

[0014] For example, in some embodiments of the present application, the monitoring method further includes: determining that the standby module to be monitored is abnormal when no feedback data from the standby module to be monitored is received.

[0015] For example, in some embodiments of the present application, the feedback data includes sampling values ​​and typical status information, the typical status information includes data reception levels and laser drive current values, and determining whether the standby module to be monitored is normal based on the feedback data includes: within a first time interval, when the sampling value, the data reception level and the laser drive current value are normal, determining that the standby module to be monitored is normal.

[0016] According to a third aspect of the present application, at least one embodiment of the present application provides an electronic device, including:

[0017] one or more processors; and

[0018] A memory for storing one or more programs;

[0019] When the one or more programs are executed by the one or more processors, the one or more processors execute the method as described in any one of the second aspects.

[0020] According to a fourth aspect of the present application, at least one embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, wherein when the program is executed by a processor, the method described in any one of the second aspects is implemented.

[0021] The present application provides a backup module monitoring system and a monitoring method for an electronic transformer. The monitoring host and a fiber channel switching device work in coordination to monitor all backup modules in a station. The working status of the backup modules is checked in a regular polling or single-channel manner to understand the availability of the backup modules. When a backup module is found to be abnormal, the maintenance time can be reasonably arranged according to the maintenance plan in the station, thereby improving the reliability of the measurement system and the availability of the DC system.

[0022] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] By describing in detail exemplary embodiments thereof with reference to the accompanying drawings, the above and other objects, features and advantages of the present application will become more apparent. The accompanying drawings described below are only some embodiments of the present application, and are not intended to limit the present application.

[0024] Figure 1 A schematic diagram of the DC field of an existing UHV DC project is shown;

[0025] Figure 2 A schematic diagram showing a backup module monitoring system for an electronic transformer according to an exemplary embodiment;

[0026] Figure 3A flow chart showing a method for monitoring a standby module of an electronic transformer according to an exemplary embodiment is shown;

[0027] Figure 4 An exemplary flow chart of a standby module monitoring method for an electronic transformer is shown;

[0028] Figure 5 A structural diagram of an electronic device provided by the present application is shown. DETAILED DESCRIPTION

[0029] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be comprehensive and complete and will fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted.

[0030] The described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of these specific details, or other modes, components, materials, devices, etc. may be adopted. In these cases, known structures, methods, devices, implementations, materials or operations will not be shown or described in detail.

[0031] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations or steps, nor do they have to be executed in the order described. For example, some operations or steps can be decomposed, and some operations or steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0032] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0033] Those skilled in the art will appreciate that the drawings are merely schematic diagrams of example embodiments, and the modules or processes in the drawings are not necessarily necessary for implementing the present application, and therefore cannot be used to limit the scope of protection of the present application.

[0034] Figure 2 A schematic diagram of a backup module monitoring system for an electronic transformer is shown according to an exemplary embodiment.

[0035] like Figure 2 As shown, the spare module monitoring system for electronic transformers includes a monitoring host and a fiber channel switching device. The spare module monitoring system for electronic transformers is used to monitor spare modules. All spare modules are connected to the fiber channel switching device, which is then connected to the monitoring host. The number of fiber channel switching devices can be configured as needed according to the number of spare modules. Figure 2 As shown, each measuring point includes two backup modules, each backup module is connected to a fiber channel switching device, and then connected to a monitoring host. The monitoring host communicates with the backup modules of the converter station measuring points in a round-robin manner or a single-channel manner to monitor the backup modules of all measuring points in the entire station.

[0036] According to an exemplary embodiment, the monitoring host is used to provide laser energy to enable the standby module to work. If the standby module works normally, the monitoring host can receive feedback data from the standby module.

[0037] According to some embodiments, the feedback data includes a sample value and typical state information. The typical state information includes a data reception level and a laser driving current value.

[0038] According to some embodiments, a 16-channel or 32-channel fiber channel switching device may be selected according to the number of spare modules, or a fiber channel switching device with other numbers of channels may be selected, but the present application is not limited thereto.

[0039] According to some embodiments, the monitoring host can access multiple fiber channel switching devices, and use a pair of multimode optical fibers to connect to each fiber channel switching device, communicate with the fiber channel switching device through a communication line of the multimode optical fiber, and the fiber channel switching device switches among multiple fiber channels by receiving instructions from the monitoring host, and each fiber channel corresponds to a corresponding standby module. The fiber channel switching device switches the fiber channel according to the instructions of the monitoring host to achieve the switching of the connected standby module.

[0040] Figure 3 A flow chart of a method for monitoring a standby module of an electronic transformer according to an exemplary embodiment is shown.

[0041] like Figure 3 As shown, the monitoring method includes steps S301 to S304.

[0042] In step S301, the fiber channel switching device is controlled to connect to the standby module to be monitored.

[0043] According to the example embodiment, the spare modules of the measuring point of the converter station are numbered, and the channel position of the optical fiber channel switching device is matched to the position of the spare module of the measuring point one by one. And it is determined whether to perform a round-robin monitoring mode or a single-channel monitoring mode. Round-robin monitoring refers to controlling the optical fiber channel switching device to connect with the spare modules in sequence, and executing a monitoring method for each spare module in sequence; single-channel monitoring refers to controlling the optical fiber channel switching device to connect with the set spare module, and executing a monitoring method for the set spare module. For example, the relationship between the channel position of the optical fiber channel switching device and the position of the spare module of the measuring point is shown in Table 1 below:

[0044] Serial number Spare module location Fiber switching channel host and channel location 1 Measuring point 1 spare module 1 Fibre Channel Switch 1 Channel 1 2 Measuring point 1 spare module 2 Fibre Channel Switch 1 Channel 2 3 Measuring point 2 spare module 1 Fibre Channel Switch 1 Channel 3 …… …… …… m Measuring point X spare module Y Fibre Channel Switch M Channel N

[0045] Table 1

[0046] According to an example embodiment, when a round-robin method is used, the monitoring host selects a corresponding instruction to send to the fiber channel switching device and the standby module connected to the measuring point according to the timing or manual start device round-robin, according to the sequence number. Figure 4 As shown, after the round robin is started, the sequence number 1 round robin begins, and the monitoring host sends the "sequence number 1 inspection command" to the fiber channel switching device 1 through the communication cable. The fiber channel switching device connects the two optical fibers of the monitoring host with the two optical fibers of the backup module 1 of the measuring point 1 through the internal optical switching module.

[0047] According to an example embodiment, Figure 4 As shown in the figure, when the single-channel mode is adopted, the monitoring host selects single-channel monitoring, enters the corresponding spare module serial number, and sends the corresponding instruction to the fiber channel switching device according to the serial number selection, and connects to the spare module of the measuring point. The fiber channel switching device connects the two optical fibers of the monitoring host with the two optical fibers of the corresponding spare module through the internal optical switching module.

[0048] In step S302, the laser energy supply is started to make the standby module to be monitored work.

[0049] According to an exemplary embodiment, the monitoring host starts laser energy supply and applies a certain optical power of driving current to the standby module to be monitored to check whether the standby module to be monitored can work normally.

[0050] In step S303, feedback data of the standby module to be monitored is received.

[0051] According to an example embodiment, the standby module to be monitored returns feedback data to the monitoring host after receiving the optical power of the driving current provided by the monitoring host.

[0052] In step S304, it is determined whether the standby module to be monitored is normal according to the feedback data.

[0053] According to an example embodiment, Figure 4As shown, if the standby module to be monitored works normally, the monitoring host will be able to receive feedback data of the standby module to be monitored. The feedback data includes sampling values ​​and typical status information, and the typical status information includes data receiving level and laser driving current value. In the first time interval, if the monitoring host does not receive data verification abnormality statistics and data invalid statistics of the channel, that is, if the sampling value, data receiving level and laser driving current value are normal, it is determined that the standby module to be monitored is normal, and the effective value of the sampling value, data receiving level and laser driving current value are recorded, and the standby module inspection is recorded to be normal, and then the laser function is turned off.

[0054] According to some embodiments, when the monitoring host does not receive feedback data from the backup module to be monitored, the monitoring host attempts to apply optical power for a second time. If the backup module to be monitored still continues to fail to work, that is, the monitoring host still has not received feedback data from the backup module to be monitored, then the backup module to be monitored is judged to be abnormal, the abnormality of the backup module to be monitored is recorded, and the laser power supply is turned off.

[0055] For example, in this example, the fiber channel switching device includes 32 channels, that is, one fiber channel switching device can connect to 32 backup modules, that is, it can switch 32 fiber channels. When the sequence number 33 is rotated, the monitoring host sends the "sequence number 33 inspection instruction" to the fiber channel switching device 2, and connects to the backup module of a certain measuring point in the station through the optical switching module of the fiber channel switching device 2, and starts the relevant inspection work.

[0056] According to an exemplary embodiment, if monitoring is performed in a round-robin manner, the next standby module is monitored until all standby modules are checked. Figure 4 As shown, when the monitoring of the backup module 1 of the measuring point 1 is completed, the monitoring of the backup module 2 of the measuring point 1 is started.

[0057] According to an example embodiment, Figure 4 As shown, if a single-channel mode is used for monitoring, after the monitoring of the set standby module is completed, the monitoring host saves the inspection result and the monitoring host enters the standby state.

[0058] According to some embodiments, Figure 4As shown in the figure, when all the spare modules are checked, the monitoring host generates an inspection report for the day. The content of the inspection report includes the monitoring data of the normal spare modules and the abnormal spare modules. If the spare module is normal, record the sampling value, data receiving level and laser driving current of the spare module; if the spare module is abnormal, it means that the spare module is working abnormally to remind the operator to handle it. The inspection results can be output through the network port of the monitoring host. The monitoring host can also check a spare module separately. Just enter the serial number of the spare module to be monitored to check the operation of a single spare module. After completing the monitoring, you can save the inspection report.

[0059] According to some embodiments, the time for the monitoring host to execute the round-robin mode can be started at a fixed time, for example, it is set to start at 8 am every day, and the monitoring host enters standby after the round-robin. The interval time for the second round-robin can also be set, for example, it is set to be a round-robin every 7 days. The round-robin can also be started manually. In manual mode, press the start round-robin control word, and the monitoring host completes a complete monitoring.

[0060] The present application provides a backup module monitoring system and a monitoring method for an electronic transformer. The monitoring host and a fiber channel switching device work in coordination to monitor all backup modules in a station. The working status of the backup modules is checked in a regular polling or single-channel manner to understand the availability of the backup modules. When a backup module is found to be abnormal, the maintenance time can be reasonably arranged according to the maintenance plan in the station, thereby improving the reliability of the measurement system and the availability of the DC system.

[0061] Figure 5 A structural diagram of an electronic device provided by the present application is shown.

[0062] See also Figure 5 , Figure 5 An electronic device is provided, comprising a processor and a memory. The memory stores computer instructions. When the computer instructions are executed by the processor, the processor executes the computer instructions to achieve the following Figure 3 The method and refinement scheme shown.

[0063] It should be understood that the above-mentioned device embodiments are only illustrative, and the device disclosed in the present application can also be implemented in other ways. For example, the division of units or modules in the above-mentioned embodiments is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units, modules or components can be combined, or can be integrated into another system, or some features can be ignored or not executed.

[0064] In addition, unless otherwise specified, each functional unit or module in each embodiment of the present application may be integrated into one unit or module, or each unit or module may exist physically separately, or two or more units or modules may be integrated together. The above-mentioned integrated unit or module may be implemented in the form of hardware or in the form of a software program module.

[0065] If the integrated unit or module is implemented in the form of hardware, the hardware may be a digital circuit, an analog circuit, etc. The physical implementation of the hardware structure includes but is not limited to transistors, memristors, etc. Unless otherwise specified, the processor or chip may be any appropriate hardware processor, such as CPU, GPU, FPGA, DSP, and ASIC, etc. Unless otherwise specified, the on-chip cache, off-chip memory, and storage may be any appropriate magnetic storage medium or magneto-optical storage medium, such as Resistive Random Access Memory (RRAM), Dynamic Random Access Memory (DRAM), Static Random Access Memory (SRAM), Enhanced Dynamic Random Access Memory (EDRAM), High-Bandwidth Memory (HBM), Hybrid Memory Cube (HMC), etc.

[0066] If the integrated unit or module is implemented in the form of a software program module and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a memory, including a number of instructions to enable a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the various embodiments of the present disclosure. The aforementioned memory includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk and other media that can store program codes.

[0067] The present application also provides a non-transitory computer storage medium storing a computer program. When the computer program is executed by multiple processors, the processors execute the following Figure 3 The method and refinement scheme shown.

[0068] It should be clearly understood that the present application describes how to form and use specific examples, but the present application is not limited to any details of these examples. On the contrary, based on the teaching of the content disclosed in the present application, these principles can be applied to many other embodiments.

[0069] In addition, it should be noted that the above figures are only schematic illustrations of the processes included in the method according to the exemplary embodiments of the present application, and are not intended to be limiting. It is easy to understand that the processes shown in the above figures do not indicate or limit the time sequence of these processes. In addition, it is also easy to understand that these processes can be performed synchronously or asynchronously, for example, in multiple modules.

[0070] The exemplary embodiments of the present application are specifically shown and described above. It should be understood that the present application is not limited to the detailed structures, configurations or implementations described herein; on the contrary, the present application is intended to cover various modifications and equivalent configurations included in the spirit and scope of the appended claims.

Claims

1. A standby module monitoring system for an electronic transformer, characterized in that: The monitoring system comprises: Monitor hosts; and The fiber channel switching device is used to switch among multiple fiber channels, each of which corresponds to a corresponding standby module. The monitoring host is connected to the standby module through the fiber channel switching device and communicates with the standby module to monitor the standby module.

2. The monitoring system according to claim 1, characterized in that: The monitoring host is used to provide laser energy to enable the standby module to work and receive feedback data from the standby module.

3. The monitoring system according to claim 2, characterized in that: The feedback data includes sampled values ​​and typical status information, wherein: The typical status information includes a data reception level and a laser driving current value.

4. The monitoring system according to claim 1, characterized in that: The optical fiber channel switching device communicates with the monitoring host and switches the optical fiber channel according to the instruction of the monitoring host to connect the corresponding standby module.

5. A method for monitoring a standby module of an electronic transformer, characterized in that: Executed by the monitoring host of the monitoring system according to any one of claims 1 to 4, the monitoring method comprises: Controlling the fiber channel switching device to connect to the standby module to be monitored; Starting laser energy supply to make the standby module to be monitored work; Receiving feedback data from the standby module to be monitored; Determine whether the standby module to be monitored is normal according to the feedback data.

6. The monitoring method according to claim 5, characterized in that: The controlling the fiber channel switching device to be connected to the standby module to be monitored includes: The fiber channel switching device is controlled to be connected to the standby module in a round-robin manner or a single-channel manner, wherein: The round-robin method includes: connecting with the standby modules in sequence; The single-channel mode includes: connecting with a set standby module.

7. The monitoring method according to claim 5, characterized in that: The monitoring method further comprises: In the case where no feedback data from the standby module to be monitored is received, it is determined that the standby module to be monitored is abnormal.

8. The monitoring method according to claim 5, characterized in that: The feedback data includes a sampling value and typical state information, the typical state information includes a data receiving level and a laser driving current value, and determining whether the standby module to be monitored is normal according to the feedback data includes: In the first time interval, when the sampling value, the data receiving level and the laser driving current value are normal, it is determined that the standby module to be monitored is normal.

9. An electronic device, characterized in that: include: one or more processors; as well as A memory for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors execute the method according to any one of claims 5 to 8.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method according to any one of claims 5 to 8 is implemented.

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