Maintenance management system for power receiving and transforming equipment, maintenance management method for power receiving and transforming equipment, and maintenance management program.

Abstract

To provide a maintenance management system for power receiving and transforming equipment that can appropriately provide information on maintenance according to the status of the power receiving and transforming equipment, a maintenance management method for the power receiving and transforming equipment, and a maintenance management program.SOLUTION: A maintenance management system for power receiving and transforming equipment includes a collection unit and a provision unit. The collection unit collects measurement data of the power receiving and transforming equipment from a plurality of sensors provided in the power receiving and transforming equipment. The provision unit provides information related to maintenance of the power receiving and transforming equipment on the basis of the measurement data.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] Embodiments of the present invention relate to a maintenance management system for power receiving and transforming equipment, a maintenance management method for power receiving and transforming equipment, and a maintenance management program.

Background Art

[0002] Power receiving and transforming equipment is required to operate continuously and stably. Therefore, in order to maintain the power receiving and transforming equipment in a highly reliable state, maintenance inspections are carried out at regular intervals. On the other hand, the maintenance inspection cycle does not take into account the installation environment and deterioration state of the power receiving and transforming equipment, and the inspection timing is not necessarily appropriate.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The problem to be solved by the present invention is to provide a maintenance management system for power receiving and transforming equipment, a maintenance management method for power receiving and transforming equipment, and a maintenance management program that can appropriately provide information related to maintenance according to the state of the power receiving and transforming equipment. [[ID=*37]]

Means for Solving the Problems

[0005] According to an embodiment of the present invention, a maintenance management system for power receiving and transforming equipment includes a collection unit and a provision unit. The collection unit collects measurement data of the power receiving and transforming equipment from a plurality of sensors provided on the power receiving and transforming equipment. The provision unit provides information related to the maintenance of the power receiving and transforming equipment based on the measurement data.

Brief Description of the Drawings

[0006] [Figure 1] Schematic diagram showing a maintenance management system according to the first embodiment. Note: There seems to be a small error in the original text where the tag for "

課題を解決するための手段

Means for Solving the Problems

Means for Solving the Problem

[0007] The following describes the maintenance management system, maintenance management method, and maintenance management program for the power receiving and transforming equipment according to the embodiment, with reference to the drawings. (First Embodiment) Figure 1 is a schematic diagram showing the maintenance management system 1 according to the first embodiment. The maintenance management system 1 comprises a power receiving and transforming equipment 10 to be monitored and a maintenance management server 20. The power receiving and transforming equipment 10 may include multiple electrical devices 11, such as switchgears and uninterruptible power supplies. Each electrical device 11 is provided with a measuring device 12. In other embodiments, one measuring device 12 may measure the status of multiple electrical devices 11, or multiple measuring devices 12 may be provided on one electrical device 11. The power receiving and transforming equipment 10 is also provided with at least one communication device 13. This device can be attached to the power receiving and transforming equipment 10 and measures the status of the power receiving and transforming equipment 10 using various sensors and transmits the measurement data to the maintenance management server 20. Based on the measurement data received from the power receiving and transforming equipment 10, the maintenance management server 20 monitors the fault and deterioration status of the power receiving and transforming equipment 10. The maintenance management server 20 may monitor multiple power receiving and transforming equipment 10. Each power receiving and transforming equipment 10 is assigned a maintenance person M.

[0008] Figure 2 is a schematic block diagram showing the configuration of the maintenance management system 1 according to the first embodiment. The measuring device 12 includes one or more sensors 121, a microcomputer 122, and a communication unit 123. Examples of sensors 121 include a temperature sensor, a humidity sensor, a contamination sensor, an acoustic sensor, an odor sensor, and a partial discharge sensor. The temperature sensor measures the temperature or ambient temperature of the power receiving and transforming equipment 10. The humidity sensor measures the relative humidity of the atmosphere of the power receiving and transforming equipment 10. The contamination sensor measures the degree of contamination of the power receiving and transforming equipment 10 due to dust, moisture, etc. For example, a quartz crystal microbalance can be used as a contamination sensor. The acoustic sensor measures the sound generated from the power receiving and transforming equipment 10. The odor sensor detects odors in the atmosphere of the power receiving and transforming equipment 10. For example, the odor sensor measures the concentration of odorous substances in the atmosphere of the power receiving and transforming equipment 10. Examples of odor sensors include sensors using semiconductors whose resistance changes in response to odorous substances. The partial discharge sensor measures electromagnetic waves generated by partial discharge of the power receiving and transforming equipment 10. Examples of partial discharge sensors include transient ground voltage (TEV) sensors. Each sensor 121 has an AD converter and outputs measurement data as a digital signal.

[0009] The microcomputer 122 acquires measurement data from each sensor 121 and transmits it to the maintenance management server 20 via the communication unit 123. The microcomputer 122 may transmit the acquired measurement data via streaming communication, or it may transmit the accumulated measurement data at regular intervals. The transmission cycle of the measurement data may differ depending on the type of sensor 121. The communication unit 123 transmits the measurement data from the sensor 121 to the communication device 13, which is connected by wire or wirelessly.

[0010] The communication device 13 transmits measurement data received from multiple measuring devices 12 to the maintenance management server 20 via a wide-area communication network such as the Internet. The maintenance management server 20 stores the IDs of the power receiving and transforming equipment 10 and the communication device 13 in association, so it can identify which power receiving and transforming equipment 10 the received measurement data belongs to based on the ID of the communication device 13 that received the measurement data.

[0011] The maintenance management server 20 includes an equipment information storage unit 21, a collection unit 22, a measurement data storage unit 23 (database), a determination unit 24, and a provision unit 25. The equipment information storage unit 21 stores, for each power receiving and transforming equipment 10, the ID of the power receiving and transforming equipment 10, the ID of the measuring device 12 (e.g., IP address), the contact information of the maintenance person M (e.g., email address), and the inspection schedule.

[0012] The collection unit 22 receives measurement data from the power receiving and transforming equipment 10 via the communication device 13. The collection unit 22 identifies the power receiving and transforming equipment 10 to which the received measurement data pertains by referring to the ID of the communication device 13 that is the source of the measurement data stored in the equipment information storage unit 21. The collection unit 22 records the received measurement data in the measurement data storage unit 23, associating it with the time and the ID of the power receiving and transforming equipment 10.

[0013] The determination unit 24 determines whether or not there is a fault in the substation equipment 10 based on the measurement data of the substation equipment 10 at predetermined intervals (for example, every hour). The determination unit 24 also determines the inspection items for the substation equipment 10 based on the measurement data of the substation equipment 10 before the self-inspection by the maintenance personnel M. The inspection items may include items for which replacement of parts should be considered. The determination unit 24 also determines a renewal proposal based on the substation equipment 10 before the periodic inspection date indicated by the inspection schedule stored in the equipment information storage unit 21 (for example, one month prior).

[0014] The supply unit 25 notifies the maintenance personnel of the occurrence of a malfunction if the determination unit 24 determines that a malfunction has occurred. The supply unit 25 also notifies the maintenance personnel M of the inspection policy and renewal proposal determined by the determination unit 24.

[0015] Figure 3 is a flowchart showing the failure determination process by the maintenance management server 20 according to the first embodiment. The maintenance management server 20 executes the following failure determination process at a predetermined cycle. As described above, every time the maintenance management server 20 receives measurement data from the power receiving and transforming facility 10, it sequentially records the measurement data in the measurement data storage unit 23.

[0016] When the maintenance management server 20 starts the failure determination process, the determination unit 24 reads out the measurement data associated with the target power receiving and transforming facility 10 and collected during the period from the time when the previous failure determination process was executed to the current time among the measurement data stored in the measurement data storage unit 23 (step S1). The determination unit 24 determines whether there is a failure in the power receiving and transforming facility 10 based on the read measurement data. For example, the determination unit 24 determines whether partial discharge has occurred in the power receiving and transforming facility 10, whether the acoustic level has exceeded a predetermined threshold, and whether the concentration of odor substances has exceeded a predetermined threshold based on the measurement data (step S2). That is, the determination unit 24 determines whether any of partial discharge, abnormal noise, and abnormal odor has occurred. When it is determined that any of partial discharge, abnormal noise, and abnormal odor has occurred in the power receiving and transforming facility 10 (step S2: YES), the providing unit 25 reads out the contact information of the maintenance person M in charge of the power receiving and transforming facility 10 from the facility information storage unit 21, and transmits a notification indicating that a failure has occurred in the power receiving and transforming facility 10 and the type of the failure (step S3). On the other hand, when it is determined that none of partial discharge, abnormal noise, and abnormal odor has occurred in the power receiving and transforming facility 10 (step S2: NO), the providing unit 25 ends the process without transmitting a notification to the maintenance person M.

[0017] Figure 4 is a flowchart showing the inspection item output process by the maintenance management server 20 according to the first embodiment. When the maintenance person M performs the self-inspection of the power receiving and transforming facility 10, the maintenance person M transmits an output instruction for inspection items to the maintenance management server 20. When the maintenance management server 20 receives the output instruction for inspection items from the maintenance person M, it executes the following inspection item output process.

[0018] When the maintenance management server 20 starts the inspection item output process, the determination unit 24 reads out the measurement data stored in the measurement data storage unit 23 that is associated with the target power receiving and transforming equipment 10 and collected during the period from the previous inspection date to the current time (step S21). The determination unit 24 determines the state of the power receiving and transforming equipment 10 based on the read measurement data. First, the determination unit 24 determines whether the atmosphere of the power receiving and transforming equipment 10 is within the predetermined appropriate ranges of temperature and humidity based on the measurement data related to the temperature and humidity of the atmosphere of the power receiving and transforming equipment 10 (step S22). At this time, the determination unit 24 may determine whether all of the measurement data from the previous inspection date to the current time is within the appropriate range, or may determine whether the proportion of the measurement data within the appropriate range is not less than a threshold value.

[0019] When it is determined that the atmosphere of the power receiving and transforming equipment 10 is within the predetermined appropriate ranges of temperature and humidity (step S22: YES), the determination unit 24 decides to present, as the inspection items to be presented to the maintenance staff, inspection items consisting of simple visual inspections. The providing unit 25 reads out the contact information of the maintenance staff for the power receiving and transforming equipment 10 from the equipment information storage unit 21 and transmits the inspection items determined by the determination unit 24 (step S23).

[0020] <​​​​If the determination unit 24 determines that the degree of contamination of the power receiving and transforming equipment 10 exceeds a predetermined threshold (step S24: YES), the determination unit 24 decides to present inspection items to the maintenance personnel, including detailed inspections such as removing the cover to check the condition of the equipment. The provision unit 25 reads the contact information of the maintenance personnel for the power receiving and transforming equipment 10 from the equipment information storage unit 21 and transmits the inspection items determined by the determination unit 24 (step S26). This allows the power receiving and transforming equipment 10 to present inspection items according to its condition for self-inspection.

[0022] Figure 5 is a flowchart showing the renewal proposal process by the maintenance management server 20 according to the first embodiment. The maintenance management server 20 executes the renewal proposal process shown below on a predetermined date before the scheduled inspection date, which is stored in the equipment information storage unit 21.

[0023] When the maintenance management server 20 starts the renewal proposal process, the determination unit 24 reads out the measurement data stored in the measurement data storage unit 23 that is associated with the target substation equipment 10 and was collected during the period from the last periodic inspection date to the present time (step S41). Based on the read measurement data, the determination unit 24 determines the status of the substation equipment 10. First, based on the measurement data relating to the temperature and humidity of the atmosphere of the substation equipment 10, the determination unit 24 determines whether or not the atmosphere of the substation equipment 10 is within the predetermined appropriate range of temperature and humidity (step S42).

[0024] If the system determines that the atmosphere of the power receiving and transforming equipment 10 is within the predetermined range of temperature and humidity (Step S42: YES), the determination unit 24 decides to propose the renewal of parts of the electrical equipment 11 as a renewal plan to be presented to the maintenance personnel. The provision unit 25 reads the contact information of the maintenance personnel of the power receiving and transforming equipment 10 from the equipment information storage unit 21 and transmits the renewal plan determined by the determination unit 24 (Step S43).

[0025] If the system determines that the atmosphere of the power receiving and transforming equipment 10 is not within the predetermined range of temperature and humidity (Step S42: NO), the determination unit 24 determines whether the power receiving and transforming equipment 10 is prone to discharge based on measurement data related to partial discharge of the power receiving and transforming equipment 10 (Step S44). For example, the determination unit 24 determines whether the frequency of partial discharge exceeds a predetermined threshold. If the system determines that the power receiving and transforming equipment 10 is not prone to discharge (Step S42: NO), the determination unit 24 decides to propose the renewal of electrical equipment 11 components as a renewal plan to be presented to the maintenance personnel. The provision unit 25 reads the contact information of the maintenance personnel for the power receiving and transforming equipment 10 from the equipment information storage unit 21 and transmits the renewal plan determined by the determination unit 24 (Step S43).

[0026] If the substation equipment 10 is determined to be prone to discharge (Step S42: YES), the determination unit 24 determines, based on the measurement data related to the partial discharge, whether the partial discharge is occurring in the entire substation equipment 10 or in some of the electrical equipment 11 (Step S45). If the determination unit 24 determines that the partial discharge is occurring in some of the electrical equipment 11 of the substation equipment 10 (Step S45: partial), it decides to propose the renewal of the electrical equipment 11 experiencing the partial discharge as a renewal plan to be presented to the maintenance personnel. The provision unit 25 reads the contact information of the maintenance personnel for the substation equipment 10 from the equipment information storage unit 21 and transmits the renewal plan determined by the determination unit 24 (Step S46).

[0027] If the determination unit 24 determines that the partial discharge is occurring from the entire power receiving and transforming equipment 10 (step S45: entire equipment), it decides to propose a renewal of the entire power receiving and transforming equipment 10 as a renewal plan to be presented to the maintenance personnel M. The provision unit 25 reads the contact information of the maintenance personnel M of the power receiving and transforming equipment 10 from the equipment information storage unit 21 and transmits the renewal plan determined by the determination unit 24 (step S47). This allows the substation equipment 10 to present a renewal plan tailored to its current condition before periodic inspections. By presenting a renewal plan before periodic inspections, the maintenance staff member M can propose the renewal to the manager of the substation equipment 10 before the periodic inspection.

[0028] Furthermore, maintenance personnel M can request the maintenance management server 20 to transmit measurement data. In this case, maintenance personnel M sends a transmission request to the maintenance management server 20 that includes the ID of the target power receiving and transforming equipment 10 and the period for which they want to obtain measurement data. When the maintenance management server 20 receives the transmission request, the provision unit 25 reads the measurement data from the measurement data storage unit 23 that is associated with the ID of the power receiving and transforming equipment 10 included in the transmission request and with the time within the period included in the transmission request, and transmits it to maintenance personnel M. This allows maintenance personnel to obtain measurement data for any power receiving and transforming equipment 10 at any time. Note that the maintenance management server 20 may choose not to transmit measurement data to maintenance personnel M if the equipment information storage unit 21 does not associate the maintenance personnel M who sent the transmission request with the target power receiving and transforming equipment 10.

[0029] As described above, according to the first embodiment, the maintenance management system 1 collects measurement data of the power receiving and transforming equipment 10 from a plurality of sensors 121 installed in the power receiving and transforming equipment 10, and provides information related to the maintenance of the power receiving and transforming equipment 10 based on the collected measurement data. As a result, the maintenance management system 1 can appropriately provide information related to maintenance according to the status of the power receiving and transforming equipment 10.

[0030] Furthermore, according to the first embodiment, the maintenance management system 1 determines whether or not there is a fault in the power receiving and transforming equipment 10 at intervals shorter than the periodic inspection cycle, and sends a fault notification if there is a fault. In this way, by performing monitoring before the periodic inspection, the inspection can be carried out taking the monitoring results into account during the periodic inspection.

[0031] In the first embodiment, the procedure shown in Figure 3-5 is an example of the fault detection process, inspection item output process, and renewal proposal process, but it is not limited to this. For example, in other embodiments, the maintenance management server 20 may perform the fault detection process, inspection item output process, or renewal proposal based on a combination of acceptable partial discharge, abnormal noise, abnormal odor, degree of contamination, and other feature quantities based on temperature and humidity.

[0032] (Second embodiment) Figure 6 is a schematic block diagram showing the configuration of the maintenance management system 1 according to the second embodiment. The maintenance management system 1 according to the second embodiment differs from the first embodiment in the behavior of the maintenance management server 20. Specifically, the maintenance management server 20 according to the second embodiment makes suggestions for self-inspection based on measurement data.

[0033] The maintenance management server 20 according to the second embodiment includes a prediction unit 26 instead of a determination unit 24. The prediction unit 26 estimates the deterioration state of the power receiving and transforming equipment 10 based on measurement data and predicts the progression of deterioration. For example, the prediction unit 26 estimates the amount of change (slope) of the deterioration state by estimating the deterioration state of the power receiving and transforming equipment 10 at each timing of measurement data acquisition, based on the time series of measurement data stored in the measurement data storage unit 23. As a result, the prediction unit 26 can predict the deterioration state at any future timing based on the current deterioration state and the amount of change in the deterioration state.

[0034] Figure 7 is a flowchart showing the inspection date suggestion process by the maintenance management server 20 according to the second embodiment. The maintenance management server 20 performs the fault determination process shown below at predetermined intervals. As described above, the maintenance management server 20 records the measurement data sequentially in the measurement data storage unit 23 each time it receives measurement data from the power receiving and transforming equipment 10.

[0035] When the maintenance management server 20 starts fault detection processing, the prediction unit 26 reads out the measurement data stored in the measurement data storage unit 23 that was collected during the most recent predetermined period (for example, one month) associated with the target power receiving and transforming equipment 10 (step S101). Based on the read measurement data, the prediction unit 26 estimates the deterioration state for each of several acquisition timings of the measurement data (step S102). The prediction unit 26 determines the amount of change in the deterioration state from the estimated deterioration state per unit time and predicts the deterioration state on the next periodic inspection date stored in the equipment information storage unit 21 (step S103).

[0036] The supply unit 25 determines whether the deterioration state on the next periodic inspection date is worse than a predetermined state (step S104). The predetermined state may be, for example, the deterioration state expected during a normal periodic inspection. If the supply unit 25 determines that the deterioration state on the next periodic inspection date is not worse than the predetermined state (step S104: NO), it terminates the process without recommending a self-inspection.

[0037] If the information provider 25 determines that the deterioration state on the next scheduled inspection date is worse than a predetermined state (step S104: YES), it calculates the date on which the deterioration state of the power receiving and transforming equipment 10 will reach the predetermined state, based on the deterioration state progression estimated in step S102, as the recommended inspection date (step S105). The information provider 25 reads the contact information of the maintenance person M for the power receiving and transforming equipment 10 from the equipment information storage unit 21 and sends information recommending that a self-inspection be conducted on the recommended inspection date calculated in step S105 (step S106).

[0038] As described above, the maintenance management system 1 according to the second embodiment predicts the deterioration of the power receiving and transforming equipment based on measurement data, and provides information suggesting a self-inspection of the power receiving and transforming equipment 10 if the timing at which the deterioration state of the power receiving and transforming equipment 10 falls below a predetermined threshold is before the next inspection timing of the power receiving and transforming equipment 10. This allows the maintenance management system 1 to appropriately suggest the timing of a self-inspection according to the deterioration state of the power receiving and transforming equipment 10. In other embodiments, instead of suggesting the timing of a self-inspection, information related to the replacement of parts of the power receiving and transforming equipment 10 or the renewal of the power receiving and transforming equipment 10 may be provided.

[0039] According to at least one embodiment described above, by having a collection unit that collects measurement data of the power receiving and transforming equipment 10 from a plurality of sensors 121 provided on the power receiving and transforming equipment 10, and a provisioning unit 25 that provides information related to the maintenance of the power receiving and transforming equipment 10 based on the measurement data, it is possible to appropriately provide information related to maintenance according to the status of the power receiving and transforming equipment.

[0040] <Computer Configuration> The maintenance management server 20 is equipped with a bus-connected processor, memory, auxiliary storage device, etc., and functions as a device comprising an equipment information storage unit 21, a collection unit 22, a measurement data storage unit 23, a determination unit 24 or a prediction unit 26, and a provision unit 25 by executing a maintenance management program. Examples of processors include a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), and a microprocessor. The maintenance management program may be recorded on a computer-readable recording medium. Computer-readable recording media include, for example, magnetic disks, magneto-optical disks, optical disks, and semiconductor memory. The maintenance management program may also be transmitted via a telecommunications line. Furthermore, all or part of the functions of the maintenance management server 20 may be implemented using custom LSIs (Large Scale Integrated Circuits) such as ASICs (Application Specific Integrated Circuits) or PLDs (Programmable Logic Devices). Examples of PLDs include PALs (Programmable Array Logic), GALs (Generic Array Logic), CPLDs (Complex Programmable Logic Devices), and FPGAs (Field Programmable Gate Arrays). Such integrated circuits are also included as examples of processors.

[0041] While several embodiments of the present invention have been described, these embodiments are provided as examples and are not intended to limit the scope of the invention. These embodiments can be carried out in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims and their equivalents. [Explanation of symbols]

[0042] 1...Maintenance management system 10...Power receiving and transforming equipment 11...Electrical equipment 12...Measuring device 121...Sensor 122...Microcomputer 123...Communication unit 13...Communication device 20...Maintenance management server 21...Equipment information storage unit 22...Collection unit 23...Measurement data storage unit 24...Determination unit 25...Provision unit 26...Prediction unit M...Maintenance personnel

Claims

1. A data collection unit that collects measurement data of the power receiving and transforming equipment from multiple sensors installed in the power receiving and transforming equipment, A storage unit for equipment information that stores the schedule for periodic inspections of the aforementioned power receiving and transforming equipment, A prediction unit predicts the deterioration of the power receiving and transforming equipment based on the measurement data, Based on the aforementioned measurement data, a provision unit provides information related to the maintenance of the power receiving and transforming equipment. Equipped with, The provisioning unit, when it is predicted in the deterioration prediction that the deterioration state of the substation equipment will fall below a predetermined threshold before the next scheduled inspection date of the substation equipment, proposes a date before the scheduled inspection date as the recommended inspection date. Maintenance and management system for power receiving and transforming equipment.

2. The system includes a determination unit that determines whether or not there is a malfunction in the power receiving and transforming equipment based on the measurement data, The aforementioned provisioning unit provides information indicating whether or not there is a malfunction in the substation equipment. Maintenance management system for power receiving and transforming equipment according to claim 1.

3. The aforementioned provision unit provides information related to the maintenance of the substation equipment at intervals shorter than the periodic inspection cycle. A maintenance management system for power receiving and transforming equipment according to claim 1 or claim 2.

4. The collection unit records the collected measurement data in a database, associating it with the time. The aforementioned provisioning unit, in response to a request from the user, reads the measurement data for a specified time from the database and provides it to the user. A maintenance management system for power receiving and transforming equipment according to any one of claims 1 to 3.

5. The aforementioned multiple sensors measure one of the following: temperature, humidity, contamination, acoustics, odor substance concentration, and partial discharge. A maintenance management system for power receiving and transforming equipment according to any one of claims 1 to 4.

6. The steps include: a step in which multiple sensors installed in the power receiving and transforming equipment acquire measurement data of the power receiving and transforming equipment; A computer predicts the deterioration of the power receiving and transforming equipment based on the measurement data, The computer provides information related to the maintenance of the power receiving and transforming equipment based on the measurement data, It has, In the step of providing the information, if the computer predicts that the deterioration state of the power receiving and transforming equipment will fall below a predetermined threshold in the deterioration prediction, it will propose a date prior to the scheduled inspection date as the recommended inspection date. Maintenance and management methods for power receiving and transforming equipment.

7. Computers, A data collection unit that collects measurement data from multiple sensors installed in the power receiving and transforming equipment, Equipment information storage unit that stores the schedule for periodic inspections of the aforementioned power receiving and transforming equipment, A prediction unit predicts the deterioration of the power receiving and transforming equipment based on the aforementioned measurement data. Based on the aforementioned measurement data, the providing unit provides information related to the maintenance of the power receiving and transforming equipment. To make it function as, The provisioning unit, when it is predicted in the deterioration prediction that the deterioration state of the substation equipment will fall below a predetermined threshold before the next scheduled inspection date of the substation equipment, proposes a date before the scheduled inspection date as the recommended inspection date. Maintenance and management program.

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