JP2014006831A - Information collection method and system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To collect monitoring information within collection time restriction by devising collection targets so that a terminal which satisfies collection time restriction even when communication capacity requirement is not satisfied and from which information should be collected in prior in accordance with an environment in which a power line covered by a communication network is placed is automatically selected to collect information.SOLUTION: An installation management server executes the following method once in each corresponding communication network when adding/changing related information. In the method, collection time required when collecting information from all terminals belonging to the corresponding communication network is calculated while referring to a network configuration table, an environment restriction table sorted in each communication medium and a common environment restriction table, and when the collection time exceeds collection time requirement, application order of terminal selection logic is determined from a power line environment restriction table and a terminal selection logic list table, and collection terminals are selected one by one in the determined terminal selection logic application order. The collection time is calculated by the method and the selected collection terminals are successively added as collection terminals during a period satisfying the collection time requirement.

Description

  The present invention relates to an information collection method and system.

  The distribution line remote monitoring and control system periodically collects monitoring information at a plurality of points (monitoring terminals) on the distribution line and collects them one by one in order. In general, in a remote monitoring control system, after estimating a communication capacity necessary for transmission / reception in consideration of a collection time constraint, a method of laying a communication path that satisfies the communication capacity requirement is used.

  Japanese Patent Laid-Open No. 2002-365327 discloses a mechanism for collecting such information remotely. This publication discloses that an accident detector and a communication device such as a PHS are arranged on a power pole of a distribution system, and an e-mail is simultaneously transmitted to a mail server when an accident occurs (see summary).

JP 2002-365327 A

  When constructing a system by applying the method disclosed in Patent Document 1, the communication path is composed of a wireless communication part and a basic communication part, the wireless communication part is a star structure, the basic communication part is an optical fiber, etc. Since it is a large-capacity network, it is possible to collect information at a remote location while normally meeting the communication capacity requirements. However, because it is a public network, it is a best-effort type communication and may not meet the collection time requirement when the line is congested. Furthermore, since social infrastructure systems are systems that cover a wide range of areas, there are areas that cannot meet communication capacity requirements during the system transition period due to long installation costs and system transition periods. May remain after the period.

  Therefore, in the present invention, even when the communication capacity requirement cannot be satisfied, the collection time constraint is satisfied, and a terminal to be preferentially collected according to the environment where the power line covered by the communication network is placed is automatically selected. By devising the collection target such as collecting, it is possible to collect monitoring information within the collection time constraint without using communication infrastructure such as PHS by the following concrete measures.

The present application includes a plurality of means for solving the above-described problems, and an example thereof will be described.
When the distribution line configuration is changed, the information collection server calculates the time required to collect distribution line information from all distribution line monitoring terminals included in the changed distribution line configuration. If the calculated time is larger than the preset time limit as a result of the comparison, the distribution line monitoring subject to information collection stored in advance is compared. Priorities are assigned to multiple programs for selecting terminals based on the configuration of the distribution line after the change, and the terminals are selected by executing the programs according to the given priorities, and information is collected from the selected terminals. To do.

  According to the present invention, even if the communication capacity requirement is not satisfied due to the influence of the communication infrastructure such as PHS, it is possible to collect information in a remote place by satisfying the collection time constraint.

It is an example of a distribution line remote monitoring control system block diagram. It is an example of the hardware block diagram of a monitoring control server. It is an example of a network configuration table. It is an example of the environmental constraint table classified by communication media. It is an example of a common environment constraint table. It is an example of a power line environment restriction table. It is an example of a terminal selection logic list table. It is an example of a terminal selection logic application order list table. 3 is an example of a flowchart illustrating an information collection method according to the first embodiment. It is an example of the flowchart explaining step 901 in detail. It is an example of the flowchart explaining step 903 in detail. It is an example of the flowchart explaining step 904 in detail. 10 is an example of a network configuration table in the second embodiment. 10 is an example of a flowchart illustrating an information collection method according to the second embodiment.

  Hereinafter, examples will be described with reference to the drawings.

  In this embodiment, even when the communication capacity requirement cannot be satisfied, the collection time constraint is satisfied, and a terminal to be preferentially collected is automatically selected according to the environment where the power line covered by the communication network is placed. An example of a collection method and system will be described.

  FIG. 1 is an example of a distribution line remote monitoring and control system configuration diagram of the present embodiment. Power is transmitted from the distribution substation 100 through the power line 101. A plurality of power lines 101 exits from the distribution substation 100. The power line 101 is divided by a plurality of section switches 102, so that it can be seen that an accident has occurred in the area between the section switches 102 when a distribution line fault occurs. The distance between the section switches 102 is several kilometers or more. In addition to the section switch 102, a device 103 such as a voltage adjusting device or a sensor-equipped device is attached to the power line 101. A monitoring control master station 104 is installed in the distribution substation 100. A plurality of communication lines 105 extend from the monitoring control master station 104 and are connected to monitoring slave stations 106 at a plurality of points on the power line 101. The supervisory control master station 104 is a device that relays communication between the distribution line remote supervisory control server 108 and the supervisory slave station 106, and includes communication media (optical fiber, metal line, coaxial cable, radio, etc.) and communication protocol. Conversion is performed. The monitoring control master station 104 may collect information of the monitoring slave stations 106 connected via the communication line 105 and communicate with the distribution line remote monitoring control server 108. Or a simple repeater like HUB may be sufficient. The arrangement of the power line 101 and the arrangement of the communication line 105 do not correspond one-to-one, and the communication line 105 is laid across a plurality of power lines 101. The communication line 105 is composed of various types of communication media. The monitoring slave station 106 is installed at various devices 103 and points connected to the section switch 102 and other power lines 101. The monitoring control master station 106 monitors information such as device control information, voltage measurement values, and accident direction detection information. 104 is being sent to and received from 104. In the sales office 107, a distribution line remote monitoring control server 108 and an equipment information management server 109 are installed. The distribution line remote monitoring and control server 108 is connected to the monitoring control master station 104 of the plurality of distribution substations 100 via the wide area network 110, and controls, monitors, and collects information on the various devices 102 and 103 on the power line 101. It is carried out. By monitoring, it is possible to grasp the power outage occurrence state and the cause of the occurrence, and it is possible to grasp the remaining capacity of the distribution system by collecting information. In addition, the section switch 102 and the device 103 are remotely operated so that the power outage section is automatically minimized when a power outage occurs. The wide area network 110 is an optical fiber, a metal line, a coaxial cable, a radio, or the like. The facility information management server 109 manages information on various facility devices. The construction plans and inspections are judged based on the equipment configuration, layout, and maintenance history.

  FIG. 2 is an example of a configuration diagram of the monitoring control server 108. The monitoring control server 108 includes a transmission / reception unit 200 for equipment information management server, a transmission / reception unit 201 for monitoring control master station, a control unit 203, and storage units 204 and 205. These are connected by an internal bus 202 or the like. The transmission / reception unit 200 for the facility information management server receives update information from the facility information management server 109 in FIG. The transmission / reception unit 201 for the supervisory control master station transmits / receives information to / from the supervisory control master station 106 via the wide area network 110 in FIG. The storage units 204 and 205 include a network configuration table 300, a communication media-specific environment constraint table 400, a common environment constraint table 500, a power line environment constraint table 600, and a terminal selection logic necessary for calculating communication capacity and selecting a terminal. A list table 700 and a logic application order list table 800 are held.

  FIG. 3 is an example of the network configuration table 300 held in the storage units 204 and 205 in FIG. The network configuration is how many monitoring slave stations 106 are connected for each communication line 105, how much relaying is performed when communication is performed between each monitoring slave station 106 and the monitoring control master station 104, Furthermore, it is information indicating to which location or device each monitoring slave station 106 is connected. The registration items of the network configuration table 300 are a communication line ID 301, a communication media ID 302, a collection terminal number 303, a relay number list 304, and a terminal flag 305. The communication line ID 301 is an ID assigned to a plurality of communication lines 105 coming out from the monitoring control master station 104 of each distribution substation 100. The communication media ID 302 is an ID assigned for each type of communication media, and may be composed of a plurality of communication media for one communication line 105. The collection terminal number 303 is the total number of the monitoring slave stations 106 installed on the communication line 105 of the communication line ID 301. The relay number list 304 is a list including the terminal ID of the monitoring slave station 106 and the number of transmission / reception relays when communication is performed from the monitoring control master station 104 to the corresponding monitoring slave station 106. When the distance between the monitoring control master station 104 and the monitoring slave station 106 is long, communication may be performed via a plurality of repeaters by communication media. The monitoring slave station 106 also serves as this repeater. It is assumed that terminal IDs are allocated in order from the closest distance from the monitoring control master station 104. The terminal flag 305 represents the type of the monitoring slave station 106, 1 when the terminal is a repeater dedicated terminal, 2 when the terminal is the monitoring slave station 106 of the section switch 102, and the device 103 near the end of the power line 101. 3 for the monitoring slave station 106, 4 for the priority monitoring slave station 106 set in advance, and the monitoring slave station 106 near the tap switching point of the pole transformer connected to the power line 101. 5. In other cases, a value of 0 is set.

  FIG. 4 is an example of the communication medium-specific environment constraint table 400 held in the storage units 204 and 205 in FIG. The registration items of the environment constraint table 400 for each communication medium are a communication medium ID 302, a communication capacity 402, a header footer size 403, a relay delay 404, a delay before transmission 405, and a delay 406 after reception. The communication medium-specific environment restriction table 400 describes restrictions and conditions for transmission / reception for each communication medium. A communication capacity 402 is a communication capacity in the communication media ID 302. The header / footer size 403 is a total of header and footer sizes necessary for communication using the communication media ID 302. The relay delay 404 is a processing time required for relay when relaying is performed when communication is performed using the communication media ID 302. A pre-transmission delay 405 and a post-reception delay 406 are delay times defined when communication is performed using the communication media ID 302.

  FIG. 5 is an example of the common environment constraint table 500 held in the storage units 204 and 205 in FIG. This table describes common restrictions and conditions that do not depend on communication media. The registered items of the common environment constraint table 500 are an environment constraint 501 and its value 502. The environment constraint 501 includes processing delay time until data is transmitted after the monitoring slave station 106 receives data, processing delay time until data is transmitted after the monitoring control master station 104 receives data, header footer It consists of the transmission / reception data capacity that does not contain the data, the number of retries when a communication timeout occurs, and the collection time constraint.

  FIG. 6 is an example of the power line environment constraint table 600 held in the storage units 204 and 205 in FIG. The registration items of the power line environment constraint table 600 are a communication line ID 301, a corresponding feeder distance list 602, a corresponding feeder branch list 603, and a corresponding feeder PV introduction ratio list 604. There are a plurality of power lines 101 corresponding to the communication line ID 301, and the plurality of power lines 101 are listed. The corresponding feeder distance list 602 is a list of lengths of a plurality of power lines 101. The length is the distance at which the power line 101 is laid. The corresponding feeder branch list 603 is a list of the number of branches of each of the plurality of power lines 101. The corresponding feeder PV introduction ratio list 604 is a list of the ratio of the photovoltaic power generation introduction capacity in the load capacity of each power line 101 of the plurality of power lines 101.

  FIG. 7 is an example of the terminal selection logic list table 700 held in the storage units 204 and 205 in FIG. Here, the logic is synonymous with a program. The registration items of the terminal selection logic list table 700 are a logic ID 701, a subroutine ID 702, a long feeder flag 703, a multi-branch flag 704, and a PV spread flag 705. The logic ID 701 is an ID for identifying a plurality of terminal selection logics. The subroutine ID 702 is an ID for identifying a subroutine in which a terminal selection logic corresponding to the logic ID 701 is mounted. The long feeder flag 703, the multi-branch flag 704, and the PV spread flag 705 are values for changing the application priority of the terminal selection logic when each condition is satisfied. The application priority of the selection logic is not changed, and a non-zero value indicates that the application priority of the terminal selection logic is changed by that value when the condition is satisfied. For example, when the value of the logic ID 701 is 5 satisfies the condition of the long feeder flag 703, it indicates that the application priority of the logic ID 701 is increased by 1. Even when the condition of the multi-branch flag 704 is satisfied, the application of the logic ID 701 is performed. This means that the priority does not change. For example, in the terminal selection logic, logic ID 701 1 is logic for selecting a monitoring slave station 106 connected to the section switch 102, 2 is logic for selecting a preset monitoring slave station 106, and 3 is a pole transformer Logic for selecting the monitoring slave station 106 in the vicinity of the tap switching point of 4. Logic for selecting the terminal of each branch of the distribution line 101. Logic for selecting the monitoring slave station 106 far from the monitoring control master station 104 with priority. It is.

  FIG. 8 is an example of the terminal selection logic application order list table 800 held in the storage units 204 and 205 in FIG. It is a table showing the priority order after changing the logic application priority. The registration items of the application order list table 800 are a priority order 801, a logic ID 701, and a subroutine ID 702. A collection terminal is selected by applying terminal selection logic in the order of priority 801.

  The information collection method will be described using the flowchart of FIG. This is executed once for the communication line 105 by the monitoring control server 108 when the equipment information management server 109 adds or changes related information such as device addition or network configuration change. The collection time when the collection time calculation processing unit collects information from all monitored slave stations 106 belonging to the communication line 105 affected by the additional change is the network configuration table 300, the environment constraint table 400 for each communication medium, and the common environment constraint table. Calculation is performed with reference to 500 (step 901). Next, the collection time constraint determination processing unit compares the collection time constraint registered in the common environment constraint table 500 with the collection time calculated in step 901 (step 902). If the collection time constraint is exceeded, step 903 is performed. If not, step 905 is executed. When the collection time constraint is exceeded, the logic order determination processing unit determines the application order of the terminal selection logic from the power line environment constraint table 600 and the terminal selection logic list table 700 (step 903). Next, the terminal selection processing unit selects the collection terminals one by one in the order of application of the terminal selection logic determined by referring to the terminal selection logic application order list table 800, calculates the collection time by the method of step 901, and collects the collection time requirements. While it satisfies, it is added as a collection terminal (step 904). Finally, the list of collection terminals is transmitted to the corresponding monitoring control master station 104 (step 905).

  The details of the collection time calculation method in step 901 will be described based on the flowchart of FIG. First, information of the communication media ID 302, the collected terminal number 303, the relay number list 304, and the terminal flag 305 of the corresponding communication line ID 301 is extracted from the network configuration table 300 (step 1001). Next, information on the corresponding communication media ID is extracted from the communication media-specific environment constraint table 400 (step 1002). Next, information is extracted from the common environment constraint table 500 (step 1003). Next, the terminal ID and the collection time are initialized (step 1004). It is confirmed whether the communication time has been calculated for all terminals (step 1005). If not completed, step 1006 is completed. If completed, the process is terminated. If the communication time is not calculated for all terminals, the communication time is calculated based on the communication capacity and transmission data capacity extracted for one terminal, various delays and the number of relay stages (step 1006). Next, the collection time is added to the total collection time so far, and the terminal ID is incremented (step 1007).

  Details of the terminal selection logic application order determination method in step 903 will be described based on the flowchart of FIG. First, the terminal selection logic application order list table 800 and flag confirmation number are initialized (step 1101). Next, the flag confirmation number is incremented (step 1102). Next, the flag confirmation number is compared with the number of each flag type in the terminal selection logic list table 700 (for example, three of 703, 704 and 705 in FIG. 7). If there is something that has not been confirmed, step 1104 is executed. If there is an item that has not been confirmed, it is determined whether or not the corresponding communication line ID 301 satisfies the flag condition from the flag item of the terminal selection logic list table 700 and the power line environment constraint table 600. If 1105 is not satisfied, step 1102 is executed (step 1104). For example, for the communication line 105 whose communication line ID 301 is 10002, if the condition of the long feeder flag 703 is 30 kilometers or more, the communication line ID 301 of the corresponding feeder distance list 602 of the power line environment constraint table 600 is confirmed as 10002. Since the power line 101 of 30 kilometers or more exists (40 kilometers), the flag condition is satisfied. If the flag condition is satisfied, the corresponding flag portion of the terminal selection logic list table 700 is referred to, and the priority of the corresponding logic ID 701 is added by the value written in the corresponding flag of the terminal selection logic list table 700 to thereby add the terminal selection logic. The application order list table is updated (step 1105). For example, if the condition of the long feeder flag 703 is satisfied, the priority of logic ID 701 is increased by 1.

  Based on the flowchart of FIG. 12, details of a method of adding collection terminals while satisfying the collection time constraint by sequentially applying the terminal selection logic in step 904 will be described. First, the selection terminal ID, the collection time total value, the selection logic ID, and the collection terminal list are initialized (step 1201). Next, referring to the terminal selection logic application order list table 800, the subroutine is executed from the subroutine ID 702 corresponding to the selected logic ID 701, and the number of selected terminals and the terminal list are set (step 1202). Next, if the processing is completed for all the terminals included in the terminal list set in step 1202, step 1207 is executed, and if not, step 1204 is executed (step 1203). If processing has not been completed for all the terminals included in the terminal list set in step 1202, the above-described step 1006 is executed to calculate the information collection time of the corresponding terminal ID, and the total collection time value Whether the sum of the collection times calculated in step 1006 exceeds the collection time constraint is determined. If it exceeds, the processing is terminated, and if not, step 1206 is executed (step 1205). If not, the collection time calculated in step 1006 is added to the total collection time value, the corresponding terminal ID is added to the collection terminal list, and step 1203 is executed (step 1206). In step 1203, when the processing is completed for all the terminals included in the terminal list set in step 1202, it is confirmed whether all the terminal selection logics are selected, and if all are selected, the processing is performed. If not, step 1202 is executed for the next terminal selection logic (step 1207).

  In this way, the collection time for collecting information from all collection terminals is first calculated, and if the collection time constraint cannot be satisfied, the application order of multiple terminal selection logics is automatically determined according to the environment in which the information is placed. Thus, it is possible to collect optimum information from the maximum number of terminals that satisfy the collection time constraint.

  Furthermore, it is not necessary to modify the monitoring control server software at the time of additional expansion or communication media update, and it becomes possible to respond flexibly.

  Furthermore, since the terminals that should be collected preferentially are selected according to the environment where the power lines covered by the communication network are placed, the system according to the spread of solar power generation, etc. can be grasped accurately. Supports the decision of the equipment plan for stabilization.

  In the second embodiment, not the maximum terminal satisfying the collection time constraint but a margin for adding one terminal collection is provided, and it is detected that the voltage deviates from a predetermined range in the corresponding power line 101. In this case, the monitoring substation 106 from the distribution substation 100 is connected to one of the section switches 102 and the devices 103 from the distribution substation 100 among the section switches 102 and the devices 103 in which the deviation is detected. The second embodiment is different from the first embodiment in that the monitored slave station 106 is added as a collection terminal and collected for the section switch 102 and the device 103 that have been selected. It should be noted that the number of terminals is set to 1 as an example, and a plurality of terminals may be added.

  FIG. 13 is an example of the network configuration table 300 in the second embodiment. The registration items of the network configuration table 300 are a communication line ID 301, a communication media ID 302, a collection terminal number 303, a relay number list 304, a terminal flag 305, and an adjacent terminal list 1301. The adjacent terminal list 1301 is a monitoring slave station connected to the section switch 102 or the equipment 103 from one distribution substation 100 of the section switch 102 or the equipment 103 connected to the monitoring slave station 106 of the corresponding terminal ID. 106 is a list of terminal IDs of 106 and terminal IDs of the monitoring slave stations 106 connected to the section switch 102 and the device 103 from the end of one power line 101.

  FIG. 14 is a flowchart illustrating an information collection method according to the second embodiment. This is executed once for the corresponding communication line 105 by the monitoring control server 108 when the facility information management server 109 adds or changes related information or detects that the voltage deviates from a predetermined specified voltage range. First, it is determined whether or not a voltage deviation has been detected. If no voltage deviation has occurred, step 901 is executed, and if a voltage deviation has occurred, step 1403 is executed (step 1401). If no voltage deviation has occurred, steps 901 to 904 are executed, and then the last added terminal is deleted from the collection terminal list (step 1402). As a result, not the maximum number of terminals that satisfy the collection time constraint but a margin for adding one terminal collection. In step 1401, if a voltage deviation occurs, a section switch from the distribution substation 100 with one corresponding terminal ID from the adjacent terminal list 1301 corresponding to the terminal ID in the corresponding communication line ID 301 and communication media ID 302 of the network configuration table 300 is displayed. 102, the terminal ID of the monitoring slave station 106 connected to the device 103 and the terminal ID of the monitoring slave station 106 connected to the section switch 102 or the device 103 from the end of one power line 101 is extracted, and the corresponding terminal ID If the monitoring slave station 106 connected to the section switch 102 or the device 103 from the one distribution substation 100 is not included in the collection terminal list, the collection time required for collecting information is calculated, One terminal ID corresponding to the collection terminal list The section switch 102 and the device 10 from the distribution substation 100 Terminal ID of the monitoring slave station 106 connected to add (step 1403). If it is already included in the collection terminal list, it is not added. Next, it is determined whether or not the sum of the calculation result of step 1403 and the current total collection time exceeds the collection time constraint. If so, step 1405 is executed, and if not, step 905 is executed (step 905). 1404). If the collection time limit is exceeded, the terminal ID of the monitoring slave station 106 connected to the section switch 102 or the device 103 from the end of one power line 101 of the corresponding terminal ID is included in the collection terminal list. The search is repeated until it is found, deleted from the collection terminal list, and step 905 is executed (step 1405).

  As described above, in the second embodiment, when the voltage deviates from a predetermined specified range, it is possible to automatically select an area having the smallest voltage fluctuation margin and continue monitoring.

108 monitoring control server 109 facility information management server 110 wide area network 104 monitoring control master station 105 communication line 106 monitoring slave station 100 distribution substation 101 distribution line 102 section switch 103 equipment

Claims (14)

An information collection method for collecting distribution line information,
When the configuration of the distribution line is changed, a calculation step for calculating the time required for the information collection server to collect information from all distribution line monitoring terminals included in the changed distribution line configuration;
A comparison step in which the information collection server compares the calculated time with a preset time limit for information collection;
If the calculated time exceeds the preset time limit as a result of the comparison, the information collection server stores a plurality of programs for selecting a distribution line monitoring terminal that is a target of information collection stored in advance. , A priority order giving step for giving a priority order based on the configuration of the changed distribution line;
The information collection server executes the program according to the priority order given in the priority order granting step, and selects a distribution line monitoring terminal that is a target of information collection; and
An information collecting step for collecting information from the distribution line monitoring terminal selected in the terminal selection step;
An information collecting method comprising: The information collection method according to claim 1,
The storage unit of the information collection server stores a table in which items included in the configuration information of distribution lines and thresholds corresponding to the items are associated with each other,
In the priority order giving step, the information collection server calculates the characteristics of the distribution line configuration based on the changed distribution line configuration and the table, and gives priority to the program corresponding to the feature. An information collecting method characterized by assigning the priorities. In the information collection method of Claim 1 or Claim 2,
The terminal selection step is a step of adding distribution line monitoring terminals selected in each program until the maximum number that can collect information within the preset time limit is reached according to the priority order of the programs. Characteristic information collection method. In the information collection method of Claim 1 or Claim 2,
In the terminal selection step, the distribution line monitoring terminals selected in each program are distributed in a number obtained by subtracting a predetermined number from the maximum number capable of collecting information within the preset time limit according to the priority order of the programs. An information collecting method, which is a step of selecting an electric wire monitoring terminal. In the information collection method of Claim 3 or Claim 4,
The plurality of programs include a program for selecting a distribution line monitoring terminal connected to the section switch, a program for selecting a distribution line monitoring terminal set in advance, and a distribution line monitoring terminal in the vicinity of the tap switching point of the columnar transformer. An information collecting method comprising: a program for selecting, and a program for selecting an end of each branch of a distribution line. The information collection method according to claim 4,
When it is detected that the voltage has deviated from the predetermined range in the power line, the information collection server is the distribution line monitoring terminal closest to the distribution substation among the plurality of distribution line monitoring terminals that have detected the voltage deviation. Voltage deviation information collection target selection step for selecting a distribution line monitoring terminal adjacent to the distribution substation direction from the identified distribution line monitoring terminal as an information collection target, and the voltage deviation information collection target selection step A voltage deviation calculation step for calculating the time required to collect information from the distribution line monitoring terminal that is the target of information collection in
The information collection server compares the calculated time with a preset time limit for information collection, and a voltage deviation comparison step;
As a result of the comparison, when the calculated time exceeds the preset time limit, the information collection server is the most distribution substation among the distribution line monitoring terminals that are targets of information collection. Exclusion step of excluding a predetermined number of distribution line monitoring terminals located in the distal direction from the nearby distribution line monitoring terminal from the target of information collection,
An information collecting method comprising: An information collection system for collecting distribution line information using a facility information management server, an information collection server, and a distribution line monitoring terminal,
The facility information management server
A storage unit that stores information on the configuration of the distribution line after the change when the configuration of the distribution line is changed, and a transmission unit that transmits information on the configuration of the distribution line,
The information collection server
A storage unit that pre-stores a plurality of programs for selecting distribution line monitoring terminals to be collected, a receiving unit that receives the changed distribution line configuration, and the received changed distribution line configuration A calculation unit that calculates a time required to collect information from all the distribution line monitoring terminals included; a collection time constraint determination processing unit that compares the calculated time with a preset time limit for collecting information; As a result of the comparison, when the calculated time exceeds the preset time limit, a program order determination is performed to give priority to the plurality of programs based on the configuration of the distribution line after the change. A processing unit, a terminal selection processing unit that executes the program according to the priority order, selects a distribution line monitoring terminal to be collected information, and collects information from the selected distribution line monitoring terminal Information collection system comprising: the information collection processing unit. The information collection system according to claim 7,
The storage unit of the information collection server stores a table in which items included in the configuration information of distribution lines and thresholds corresponding to the items are associated with each other,
The program order determination processing unit calculates the characteristics of the distribution line configuration based on the changed distribution line configuration and the table, and assigns the priority order so that the program corresponding to the feature is prioritized. An information collection system characterized by In the information collection system according to claim 7 or 8,
The terminal selection processing unit adds distribution line monitoring terminals selected in each program in accordance with the priority order of the programs until the maximum number that enables information collection within the preset time limit is reached. Information collection system. In the information collection system according to claim 7 or 8,
The terminal selection processing unit reduces the distribution line monitoring terminals selected in each program according to the priority order of the program to a number obtained by subtracting a predetermined number from the maximum number capable of collecting information within the preset time limit. An information gathering system characterized by adding until it becomes. The information collection system according to claim 9 or 10,
The plurality of programs include a program for selecting a distribution line monitoring terminal connected to the section switch, a program for selecting a distribution line monitoring terminal set in advance, and a distribution line monitoring terminal in the vicinity of the tap switching point of the columnar transformer. An information collection system comprising: a program for selecting, and a program for selecting an end of each branch of a distribution line. The information collection system according to claim 10,
When the terminal selection processing unit detects that the voltage has deviated from a predetermined range in the power line, the distribution line monitoring closest to the distribution substation among the distribution line monitoring terminals at the location where the voltage deviation is detected is detected. Identify the terminal, select the distribution line monitoring terminal adjacent to the distribution substation from the identified distribution line monitoring terminal as the target of information collection,
The calculation unit calculates the time required to collect information from the distribution line monitoring terminal that is the target of the information collection,
The collection time constraint determination processing unit compares the calculated time with a preset time limit for collecting information,
The terminal selection processing unit, as a result of the comparison, when the calculated time exceeds the preset time limit, among the distribution line monitoring terminals subject to information collection, the most distribution substation The information collection system characterized by excluding a predetermined number of distribution line monitoring terminals located in the distal direction from the distribution line monitoring terminals close to the number of information collection targets. An information collection target determination method for determining a distribution line monitoring terminal that is a target for collecting distribution line information,
When the configuration of the distribution line is changed, a calculation step for calculating the time required for the information collection server to collect information from all distribution line monitoring terminals included in the changed distribution line configuration;
A comparison step in which the information collection server compares the calculated time with a preset time limit for information collection;
If the calculated time exceeds the preset time limit as a result of the comparison, the information collection server stores a plurality of programs for selecting a distribution line monitoring terminal that is a target of information collection stored in advance. , A priority order giving step for giving a priority order based on the configuration of the changed distribution line;
The information collection server executes the program according to the priority order given in the priority order granting step, and selects a distribution line monitoring terminal that is a target of information collection; and
An information collection target determining method comprising:   A storage unit that stores in advance a plurality of programs for selecting distribution line monitoring terminals to be collected, and all distribution line monitoring terminals included in the distribution line configuration after the distribution line configuration is changed A calculation unit that calculates a time required to collect information from, a collection time constraint determination processing unit that compares the calculated time with a preset time limit for collecting information, and the calculation result as a result of the comparison If the time exceeds the preset time limit, a program order determination processing unit that gives priority to the plurality of programs based on the changed distribution line configuration, and according to the priority A terminal selection processing unit that executes the program and selects a distribution line monitoring terminal that is a target of information collection, and an information collection device that collects distribution line information.

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