JP7047607B2 - Surveillance system and transmitter - Google Patents

Description

The present invention relates to a monitoring system and a transmitting device.

In order to be able to confirm (understand) the operating state of the power storage system with a smartphone or the like, information on the operating state of the power storage system (remaining amount of storage, etc.) is collected by a management server on the Internet.

Japanese Unexamined Patent Publication No. 2000-076033 Japanese Unexamined Patent Publication No. 2007-221565

When the power storage system is used alone, the operating state of the power storage system can be grasped only from the information from the power storage system, but when the power storage system is used in combination with the power generation system, power generation is performed. It is preferable to be able to grasp the operating state of the system (mainly the presence or absence of an abnormality). When information on the operating state can be obtained from the power generation system, it is possible to diagnose the presence or absence of an abnormality in the power generation system based on the information. Therefore, the operating state of the power storage system can be accurately grasped, but when the power generation system is made by another company or the power generation system does not have a function to output information on the operating state to an external device. Cannot obtain information on the operating state from the power generation system.

The present invention has been made in view of the above circumstances, and is a monitoring system capable of diagnosing the presence or absence of an abnormality in a power generation system connected to the same power receiving point as the power storage system without obtaining any information from the power generation system. It is an object of the present invention to provide a transmission device capable of constructing such a monitoring system.

The monitoring system according to one aspect of the present invention includes a management server and a transmission device that acquires information on the operating state of the power storage system from the power storage system and transmits the information to the management server via the Internet. Specifies the communication time and / or the communication amount of each communication to the management server for the power generation system on the Internet by capturing and analyzing the packets flowing on the network segment to which the transmission device is connected. A communication status information transmitting means for transmitting communication status information indicating a specific result to the management server is provided, and the management server receives power from the power storage system based on the latest plurality of the latest communication status information received from the transmission device. A diagnostic means for diagnosing the presence or absence of an abnormality in the power generation system connected to the point is provided.

That is, normally, the monitoring device of the power generation system transmits information about the operating state of the power generation system to the management server for the power generation system. When the operation of the power generation system is stopped due to the occurrence of an abnormality, the transmission of the information is stopped or the amount of transmitted information is reduced. Therefore, according to the monitoring system having the above configuration, it is possible to diagnose the presence or absence of an abnormality in the power generation system connected to the same power receiving point as the power storage system without obtaining any information from the power generation system.

In order to reduce the load on the processor in the transmitting device, the monitoring system is informed that "the transmitting device captures and analyzes packets flowing on the network segment to communicate with the power generation system management server. The learning means for learning the time zone is further provided, and the communication status information transmitting means of the transmitting device captures and analyzes packets flowing on the network segment only during each time zone learned by the learning means. You may adopt the "to do" configuration.

Further, the communication status information may be information indicating the presence or absence of communication to the power generation system management server or information indicating the amount of communication to the power generation system management server. Further, the diagnostic means of the management server may perform a process for notifying the user of the power storage system when it is diagnosed that there is an abnormality in the power generation system.

Further, the transmitting device according to one aspect of the present invention is a transmitting device that acquires information on the operating state of the power storage system from the power storage system and transmits it to a management server on the Internet, to which the self-transmitting device is connected. By capturing and analyzing the packets flowing on the network segment, the specific means for specifying the communication time and / or the communication amount of each communication to the management server for the power generation system on the Internet, and the communication time by the specific means and / Or a diagnostic means that diagnoses the presence or absence of an abnormality in the power generation system connected to the power receiving point of the power storage system based on the latest plurality of specific results of the communication volume, and transmits the diagnosis result to the management server. Be prepared.

By using this transmitter, it is possible to construct a system capable of diagnosing the presence or absence of an abnormality in the power generation system connected to the same power receiving point as the power storage system without obtaining any information from the power generation system.

According to the present invention, it is possible to diagnose the presence or absence of an abnormality in a power generation system connected to the same power receiving point as the power storage system without obtaining any information from the power generation system.

FIG. 1 is an explanatory diagram of a schematic configuration and a usage mode of a monitoring system according to an embodiment of the present invention. FIG. 2 is a schematic configuration diagram of a monitoring device which is a component of the monitoring system. FIG. 3 is an explanatory diagram of the master pattern. FIG. 4 is a flow chart of the pattern update process. FIG. 5 is an explanatory diagram of the master pattern generation process. FIG. 6 is a flow chart of the communication status information transmission process performed by the monitoring device. FIG. 7 is a flow chart of the communication status information analysis process performed by the management server.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First, the outline of the monitoring system according to the embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is an explanatory diagram of a schematic configuration and a usage mode of the monitoring system according to the embodiment, and FIG. 2 is a schematic configuration diagram of a monitoring device 20 which is a component of the monitoring system.

As shown in FIG. 1, the monitoring system according to the present embodiment includes a management server 10, a power storage system 30 combined with a power generation system 40 for selling power, and a monitoring device 20. In addition, "combined with the power generation system 40" means "connected to the power receiving point 55 to which the power generation system 40 is connected". Further, although FIG. 1 shows one power storage system 30 and one monitoring device 20, usually, the monitoring system includes a plurality of power storage systems 30 and a monitoring device 20 prepared for each power storage system 30. Built as a system that includes.

The power storage system 30 is a system in which a power conditioner for a storage battery (hereinafter, referred to as a PCS for a storage battery) 32 that controls charging / discharging of the storage battery 31 is connected to the storage battery 31. The storage battery PCS 32 constituting the power storage system 30 is based on the output of the current sensor 35 for detecting the reverse power flow current so that the electric power stored in the storage battery 31 does not reverse power flow (in other words, the power is not sold). ), It has a function of controlling the storage battery 31. The storage battery PCS32 also has the following functions.

-State value detection function for detecting various state values indicating the operating state of the self-storage system 30, for example, the remaining storage amount of the storage battery 31 and the reverse power flow power amount-Error detection for detecting an error occurring in the self-storage system 30 Function / Information output function to return the information requested from the monitoring device 20 connected by the communication cable 26 to the monitoring device 20 Note that the information that can be provided to the monitoring device 20 by the above information output function of the storage battery PCS 32 includes There are a state value detected by the state value detection function, status information indicating the current state of the power storage system 30, a device ID assigned to the PCS 32 for a self-storage battery, and the like.

The monitoring device 20 is a device for notifying the user and the management server 10 of the operating state of the power storage system 30. As shown in FIG. 2, the monitoring device 20 is an LCD (Liquid Crystal).
A display) 21, a control unit 22, a NIC (Network Interface Card) 23, and an operation unit 24 are provided.

The NIC 23 is an interface circuit for communicating with the management server 10. The monitoring device 20 is connected to the Internet via the router 15.

The operation unit 24 is a unit including a plurality of push button switches. The control unit 22 is a unit in which a processor (CPU, microcontroller, etc.), a storage device (RAM, HDD, SDD, etc.) and the like are combined. The control unit 22 operates as follows based on the set program, the address of the management server 10, and the like.

When the power is turned on, the control unit 22 communicates with the connected storage battery PCS 32 to grasp the device ID (hereinafter, referred to as own device ID) of the storage battery PCS 32. Then, the control unit 22 shifts to the normal state.

The control unit 22 that has transitioned to the normal state receives display instructions from the user such as the remaining charge amount, the charge / discharge amount, and the error being generated through the operation of the operation unit 24. When the control unit 22 receives a display instruction for certain information, the control unit 22 acquires the information from the storage battery PCS 32 and displays the information on the LCD 21.

Further, the control unit 22 that has transitioned to the normal state periodically acquires status information, the remaining charge amount, and the charge / discharge amount from the storage battery PCS 32, and transmits the acquired information to the management server 10.

The power generation system 40 (FIG. 1) is a system for selling power, which is used in combination with the monitoring device 45. Here, the monitoring device 45 periodically transmits information (power sales amount, etc.) regarding the operating state of the power generation system 40 to the power generation system management server 48 on the Internet, which is connected to the same network segment 16 as the monitoring device 20. It is a device to do. The power generation system 40 may be any system that sells power, but in the following description, the power generation system 40 includes a solar cell array 41 (hereinafter referred to as PV41) and a power conditioner for PV (hereinafter referred to as PV). It is assumed that it is a photovoltaic power generation system in combination with 42 (referred to as PCS for PCS).

Hereinafter, the configuration and operation of the monitoring system according to the present embodiment will be described more specifically.

As described above, the monitoring device 20 (control unit 22) can acquire information on the operating state of the power storage system 30 by communicating with the storage battery PCS 32. However, the monitoring device 20 is not configured to be communicable with the PV PCS 42 (see FIG. 1). Therefore, although the monitoring device 20 cannot acquire information on the operating state from the PV PCS 42, it is better to know the operating state of the power generation system 40 in order to accurately grasp the operating state of the power storage system 30. ..

In order to make it possible to grasp the operating state of the power generation system 40, the control unit 22 of the monitoring system according to the present embodiment can set the address information of the management server 48 for the power generation system, and also performs the master pattern generation process. It is programmed to perform communication status information transmission processing. The address information of the power generation system management server 48 (hereinafter, also referred to as server address information) is power generation from the monitoring device 45 such as the IP address of the power generation system management server 48 and the combination of the IP address and the port number. This is information set in the header of the packet transmitted to the system management server 48. The server address information is set by, for example, the installer of the monitoring device 20 based on the manufacturer name or the like of the PV PCS42.

Hereinafter, the contents of the master pattern generation process and the communication status information transmission process will be described in order.

[Master pattern generation process]
The master pattern generation process is executed over a predetermined number of days (for example, 5 days) from the operation start date (hereinafter referred to as the first day) of the monitoring device 20 in order to generate the master pattern referred to during the communication status information transmission process. It is a process to be performed.

FIG. 3 shows a configuration example of a master pattern generated by the master pattern generation process. As shown, the master pattern includes a plurality of communication history information. The communication history information in the master pattern includes communication time range information (“8: 55-9: 05”, etc.), size range information (“97-103byte”, etc.), and defect presence / absence information (“missing”, etc.). It is composed of "no defects"). In addition, although the character string (“defective”, “no defect”) is shown as the defect presence / absence information in FIG. 3, the defect presence / absence information is within a predetermined period depending on whether or not it is less than a predetermined value. Numerical information indicating whether or not there was a defect (details will be described later).

In the master pattern generation process, the master pattern having such a configuration is executed every day for the predetermined number of days, the packet collection process, the initial pattern generation process executed after the packet collection process on the first day, and the second and subsequent days. It is generated by the pattern update process executed after each packet collection process of.

Hereinafter, the contents of each process constituting the master pattern generation process will be described.
The packet collection process captures each packet flowing on the network segment 16 by operating the NIC 23 in the promiscuous mode, and all the data (that is, the IP header and the packet) of the packet whose destination IP address and the like match the server address information. This is a process of storing the IP payload) in the storage device in the control unit 22 in a form corresponding to the communication time which is the time when the packet is transmitted.

During the master pattern generation process, the packet collection process is started at a predetermined start time (for example, sunrise time) every day for the predetermined number of days, and ends at a predetermined end time (for example, sunset time). In the packet collection process in the present embodiment, it is determined whether or not the destination IP address or the like of the packet matches the server address information for each packet capture, and the destination IP address or the like matches the server address information. This is a process in which all the data of the packet determined to be (hereinafter referred to as capture data) is stored in the storage device. However, in the packet collection process, it is appropriate to process other processing procedures, for example, once the captured data of each packet is stored in the storage device, and then delete the captured data whose destination IP address or the like does not match the server address information. It may be a process to be performed.

The initial pattern generation process is a process of generating an initial value of a master pattern based on the capture data and communication time of each packet stored in the storage device by the packet collection process on the first day. Specifically, during the initial pattern generation process, the control unit 22 has a communication time of each packet transmitted by the monitoring device 45 to the power generation system management server 48 during the first day based on the information on the storage device. , The size is set as the communication time range information and the size range information, respectively, and "1" is set as the defect presence / absence information to generate a master pattern including the communication history information. Then, the control unit 22 erases the capture data and the communication time of each packet on the storage device, and then ends the initial pattern generation process.

The pattern update process executed after each packet collection process on and after the second day is a process for updating the master pattern.

FIG. 4 shows a flow chart of the pattern update process.
As shown in the figure, during the pattern update process, the control unit 22 first performs the first process target information setting process (step S101).

At the time of the first processing target information setting processing, the control unit 22 first stores that the first history communication history information in the master pattern is the processing target communication history information. Here, the first communication history information in the master pattern is the communication history information in the master pattern whose time range information indicates the oldest time range. Next, the control unit 22 stores the time range indicated by the time range information in the processing target communication history information (in the figure, the time range in the processing target information) as the registration time range. Further, the control unit 22 stores the size range indicated by the size range information in the processing target communication history information (in the figure, the size range in the processing target information) as the registered size range. Then, the control unit 22 stores the average value of the start time and the end time of the registration time range (hereinafter referred to as the registration time range center time) ± the predetermined time as the allowable time range, and then the first processing target information. End the setting process. The "registration time range center time ± predetermined time" is the time range from the registration time range center time-predetermined time to the registration time range center time + predetermined time. As a predetermined time, a time of about 5 minutes is usually used.

The control unit 22 that has completed the first processing target information setting processing performs the second processing target information specifying process (step S102). This second processing target information identification processing identifies the packet transmitted most recently from the packets that have not yet been processed, based on the information on the storage device, and processes the communication time of the specified packet. It is a process of storing as communication time and specifying the size of the packet and storing it as a processing target size. The size of the packet specified at the time of the second processing target information identification processing is the size of the packet payload (for example, IP payload or TCP payload) even if it is the total size of the packet (that is, the size of the captured data). May be.

The control unit 22 that has completed the second processing target information specifying processing determines whether or not the processing target communication time is later than the end time of the allowable time range (step S103).

When the processing target communication time is not later than the end time of the allowable time range (step S103; NO), the control unit 22 determines whether or not the processing target communication time is within the allowable time range (step S103; NO). Step S106). Then, when the processing target communication time is within the allowable time range (step S106; YES), the control unit 22 starts the processing target communication history information update process (step S107), and first, The missing presence / absence information in the processing target communication history information is incremented by "1".

Next, the control unit 22 determines whether or not the processing target communication history time is within the registration time range. Then, when the processing target communication time is not within the registration time range, the control unit 22 changes the start time or end time of the time range information to the processing target communication time, so that the processing target communication history information The time range information in is changed to the information indicating the time range including the communication time to be processed. Further, the control unit 22 determines whether or not the processing target size is a value within the registered size range. When the processing target size is not a value within the comparison target size range, the control unit 22 processes the processing target size range information by changing the upper limit value or the lower limit value of the processing target size range information to the processing target size. Change to information indicating the size range including the target size.

The control unit 22 that has completed the processing target communication history information update processing of the above contents performs the first processing target information update processing (step S108). At the time of the first processing target information update processing, the control unit 22 first determines whether or not the communication history information next to the current processing target communication history information exists in the master pattern. Here, the next communication history information of the current processing target communication history information is the current processing when the processing target communication history information existing before the pattern update processing in the master pattern is arranged in descending order of the time range information. It is the processing target communication history information that is located next to the target communication history information.

When the communication history information next to the current processing target communication history information exists in the master pattern, the control unit 22 performs the same processing as the first processing target information setting processing described above. That is, the control unit 22 stores that the communication history information next to the current processing target communication history information is the processing target communication history information. Further, the control unit 22 stores the time range indicated by the time range information in the processing target communication history information as a registration time range, and stores the size range indicated by the size range information in the processing target communication history information. Store as a registered size range. Further, the control unit 22 stores ± a predetermined time, which is expressed as the registration time range center time, as an allowable time range. Then, the control unit 22 ends the first processing target information update processing.

On the other hand, if the communication history information next to the current processing target communication history information does not exist in the master pattern, the control unit 22 will branch to the NO side at the time of determination in step S106. Is stored as an allowable time range. Then, the control unit 22 ends the first processing target information update processing.

Further, when the processing target communication time is not within the allowable time range (step S106; NO), the control unit 22 adds the communication history information to the master pattern (step S109). In the communication history information (see FIG. 3) added to the master pattern in the process of step S109, the processing target communication time and the processing target size are set as the communication time range information and the size range information, respectively, and are set to "1". Is the information set as the defect presence / absence information.

The control unit 22 that has completed the processing of step S108 or S109 determines whether or not the processing of all packets is completed (step S110), and if the processing of all packets is not completed (step S110; NO). Is the process of step S102 and subsequent steps executed again.

When the processing target communication time is later than the end time of the allowable time range (step S103; YES), the control unit 22 sets the processing target communication history information missing presence / absence information to “0” (step S104). ). Then, the control unit 22 performs the first processing target information update processing having the same contents as that performed in step S108 in step S105, and then starts the processing after step S106.

When the processing of all packets is completed by repeating the above processing (step S110; YES), the control unit 22 performs the capture data and communication time of each packet on the storage device as post-processing (step S111). Performs the process of erasing. Further, at the time of this post-processing, the control unit 22 determines whether or not unprocessed communication history information (communication history information not selected as the processing target) remains in the master pattern. Then, when the unprocessed communication history information remains, the processing for setting the missing presence / absence information in each unprocessed communication history information to "0" is performed, and then the post-processing and the packet update processing (FIG. 3). Processing) is finished.

The master pattern generation process is composed of the packet collection process, the pattern generation process, and the pattern update process having the above contents. Therefore, for example, when the predetermined number of days is "5", the communication status from the monitoring device 45 to the power generation system management server 48 from the first day to the fifth day is shown in the upper part of FIG. , The master pattern generation process will generate the master pattern shown in the lower part of FIG. In the master pattern shown in FIG. 5, the defect presence / absence information for less than the predetermined number of days is defined as “defective”, and the defect presence / absence information that matches the predetermined number of days is defined as “no defect”.

The control unit 22 that has completed the master pattern generation process has a start time of the communication time range indicated by the communication time range information in each communication history information in which the defect presence / absence information is equal to or higher than the specified value in the master pattern. Every time, the communication status information transmission process is performed.

The communication status information transmission process is the process of the procedure shown in FIG.
That is, when the start time of a certain communication time range specified by the master pattern is reached, the control unit 22 transfers the packet to the management server 48 for the power generation system until the end time of the communication time range. (Step S201). In the process of step S201, each packet flowing on the network segment 16 is captured by operating the NIC 23 in the promiscuous mode, and the size of the packet whose destination IP address or the like matches the server address information is specified and specified. This is a process in which the result is the communication amount.

The control unit 22 that has completed the process of step S201 transmits the communication status information in a predetermined format in which the grasped communication amount and the own device ID are set to the management server 10 using the NIC 23 (step S202).

Before explaining the contents of the remaining steps of the communication status information transmission process, the operation of the management server 10 that has received the communication status information will be described.

The management server 10 that has received the communication status information starts the communication status information analysis process in the procedure shown in FIG. 7, and first grasps the communication amount and the device ID set in the received communication status information (step S301). ). Next, the management server 10 reads the number of abnormal continuities associated with the grasped device ID (hereinafter referred to as the device ID of interest) from the management DB 12 onto the memory (step S302). The value of the number of abnormal continuities in the management DB 12 at the start of operation of the monitoring device 20 is "0".

After that, the management server 10 determines whether the communication amount is equal to or less than the specified amount (step S303). Here, the specified amount is a value preset as an upper limit value of the communication amount for determining that a problem may occur in the power generation system 40. This specified value may be a value stored in the management DB 12 for each power generation system 40, or may be a value set in the management server 10 and commonly used by all the power generation systems 40.

When the communication amount is not less than or equal to the specified value (step S303; NO), the management server 10 clears "0" the number of abnormal continuations associated with the device ID of interest in the management DB 12 (step S304). ). Further, the management server 10 diagnoses that there is no abnormality in the "power generation system 40 combined with the power storage system 30 having the attention device ID" (hereinafter referred to as the attention power generation system 40) (step S307). Then, the management server 10 returns the diagnosis result information for which the diagnosis result is set to the transmission source monitoring device 20 of the communication status information received this time (step S310), and then ends the communication status information analysis process.

On the other hand, when the communication amount is equal to or less than the specified value (step S303; YES), the management server 10 adds "1" to the number of abnormal continuities (step S305). The process of step S305 is a process of adding "1" to each of the abnormal continuous number on the memory and the abnormal continuous number associated with the device ID of interest in the management DB 12.

The management server 10 that has completed the process of step S305 determines whether or not the number of abnormal continuities is equal to or greater than a preset threshold value (for example, “6”) (step S308). Then, when the number of abnormal continuities is less than the threshold value (step S306; NO), the management server 10 performs the same processing as when the communication amount is not equal to or less than the specified value, and then performs this communication status information analysis processing. To finish.

On the other hand, when the number of continuous abnormalities is equal to or greater than the threshold value (step S306; YES), the management server 10 diagnoses that the power generation system 40 of interest has an abnormality (step S308). That is, when an abnormality occurs in the power generation system 40 (PV PCS 42), the PV PCS 42 normally stops operating, and the monitoring device 45 also stops transmitting information to the power generation system management server 48. Therefore, it can be determined whether or not there is an abnormality in the power generation system 40 of interest depending on whether or not the number of continuous abnormalities is equal to or greater than the threshold value.

The management server 10 that has completed the process of step S308 stores the diagnosis result and the diagnosis date in the management DB 12 in association with the device ID of interest (step S309). When the management server 10 is associated with a certain device ID and the diagnosis result indicating that there is an abnormality in the power generation system 40 is stored in the management DB 12, the operation of the power storage system 30 having the device ID is performed. A message indicating that there is an abnormality in the power generation system 40 is displayed on the status confirmation Web page.

Then, the management server 10 returns the diagnosis result information in which the diagnosis result is set to the transmission source monitoring device 20 of the communication status information received this time (step S310), and then ends the communication status information analysis process.

Returning to FIG. 6, the remaining steps of the communication status information transmission process will be described.
As is clear from the contents of the communication status information analysis process (FIG. 7) described above, when the process of step S202 is performed, the diagnosis result information is transmitted from the management server 10. After receiving this diagnosis result information (step S203), the control unit 22 determines whether or not the received diagnosis result information is information indicating that the power generation system 40 has an abnormality (step S204).

Then, when the diagnosis result information is not information indicating that there is an abnormality in the power generation system 40 (step S204; NO), the control unit 22 ends this communication status information transmission process without performing any particular process. do. Further, when the diagnosis result information is information indicating that the power generation system 40 has an abnormality (step S204; YES), the control unit 22 displays a message on the LCD 21 indicating that the power generation system 40 has an abnormality (step S204; YES). After step S205), this communication status information transmission process is terminated.

As described above, the monitoring device 20 of the monitoring system according to the present embodiment is for a power generation system on the Internet by capturing and analyzing packets flowing on the network segment 16 to which the monitoring device 20 is connected. It has a function of specifying the communication time and / or the communication amount of each communication to the management server 48 and transmitting the communication status information indicating the specific result to the management server 10. Further, the management server 10 of the monitoring system has a function of diagnosing the presence or absence of an abnormality in the power generation system 40 connected to the power receiving point 55 of the power storage system 30 based on the latest plurality of communication status information received from the monitoring device 20. have. Therefore, according to the monitoring system according to the present embodiment, it is possible to diagnose the presence or absence of an abnormality in the power generation system 40 connected to the same power receiving point 55 as the power storage system 30 without obtaining any information from the power generation system 40. As a result, according to the monitoring system according to the present embodiment, it is possible to more accurately determine the operating state of the power storage system 30.

<< Modification example >>
The monitoring system according to the above-described embodiment can be modified in various ways. For example, the monitoring device 20 may be transformed into a device in which the master pattern is set by the user. Further, since the power generation systems 40 of a plurality of manufacturers are rarely connected to the same power receiving point 55, all the address information of the power generation system management server 48 operated by each manufacturer is preset in the monitoring device 20. You may leave it.

The monitoring device 20 may be transformed into a device that handles a packet whose source address is the IP address or MAC address of the monitoring device 45 as a packet addressed to the power generation system management server 48. In the monitoring system, the monitoring device 20 transmits communication status information including defect presence / absence information to the management server 10, and the management server 10 diagnoses the presence / absence of abnormality in the power generation system 40 in consideration of the defect presence / absence information (for example). It may be transformed into a system (adding the value according to the defect presence / absence information to the number of abnormal consecutive numbers). The monitoring system is diagnosed on the monitoring device 20 side by performing processing equivalent to the communication status information analysis processing shown in FIG. 7 (that is, the monitoring device 20 diagnoses and diagnoses the presence or absence of an abnormality in the power generation system 40 from the packet collection result. It may be transformed into a system that notifies the management server of the result).

The monitoring device 20 performs data collection processing and pattern update processing (FIG. 4) every day, and the number of times that the monitoring device 20 is continuously branched to the YES side by the judgment of step S103 of the pattern update processing and YES of the judgment of step S103. It may be transformed into a device that diagnoses the presence or absence of an abnormality in the power generation system 40 and notifies the management server 10 of the diagnosis result based on the ratio of branching to the side. The pattern update process may be transformed into a process executed in parallel with the data collection process.

The monitoring device 20 detects a packet having the same combination of destination address and source address that flows on the network segment 16 at regular intervals (every 30 minutes, every hour, etc.), and the destination address and source of the detected packet. A function may be added in which the address is the address of the power generation system management server 48 and the address of the monitoring device 45, respectively.

The monitoring device 20 may have a device in which the destination address of the packet whose source address is the IP address or MAC address of the monitoring device 45 is the IP address of the power generation system management server 48. Further, the determination in step S303 may be determined as to whether or not communication with the management server 48 for the power generation system has been performed.

<< Additional notes >>
1. 1. Management server (10) and
A transmission device (20) that acquires information on the operating state of the power storage system (30) from the power storage system and transmits it to the management server (10) via the Internet.
Including
The transmitter (20) is
By capturing and analyzing the packets flowing on the network segment to which the transmitting device is connected, the communication time and / or the communication amount of each communication to the power generation system management server (48) on the Internet is specified. , Communication status information transmitting means for transmitting communication status information indicating a specific result to the management server,
Equipped with
The management server (10) is
A diagnostic means for diagnosing the presence or absence of an abnormality in the power generation system (40) connected to the power receiving point (55) of the power storage system (30) based on the latest plurality of the latest communication status information received from the transmission device.
To prepare
A monitoring system characterized by that.

2. 2. A transmission device (20) that acquires information on the operating state of the power storage system (30) from the power storage system and transmits it to the management server (10) via the Internet.
By capturing and analyzing the packets flowing on the network segment to which the self-transmitting device (20) is connected, the communication time and / or the communication amount of each communication to the power generation system management server (48) on the Internet. With specific means to identify
Diagnosing the presence or absence of abnormality in the power generation system (40) connected to the power receiving point (55) of the power storage system (30) based on the latest plurality of specific results of the communication time and / or the communication amount by the specific means. Then, a diagnostic means for transmitting the diagnostic result to the management server (10), and
(20).

10 Management device 12 Storage system management database 15 Router 16 Network segment 20, 45 Monitoring device 21 LCD
22 Control unit 23 NIC
24 Operation unit 26 Communication cable 30 Power storage system 31 Storage battery 32 Power conditioner for storage battery 35 Current sensor 40 Power generation system 41 Solar cell array 42 Power conditioner for PV 55 Power receiving point

Claims (6)

With the management server
A transmission device that acquires information on the operating state of the power storage system from the power storage system and transmits it to the management server via the Internet.
Including
The transmitter is
By capturing and analyzing the packets flowing on the network segment to which the transmitting device is connected, the communication time and / or the communication amount of each communication to the management server for the power generation system on the Internet is specified, and the specific result is specified. Communication status information transmission means for transmitting communication status information indicating
Equipped with
The management server
A diagnostic means for diagnosing the presence or absence of an abnormality in the power generation system connected to the power receiving point of the power storage system based on the latest plurality of the latest communication status information received from the transmission device.
To prepare
A monitoring system characterized by that. The transmitting device further includes a learning means for learning a time zone in which communication to the power generation system management server is performed by capturing and analyzing packets flowing on the network segment.
The communication status information transmitting means of the transmitting device captures and analyzes packets flowing on the network segment only during each time zone learned by the learning means.
The monitoring system according to claim 1. The communication status information is information indicating whether or not there is communication with the management server for the power generation system.
The monitoring system according to claim 2, wherein the monitoring system is characterized in that. The communication status information is information indicating the amount of communication to the management server for the power generation system.
The monitoring system according to claim 2, wherein the monitoring system is characterized in that. When the diagnostic means of the management server diagnoses that there is an abnormality in the power generation system, the diagnostic means performs a process for notifying the user of the power storage system to that effect.
The monitoring system according to any one of claims 1 to 4, wherein the monitoring system is characterized in that. A transmission device that acquires information on the operating state of the power storage system from the power storage system and transmits it to a management server on the Internet.
By capturing and analyzing packets flowing on the network segment to which the self-transmitting device is connected, as a specific means for specifying the communication time and / or the communication amount of each communication to the management server for the power generation system on the Internet. ,
Based on the latest plurality of specific results of the communication time and / or the communication amount by the specific means, the presence or absence of an abnormality in the power generation system connected to the power receiving point of the power storage system is diagnosed, and the diagnosis result is sent to the management server. Diagnostic means to send and
A transmitter characterized by comprising.

Images