Patent Publication Number: US-2016233686-A1

Title: Power management unit and power management method

Description:
TECHNICAL FIELD 
     The present disclosure relates to a power management unit and a power management method. 
     BACKGROUND ART 
     As conventional power management, for example, Patent Literatures 1 to 4 are disclosed. Patent Literatures 1 to 4 disclose power management constituted by a single type of device. 
     CITATION LIST 
     Patent Literature 
     
         
         PTL 1: Japanese Translation of PCT Publication No. 2013-523060 
         PTL 2: Unexamined Japanese Patent Publication No. 2012-73740 
         PTL 3: Unexamined Japanese Patent Publication No. 2011-186721 
         PTL 4: Unexamined Japanese Patent Publication No. 2001-5543 
       
    
     SUMMARY OF THE INVENTION 
     A power management unit in accordance with the present disclosure has a part that transmits first information data related to a first device for creating, consuming, or accumulating first energy and second information data related to a second device for creating, consuming, or accumulating second energy to a server. Further, the power management unit has a part that receives control data for controlling the first device and the second device from the server, and a part that transmits the control data to the first device and the second device. 
     A power management method in accordance with the present disclosure is a way of transmitting first information data related to a first device for creating, consuming, or accumulating first energy and second information data related to a second device for creating, consuming, or accumulating second energy from a power management unit to a server. The power management method is a way of further transmitting control data for controlling the first device and the second device from the server to the power management unit, and transmits the control data from the power management unit to the first device and the second device. 
     As above, the information related to multiple types of devices is controlled to utilize energy efficiently. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a conceptual diagram of the entire power management system in an exemplary embodiment. 
         FIG. 2  is a conceptual diagram of a device group of the power management system in the exemplary embodiment. 
         FIG. 3  is a block diagram of the power management system in the exemplary embodiment. 
         FIG. 4  is a block diagram of a power management system in a first variation of the exemplary embodiment. 
         FIG. 5  is a block diagram of a power management system in a second variation of the exemplary embodiment. 
         FIG. 6  is a block diagram of a power management system in a third variation of the exemplary embodiment. 
         FIG. 7  is a view showing a data configuration in the first variation of the exemplary embodiment. 
         FIG. 8  is a view showing a data configuration in the second variation of the exemplary embodiment. 
         FIG. 9  is a view showing another type of data configuration in the second variation of the exemplary embodiment. 
         FIG. 10  is a schematic view of a solar panel unit in a first reference. 
         FIG. 11  is a schematic view of a solar panel unit in a second reference. 
     
    
    
     DESCRIPTION OF EMBODIMENT 
     Conventionally, power management using a single type of device is disclosed. However, power management using multiple types of devices is not disclosed. Thus, the objective of the present disclosure is to provide a power management unit and a power management method that utilize energy efficiently by controlling information related to multiple types of devices. 
     Hereinafter, an exemplary embodiment of the present disclosure will be described in detail with reference to the drawings. Note that, in figures, the assignment of reference numerals to the same part is omitted, and the description thereof is omitted as necessary. Further, an exemplary embodiment, which indicates an example of preferable embodiments, is not limited to their configuration or shape. Furthermore, respective underlying technologies described in the exemplary embodiment can be combined conveniently if not producing inconsistency. 
     EXEMPLARY EMBODIMENT 
       FIG. 1  shows a concept of a power management system in accordance with an exemplary embodiment of the present disclosure.  FIG. 2  is a conceptual diagram of a device group of the power management system in the exemplary embodiment.  FIG. 2  is a view showing device group  400  and power grid  480  extracted from  FIG. 1 . The respective devices are connected as shown in  FIG. 2 . 
     Firstly, the entire concept of power management system  100  will be described. 
     Power management system  100  has power management unit  200 , server  300 , and device group  400 . Power management unit  200  transmits and receives data to and from device group  400 , and transmits and receives data to and from server  300 . Server  300  receives external information  101  and transmits owner information  102 , as well as receives information data  111  from power management unit  200  and transmits control data  112  to power management unit  200 . Device group  400  is constituted by multiple types of devices, and transmits and receives data to and from power management unit  200 . 
     From a functional view-point, server  300  has operational status managing part  301 , deterioration diagnosis part  302 , and high-value-added services part  303 . Operational status managing part  301  manages operation or power consumption of each device within device group  400 . For instance, if the device is a power generator, operational status managing part  301  manages a power generation amount of the device. 
     Deterioration diagnosis part  302  conducts deterioration diagnosis of each device within device group  400 . If the device is a battery cell, deterioration diagnosis part  302  conducts deterioration diagnosis of the battery cell. If the device generates an alternating-current (AC) power, deterioration diagnosis part  302  conducts deterioration diagnosis from high-frequency data of the AC power. If the devise is a solar panel, deterioration diagnosis part  302  conducts deterioration diagnosis of the panel. 
     High-value-added services part  303  determines whether or not each device within device group  400  needs maintenance, and predicts the time when the maintenance is needed. Furthermore, high-value-added services part  303  conducts high-efficient energy management. 
     Note that, operational status managing part  301 , deterioration diagnosis part  302 , and high-value-added services part  303  are configurations from a functional view of server  300 , but not a physical view. 
     External information  101  includes, for example, weather and disaster conditions, the presence or absence of construction work and a power failure, and a state of a transmission network. Server  300  acquires external information  101  periodically or as necessary. The information is converted into data, and then the data is transmitted to server  300  as data  113 . 
     Owner information  102  corresponds to operational status of each device within device group  400 , a prediction of maintenance time, information related to energy management consulting, and the like. Server  300  converts owner information  102  into data periodically or on demand, and transmits it to owners as data  114 . 
     The devices constituting device group  400  are classified into, for example, a device for creating energy, a device for consuming energy, a device for accumulating energy, a device for converting energy, and a device for managing these devices related to the energy. Device group  400  is constituted by multiple different types of devices. The different types are two or more. Accordingly, device group  400  may be constituted by three types of devices, or may be constituted by two types of devices. Device group  400  may include a device for creating energy and a device for consuming energy. Device group  400  may include a device for creating energy and a device for accumulating energy. Device group  400  may include a device for consuming energy and a device for accumulating energy. Device group  400  may include a device for creating energy, a device for consuming energy, and a device for accumulating energy. 
     In the exemplary embodiment, device group  400  comprises of, for example, solar panel  411 , maximum power point control device  412 , diesel generator  413 , AC-DC convertor  414 , transmission network  415 , switch  416 , base station  417 , battery managing system machine  418 , lithium-ion battery  419 , lead storage battery  420 , voltage meter  421 , switch  422 , and transmission network repeater  423 . The devices constituting device group  400  are not limited to these devices. 
     Solar panel  411  generates electric power by receiving sunlight. Maximum power point controller  412  extracts the electric power, which solar panel  411  generates, with high efficiency. Diesel generator  413  generates electric power by using a diesel engine. AC-DC converter  414  converts an alternating current generated by diesel generator  413  and an alternating current from transmission network  415  into a direct current. Transmission network  415  is a power system for conveying electricity. In this case, transmission network  415  includes a power system called a distribution network for conveying electricity from a distribution substation to each demand location, in addition to a power system for conveying electricity from a power plant to a power distribution substation. Switch  416  switches connection to AC-DC converter  414  from either diesel generator  413  or transmission network  415  electrically. Base station  417  is, for example, a base station of a mobile phone. Battery managing system machine  418  conducts management including control of charging and discharging lithium ion battery  419 . Lithium-ion battery  419  is a rechargeable battery using lithium ions. Lead storage battery  420  is a rechargeable battery using lead. Voltage meter  421  measures the voltage of lead storage battery  420 . Switch  422  selects whether either lithium-ion battery  419  or lead storage battery  420  is charged and discharged or neither lithium-ion battery  419  nor lead storage battery  420  are charged and discharged. Transmission network repeater  423  connects or cuts off transmission network  415 . 
     Solar battery panel  411  and diesel generator  413  are devices for creating energy. Transmission network  415 , itself, does not generate electric power, but it is categorized into a device for creating energy. This is because transmission network  415  is in common with a device for generating electricity from a view point of supplying energy. Base station  417  is a device for consuming energy. Lithium-ion batteries  419  and lead storage battery  420  are devices for accumulating energy. AC-DC converter  414  is a device for converting energy. Note that, the device for creating energy, which converts energy such as sunlight or light diesel oil into electric energy, differs from AC-DC convertor  414  in that it converts external energy of power management system  100  into internal energy of power management system  100 . Therefore, the devices are classified as the above. Maximum power point control device  412 , switch  416 , battery managing system machine  418 , voltage meter  421 , switch  422 , and the transmission network repeater  423  are devices for managing the other devices. 
     Note that, the devices each may be combined to constitute another device. For instance, solar panel  411  and maximum power point control device  412  are combined to constitute photovoltaic power generation unit  431 . Battery managing system machine  418  and lithium-ion battery  419  are combined to constitute lithium-ion battery unit  432 . Lead storage battery  420  and voltage meter  421  are combined to constitute lead storage battery unit  433 . 
     Power management unit  200  receives panel deterioration data  451  and power generation data  452  from solar panel  411 . 
     Power management unit  200  transmits and receives control and output data  453  to and from maximum power point control device  412 . 
     Power management unit  200  receives high frequency data  454  from diesel generator  413 , and transmits operation and stop data  455  to diesel generator  413 . High frequency data  454  is data capable of measuring deterioration of diesel generator  413 . As the deterioration of diesel generator  413  progresses, the vibration thereof is enlarged to increase high frequency components of the generated electric current. Thus, the deterioration status of diesel generator  413  can be noticed by using high frequency data  454 . Operation and stop data  455  is control data that operates and stops diesel generator  413 . 
     Power management unit  200  transmits switching data  456  to switch  416 . According to switching data  456 , switch  416  selects a device, which is to be connected to AC-DC convertor  414 , from diesel generator  413  and transmission network  415 . 
     Power management unit  200  transmits and receives control and output data  457  to and from AC-DC convertor  414 . 
     Power management unit  200  transmits and receives power grid data  458  to and from transmission network repeater  423 . 
     Power management unit  200  transmits and receives power control and operation status data  459  to and from base station  417 . 
     Power management unit  200  transmits and receives storage status and battery degradation data  460  to and from battery managing system machine  418 . 
     Power management unit  200  transmits switching data  461  to switch  422 . According to switching data  461 , switch  422  selects whether either lithium-ion battery  419  or lead storage battery  420  is charged and discharged or neither lithium-ion battery  419  nor lead storage battery  420  are charged and discharged. 
     Power management unit  200  receives battery degradation data  462  from lead storage battery  420 . 
     Power management unit  200  receives voltage data  463  from voltage meter  421 . 
     Power grid  480  is a conductor that connects between the devices, and transmits and receives electric power. 
     Note that, each device is allowed to transmit and receive status indication data and drive control data to and from the other devices as necessary. 
       FIG. 3  is a block diagram of a power management system in the exemplary embodiment. In  FIG. 3 , photovoltaic power generation unit  431  and lithium-ion battery unit  432  will be described as exemplary devices. 
     Power management unit  200  has first information data receiving part  221  for receiving power generation data  452  from photovoltaic power generation unit  431 , and first information data transmitting part  231  for transmitting the data to server  300 . Power management unit  200  has second information data receiving part  222  for receiving panel deterioration data  451  from photovoltaic power generation unit  431 , and second information data transmitting part  232  for transmitting the data to server  300 . 
     Power management unit  200  has third information data receiving part  223  for receiving storage status data  460   a  from lithium-ion battery unit  432 , and third information data transmitting part  233  for transmitting the data to server  300 . Power management unit  200  has fourth information data receiving part  224  for receiving battery degradation data  460   b  from lithium-ion battery unit  432 , and fourth information data transmitting part  234  for transmitting the data to server  300 . 
     Power management unit  200  has first control data receiving part  241  for receiving power generation control data  453   a  related to photovoltaic power generation unit  431  from server  300 , and first control data transmitting part  251  for transmitting the data to photovoltaic power generation unit  431 . 
     Power management unit  200  has second control data receiving part  242  for receiving control data  453   b  (control data such as preventing panel deterioration) with respect to panel deterioration related to photovoltaic power generation unit  431  from server  300 , and second control data transmitting part  252  for transmitting the data to photovoltaic power generation unit  431 . 
     Power management unit  200  has third control data receiving part  243  for receiving charge control data  460   c  related to lithium-ion battery unit  432  from server  300 , and third control data transmitting part  253  for transmitting the data to lithium-ion battery unit  432 . 
     Power management unit  200  has fourth control data receiving part  244  for receiving control data  460   d  (control data such as preventing battery degradation) with respect to battery degradation related to lithium-ion battery unit  432  from server  300 , and fourth control data transmitting part  254  for transmitting the data to lithium-ion battery unit  432 . 
     As above, power management unit  200  receives data related to status of each device from the respective devices and transmits the data to server  300 . 
     Power management unit  200  has controller  201 . Controller  201  will be described later. 
     Server  300  has data processing part  311 . Data processing part  311  obtains information from each device to produce control information for each device. More specifically, data processing part  311  firstly obtains operation status of an energy creation device, an energy accumulation device, an energy consumption device, an energy conversion device, and an energy management device based on data from the respective devices. Secondly, data processing part  311  calculates energy management information based on the operation status of the respective devices and external information  101 . Data processing part  311  determines control patterns capable of using energy appropriately from the energy management information. The control patterns include, for example, ON/OFF, an amount of electric energy, switching time of each device, and a combination of these values. Data processing part  311  produces control information to be transmitted to power management unit  200  based on the determined control pattern. 
     Note that, data processing part  311  may produce control information based on information not only between different types of devices but also between the same type of devices. The control information is information for controlling each device. 
     Server  300  has first information data receiving part  321  for receiving receive power generation data  452 , second information data receiving part  322  for receiving panel deterioration data  451 , third information data receiving part  323  for receiving storage status data  460   a , and fourth information data receiving part  324  for receiving battery degradation data  460   b . These data are transmitted to data processing part  311 . 
     Server  300  has first control data transmitting part  331  for transmitting power generation control data  453   a  transmitted from data processing part  311 , second control data transmitting part  332  for transmitting control data  453   b  with respect to panel deterioration, third control data transmitting part  333  for transmitting charge control data  460   c , and fourth control data transmitting part  334  for transmitting control data  460   d  with respect to battery degradation. These data are transmitted to power management unit  200 . 
     Furthermore, server  300  has external information receiving part  312 , management information transmitting part  313 , and storage part  314 . 
     External information receiving part  312  receives information update instruction  472  from controller  201  of power management unit  200  and receives data  113  in which external information  101  is converted into data. Storage part  314  stores data  113  received by external information receiving part  312  and data related to each device. At the time when data processing part  311  performs various calculations, storage part  314  transmits data  341 , which is required for the calculations, to data processing part  311 . 
     Management information transmitting part  313  receives information output instruction  473  from controller  201  and transmits data  114 , in which owner information  102  is converted into data, to an owner. 
     Controller  201  periodically transmits information update instruction  472  and information output instruction  473  to server  300 . Accordingly, data  113 , in which external information  101  stored in storage part  314  is converted into data, is periodically updated. Data  114 , in which owner information  102  is converted into data, is periodically transmitted to the owner. Data  114  is produced by data processing part  311  based on the status of each device or the like. 
     Note that, controller  201  may transmit information update instruction  472  and information output instruction  473  to server  300  as necessary. 
     Controller  201  causes data processing part  311  of server  300  to execute comparison instruction  471 . When receiving comparison instruction  471 , data processing part  311  compares the status of each device that is received from power management unit  200  with the information related to each device that is stored in storage part  314 , and produces a control signal for controlling each device. 
     In this way, a power management unit includes a part that transmits a first information data and a second information data to a server. The first information data relates to a first device for creating, consuming, or accumulating first energy. The second information data relates to a second device for creating, consuming, or accumulating second energy. Further, the power management unit includes a part that receives control data for controlling the first device and the second device from the server, and a part that transmits the control data to the first device and the second device. A power management method is a way of transmitting first information data and second information data from the power management unit to the server. Further, the power management method is a way of transmitting control data for controlling the first device and the second device from the server to the power management unit, and transmits the control data from the power management unit to the first device and the second device. The power management unit and the power management method can control information related to multiple types of devices to utilize energy efficiently. 
     Power management unit  200  and power management system  100  including power management unit  200  operate as mentioned above, but not limited to the embodiment shown in  FIG. 3 . Various variations may be employed. Hereinafter, the variations will be described. 
       FIG. 4  is a block diagram of a power management system in a first variation of the exemplary embodiment. The difference from  FIG. 3  is a way how to transmit and receive data between power management unit  200  and server  300 . Power management unit  200  of  FIG. 3  has parts for transmitting data to server  300  and parts for receiving data from server  300  data by data. On the other hand, in power management unit  200  of  FIG. 4 , the parts for transmitting data to server  300  are integrated into one part, and further the parts for receiving data from server  300  are integrated into one part device by device. Besides, transmission parts and receiving parts of server  300  are integrated device by device. Further, in power management unit  200  of  FIG. 4 , each data is transmitted and received through controller  201 . 
     Hereinafter, the variation will be described practically. 
     The respective types of power generation data  452  and panel deterioration data  451  from photovoltaic power generation unit  431  are conveniently identified by controller  201  and transmitted to first information data transmitting part  231  as first device status data  281 . First device status data  281  is transmitted from first information data transmitting part  231  to first information data receiving part  321  of server  300 . 
     Likewise, the respective types of storage status data  460   a  and battery degradation data  460   b  from lithium-ion battery unit  432  are also identified by controller  201  conveniently and transmitted to third information data transmitting part  233  as second device status data  282 . Second device status data  282  is transmitted from third information data transmitting part  233  to third information data receiving part  323  of server  300 . 
     Control data to be transmitted to photovoltaic power generation unit  431  is transmitted from first control data transmission portion  331  of server  300  as first device control data  283 , and received by first control data receiving part  241 . After that, first device control data  283  is transmitted from first control data receiving part  241  to controller  201 . If first device control data  283  is related to power generation control data, controller  201  transmits it to first control data transmitting part  251  as power generation control data  453   a . If first device control data  283  is related to control data with respect to panel deterioration, controller  201  transmits it to second control data transmitting part  252  as control data  453   b  with respect to panel deterioration. 
     Likewise, control data to be transmitted to lithium-ion battery unit  432  is transmitted from third control data transmitting part  333  of server  300  as second device control data  284 , and received by third control data receiving part  243 . After that, second device control data  284  is transmitted from third control data receiving part  243  to controller  201 . If second device control data  284  is related to charge control data, controller  201  transmits it to third control data transmitting part  253  as charge control data  460   c . If second device control data  284  is related to control data with respect to battery degradation, controller  201  transmits it to fourth control data transmitting part  254  as control data  460   d  with respect to battery degradation. 
     Power management system  100  in the first variation integrates the transmission parts and the receiving parts to and from the server, device by device, thereby reducing the number of these parts. 
       FIG. 5  is a block diagram of a power management system in a second variation of the exemplary embodiment. The difference from  FIG. 4  is a way how to further integrate the transmission parts and the receiving parts which transmit and receive data between power management unit  200  and server  300 . That is, the respective information data transmitted from photovoltaic power generation unit  431  and lithium-ion battery unit  432  are transmitted from first information data transmitting part  231  to first information data receiving part  321  as information data  285 . 
     The respective control data to be transmitted to photovoltaic power generation unit  431  and lithium-ion battery unit  432  are transmitted from first control data transmission portion  331  to first control data receiving part  241  as control data  286 . 
     The power management system in the second variation shown in  FIG. 5  is operated based on the power management system in first variation shown in  FIG. 4 . In the power management system in the first variation of  FIG. 4 , controller  201  is needed to identify which information it is, and then to operate according to the identification result. In addition to this, the power management system in the second variation shown in  FIG. 5  identifies which device data it is, and then operates according to the identification result. 
       FIG. 6  is a block diagram of a power management system in a third variation of the exemplary embodiment. The power management system in the third variation shown in  FIG. 6  is based on the power management system in the second variation shown in  FIG. 5 . To transmit and receive data between power management unit  200  and server  300 , In the power management system in the second variation shown in  FIG. 5 , power management unit  200  has first information data transmitting part  231  and first control data receiving part  241 . Thus, first information data transmitting part  231  transmits data and first control data receiving part  241  receives data individually. On the other hand, power management unit  200  in a fourth variation shown in  FIG. 6  transmits and receives data  287  to and from server  300  by data transmission and receiving part  255 . Server  300  transmits and receives data  287  to and from power management unit  200  by transmission and receiving part  335 . 
       FIG. 7  is a view showing a data configuration in the first variation of the exemplary embodiment. 
     Unitary data  500  has data signal  501  and data type signal  502 . Data signal  501  is a signal in which information to be conveyed is converted into a signal. For instance, a voltage value and a generation power value are corresponded. Data type signal  502  is a signal for identifying what type of information is conveyed. The type of information is, for example, voltage, panel deterioration, generation power, and the like. Unitary data  500 , which indicates what type of information is conveyed, is employed when data is transmitted and received between power management unit  200  in the first variation shown in  FIG. 4  and server  300 . That is, first device status data  281 , second device status data  282 , first device control data  283 , and second device control data  284  are transmitted and received in a unitary data  500  format shown in  FIG. 7 . 
       FIG. 8  is a view showing a data configuration in the second variation of the exemplary embodiment. 
     Unitary data  500  has device identification signal  503 , multiple data signals  501 , and multiple data type signals  502 . 
     Data signals  501  and data type signals  502  are the same as the data configuration in the first variation shown in  FIG. 7 . Device identification signal  503  indicates which device information it is. 
     In unitary data  500 , device identification signal  503  indicates a device, and data type signal  502  indicates what type of data it is. Data signals  501  and data type signals  502  are paired. Device identification signal  503  is added to multiple pairs of data signals  501  and data type signals  502 . 
     Since unitary data  500  shown in  FIG. 8  indicates which device signal it is, it is employed when data is transmitted and received between power management unit  200  in the second variation shown in  FIG. 5  and server  300 . That is, unitary data  500  shown in  FIG. 8  is used for information data  285  and control data  286 . 
     Note that, unitary data  500  shown in  FIG. 8  may also be employed when data is transmitted and received between power management unit  200  in the third variation shown in  FIG. 6  and server  300 . If a type of signal that corresponds to one device is single, the signal has a data configuration shown in  FIG. 9  described later. 
       FIG. 9  is a view showing another type of data configuration in the second variation of the exemplary embodiment. Unitary data  500  has data signal  501 , data type signal  502 , and device identification signal  503  one by one. The another type of data configuration in the second variation of the exemplary embodiment shown in  FIG. 9  is employed when data is transmitted and received between power management unit  200  in the second variation shown in  FIG. 5  or the third variation shown in  FIG. 6  and server  300 . 
     Note that, the data configurations shown in  FIGS. 7 to 9  are produced and decoded by controller  201  and data processing part  311 . 
     FIRST REFERENCE EXAMPLE 
       FIG. 10  is a schematic view of a solar panel unit in a first reference example. 
     Solar panel unit  900  has solar panel  901  and wind guard  902 . 
     Solar panel  901  converts solar light energy into electric energy. Wind guard  902  is attached to a back side surface of solar panel  901 . The back side surface of solar panel  901  is a surface directed to a ground side when plat solar panel  901  is installed. Wind guard  902  has a streamline shape. 
     Wind guard  902  prevents wind  903  from causing a turbulent flow on the back side surface of solar panel  901 . 
     SECOND REFERENCE EXAMPLE 
       FIG. 11  is a schematic view of a solar panel unit in a second reference example. 
     Solar panel unit  920  has solar panel  921 , support column  922 , and shaft  923 . 
     Solar panel  921  converts solar light energy into electric energy. Support column  922  rotatably holds solar panel  921  through shaft  923  as shown by arrow  925 . A tow-dot chain line in  FIG. 11  indicates a position when solar panel  921  is turned, i.e., a position when solar panel  921  is tilted horizontally. At this time, support column  922  moves downward. Solar panel  921  can move in both directions from the horizontal position illustrated by the two-dot chain line to the position illustrated by a solid line. Support column  922  is rotatable as shown by arrow  926 . 
     If wind  924  is strong, solar panel  921  is tilted horizontally to reduce the resistance of wind  924 . In the case where a wind power generator is installed near solar panel  921 , the angle of solar panel  921  can be changed by using generation power of the wind power generator. 
     The solar panel unit in the first reference example and the second reference example prevents destruction or breakages of a solar panel installed on an upper side of a street light, a street lamp, and the like. 
     INDUSTRIAL APPLICABILITY 
     According to the power management unit and the power management method of the present disclosure, information related to multiple types of devices can be controlled to utilize energy efficiently. Thus, the power management unit and the power management method are useful. 
     REFERENCE MARKS IN THE DRAWINGS 
     
         
           100  power management system 
           101  external information 
           102  owner information 
           111  information data 
           112  control data 
           113 , 114  data 
           200  power management unit 
           201  controller 
           221  first information data receiving part 
           222  second information data receiving part 
           223  third information data receiving part 
           224  fourth information data receiving part 
           231  first information data transmitting part 
           232  second information data transmitting part 
           233  third information data transmitting part 
           234  fourth information data transmitting part 
           241  first control data receiving part 
           242  second control data receiving part 
           243  third control data reception site 
           244  fourth control data receiving part 
           251  first control data transmitting part 
           252  second control data transmitting part 
           253  third control data transmitting part 
           254  fourth control data transmitting part 
           255  data transmission and receiving part 
           281  first device status data 
           282  second device status data 
           283  first device control data 
           284  second device control data 
           285  information data 
           286  control data 
           287  data 
           300  server 
           301  operational status managing part 
           302  deterioration diagnosis part 
           303  high-value-added services part 
           311  data processing part 
           312  external information receiving part 
           313  management information transmitting part 
           314  storage part 
           321  first information data receiving part 
           322  second information data receiving part 
           323  third information data receiving part 
           324  fourth information data receiving part 
           331  first control data transmitting part 
           332  second control data transmitting part 
           333  third control data transmitting part 
           334  fourth control data transmitting part 
           335  transmission and receiving part 
           341  data 
           400  device group 
           411  solar panel 
           412  maximum power point control device 
           413  diesel generator 
           414  AC-DC convertor 
           415  transmission network 
           416  switch 
           417  base station 
           418  battery managing system machine 
           419  lithium-ion battery 
           420  lead storage battery 
           421  voltage meter 
           422  switch 
           423  transmission network repeater 
           431  photovoltaic power generation unit 
           432  lithium-ion battery unit 
           433  lead storage battery unit 
           451  panel deterioration data 
           452  power generation data 
           453  control and output data 
           453   a  generation control data 
           453   b  control data with respect to panel deterioration 
           454  high frequency data 
           455  operation and stop data 
           456  switching data 
           457  control and output data 
           458  transmission network data 
           459  power control and operation status data 
           460  storage status and battery degradation data 
           460   a  storage status data 
           460   b  battery degradation data 
           460   c  charge control data 
           460   d  control data with respect to battery degradation 
           461  switching data 
           462  battery degradation data 
           463  voltage data 
           471  comparison instruction 
           472  information update instruction 
           473  information output instruction 
           480  power grid 
           500  unit data 
           501  data signal 
           502  data type signal 
           503  device identification signal 
           900  solar panel unit 
           901  solar panel 
           902  wind guard 
           903  wind 
           920  solar panel unit 
           921  solar panel 
           922  support column 
           923  shaft 
           924  wind 
           925 , 926  arrow