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1. 发明专利

JP2009188935A Wireless communication system, and electric supply monitoring and controlling system using same 有权
标题翻译：无线通信系统，以及使用其的电力监控和控制系统
公开(公告)号：JP2009188935A
公开(公告)日：2009-08-20
申请号：JP2008029487
申请日：2008-02-08
申请人： Hitachi Ltd , Kansai Electric Power Co Inc:The , Nec Corp , Oi Electric Co Ltd , 大井電気株式会社 , 日本電気株式会社 , 株式会社日立製作所 , 関西電力株式会社
发明人： YAMAGUCHI DAISUKE , MAEKAWA KOJI , HAHAKABE KEN , FUJIWARA MASAKI , ABE MAKOTO , YOSHINO ISAO , HIRANO TAKASHI , MATSUZAKI TAKAO , TSUNEMATSU NOBUMOTO
IPC分类号： H04W40/02 , H04M11/00 , H04W88/04
CPC分类号： Y02D70/00 , Y02D70/30
摘要： PROBLEM TO BE SOLVED: To enable to carry out proper setting easily and quickly when assembling a new unit electric power meter to a network in an electric supply monitoring and controlling system can carry out a remote meter reading. SOLUTION: Various kinds of settings are carried out to unit electric power meters T1-12 to be newly installed from a set up tool, and starting operation is carried out. Then, a radio wave situation by communication between adjacent stations is measured, and jump-transmission of a registration request is carried out by relaying the unit electric power meters T3-12 with the highest electric field intensity. In response to this, a gateway GWb and a server apparatus 1 respond a registration response via a transmission path of the registration request or a reconstructed transmission path (reconstructed T4-11 in Fig.5). Therefore, setting can be carried out easily and quickly without measuring a surrounding radio wave situation by an operator and without setting the unit electric power meter to be hanged each time. Further, the unit electric power meter can be hanged to a proper station, such as a station with the highest electric field intensity. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了能够在电力监控系统中组装新的单位电表时容易，快速地进行适当的设置，可以进行远程抄表。
解决方案：对从设置工具新安装的单位电力表T1-12进行各种设置，并进行启动操作。然后，测量相邻站之间的通信的无线电波状态，并通过中继具有最高电场强度的单位电力表T3-12来执行登记请求的跳跃。响应于此，网关GWb和服务器装置1经由注册请求或重构的传输路径的传输路径（图5中的重建T4-11）来响应注册响应。因此，无需测量操作者周围的无线电波情况，并且不需要每次将单元电表设置为挂起，所以可以容易且快速地进行设置。此外，单位电表可以悬挂在适当的电台，如电场强度最高的电台。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2009188934A Communication system and feed supervisory control system using the same 有权
标题翻译：通信系统和进给监控系统
公开(公告)号：JP2009188934A
公开(公告)日：2009-08-20
申请号：JP2008029486
申请日：2008-02-08
申请人： Hitachi Ltd , Kansai Electric Power Co Inc:The , Nec Corp , Oi Electric Co Ltd , 大井電気株式会社 , 日本電気株式会社 , 株式会社日立製作所 , 関西電力株式会社
发明人： YAMAGUCHI DAISUKE , MAEKAWA KOJI , HAHAKABE KEN , FUJIWARA MASAKI , ABE MAKOTO , YOSHINO ISAO , HIRANO TAKASHI , MATSUZAKI TAKAO , TSUNEMATSU NOBUMOTO
IPC分类号： H04M11/00 , H04Q9/00
摘要： PROBLEM TO BE SOLVED: To reduce traffic while transmitting meter-reading data reliably in a feed supervisory control system capable of performing meter-reading remotely.
SOLUTION: In a feed supervisory control system, a number of unit wattmeters T, namely terminal stations, are arranged in a tree structure in a server device 1 for managing a network, and each unit wattmeter T performs fixed-time reporting toward the server device 1. In this case, daily serial number management is performed to data reported at a fixed time from each unit wattmeter T at the side of the server device 1. When the number is skipped, it is determined that data have not arrived, thus requesting the retransmission of the data. Also, event data to be transmitted as required are retransmitted simultaneously with the next fixed-time reporting data, thus allowing the server device 1 to eliminate the need for returning ACK to the fixed-time report data and the event data each time, and reducing traffic while transmitting data reliably even in a situation that a number of terminal stations are installed for a communication line of a PHS with a low rate.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了在能够远程执行读表的馈送监控系统中可靠地传送抄表数据，减少流量。解决方案：在进料监控系统中，多台单位瓦特T（即终端站）以服务器装置1中的树形结构布置，用于管理网络，并且每个单位瓦特计T执行固定时间报告服务器装置1.在这种情况下，对服务器装置1侧的每个单位瓦特计T在固定时间报告的数据进行每日序列号管理。当跳过该数字时，确定数据未到达，从而请求重传数据。此外，根据需要发送的事件数据与下一个固定时间报告数据同时重发，从而允许服务器设备1每次都不需要向固定时间报告数据和事件数据返回ACK，并且减少即使在为低速率的PHS的通信线路安装了多个终端站的情况下也能可靠地发送数据。版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2009118170A Radio communication system, and information communication system and feeding surveillance control system using radio communication system 有权
标题翻译：无线电通信系统，信息通信系统和使用无线电通信系统的馈线监控系统
公开(公告)号：JP2009118170A
公开(公告)日：2009-05-28
申请号：JP2007288856
申请日：2007-11-06
申请人： Hitachi Ltd , Kansai Electric Power Co Inc:The , Nec Corp , Oi Electric Co Ltd , 大井電気株式会社 , 日本電気株式会社 , 株式会社日立製作所 , 関西電力株式会社
发明人： YAMAGUCHI DAISUKE , MAEKAWA KOJI , HAHAKABE KEN , FUJIWARA MASAKI , ABE MAKOTO , YOSHINO ISAO , HIRANO TAKASHI , MATSUZAKI TAKAO
IPC分类号： H04L12/44
摘要： PROBLEM TO BE SOLVED: To quickly perform regular collection of meter-reading data from the unit wattmeter of each house, and to rapidly control open loads or the like in a feeding surveillance control system enabling remote meter reading.
SOLUTION: Under normal conditions, meter-reading data from unit wattmeters T1-1, T1-2, ... and the like at a terminal side are successively merged to those at upper unit wattmeters T2-1, T2-2, ... and the like for data collection in a server device 1 from gateways GWa, GWb. In emergency, for example, for transmitting omitted meter-reading data and controlling power supply and power cut following entering and leaving, the unit wattmeter T1-12 jumps for transmission and reception via a unit wattmeter T3-12 in a reachable range, thus regularly and quickly performing the regular collection of meter-reading data and the distribution of control data, and speedily transmitting data in emergency and abnormality.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：快速执行每个房屋的单位瓦特计定期收集仪表读数据，并在允许远程抄表的进料监视控制系统中快速控制开启负载等。解决方案：在正常条件下，终端侧的单位电表T1-1，T1-2，...等的读表数据被连续地并入上位单位功率表T2-1，T2-2 ，...等，用于从网关GWa，GWb在服务器设备1中进行数据收集。在紧急情况下，例如，为了发送省略的读数数据和控制进入和离开后的电源和断电，单元瓦特计T1-12通过单位瓦特计T3-12在可达到的范围内跳转以进行发送和接收，从而定期并迅速执行抄表数据的定期收集和控制数据的分配，并在紧急情况和异常情况下快速发送数据。版权所有（C）2009，JPO＆INPIT

4. 发明专利

JP2009188930A Communication system, power feeding supervisory and control system using the same, and method of updating firmware in the communication system 有权
标题翻译：通信系统，使用该功能的供电监控和控制系统以及在通信系统中更新固件的方法
公开(公告)号：JP2009188930A
公开(公告)日：2009-08-20
申请号：JP2008029409
申请日：2008-02-08
申请人： Hitachi Ltd , Kansai Electric Power Co Inc:The , Nec Corp , Oi Electric Co Ltd , 大井電気株式会社 , 日本電気株式会社 , 株式会社日立製作所 , 関西電力株式会社
发明人： YAMAGUCHI DAISUKE , MAEKAWA KOJI , HAHAKABE KEN , FUJIWARA MASAKI , ABE MAKOTO , YOSHINO ISAO , HIRANO TAKASHI , MATSUZAKI TAKAO , TSUNEMATSU NOBUMOTO
IPC分类号： H04L12/46 , G06F9/445 , G06F11/00 , H04W4/04 , H04W16/26 , H04W24/00 , H04W84/12
摘要： PROBLEM TO BE SOLVED: To enable a power feeding supervisory and control system for performing remote meter-reading to update firmware without trouble to visit a unit wattmeter of each house. SOLUTION: In the power feeding supervisory and control system in which unit wattmeters that become a number of terminal stations are arrayed in a tree shape from a server device via a gateway, firmware for updating is transmitted from the server device while being divided into blocks each having a predetermined data amount and adding serial numbers thereto. In a radio communication apparatus 5 of the unit wattmeter that receives the firmware, a radio communication control section 12 sequentially stores the blocks in a buffer memory 16 and also relays the transmission thereof to a low-order side unit wattmeter T. When a maker ID or a program ID is correspondent, the radio communication control section 12 then confirms stored contents in the buffer memory 16 and when any serial number is missed, retransmission is requested only for such a block. Thus, traffic is also suppressed. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了实现远程抄表的供电监控系统更新固件，无需访问每个房屋的单位瓦特表。
解决方案：在成为多个终端站的单位功率表通过网关从服务器设备以树形排列的供电监控系统中，用于更新的固件从服务器设备被分配而被分割分成具有预定数据量的块并向其中添加序列号。无线电通信控制部分12在接收固件的单位瓦特计的无线电通信装置5中顺序地将这些块存储在缓冲存储器16中，并将其传输中继到低阶侧单位瓦特计T.当制造者ID 或节目ID相对应，则无线电通信控制部分12然后确认缓冲存储器16中存储的内容，并且当丢失任何序列号时，仅为这种块请求重传。因此，交通也被抑制。版权所有（C）2009，JPO＆INPIT

5. 发明专利

JP2009118172A Radio communication system, and information communication system and feeding surveillance control system using radio communication system 有权
标题翻译：无线电通信系统，信息通信系统和使用无线电通信系统的馈线监控系统
公开(公告)号：JP2009118172A
公开(公告)日：2009-05-28
申请号：JP2007288860
申请日：2007-11-06
申请人： Hitachi Ltd , Kansai Electric Power Co Inc:The , Nec Corp , Oi Electric Co Ltd , 大井電気株式会社 , 日本電気株式会社 , 株式会社日立製作所 , 関西電力株式会社
发明人： YAMAGUCHI DAISUKE , MAEKAWA KOJI , HAHAKABE KEN , FUJIWARA MASAKI , ABE MAKOTO , YOSHINO ISAO , HIRANO TAKASHI , MATSUZAKI TAKAO
IPC分类号： H04L12/44 , H04B7/24 , H04M11/00 , H04W16/26
摘要： PROBLEM TO BE SOLVED: To smoothly and reliably perform regular collection of meter-reading data, the distribution of control data, or the like to the unit wattmeter of each house in a feeding surveillance control system enabling remote meter reading.
SOLUTION: In respective unit wattmeters T1-1, T1-2, ... and the like disposed in a tree from gateways GWa, GWb, a main telephone number (upper stage in Fig.) used under normal conditions and a subtelephone number (lower stage in Fig.) used under faulty conditions are preset, when transferring data in a PHS transceiver mode. When a fault occurs in the unit wattmeter T3-5, the unit wattmeter T2-10 under the unit wattmeter T3-5 is changed to the telephone number of a subroute to call the unit wattmeters T4-4, T3-4, T2-8, ... and the like of the subroute, thus smoothly and reliably performing the regular collection of meter-reading data, the distribution of control data, or the like without delay.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：能够平稳可靠地在允许远程抄表的进给监视控制系统中定期收集抄表数据，控制数据等的分配给每个房屋的单位瓦特计。解决方案：在正常条件下使用的主电话号码（图中的上段）和网关GWa，GWb的树中设置的各单位功率表T1-1，T1-2，...等在PHS收发模式下传输数据时，预设了故障条件下使用的子电话号码（图中下级）。当单位瓦特计T3-5发生故障时，单位瓦特计T3-5下的单位瓦特T2-10将更改为子路由的电话号码，以呼叫单位瓦特表T4-4，T3-4，T2-8 ，...等，从而平稳且可靠地无延迟地平稳且可靠地执行抄表数据的正常收集，控制数据的分配等。版权所有（C）2009，JPO＆INPIT

6. 发明专利

JP2009188929A Communication system and information communication system using the same, and feeding supervisory control system 有权
标题翻译：通信系统和使用该通信系统的信息通信系统和进料监控系统
公开(公告)号：JP2009188929A
公开(公告)日：2009-08-20
申请号：JP2008029408
申请日：2008-02-08
申请人： Hitachi Ltd , Kansai Electric Power Co Inc:The , Nec Corp , Oi Electric Co Ltd , 大井電気株式会社 , 日本電気株式会社 , 株式会社日立製作所 , 関西電力株式会社
发明人： YAMAGUCHI DAISUKE , MAEKAWA KOJI , HAHAKABE KEN , FUJIWARA MASAKI , ABE MAKOTO , YOSHINO ISAO , HIRANO TAKASHI , MATSUZAKI TAKAO , TSUNEMATSU NOBUMOTO
IPC分类号： H04M11/00 , G04G5/00 , G04R20/14 , G08C15/00 , H04Q9/00
摘要： PROBLEM TO BE SOLVED: To make a clock being a reference for the fixed-time meter-reading and fixed-time transmission of a unit wattmeter in each house in a feeding supervisory control system for remote meter-reading cope with a low cost. SOLUTION: An NTP server 1 gives a time update instruction to a gateway GWa connected thereto by a wire, such as an intracompany optical fiber network at a time t0 that becomes prescribed periodic timing such as once a day, and successively puts the time of low-order unit wattmeters T5-1, T5-2;T4-1, T4-2, T4-3, T4-4 right by radio from the gateway GWa that has received the time update instruction, thus using the accurate clock in common even in an inexpensive network configuration without connecting each unit wattmeter T to a high-cost network such as ISDN capable of acquiring accurate time information and mounting high-cost equipment for acquiring the accurate time information of a GPS receiver or the like. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了使远程抄表的供电监控系统中的每个房屋中的单位瓦特计的固定时间抄表和固定时间传输的时钟成为参考，应对低成本。
解决方案：NTP服务器1通过诸如公共内光纤网络的线路（例如公共内光纤网络）在连接到其的网关GWa给出时间更新指令，时间t0变成规定的周期性定时，例如每天一次，并且连续放置低端单位功率表T5-1，T5-2; T4-1，T4-2，T4-3，T4-4的时间由接收到时间更新指令的网关GWa通过无线电，从而使用精确的时钟即使在廉价的网络配置中也是如此，而不将每个单位瓦特计T连接到能够获取准确的时间信息的高成本网络（例如ISDN），并且安装用于获取GPS接收机等的准确时间信息的高成本设备。版权所有（C）2009，JPO＆INPIT

7. 发明专利

JP2009140184A Wireless communication system 有权
标题翻译：无线通信系统
公开(公告)号：JP2009140184A
公开(公告)日：2009-06-25
申请号：JP2007315117
申请日：2007-12-05
申请人： Hitachi Ltd , Kansai Electric Power Co Inc:The , Nec Corp , Oi Electric Co Ltd , 大井電気株式会社 , 日本電気株式会社 , 株式会社日立製作所 , 関西電力株式会社
发明人： YAMAGUCHI DAISUKE , MAEKAWA KOJI , HAHAKABE KEN , FUJIWARA MASAKI , ABE MAKOTO , YOSHINO ISAO , HIRANO TAKASHI , MATSUZAKI TAKAO , TSUNEMATSU NOBUMOTO
IPC分类号： G08C25/00 , G08C17/00 , H04Q9/00 , H04W4/04
摘要： PROBLEM TO BE SOLVED: To certainly collect necessary data by an aggregator without increasing communication traffic or a processing load of the aggregator. SOLUTION: This wireless communication system has: a collection server SV collecting meter reading data; and a large number of terminal stations A, B, C, etc. wirelessly communicably connected to the collection server SV through a gateway, periodically transmitting the meter reading data to the collection server SV. The collection server SV has: a data confirmation part 13 confirming a periodic arrival situation of the meter reading data from each the terminal station A, B, C, etc. with reception of the meter reading data; and a resending request part 14 generating a communication signal for requesting data resending from the specific terminal station when lack of the meter reading data is confirmed about the specific terminal station by the data confirmation part 13. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：无需增加聚合器的通信流量或处理负荷，就可以通过聚合器收集必要的数据。
解决方案：该无线通信系统具有：收集服务器SV收集抄表数据; 以及通过网关无线通信地与收集服务器SV连接的大量终端站A，B，C等，周期性地向收集服务器SV发送抄表数据。收集服务器SV具有：数据确认部13，其通过接收到抄表数据来确认来自终端站A，B，C等的每个终端站的抄表数据的周期性到达情况; 以及重发请求部分14，当数据确认部分13确认关于特定终端站的缺乏抄表数据时，生成用于请求从特定终端站重新发送数据的通信信号。（C）2009年， JPO和INPIT

8. 发明专利

JP2009188920A Radio communication system and power feeding supervisory and control system using the same 有权
标题翻译：无线电通信系统和功率输入监控和使用该控制系统的控制系统
公开(公告)号：JP2009188920A
公开(公告)日：2009-08-20
申请号：JP2008029264
申请日：2008-02-08
申请人： Hitachi Ltd , Kansai Electric Power Co Inc:The , Nec Corp , Oi Electric Co Ltd , 大井電気株式会社 , 日本電気株式会社 , 株式会社日立製作所 , 関西電力株式会社
发明人： YAMAGUCHI DAISUKE , MAEKAWA KOJI , HAHAKABE KEN , FUJIWARA MASAKI , ABE MAKOTO , YOSHINO ISAO , HIRANO TAKASHI , MATSUZAKI TAKAO , TSUNEMATSU NOBUMOTO
IPC分类号： H04Q9/00 , G08C15/00 , H04M11/00 , H04W4/04
摘要： PROBLEM TO BE SOLVED: To perform a communication even without knowing an original telephone number when performing setting or sucking-up of non-delivery data while using a dedicated tool for a unit wattmeter that performs remote meter-reading.
SOLUTION: In addition to a telephone number (an upper stage within a circle of each unit wattmeter T) to be ordinarily used for transmitting meter-reading data to a server device 1 or for receiving control data, a sub telephone number (lower stage) is set. The sub telephone number is constituted of lower four digits of a number, such as e.g., a serial number, which can be uniquely derived according to a prespecified calculation method based on specific data added to a machine body. Furthermore, the serial number is set as an additional telephone number, and transmitted within a message. A worker therefore can easily know the sub telephone number by watching a manufacture name plate or the like and can accurately designate terminal stations (unit wattmeters T) over the number of accommodations using sub telephone numbers.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：在使用执行远程抄表的单位瓦特计的专用工具的同时，在执行设定或吸收不送货数据时，即使不知道原始电话号码也可进行通信。
解决方案：除了通常用于向计算机读取数据发送到服务器设备1或用于接收控制数据的电话号码（每个单位瓦特计T的圆圈内的上段）之外，还包括副电话号码下阶段）设置。子电话号码由诸如序列号的数字的低四位数构成，其可以根据添加到机器主体的特定数据根据预先指定的计算方法唯一导出。此外，将序列号设置为附加电话号码，并在消息内发送。因此，工人可以通过观看制造名牌等来容易地知道子电话号码，并且可以使用子电话号码准确地指定终端站（单位电表T）。版权所有（C）2009，JPO＆INPIT

9. 发明专利

JP2009159758A Switch control system and its switching control method 有权
标题翻译：开关控制系统及其开关控制方法
公开(公告)号：JP2009159758A
公开(公告)日：2009-07-16
申请号：JP2007336566
申请日：2007-12-27
申请人： Hitachi Ltd , Kansai Electric Power Co Inc:The , Nec Corp , Oi Electric Co Ltd , 大井電気株式会社 , 日本電気株式会社 , 株式会社日立製作所 , 関西電力株式会社
发明人： YAMAGUCHI DAISUKE , MAEKAWA KOJI , HAHAKABE KEN , FUJIWARA MASAKI , ABE MAKOTO , YOSHINO ISAO , HIRANO TAKASHI , MATSUZAKI TAKAO , TSUNEMATSU NOBUMOTO
IPC分类号： H02J13/00 , H02J3/00
CPC分类号： Y02E60/7846 , Y02E60/7853 , Y04S40/125 , Y04S40/126
摘要： PROBLEM TO BE SOLVED: To provide a switch control system and its switching control method, which sets a current passing time zone according to a change of a power rate contract type, etc., without a trouble and installment of meters, such as a timer, to enable independent switching control over a switch. SOLUTION: The switch control system includes: the switch 28, an ON time zone flag memory unit 24 which stores a flag that defines the ON time zone of the switch 28; a control unit 22 which carries out switchover between a time switch terminal station mode, in which the ON time zone flag memory unit 24 is checked to control the switching operation of the switch 28, and a normal terminal station mode, in which the switching operation of the switch 28 is controlled based on a switching control signal requiring the switch 28 to carry out switching operation, and to execute either of the modes; and a time switch terminal station flag memory unit 25 which stores a time switch terminal station flag that defines a station mode to be executed by the control unit 22. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种开关控制系统及其开关控制方法，其根据电力合同类型等的变化设定电流通过时间段，而不会出现故障和安装仪表，例如作为定时器，以实现对开关的独立切换控制。开关控制系统包括：开关28，存储定义开关28的接通时间区域的标志的接通时间域标志存储单元24; 控制单元22，其在检查了ON时间段标志存储器单元24的时间切换终端站模式以控制开关28的切换操作之间执行切换和正常终端站模式，其中切换操作基于需要开关28进行开关动作的切换控制信号进行开关28的控制，并且执行模式之一。以及时间切换终端站标志存储单元25，其存储定义要由控制单元22执行的站模式的时间切换终端站标志。（C）版权所有（C）2009，JPO＆INPIT

10. 发明专利

JP2009142042A Switch control system, automatic metering system, and current value monitoring method 有权
标题翻译：开关控制系统，自动计量系统和电流值监测方法
公开(公告)号：JP2009142042A
公开(公告)日：2009-06-25
申请号：JP2007315118
申请日：2007-12-05
申请人： Hitachi Ltd , Kansai Electric Power Co Inc:The , Nec Corp , Oi Electric Co Ltd , 大井電気株式会社 , 日本電気株式会社 , 株式会社日立製作所 , 関西電力株式会社
发明人： YAMAGUCHI DAISUKE , MAEKAWA KOJI , HAHAKABE KEN , FUJIWARA MASAKI , ABE MAKOTO , YOSHINO ISAO , HIRANO TAKASHI , MATSUZAKI TAKAO , TSUNEMATSU NOBUMOTO
IPC分类号： H02J13/00 , G06Q50/00 , G06Q50/06
摘要： PROBLEM TO BE SOLVED: To safely open and close a switch without spending time and effort, without newly arranging current sensors, and by grasping a load current of a wiring system. SOLUTION: The automatic metering system includes a collection server SV for collecting metering data, and a large number of terminal stations A, B, C... which are communicatively connected to the collection server SV, and connected with power meters 24 and the switches 25. Each terminal station includes a switch control part 221, and the switch control part 221 controls the switch 25 so as to be brought into an open state from a closed state when it is determined that a load current value of the siring system is not higher than a prescribed threshold. The maximum value of a current present value which is estimated on the basis of a degree of an increase in a count value of the power meter 24 is used as the load current value used for this determination. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：在不花费时间和精力的情况下安全地打开和关闭开关，而不需要新安排电流传感器，并且通过掌握布线系统的负载电流。
解决方案：自动计量系统包括用于收集计量数据的收集服务器SV以及与收集服务器SV通信连接并与功率计24连接的大量终端站A，B，C ... 开关25.每个终端站包括开关控制部分221，并且开关控制部分221控制开关25，以便当确定所述开关25的负载电流值被确定为处于关闭状态时处于打开状态系统不高于规定的阈值。使用基于功率计24的计数值的增加程度而推定的当前当前值的最大值作为用于该判定的负载电流值。版权所有（C）2009，JPO＆INPIT

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