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1. 发明专利

JP2003224931A DISTRIBUTION SYSTEM LOAD ESTIMATING DEVICE 审中-公开
公开(公告)号：JP2003224931A
公开(公告)日：2003-08-08
申请号：JP2002018220
申请日：2002-01-28
申请人： HITACHI LTD , KANSAI ELECTRIC POWER CO
发明人： TOMITA YASUSHI , SAWA TOSHIYUKI , INOUE HIROSHI , IMAMURA YUZURU , FURUTA SHINJI
IPC分类号： H02J3/00
摘要： PROBLEM TO BE SOLVED: To attain highly precise estimation on fluctuations at predetermined time intervals, such as increments of one hour in the load of a transformer, so as to accommodate changes in social situations or life styles. SOLUTION: This device includes a consumer load estimating means 15 of estimating a daily load curve of each consumer connected to a transformer, and a transformer load estimating means 17 of estimating the daily load curve of the transformer, using the estimated results of the daily load curve of each consumer connected to the transformer. COPYRIGHT: (C)2003,JPO

2. 发明专利

JP2001339860A MONITOR/CONTROLLER AND SYSTEM STRUCTURE DETERMINATION METHOD FOR POWER SYSTEM 失效
公开(公告)号：JP2001339860A
公开(公告)日：2001-12-07
申请号：JP2000161108
申请日：2000-05-26
申请人： HITACHI LTD
发明人： HAYAMIZU MITSUO , IMAMURA YUZURU , MIYAJIMA TADASHI
IPC分类号： H02J13/00 , H02J3/00
摘要： PROBLEM TO BE SOLVED: To provide a monitor/controller and a system determination method for a power system by which the system can be switched properly for emergency restoration in the case of an accident, etc. SOLUTION: Candidate routes through which power can be supplied to load sections, which are objects of respective automatic allocation processes of routes according to a rule, are displayed. The proper route is selected by an operator among the displayed candidate routes and the routes for the other sections are allocated automatically in accordance with the rule.

3. 发明专利

JP2000287388A GRAPHIC USER INTERFACE 失效
公开(公告)号：JP2000287388A
公开(公告)日：2000-10-13
申请号：JP9131399
申请日：1999-03-31
申请人： HITACHI LTD
发明人： IZAWA SEIKI , IMAMURA YUZURU , OWAKI TAKASHI , SUZUKI HIDEAKI , HARADA YASUSHI
IPC分类号： G06F3/048 , G06F3/00 , H02J13/00
摘要： PROBLEM TO BE SOLVED: To obtain a graphic user interface which can search and display various kinds of data of many facilities in a large-scale system with less screen hopping and simple operations. SOLUTION: When 'SYSTEM MONITOR' is selected, an electric power station tree diagram display screen 401 and a monitored data display screen 402 are displayed, and the latter is divided into a monitored data list screen 402-1 and a particularly-monitored data display screen 402-2. Electric power station selecting TAB (4)-1 and data selecting TAB (4)-3 are each provided on the display screens 401, 402. When 'SYSTEM' is selected in the selecting TAB (4)-1, an electric station tree diagram (4)-2 grouped (controlled in a folder) in accordance with the connection of systems is displayed from the upper rank of voltage classes. For example, when an arbitrary electric station (500 kV-A1s/s) is selected in the electric station tree diagram (4)-2 and 'TM' is selected in the data selecting TAB (4)-3, the list of TM data of the A1s/s is displayed on the screen 402-1. By selecting the data of an arbitrary line from the list, a trend graph is displayed on the screen 402-2. The selecting TABs (4)-1, (4)-3 can each be selected independently.

4. 发明专利

JPH05292670A 失效
公开(公告)号：JPH05292670A
公开(公告)日：1993-11-05
申请号：JP9058792
申请日：1992-04-10
申请人： HITACHI LTD
发明人： KANAI MINORU , IMAMURA YUZURU , IWASHITA KIYOJI , TERADA YASUHIRO
IPC分类号： H02J3/12 , H02J3/38
摘要： PURPOSE:To maintain the voltage of a distribution system within a proper range when a dispersed power supply is connected to the distribution system and operated. CONSTITUTION:Dispersed power supplies 9a, 9b are connected to a distribution line 7b directly or through an AC converter 10. A voltage time waveform V2 and a current time waveform I2 in the vicinity of the node of the distribution line 7b and a current time waveform Id2 delivered between the distribution line 7b and the dispersed power supply 9b are detected by a voltage sensor 11 and current sensors 12, 13 and taken into a conatroller 14 at the time of the dispersed power supply 9b. A voltage value on the secondary side, the distribution system side, of a transformer 3 for the distribution of electrical energy is also detected by a voltage sensor 17 and taken into the controller 14. The controller 14 controls the dispersed power supplies 9a, 9b or the AC converter 10 on the basis of these input information. Accordingly, the voltage of a distribution system can be maintained within a proper range.

5. 发明专利

JPH0568344A DISTRIBUTION SYSTEM DISTRIBUTED POWER CONTROL SYSTEM 失效
公开(公告)号：JPH0568344A
公开(公告)日：1993-03-19
申请号：JP22704991
申请日：1991-09-06
申请人： HITACHI LTD
发明人： KANAI MINORU , HIRASAWA KUNIO , INAGAKI KEIZO , IMAMURA YUZURU , IWASHITA KIYOJI , KUDO HIROYUKI
IPC分类号： H02J3/46
摘要： PURPOSE:To prevent the decline in power quality and reliability of the distribu tion system due to a distributed power source and to operate the distribution system very efficiently by means of the distributed power source when the distributed power source is connected to the distribution system and is operated by the giving and receiving of power with the distribution system. CONSTITUTION:A distributed power source 9 is connected through a switch 8 to a distribution line 7b to be connected to a three-phase bus 5 of a transformer station 2. The voltage Vs of the distribution line 7b, the currents Is1, Is2 near a connection P between the distributed power source 9 and the distribution line 7b, and the giving and receiving current Id between the distributed power source 9 and the distribution system are detected by a voltage sensor 12 and current sensors 13, 14, 15 respectively and the detected outputs are inputted into a controller 11. Based on these inputted information, the controller 11 controls the distributed power source 9 or the connection between the distributed power source and the distribution line 7b.

6. 发明专利

JPH04348454A METHOD AND DEVICE FOR CONSTITUTION OF NETWORK 失效
公开(公告)号：JPH04348454A
公开(公告)日：1992-12-03
申请号：JP3403391
申请日：1991-02-28
申请人： HITACHI LTD
发明人： IMAMURA YUZURU , WATABE TEI , AMANO MASAHIKO , TAMURA SHIGERU , FUKUI CHIHIRO , KANAI MINORU , HIRASAWA KUNIO , KAWAKAMI JUNZO , HIRANO RYUZO
IPC分类号： G06F15/18 , G06F9/06 , G06G7/60 , G06N3/04 , G06N99/00
摘要： PURPOSE:To form an optimum network which contains many nodes and branches that can secure the connection among these nodes. CONSTITUTION:A connection unit 300 allocates 8 matrix consisting of a node serving as the start point set in a network where plural neurons are connected to each other and other nodes. Then the unit 300 allocates the bidirectional conduction states of branches where the nodes are connected to each other to the matrix. A control unit 400 decides the network constitution based on the matrix. Thus it is possible to apply a neural network receiving no influence of its scale to the decision of the optimum constitution a complicated and large- scale network.

7. 发明专利

JPH0312A PLANT MONITORING AND CONTROLLING DEVICE 失效
公开(公告)号：JPH0312A
公开(公告)日：1991-01-07
申请号：JP13262289
申请日：1989-05-29
申请人： HITACHI LTD
发明人： IMAMURA YUZURU , KUDO HIROYUKI , KAWAKAMI JUNZO
IPC分类号： A47C3/00 , A47C1/02 , G05B23/02 , G08B23/00 , G08B25/04
摘要： PURPOSE:To relieve a tension on an operator by using a chair which is vibrated, rotated and is changed in its posture in accordance with data relating to an operating condition of a plant and to mental and physiological conditions of the operator. CONSTITUTION:An operating condition of a plant 1 to be monitored and controlled is displayed on a monitor screen on a panel in front of an operator who is setting on a chair 4. Arms 5 which are incorporated to the chair are effective for stabilizing the posture of the operator, and further, suitable appliances provided to the chair are also effective for controlling the plant and for controlling the chair itself. The chair is set on a pedestal 3 so as to take motions such as vibration, rotation and the like. A computing and processing device 2 receives an operating condition of the plant and data relating to mental and physiological conditions of the operator, and delivers instructions for driving the chair in longitudinal vibration, rotation or the like. The computing an processing device 2 is arranged independently, or is disposed in the chair 4, the pedestal 3 or the front panel, similar to the monitor screen. The operating condition of the plant 1 is turned into an oscillation of the chair of the like, and accordingly, if the operator has only a bodily sensation of the rhythm of the oscillation, it is not necessary for the operator to always watch screens on the panel.

8. 发明专利

JPS63310333A LOAD INTERCHANGE MODE DETERMINING SYSTEM FOR POWER DISTRIBUTION SYSTEM 失效
公开(公告)号：JPS63310333A
公开(公告)日：1988-12-19
申请号：JP14312087
申请日：1987-06-10
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： IMAMURA YUZURU , KAWAKAMI JUNZO , HIRANO RYUZO , UNOTSU TOSHIHARU
IPC分类号： H02J3/00
摘要： PURPOSE:To raise processing efficiency by immediately forming an optimum combination out of combinations of many load zones and adjacent power distribution line systems. CONSTITUTION:More suitable assignment than normal one can be performed by sequentially selecting load zones to which highly probable one can be applied as compared with a simultaneous study of all zones to be interchanged in the process of the assignment. (The process is finished when power distribution line systems to be assigned to all load zones are determined as designated in a block 101). Accordingly, the assigned section is sequentially removed from the load zone to be interchanged and to be processed, and associated with the adjacent power distribution line systems. These load zones to be interchanged are clearly modeled by the process in a block 102. The adjacent power distribution line systems which can be supplied to the load zones are extracted in a block 103, and either one is selected based on the information in a block 104.

9. 发明专利

JP2003079071A Method and device for estimating condition of power distribution system 有权
标题翻译：用于估计功率分配系统条件的方法和装置
公开(公告)号：JP2003079071A
公开(公告)日：2003-03-14
申请号：JP2001262628
申请日：2001-08-31
申请人： Hitachi Information & Control Systems Inc , Hitachi Ltd , 株式会社日立情報制御システム , 株式会社日立製作所
发明人： IMAMURA YUZURU , TERUNUMA YOSHIO , TOMITA YASUSHI
IPC分类号： H02J13/00 , H02J3/00
摘要： PROBLEM TO BE SOLVED: To estimate highly precisely a section load based on a limited measured information. SOLUTION: The condition estimating method consists in measuring an electric current Is(t) supplied from a distribution line 210, computing the load current estimated value I1'(t), I2'(t) and dispersion ΔI1'(t), ΔI2'(t) of each section based on the estimated value Nj(t) and its estimated accuracy ΔNj(t) of diurnal load variation characteristics by the classification of consumers included in each section i, finding the estimated value Is'(t) of the supplied current by integrating a load current estimated value of each section, and finding a compensating value of each section by distributing the deviation between the measured value and estimated value of the supplied current among sections based on the dispersion ΔI1'(t), ΔI2'(t), thereby correcting the load current estimated value of each section by the compensating value of each section so that the load current or power in each section is estimated.
摘要翻译：要解决的问题：基于有限的测量信息高精度地估计节段负载。解决方案：条件估计方法包括测量从分配线210提供的电流Is（t），计算负载电流估计值I1'（t），I2'（t）和色散ΔI1'（t），ΔI2' （t）根据每个部分i中包含的消费者的分类的估计值Nj（t）及其估计的昼夜负荷变动特性的精度ΔNj（t），求出估计值Is'（t）通过对每个部分的负载电流估计值进行积分来提供电流，并且基于色散ΔI1'（t），ΔI2'分配各部分之间的供给电流的测量值和估计值之间的偏差来求出每个部分的补偿值（t），从而通过每个部分的补偿值来校正每个部分的负载电流估计值，从而估计每个部分的负载电流或功率。

10. 发明专利

JP2000245064A STATE ESTIMATION EQUIPMENT OF DISTRIBUTION SYSTEM AND ITS METHOD 失效
公开(公告)号：JP2000245064A
公开(公告)日：2000-09-08
申请号：JP4100699
申请日：1999-02-19
申请人： HITACHI LTD
发明人： IMAMURA YUZURU , TERUNUMA YOSHIO , NAGAO KOICHI , HAYAMIZU MITSUO
IPC分类号： H02J13/00 , H02J3/00
摘要： PROBLEM TO BE SOLVED: To enable high precise state estimation of a distribution system by adequately processing calculation and correction of the section power flow-in value which is the total sum of a plurality of power flow-in in a section, about each section. SOLUTION: This state estimation equipment of distribution system distributes the measured value of power to be sent to each section of a distribution line where a distribution system is divided. A means 110 calculates dispersion (distribution) of flow-in power in each section, on the basis of sample information of power value in each section or measured information of specially high consumers. A means 140 obtains an initial value and a correction ratio of the power in each section on the basis of the dispersion, and calculates a correction value of the power of each section. A means 115 obtains a flow-in power by adding the correction value to the initial value, and estimates the power to be sent out. A means 520 obtains mismatch between the estimated value of the power to be sent out and a practically measured value. When the mismatch is larger than a specified value, process is repeated by setting the estimated value as an initial value.

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