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71. 发明专利

JPH08308108A METHOD AND DEVICE FOR PREDICTING ELECTRIC POWER DEMAND 失效
公开(公告)号：JPH08308108A
公开(公告)日：1996-11-22
申请号：JP10341695
申请日：1995-04-27
申请人： HITACHI LTD
发明人： ISHIDA TAKAHARU , FUKUI CHIHIRO
IPC分类号： H02J3/00
摘要： PURPOSE: To improve the power demand prediction accuracy of an electric power demand predicting device on a power system by accurately modeling the relation between the past demand of the system and factors affected the past demand. CONSTITUTION: An electric power demand predicting device is composed of a history data base recording the past electric power demand fetched from an objective power system and factors affected the demand, prediction executing device 105 which predicts a device which fetches affected factors for predicting the electric power demand of the system by using a model created by means of a predicting model creating and updating device which creates a data pre- processor predicting model for processing the data recorded in the data base to an easily usable form for predicting the demand, and actual demand fetching device which fetches an actual demand after prediction. Therefore, the future electric power demand of the system can be found with high accuracy based on the relation between the past electric power demand of the system and factors affected the demand.

72. 发明专利

JPH08130828A METHOD AND DEVICE FOR MONITORING VOLTAGE STABILITY OF POWER SYSTEM 失效
公开(公告)号：JPH08130828A
公开(公告)日：1996-05-21
申请号：JP27088894
申请日：1994-11-04
申请人： HITACHI LTD
发明人： ISHIDA TAKAHARU , FUKUI CHIHIRO
IPC分类号： H02J13/00 , H02J3/00
摘要： PURPOSE: To enable a voltage stability monitoring device which monitors the voltage stability of a power system to easily and quickly judge the voltage stability of the load bus of the power system. CONSTITUTION: The voltage stabilizing state of a power system to be monitored is judged from the differential information of PV curves by calculating the tidal current of a noticeable load bus in the power system from which the voltage stabilized state is to be obtained based on reference buses at, at least, two points. Therefore, highly accurate stability information can be obtained with a small mount of calculation as compared with the conventional judgment method.

73. 发明专利

JPH06149756A METHOD AND DEVICE FOR DECENTRALIZED INFORMATION PROCESSING 失效
公开(公告)号：JPH06149756A
公开(公告)日：1994-05-31
申请号：JP30557692
申请日：1992-11-16
申请人： HITACHI LTD
发明人： FUKUI CHIHIRO , WATABE TEI , SHIKAYAMA MASAHIRO , KAWAKAMI JUNZO
IPC分类号： G06F13/00 , G06F15/16 , H02J13/00
摘要： PURPOSE:To perform an individual process meeting a client's request by moving the process procedure that the client has to a server and performing the process on the server so as to couple the characteristic process procedure that the client has with the function of the server which has data and its data operation processing procedure. CONSTITUTION:An access data analyzing mechanism 201 has position information 202 on data decentralized and arranged in respective computer nodes and analyzes the position of decentralized data that a process procedure 200 being executed by an information process mechanism 11 of a computer node should refer to; if it is evident that data is present in another node 20 when the process procedure 200 tries to refer to the data, the execution of the process procedure is interrupted and the process procedure is transferred to the node 20 and restarted to perform the process cooperatively with a process procedure 2001 originally present in the node 20.

74. 发明专利

JPH0568170B2 失效
公开(公告)号：JPH0568170B2
公开(公告)日：1993-09-28
申请号：JP5049485
申请日：1985-03-15
申请人： HITACHI LTD
发明人： FUKUI CHIHIRO , KAWAKAMI JUNZO , IWATANI FUMIO
IPC分类号： H02J3/00 , H02J3/04

75. 发明专利

JPH0515071A METHOD FOR PLANNING START STOP OF GENERATOR 失效
公开(公告)号：JPH0515071A
公开(公告)日：1993-01-22
申请号：JP16262491
申请日：1991-07-03
申请人： HITACHI LTD
发明人： AMANO MASAHIKO , FUKUI CHIHIRO , KAWAKAMI JUNZO
IPC分类号： H02J3/46
摘要： PURPOSE:To obtain a solution which is close to an optimum one in a short time by calculating a value corresponding to whether each generator at each point is operated or not by using a neural network and then performing calculation so that an energy function becomes a minimum based on a sum of the calculation result. CONSTITUTION:A model-creation mechanism 12 creates a model of a neural net based on a content of a data-description portion 11. A demand at each power plant is described in the data-description portion 11. The model-creation mechanism 12 defines a neuron corresponding to an element of a schedule matrix and expresses constraint conditions and an evaluation function using an energy function, thus enabling a connection coefficient between the neurons to be determined according to a coefficient matrix. Then. a neural network operation mechanism 16 performs calculation based on the neural network model which is created by the model creation mechanism 12 and an initial value which is set by an initial-value setting mechanism 13 and allows the neural network to be operated.

76. 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.

77. 发明专利

JPH04195482A COMBINATION OPTIMIZATION DEVICE 失效
公开(公告)号：JPH04195482A
公开(公告)日：1992-07-15
申请号：JP32315690
申请日：1990-11-28
申请人： HITACHI LTD
发明人： NAKANISHI KUNIO , ABE SHIGEO , KAWAKAMI JUNZO , FUKUI CHIHIRO , AMANO MASAHIKO
IPC分类号： G06G7/00
摘要： PURPOSE:To obtain an end point which meets restriction conditions and where a target function is minimum or nearly minimum by varying an energy function by using an optional number of optional real numbers and varying the stability of the end point of a supercube. CONSTITUTION:When the energy function which is added to the target function by multiplying a restriction conditional expression by proper weight is represented as a polynomial of N optional variables, the energy function is varied while the values of the energy function at the end point of the N- dimensional supercube with N variables x1 to xN to vary the stability of the end point of the supercube. Then a differential equation is so adjusted to converge to various points when it is integrated. Consequently, when at least one point is found, N real numbers are determined by referring to at least one of those points at need to find a point which is small in the value of the energy function differently from the point which is already found by integrating the differential equation again.

78. 发明专利

JPH02202322A OPERATION SYSTEM FOR POWER SYSTEM 失效
公开(公告)号：JPH02202322A
公开(公告)日：1990-08-10
申请号：JP1816389
申请日：1989-01-27
申请人： HITACHI LTD
发明人： WATABE TEI , FUKUI CHIHIRO , KAWAKAMI JUNZO , AMANO MASAHIKO , KOMI YUTAKA
IPC分类号： H02J3/00
摘要： PURPOSE:To facilitate the indication of data and the understanding of the contents of data processing by providing a unit element level data layer and a summarized element level data layer to the data base and by providing a processing layer to an operation processing means corresponding to each data layer consisting of the above unit element level data layer and the above summarized element level data layer. CONSTITUTION:An equipment data layer 11 is a unit element level data layer describing the data that sorts the equipment constituting a power system as a unit element. To a relay data layer 13 defined data of a protection relay is described. A substation level data layer 12 is a summarized element level data layer, in which the unit element belonging to an equipment data layer 11 is abstracted by the macroelements on a substation level. On the other hand, an operation relay data layer 14 is a layer to manage the data concerning the protection relay. An accident information processing layer 15 has a function to manage the accident information inputted from outside.

79. 发明专利

JPS63310319A ABNORMAL STATE DIAGNOSING DEVICE 失效
公开(公告)号：JPS63310319A
公开(公告)日：1988-12-19
申请号：JP14315387
申请日：1987-06-10
申请人： HITACHI LTD
发明人： AMANO MASAHIKO , KAWAKAMI JUNZO , FUKUI CHIHIRO
IPC分类号： G01R31/00 , G06Q10/04 , G08B19/00 , H02H3/00 , H02J13/00
摘要： PURPOSE:To enable an intelligence base to be easily produced, by describing the intelligence divided into every intelligence of some elements secured easily, and by combining the intelligent elements organically with an inference mechanism, to permit the mechanism to have function to produce rules automatically. CONSTITUTION:When an accident happens on an abnormal state diagnosing device for a substation, in the substation, then some protection relays coping with the accident are worked. The numbers of the worked protection relays are taken in via an input section 11, and by a fault-discriminating inference mechanism 13, through the worked relay numbers and fault discriminating rules 14, the accident is inferred, and a fault discriminating result for the sort of an equipment where the fault happens and for the sort of the fault is led. Then, via an output section 12, the output of the fault discriminating result is directed to an external section. The fault discriminating rules 14 are automatically produced by an intelligence base describing the general intelligence 16 of the relays, an intelligence 17 on the connection of the relays, an intelligence 18 on the connection of equipments, and the like on every intelligent element, and by a rule-producing inference mechanism 15.

80. 发明专利

JPS63257060A ANALYSIS SUPPORTING SYSTEM 失效
公开(公告)号：JPS63257060A
公开(公告)日：1988-10-24
申请号：JP9076887
申请日：1987-04-15
申请人： HITACHI LTD
发明人： FUKUI CHIHIRO , KAWAKAMI JUNZO
IPC分类号： G06F15/00 , G06F9/06 , G06F17/50 , G06Q10/04
摘要： PURPOSE:To freely edit and add a supporting function, by setting a guidance function, a microcommand function, and an intelligent supporting function outside a CAE system. CONSTITUTION:A command analyzing part 11, when a command being inputted, analyzes the content of the command, and transmits a processing to be executed to a processing part 13, and also, transmits the content to a communication command analyzing part 12. The communication command analyzing part 12 transmits the content as communication 18. The communication command analyzing part 12, in the case of receiving a command execution request 24 from an external supporting system, analyzes it, and transmits the processing to be used actually to the processing part 13.

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