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21. 发明专利

JP2004088842A Generator controller 有权
公开(公告)号：JP2004088842A
公开(公告)日：2004-03-18
申请号：JP2002243612
申请日：2002-08-23
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： KOJIMA YASUHIRO , NAKAMURA SHIZUKA , MORI KAZUMI , IZUI YOSHIO
IPC分类号： H02J3/00 , H02J3/24 , H02J3/38 , H02J3/46
CPC分类号： H02J3/24 , G06Q50/06 , Y02E40/76 , Y04S10/545
摘要： PROBLEM TO BE SOLVED: To suppress fluctuation in grid frequency by precisely adjusting the output of a generator while optimizing a power generation cost based on an expected value of a total power demand.
SOLUTION: The power controller is provided with a grid monitor which monitors current state of the grid and outputs the amount of power demand, and a generator output optimizer which decides the output of a generator at every specified interval by resolving an evaluation function expression that requires minimum total of power generation cost by considering a demand-supply balance restriction that requires the amount of power demand to be equal to the total of power supply. The generator output optimizer further considers an AFC capacity restriction which is decided based on a speed variation upper limit value of the generator to resolve the evaluation function expression. The evaluation function expression may incorporate a fuel consumption restriction which requires the total output of the objective generator to be equal to a target power consumption amount.
COPYRIGHT: (C)2004,JPO

22. 发明专利

JP2003087969A POWER DEMAND ADJUSTING SYSTEM 审中-公开
公开(公告)号：JP2003087969A
公开(公告)日：2003-03-20
申请号：JP2001281466
申请日：2001-09-17
申请人： MITSUBISHI ELECTRIC CORP
发明人： HASHIMOTO HIROYUKI , IZUI YOSHIO , KITAYAMA TADASHI
IPC分类号： H02J3/00 , H02J3/14 , H02J13/00
摘要： PROBLEM TO BE SOLVED: To provide a power demand adjusting system which can control variation of incentive required for power demand adjustment or control variation of amount in the power demand adjustment due to the incentive. SOLUTION: A central apparatus S, a plurality of controlled apparatuses CS1 to CSn and computer systems 101, 201, 302, 401, 402 of customers 401, 402 are connected via a communication network 109. The computer system 101 of the center apparatus S is provided with a means 102 for forecasting a demand situation, a means 106 for obtaining amount of power demand adjustment to each controlled apparatus based on the forecasted situation and information including historical data of the power demand adjustment of a plurality of controlled apparatuses, and a means 108 for sending such data to a plurality of controlled apparatuses. As a result, variation of incentive required for power demand adjustment can be controlled.

23. 发明专利

JPH0956070A PREDICTION CONTROLLER, PHASE MODIFICATION CONTROLLER, AND VOLTAGE-REACTIVE POWER CONTROLLER 失效
公开(公告)号：JPH0956070A
公开(公告)日：1997-02-25
申请号：JP21184995
申请日：1995-08-21
申请人： MITSUBISHI ELECTRIC CORP , KANSAI ELECTRIC POWER CO
发明人： KOJIMA YASUHIRO , IZUI YOSHIO , KIYOUMOTO SUMIE , AIDA TADAHIRO , MINO YOSHIAKI , SATO TADASHI
IPC分类号： H02J3/00 , G05B21/02 , G05F1/70 , H02J3/12 , H02J3/18
摘要： PROBLEM TO BE SOLVED: To provide a prediction controller which can suppress ineffective operations without deteriorating the control accuracy by using the predicted output value of an object to be controlled several minutes later. SOLUTION: A prediction controller is provided with an integration controller 11 which integrates the target value of the output of an object to be controlled or deviating amounts of the output from a dead zone and outputs the control signal of the object when the integrated value of the deviating amount exceeds a threshold, an output predicting device 12 which predicts the output of the object (x) minutes after from the time sequential data of the past output of the object, and a parameter adjusting device 14 which dynamically changes the threshold of the integrated value of the deviating amounts of the integration controller 11 depending upon the deviating state of the predicted output from the dead zone.

24. 发明专利

JPH0833207A REACTIVE POWER PLANNING METHOD FOR POWER SYSTEM 失效
公开(公告)号：JPH0833207A
公开(公告)日：1996-02-02
申请号：JP16226494
申请日：1994-07-14
申请人： KANSAI ELECTRIC POWER CO , MITSUBISHI ELECTRIC CORP
发明人： YOSHIMI MASASHI , KESANAKURUTEI SHIYANTEI SUWARO , IZUI YOSHIO
IPC分类号： G06F15/18 , G05B13/02 , G06F17/00 , G06F19/00 , G06N3/00 , G06N99/00 , G06Q50/00 , G06Q50/06 , H02J3/18
摘要： PURPOSE:To realize reactive power control closer to an optimal solution by generating a chromosome in a genetic algorithm employing genes as control variables, performing a genetic operation for the chromosome and evaluating the genetic operation using a total objective expression. CONSTITUTION:(k) normalized values Pnl1-Pnlk corresponding to solids P1, (p) normalized values Pnn1-Pnnp corresponding to solids Pn, and the like, are encoded and coupled randomly with corresponding rows thus generating individuals having chromosomes 1-i. The chromosomes are then subjected to genetic operations including selection, crossing, and mutation and power flow is analyzed using control variables determined through the genetic operation. In other words, calculation is made for an objective expression related to the total effective power loss and total voltage variation. The genetic operation and evaluation are repeated until a significant variation disappears from the objective expression and all chromosomes are settled.

25. 发明专利

JPH044795A CONTROLLER FOR NERVE NETWORK GENERATOR 失效
公开(公告)号：JPH044795A
公开(公告)日：1992-01-09
申请号：JP10203790
申请日：1990-04-17
申请人： MITSUBISHI ELECTRIC CORP
发明人： IZUI YOSHIO
IPC分类号： G06G7/60 , G06F15/18 , G06N3/00 , G06N99/00 , H02P9/00
摘要： PURPOSE:To stably control rotations of a turbine, a generator by composing of a learning step and a simulating step. CONSTITUTION:In a learning step, past set voltage Vtref of a generator terminal, rotating speed omega of the generator, output power Pe of the generator, terminal voltage Vt of the generator and field current if of the generator are input to a nerve element of a nerve network. In this case, a coupling weight is so calculated an exciting voltage Efd to be output and a desired output corresponding to an input as a governor control signal (g). Then, in a simulating step, set voltage Vtref of actual generator terminal to a nerve element of the learned network, rotating speed omega of the generator, output power Pe of the generator, terminal voltage Vt of the generator, and field current if of the generator are input. When the network is executed, the voltage Efd corresponding to the input data and the signal (g) are output, and the voltages of a governor 11 and an exciter 17 are controlled by the output values.

26. 发明专利

JPH03232078A NEURON NETWORK DEVICE 失效
公开(公告)号：JPH03232078A
公开(公告)日：1991-10-16
申请号：JP2916090
申请日：1990-02-07
申请人： MITSUBISHI ELECTRIC CORP
发明人： IZUI YOSHIO
IPC分类号： G06G7/60 , G06F15/18 , G06N3/04 , G06N99/00
摘要： PURPOSE:To facilitate integration and to simulate the neural system of a living body by coupling arithmetic units into meshes and allowing respective arithmetic units to simulate the neural system of the living body while communicating with one another in two directions. CONSTITUTION:A communication line 13 capable of communication in two directions connects upper, lower, left, and right, arithmetic units 12 to constitute meshes of an operation network. All arithmetic units 12 synchronously execute the same instruction through a control command line 15 by the control instruction from a host computer 14. Internal states and output values of neural elements obtained by simulating neural cells of the living body by respective arithmetic units 12 and coupling weights which simulate synapses between neural elements are stored in a memory, and mutual communication of arithmetic units 12 is controlled by a controller to simulate the neural system of the living body. Thus, the device is easily arranged on a plane and is easily integrated, and the neural system of the living body is simulated at a high body.

27. 发明专利

JPH10254503A COMMAND VALUE DETERMINING DEVICE 失效
公开(公告)号：JPH10254503A
公开(公告)日：1998-09-25
申请号：JP5213897
申请日：1997-03-06
申请人： MITSUBISHI ELECTRIC CORP
发明人： TANIMOTO MASAHIKO , IZUI YOSHIO
IPC分类号： G05B13/04
摘要： PROBLEM TO BE SOLVED: To precisely determine output command values of respective plants which minimize the fuel consumptions of the respective plants by extracting items affecting the current fuel consumptions from fuel consumption characteristic model of the respective plants that are determined in consideration of history characteristics and generating output decision models of the respective plants. SOLUTION: A fuel consumption characteristic model generation part 5 gathers data on fuel consumption Qm for outputs Pm of the plants by the plants Gm which are mutually connected and generates fuel consumption characteristic models Fm ,t in consideration of history characteristics. A storage part 6 stores the generated fuel consumption characteristic models Fm ,t and output decision models Hm ,t generated by an output decision model generation part 7. The output decision model generation part 7 extracts items affecting the fuel consumptions Qm ,t0 at current time t0 from fuel consumption characteristic models Fm ,t regarding the respective plants Gm and generate output decision models Hm ,t0 of the respective plants Gm .

28. 发明专利

JPH0830581A METHOD FOR PREDICTING QUANTITY OF DEMAND 失效
公开(公告)号：JPH0830581A
公开(公告)日：1996-02-02
申请号：JP16846494
申请日：1994-07-20
申请人： MITSUBISHI ELECTRIC CORP
发明人： NAKABAYASHI MIYUKI , KOJIMA YASUHIRO , IZUI YOSHIO , TSUKIYAMA MAKOTO
IPC分类号： G06F15/18 , G05B13/02 , G06F17/00 , G06N3/00 , G06Q10/04 , G06Q50/00 , G06Q50/06
摘要： PURPOSE:To predict the quantity of daily demand with high predicting accuracy by inputting weather, maximum temperature and shinning hours on a current day, a record of the quantity of daily demand on a recent day with similar weather, etc., outputting the quantity of daily demand on the current day and predicting the quantity of daily demand. CONSTITUTION:At the time of learning, weather, maximum temperature and shinning hours on a current day and maximum temperature and shinning hours on a day the most recent to the current day and having similar weather which are obtained from a weather record data file 7 normalized by a normalizing device 10 and a daily water distribution record on the recent day having similar weather obtained from a water distribution record data file 6 are inputted as I/O data to a neural circuit network 11 and the quantity of daily water distribution on the day is outputted. The record values of the I/O data are set up as learning data for a certain fixed period and the network 11 is learned so that the output of the network 11 coincides with a recorded value of the quantity of daily water distribution from the file 6 normalized by the device 10. Thus the quantity of daily demand on a predicted day is predicated by non-linear approximation.

29. 发明专利

JPH0635888A LEARNING METHOD FOR NEURAL NETWORK AND ELECTRIC SYSTEM VOLTAGE/REACTIVE POWER CONTROLLER USING THE LEARNING METHOD 失效
公开(公告)号：JPH0635888A
公开(公告)日：1994-02-10
申请号：JP20953592
申请日：1992-07-15
申请人： MITSUBISHI ELECTRIC CORP
发明人： KOJIMA YASUHIRO , IZUI YOSHIO , AIDA TADAHIRO , KIYOUMOTO SUMIE
IPC分类号： G06F15/18 , G06G7/60 , G06N3/08 , G06N99/00 , H02J3/16 , H02J3/18
摘要： PURPOSE:To promptly complete learning even when a target value is rapidly changed by obtaining the error of the target value and the output value of a neural network and changing the weight of connection between respective neurons in the neural network. CONSTITUTION:By obtaining the error of the target value and the output value of the neural network (ST2), the sum of the square value of the error and the square value of the varied portion of the error is obtained and when the sum is larger than a prescribed value, the sum is varied in a direction to be made smaller by changing the weight of the connection between the respective neurons in the neural network. Since the variation portion of the error is considered in such a manner, whether the variation portions of the error is in the direction to be made smaller or in the direction to be made larger can be recognized as information by changing the weight of the connection between the neurons at the time of changing the weight of the connection between the neurons (ST5, 6) and thus, appropriate correction amount can be obtained and the period of time required for completing the learning can be shortened compared with a conventional method as a result.

30. 发明专利

JPH04372044A CONTROL METHOD AND ELECTRIC POWER SYSTEM VOLTAGE REACTIVE POWER CONTROLLER USING THE SAME 失效
公开(公告)号：JPH04372044A
公开(公告)日：1992-12-25
申请号：JP17473591
申请日：1991-06-20
申请人： MITSUBISHI ELECTRIC CORP
发明人： KOJIMA YASUHIRO , IZUI YOSHIO , AIDA TADAHIRO , KIYOUMOTO SUMIE
IPC分类号： G06F15/18 , G05B13/02 , G06N3/00 , G06N99/00 , H02J3/18
摘要： PURPOSE:To deal with an arbitrary control object by controlling the actual control object using the neuron circuit network controller after the control characteristic of the existing controller is learned by the neuron circuit network according to a learning algorithm. CONSTITUTION:The existing controller 1 and its control object 2 are constituted as a neuron circuit network controller 3 and a neuron circuit network control objective simulator 4. The learning of each neuron circuit network control is performed so that the input/output relationship between the neuron circuit network controller 3 and the controller 1 and the input/output relationship between the neuron circuit network objective simulator 4 and the control object 2 could be coincident. Then, the output of the neuron circuit network controller 3 and the input of the neuron circuit network control object simulator 4 are combined. The relearning of the neuron circuit network of the neuron circuit network controller 3 is performed so that the output of both the devices 3 and 4 are coincident. After that, the control object 2 is controlled by the neuron circuit network controller 3.

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