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1. 发明专利

JPS6198200A Excitation control system 失效
标题翻译：激励控制系统
公开(公告)号：JPS6198200A
公开(公告)日：1986-05-16
申请号：JP21988484
申请日：1984-10-19
申请人： Hitachi Ltd , Kansai Electric Power Co Inc:The
发明人： KATO TADAATSU , NAKAGAWA HIROTO , NOHARA GOO , GOTO MASUO , SAWA SHUSUKE
IPC分类号： H02P9/00 , H02P9/14
CPC分类号： H02P9/14
摘要： PURPOSE:To suppress the variation in the terminal voltage of a variable speed regulator at system defect time by providing means for calculating the time of applying the strengthened amount of an excitation on the basis of a defect phase, a slip and a machine constant when a defect occurs at a system side. CONSTITUTION:A defect state discriminator 24 judges the phase and the degree of a defect from the voltage and the current of a generator. An exciting phase controller 25 calculates the phase to be strengthened in the excitation from the machine constant, operating state and the defect state on the basis of the signal from the discriminator 24. A calculator 27 takes the difference between a terminal voltage Et and a reference voltage EtO, and a converter 28 converts the output to a slip frequency. A switch 29 is closed when the output of the converter 28 is applied to the excitor. The closing time of the switch 29 is controlled by the output of the controller 25. A calculator 30 adds the exciting amount before strengthening the excitation from the converter 26 and the strengthened amount of the excitation from the switch 29, and supplies it to an excitation amount setter 17.
摘要翻译：目的：通过提供用于计算基于缺陷相位施加激励强度的时间的装置来抑制变速调速器在系统缺陷时的端电压的变化，当a 缺陷发生在系统侧。构成：缺陷状态鉴别器24根据发电机的电压和电流判断缺陷的相位和程度。励磁相位控制器25基于来自鉴别器24的信号，从机器常数，运行状态和缺陷状态计算激励中的相位。计算器27取终端电压Et和基准电压EtO，转换器28将输出转换成转差频率。当转换器28的输出施加到激励器时，开关29闭合。开关29的闭合时间由控制器25的输出控制。计算器30将加强来自转换器26的激励的激励量与来自开关29的激励强度相加，并将其提供给激励金额设定者17。

2. 发明专利

JPS6285699A VARIABLE-SPEED GENERATOR 失效
公开(公告)号：JPS6285699A
公开(公告)日：1987-04-20
申请号：JP22281285
申请日：1985-10-08
申请人： KANSAI ELECTRIC POWER CO , HITACHI LTD
发明人： SUGIMOTO OSAMU , KATO TADAATSU , NOHARA GOO , GOTO MASUO
IPC分类号： H02P27/02 , H02H7/06 , H02J3/24 , H02P9/00 , H02P9/04 , H02P23/07 , H02P27/05
摘要： PURPOSE:To improve stability by using a difference between power required for a control spot and an output capable of being made to correspond by other periodic machines as a power command value for a variable speed machine. CONSTITUTION:A command-value computing section 15 outputs an opening command value V for a governor valve 12 for a hydraulic turbine 13 and a speed command value N) on the basis of static head H ad an output command value P0. A phase-angle computing section 16 computes the phase angle DELTAdeltaof a secondary winding for an induction generator 100 on the basis of the output command value P0, effective power P, the speed command value N0 and a speed signal N. An excitation-quantity setting section 17 sets the quantity of the secondary winding excited by the speed signal N, the phase angle DELTAdelta and an output from a voltage regulating section 18. A proportional arithmetic section 60 compensates the output command value P0 on the generation of a grounding accident, outputs a compensated commend value P01, and absorbs the unbalanced energy of a system.

3. 发明专利

JPS62236394A OPERATION CONTROL SYSTEM FOR VARIABLE SPEED PUMPINGUP GENERATOR PLANT 失效
公开(公告)号：JPS62236394A
公开(公告)日：1987-10-16
申请号：JP7812986
申请日：1986-04-07
申请人： KANSAI ELECTRIC POWER CO , HITACHI LTD
发明人： SUGIMOTO OSAMU , KATO TADAATSU , NOHARA GOO , GOTO MASUO
IPC分类号： H02J3/00 , H02J3/46 , H02P9/00 , H02P9/04 , H02P9/14 , H02P23/00 , H02P23/07 , H02P23/26 , H02P27/05
摘要： PURPOSE:To stably control a variable speed pumping-up generator plant to a target value at AFC operation time by controlling a valve opening on the basis of an output command value and a head. CONSTITUTION:&?A block 25 obtains an optimum valve opening according to a function determined in advance by a head H and an output command value P0, and its output is applied to a servo system 14 to become the opening of a valve 12 of a governor. A secondary winding phase angle calculator 15 calculates a phase angle by an effective power and the output command value P0 having a time delay, and applies it to a setter 17 for setting the exciting amount of a secondary circuit. Thus, power determined by the system can be efficiently operated at pumping-up time.

4. 发明专利

JPS62181698A CONTROLLING DEVICE FOR VARIABLE-SPEED GENERATING SYSTEM 失效
公开(公告)号：JPS62181698A
公开(公告)日：1987-08-10
申请号：JP2316286
申请日：1986-02-05
申请人： KANSAI ELECTRIC POWER CO , HITACHI LTD
发明人： SUGIMOTO OSAMU , KATO TADAATSU , SAWA SHUSUKE , ITO AKIO , SUGISAKA HIROSHI
IPC分类号： H02J3/24 , H02P9/00 , H02P9/14
摘要： PURPOSE:To ensure stable control and the stabilization of system frequency by vector-synthesizing an effective-current component value and a reactive-power component value and acquiring a secondary exciting current command and controlling power by the command. CONSTITUTION:An effective current component is obtained from a deviation between an effective power value on the primary side of a main transformer 4 and an effective-power command value by an effective component computing element 7, and a reactive current component is acquired from a deviation between a reactive power value on the primary side of the main transformer 1 and reactive-power command value by a reactive component computing element 8. Current controllers 12-1-12-3 synthesize the effective current component and the reactive current component obtained, and output an exciting current command transmitted over a secondary winding for a wound-rotor type induction generator 1 to cycloconverters 3-1-3-3.

5. 发明专利

JPS6281998A EXCITATION CONTROL SYSTEM 失效
公开(公告)号：JPS6281998A
公开(公告)日：1987-04-15
申请号：JP21948985
申请日：1985-10-02
申请人： KANSAI ELECTRIC POWER CO , HITACHI LTD
发明人： KATO TADAATSU , NAKAGAWA HIROTO , NOHARA GOO , GOTO MASUO
IPC分类号： H02P27/02 , H02P9/00 , H02P9/04 , H02P23/07 , H02P23/16 , H02P23/24 , H02P27/05
摘要： PURPOSE:To reduce the capacity of a cycloconverter by forming an unbalanced state in a difference between a set point and an actual value when slip is kept within a predetermined range. CONSTITUTION:A command-value computing circuit 15 computes the opening command value HV of a governor valve for a hydraulic turbine and a speed command value NO on the basis of a static head H and an output command PO. A phase-angel computing section 16 adds a difference between the speed command value NO and an output signal P, and outputs an added value as it is when slip frequency is kept outside a predetermined range and outputs a value acquired by multiplying the added value by a fixed value when slip frequency is kept within the prescribed range. A secondary-winding excitation- quantity computing section 17 sets the quantity of a secondary winding excited of an induction motor on the basis of an output from the phase-angle computing section 16, the speed signal N and an output from a voltage regulating section 18.

6. 发明专利

JPS62236398A CONTROLLER FOR INDUCTION MACHINE 失效
公开(公告)号：JPS62236398A
公开(公告)日：1987-10-16
申请号：JP7812586
申请日：1986-04-07
申请人： KANSAI ELECTRIC POWER CO , HITACHI LTD
发明人： NAKAGAWA HIROTO , ONO YASUTERU , KATO TADAATSU , NAGURA OSAMU , NIWA SADAHIKO , FURUKAWA YOSHIO , KAYUKAWA SHIGEHIRO
IPC分类号： H02J3/38 , H02P9/00 , H02P9/10 , H02P9/14 , H02P9/42 , H02P23/00 , H02P23/07 , H02P23/24 , H02P27/05
摘要： PURPOSE:To continue the operation of an induction machine without synchronizing with the disorder of a system by using as a reference power source for determining the frequency of a wound-rotor type induction machine a power source different from that in the system. CONSTITUTION:A phase detector 2 having a winding equal to the magnetic positional relationship to a secondary widing is coupled directly with the primary winding of a generator motor 1, the primary winding of the detector 2 is excited by a power source 7, and an inverter converter 4 is controlled on the basis of the voltage of a slip frequency generated in the secondary winding. The source 7 has a directly coupled starting DC machine 31 and two synchronous machines 32, 33 having equal numbers of poles and equal magnetic positional relationship of stator windings and poles. Thus, even if a frequency abruptly varies in a system 5, it does not rapidly change due to the flywheel effect of the rotors of the machine 31 and the machines 32, 33 to tend to maintain the rated frequency of the system 5.

7. 发明专利

JPS62236396A OPERATION CONTROL SYSTEM FOR VARIABLE SPEED PUMPINGUP GENERATOR PLANT 失效
公开(公告)号：JPS62236396A
公开(公告)日：1987-10-16
申请号：JP7813186
申请日：1986-04-07
申请人： KANSAI ELECTRIC POWER CO , HITACHI LTD
发明人： KATO TADAATSU , NAKAGAWA HIROTO , NOHARA GOO , GOTO MASUO
IPC分类号： H02J3/00 , H02P9/00 , H02P9/04 , H02P9/14
摘要： PURPOSE:To reduce a variation in an effective power of a variable speed pumping-up generator plant when a reactive power control command is applied by simultaneously controlling the phase angle of an exciting voltage by the reactive power control command. CONSTITUTION:When a static head H and an output command P0 are applied, a command value calculator 15 calculates the opening command value and a speed command value of a governor valve 12 by with due regard to an efficiency. A composite unit 27 obtains the difference between the calculated reactive power of a variable speed machine 1 and the reactive power command value Q0, and a converter 24 converts it into a voltage. The value obtained by subtracting the value from a voltage set value V0 is combined by a composite unit 25 with the voltage of the machine 1. A secondary winding phase angle calculator 16 calculates a phase angle from the effective power and the output command P0. A setter 17 sets a secondary winding exciting amount by the output of the calculator 16 and the output of a voltage regulator 18.

8. 发明专利

JPS62236391A EXCITATION CONTROL SYSTEM 失效
公开(公告)号：JPS62236391A
公开(公告)日：1987-10-16
申请号：JP7812486
申请日：1986-04-07
申请人： KANSAI ELECTRIC POWER CO , HITACHI LTD
发明人： KATO TADAATSU , NAKAGAWA HIROTO , NOHARA GOO , GOTO MASUO
IPC分类号： H02J3/00 , H02J3/24 , H02P9/00 , H02P9/04 , H02P9/14 , H02P21/22 , H02P21/36 , H02P23/00 , H02P23/07 , H02P23/16 , H02P23/26 , H02P27/05
摘要： PURPOSE:To pass the vicinity of zero slip in a short time by intentionally producing an unbalance between the input and the output of a system when the slip arrives at a predetermined range. CONSTITUTION:When a static head H and an output command P0 are applied, a command value calculator 15 calculates the opening command value Hv and a speed command value N0 of a governor valve with due regard to an efficiency. A phase angle calculator 116 adds outputs from a phase angle control amount calculator 25 which inputs the difference between the target rotating speed N0 and the actual rotating speed N from a tachometer generator 11 and a phase angle control amount calculator 27 which inputs the difference between an output from an effective power leading unit 21 and the output command value P0 to calculate the phase angle DELTAdelta of a secondary winding, and applies it to a setter 17. A calculator 16 alters the coefficient of a propor tional term when a slip frequency falls within a predetermined range.

9. 发明专利

JPS6282000A EXCITATION CONTROL SYSTEM 失效
公开(公告)号：JPS6282000A
公开(公告)日：1987-04-15
申请号：JP21988185
申请日：1985-10-02
申请人： KANSAI ELECTRIC POWER CO , HITACHI LTD
发明人： KATO TADAATSU , NAKAGAWA HIROTO , NOHARA GOO , GOTO MASUO
IPC分类号： H02P27/02 , H02P9/00 , H02P9/14 , H02P23/07 , H02P23/16 , H02P23/24 , H02P27/05
摘要： PURPOSE:To prevent the variation of the terminal voltage of a variable-speed machine on a system accident and on slip-zero operation by controlling the exciting voltage of secondary excitation as the function of slip frequency and the terminal voltage of the variable-speed machine. CONSTITUTION:A command-value computing circuit 15 outputs the opening command value theta of a governor valve for a hydraulic turbine 12 and a speed command N0 on the basis of a static head H, a reactive power command Q and an effective power command P0. A secondary-winding phase-angle computing section 16 computes a phase angle DELTAdelta on the basis of the speed command N0, a speed signal N, the effective power command P0 and effective power P. A voltage regulating section 18 adds signals acquired by multiplying each of a difference between reference voltage Et0 and terminal voltage Et and reference voltage Et0 by slip frequency fs and outputs them. A secondary excitation- quantity setting section 17 sets the quantity of the secondary circuit excited of an induction generator on the basis of an output signal from the voltage regulating section 18, the speed signal N and the phase angle DELTAdelta.

10. 发明专利

JPH0576279B2 失效
公开(公告)号：JPH0576279B2
公开(公告)日：1993-10-22
申请号：JP7813186
申请日：1986-04-07
申请人： KANSAI ELECTRIC POWER CO , HITACHI LTD
发明人： KATO TADAATSU , NAKAGAWA HIROTO , NOHARA GOO , GOTO MASUO
IPC分类号： H02J3/00 , H02P9/00 , H02P9/04 , H02P9/14

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