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1. 发明专利

JPH10257674A MODELING METHOD, PREDICTION METHOD, AND SYSTEM STABILIZATION CONTROL METHOD 失效
公开(公告)号：JPH10257674A
公开(公告)日：1998-09-25
申请号：JP5352697
申请日：1997-03-07
申请人： MITSUBISHI ELECTRIC CORP , TOKYO ELECTRIC POWER CO
发明人： KOJIMA YASUHIRO , KOWADA YASUYUKI , OSHIDA HIDEJI , IMAI SHINICHI , SHIYOUJI HISAYA
IPC分类号： H02J3/00 , G06F17/00 , G06F19/00 , G06Q50/00 , G06Q50/06 , H02J3/24
摘要： PROBLEM TO BE SOLVED: To improve operation accuracy, when calculating a virtual target edge phase angle using only own terminal information and calculating a generator constant by calculating a phase angle between the own terminal and the virtual target terminal, based on own terminal information that is measured while a system is oscillating. SOLUTION: A voltage value V1 and a current value at the measurement point of a power station of installing a system stabilization device are measured, and the absolute value of a current I for a voltage at a measurement point and a phase angle α are obtained using the data. When a line reactance XL has already been calculated, a phase angle β of a virtual target terminal for a current is obtained by the voltage value V1 of the measurement point, the line reactance XL, the current value I, and the current phase angle α. Otherwise a phase angle β of the virtual target terminal for a current is obtained by the current value V1 of the measurement point, a voltage value E2 of the virtual target terminal, and the phase angle α of the current. Then, a phase angle δof the virtual target terminal is obtained using the current phase angle αand the phase angle β (S1-S10).

2. 发明专利

JP2001257404A LASER DEVICE 失效
公开(公告)号：JP2001257404A
公开(公告)日：2001-09-21
申请号：JP2000066628
申请日：2000-03-10
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： IMAI SHINICHI , SATO HAJIME , TAKIZAWA YASUSHI , FUTAKI SHOICHIRO
IPC分类号： G02F1/09 , G02B27/28 , G02F1/37 , H01S3/08 , H01S3/106
摘要： PROBLEM TO BE SOLVED: To provide a laser device wherein output of light is enabled with high efficiency by making the return light generated by turbulence of polarizing direction usable and adaptability can be enlarged. SOLUTION: This laser device is provided with a polarizing member 22 which reflects only first polarized component, a second polarizing member 24 which is arranged in a reflecting direction of the polarizing member 22 and reflects second polarized component, a Faraday rotator member 23 which is arranged on an optical axis between the polarizing members 22, 24, a high reflecting mirror 28 which is arranged in a reflecting direction from the polarizing member 24, laser rods 25, 26 which are arranged on an optical axis between the polarizing member 24 and the high reflecting mirror 28, and a tunable Faraday rotator member 27 which rotates polarizing direction of an inputted laser light L to a constant direction to an optical axis and outputs it. Output lights L1, L2 are outputted via the polarizing member 22 and the polarizing member 24.

3. 发明专利

JPH10271686A STABILIZER OF POWER SYSTEM 失效
公开(公告)号：JPH10271686A
公开(公告)日：1998-10-09
申请号：JP9012397
申请日：1997-03-25
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： SHIYOUJI HISAYA , IMAI SHINICHI , SATO MASAHIRO , ISHIHARA YUJI
IPC分类号： G01R31/34 , H02J3/24 , H02J3/38
摘要： PROBLEM TO BE SOLVED: To improve the predictive accuracy of fluctuations of a generator in the future so as to raise the reliability, by performing the judgment of the step out, using the predictive result of a fluctuation prediction part, and executing the stabilization control for preventing step-out phenomenon in the case that it has judged that the generator will step out in the future. SOLUTION: At the point measurement provided on a power system 1, a generator fluctuation prediction part 4 predicts the quantity of conditions of the phase angle of the inside voltage of an equivalent generator model, and others, using the voltage, current, and power measured with the system condition measuring part 2 and the system impedance and others estimated with a system impedance estimator 3. Then, a fluctuation prediction part 6 predicts the future fluctuation by evaluating the differential equation of an equivalent generator model obtained at a generator parameter computing part 5. Then, in case that a step out judger 7 judges that the generator will step out in the future, a stabilization controller 8 executes the stabilization control for preventing the step out phenomenon. Hereby, highly reliable fluctuation prediction and stabilization control of step out judgment can be performed.

4. 发明专利

JP2003202608A METHOD FOR MANUFACTURING WAVELENGTH CONVERSION ELEMENT 审中-公开
公开(公告)号：JP2003202608A
公开(公告)日：2003-07-18
申请号：JP2002002481
申请日：2002-01-09
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： IMAI SHINICHI , KONO YUKO , YOSHII RYOSUKE , WATABE TAKASHI , FUTAKI SHOICHIRO , ARAKI YOSHIO
IPC分类号： G02F1/37
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a wavelength conversion element maintaining high output characteristics for a long time with respect to a fast multiple laser. SOLUTION: The method is characterized by previously subjecting the wavelength conversion element composed of a KTP (potassium titanyl phosphate) crystal to deterioration of output over time with the aid of wavelength conversion operation and subsequently annealing the resultant matter. COPYRIGHT: (C)2003,JPO

5. 发明专利

JP2001257409A SOLID STATE LASER AMPLIFIER 失效
公开(公告)号：JP2001257409A
公开(公告)日：2001-09-21
申请号：JP2000066627
申请日：2000-03-10
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： IMAI SHINICHI , NAKAYAMA MICHIO , TAKIZAWA YASUSHI , FUTAKI SHOICHIRO
IPC分类号： H01S3/23 , H01S3/10
摘要： PROBLEM TO BE SOLVED: To provide a solid state laser amplifier which performs amplifying operation with high efficiency. SOLUTION: This solid state laser amplifier is provided with a double path optical path which is provided with an amplifying part 14 having laser rods 21-24, a light source 11 for introducing a laser beam to the amplifying part 14, polarizers 12, 13, a high reflection mirror 16 arranged to the polarizer 13 interposing the amplifying part 14, and a Faraday rotor 15 arranged between the amplifying part 14 and the high reflection mirror 16. The Faraday rotor 15 outputs a laser light L in such a manner that a polarizing direction of the laser beam L inputted from a high reflection mirror 16 side and outputted to an amplifying part 14 side is rotated 90 deg. to the polarizing direction of the laser beam L inputted from the amplifying part 14 side. In the first laser rod 21, the rear forcal length is D1. In the second laser rod 22, the rear forcal length is D2. Distance between the first laser rod 21 and the second laser rod 22 is set as D1+D2.

6. 发明专利

JP2001257398A SOLID-STATE LASER OSCILLATOR 失效
公开(公告)号：JP2001257398A
公开(公告)日：2001-09-21
申请号：JP2000066626
申请日：2000-03-10
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： IMAI SHINICHI , TAKIZAWA YASUSHI , FUTAKI SHOICHIRO
IPC分类号： H01S3/08
摘要： PROBLEM TO BE SOLVED: To provide a solid-state laser oscillator, capable of compensating for birefringence and suppressing the output loss to a minimum. SOLUTION: This solid-state laser oscillator is provided with an excitation module 16, located on an optical axis C between an output mirror 12 and a reflecting mirror 13, polarizer 14 located between the excitation module 16 and the output mirror 12, Faraday rotator 15, for rotating the polarizing direction of inputted laser light at 45 deg. in a fixed direction with respect to the optical axis C and outputting the laser light, and optical element for outputting the laser light, so that the polarizing direction of laser light, inputted from the side of the reflecting mirror 13 to be outputted to the side of the exciting module 16, can be rotated by 90 deg. in the polarizing direction of laser light inputted from the side of the excitation module 16.

7. 发明专利

JPH11289669A POWER SYSTEM STABILIZING APPARATUS 失效
公开(公告)号：JPH11289669A
公开(公告)日：1999-10-19
申请号：JP10193498
申请日：1998-03-31
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： IMAI SHINICHI , SHOJI HISAYA , KOMATA KAZUYA , ISHIHARA YUJI , MIURA SHOGO , KANEKO TAKESHI
IPC分类号： G01R31/34 , H02H7/26 , H02J3/24 , H02J3/38
摘要： PROBLEM TO BE SOLVED: To provide a power system stabilizing apparatus for which no external reactance is required to be set and which can eliminate operational hindrances. SOLUTION: An arithmetic section 3 decides a fixed value as the assumed magnitude value VSA of the internal voltage VS of the equivalent generator S of a main system. Then the arithmetic section 3 calculates the internal voltage VSA of the generator S in a steady state by executing prescribed operation based on the fixed value and various kinds of measured values obtained by means of a detecting section 2 in a steady state. In addition, the arithmetic section 3 calculates the phase angle δs of the equivalent motor S of the main system, after a failure occurs by executing prescribed operation based on the fixed value and various kinds of measured values after the failure is removed.

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