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1. 发明专利

JPH01206843A STABILIZER FOR POWER SYSTEM 失效
公开(公告)号：JPH01206843A
公开(公告)日：1989-08-21
申请号：JP2925088
申请日：1988-02-10
申请人： TOKYO ELECTRIC POWER CO , MITSUBISHI ELECTRIC CORP
发明人： SUZUKI MAMORU , YANAGIBASHI TAKESHI , OSHIDA HIDEJI , AIDA TADAHIRO
IPC分类号： H02J3/24
摘要： PURPOSE:To eliminate the need for predictive arithmetic operation by constituting the title stabilizer so that a stability criterion threshold can be determined on-line by a formula using only generator output data. CONSTITUTION:The electrical output data of generator groups 1A-1N are measured by firm sensors 51A-51N, and input to a system stabilization controller 5 through control-cables 52A-52N at the intervals of sampling of approximately 10msec. When electrical outputs from the generator groups 1A-1N are changed (reduced) only by a certain set value or more, the generation of the accidents of a short circuit and a ground fault is decided, the system stabilization controller 5 is brought to a start state, and stabilizing control can be executed.

2. 发明专利

JPH03169226A CONTROL METHOD FOR ON-LINE STABILIZATION OF POWER SOURCE SYSTEM 失效
公开(公告)号：JPH03169226A
公开(公告)日：1991-07-22
申请号：JP31039389
申请日：1989-11-28
申请人： MITSUBISHI ELECTRIC CORP , TOKYO ELECTRIC POWER CO
发明人： SUZUKI MAMORU , YANAGIBASHI TAKESHI , TOMIZAWA KAZUHIRO , OSHIDA HIDEJI , AIDA TADAHIRO
IPC分类号： H02J3/24
摘要： PURPOSE:To enable highly accurate stabilization control by calculating on-line the generator cutoff quantity required for the maintenance of the transient stability of a target power source system in the form of considering the effect of load, using the quantity being measurable with the terminal of an operating generator. CONSTITUTION:The first and second estimates P1* and P2* are estimated the on-line data of generator valid power output and invalid power output in an extremely short time immediately after clearing an accident. Furthermore, since the effect of the load is greatly reflected on the estimate P1* by expressing the power phase source curve as Pe=P1*+P2* sin delta, it becomes possible to calculate on-line the critical energy being a stable discrimination threshold, suitably for the system conditions or accident conditions, regardless of the magnitude of the load within a target power system, and highly accurate stabilization control can be done.

3. 发明专利

JPH0260429A SYSTEM STABILIZER 失效
公开(公告)号：JPH0260429A
公开(公告)日：1990-02-28
申请号：JP20906788
申请日：1988-08-23
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： OURA YOSHIFUMI , SUZUKI MAMORU , YANAGIBASHI TAKESHI , NAKAMURA TADASHI , YAMAURA MITSURU
IPC分类号： H02J3/24
摘要： PURPOSE:To prevent step out of system by predicting the step out due to unstable mode of the system and carrying out various system stabilization control based on the prediction. CONSTITUTION:Upon occurrence of disturbance in a transmission system 12, voltage detectors 14a, 14b sample bus voltages at typical power stations 13a, 13b in large power source systems 11a, 11b with predetermined intervals, then the sampled bus voltages are fed through transmission systems 15a, 15b to an operating section 16. The operating section 16 measures the difference 4 of times when the bus voltages at the power stations 13a, 13b cross zero point and operates a differential voltage phase angle between them. Thereafter, the operating section 16 predicts the differential voltage phase angle at a future point based on the differential voltage phase angle. Stability between the systems 11a, 11b is judged based on whether the predicted differential voltage phase angle exceeds over a preset threshold. When unstability of system is detected for a predetermined time, the operating section 16 provides a control command to a system stabilization controller thus preventing step out of the system.

4. 发明专利

JPS6277022A POWER SOURCE BREAKER 失效
公开(公告)号：JPS6277022A
公开(公告)日：1987-04-09
申请号：JP21556885
申请日：1985-09-28
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： OURA YOSHIFUMI , MATSUZAWA KUNIO , OTSUKA HITOSHI , YANAGIBASHI TAKESHI , KOMATA KAZUYA , SATO MASAHIRO
IPC分类号： H02J3/38 , H02J3/06

5. 发明专利

JP2001327079A SYNCHRONOUS PHASE MODIFIER CONTROLLER 失效
公开(公告)号：JP2001327079A
公开(公告)日：2001-11-22
申请号：JP2000144657
申请日：2000-05-17
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： YANAGIBASHI TAKESHI , TSUKIDA JIRO , TANAKA MINORU , KOMATA KAZUYA
IPC分类号： H02J3/18 , H02J3/24 , H02P9/14
摘要： PROBLEM TO BE SOLVED: To make a synchronous phase modifier contribute to system stabilization. SOLUTION: This synchronous phase modifier controller is provided with an external state quantity inputting means 11 for inputting external state quantity 2, indicating the state of a cluster of power generators formed out of one or a plurality of generators in a power system, a synchronous phase modifier effective power inputting means 12 for inputting the effective power of the synchronous phase modifier, a synchronous phase modifier state quantity inputting means 13 for inputting the state quantity 4 of the synchronous phase modifier indicating the state of the synchronous phase modifier, a control method determining means 14 for determining the control method based on the external state quantity and the synchronous phase modifier effective power, an operating amount determining means 15 for determining operating quantity based on the external state quantity, the synchronous phase modifier state quantity, and the control method, a phase compensating means 15 for generating phase compensation operating quantity by applying phase compensation to the operating quantity, and a limiter 17 generating an auxiliary signal given to an automatic voltage adjusting apparatus by restricting the phase compensation operating quantity, based on a preset upper limit value and lower limit value, thereby giving the auxiliary signal to an automatic voltage adjusting apparatus 261 of the synchronous phase modifier.

6. 发明专利

JPS6285640A ELECTRIC SOURCE DISCONNECTOR 失效
公开(公告)号：JPS6285640A
公开(公告)日：1987-04-20
申请号：JP22444485
申请日：1985-10-08
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： OURA YOSHIFUMI , MATSUZAWA KUNIO , OTSUKA HITOSHI , YANAGIBASHI TAKESHI , KOMATA KAZUYA , SATO MASAHIRO
IPC分类号： H02J3/38

7. 发明专利

JPH08154335A PHASE ANGLE DIFFERENCE, FREQUENCY DIFFERENCE AND FREQUENCY CALCULATION METHOD IN DIGITAL PROTECTION RELAY 失效
公开(公告)号：JPH08154335A
公开(公告)日：1996-06-11
申请号：JP29308094
申请日：1994-11-28
申请人： TOKYO ELECTRIC POWER CO , MEIDENSHA ELECTRIC MFG CO LTD
发明人： YANAGIBASHI TAKESHI , MAEDA TAKAFUMI , FUJIMOTO TOSHIRO , YAMAGUCHI HIROSHI
IPC分类号： H02H3/26 , H02H3/38 , H02H3/46
摘要： PURPOSE: To decide a phase angle difference with high precision and decide a frequency difference and a frequency accurately and continuously at arbitrary timings without depending upon sampling timings. CONSTITUTION: The product calculation of the values of sampling data 2 is performed in a process 1. The outputs of the calculation process 1 are inputted to n-step digital filters 2, 3,... to reduce the gain near a second harmonics and perform the suppression of errors.

8. 发明专利

JPH08111980A AC-TO-DC CONVERTER 失效
公开(公告)号：JPH08111980A
公开(公告)日：1996-04-30
申请号：JP24541294
申请日：1994-10-11
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： YANAGIBASHI TAKESHI , TSUKIDA JIROU , TAGUCHI YASUHIRO , TAKAGI KIKUO
IPC分类号： H02P9/00 , H02M7/155 , H02P9/04
摘要： PURPOSE: To suppress the low-frequency axis torsional vibration of an AC-to-DC converter by controlling the control angle which controls the DC power of a DC system in the phase of the voltage at an AC-DC connecting point. CONSTITUTION: The low-frequency axis torsional vibration suppressing circuit 1 of an AC-to-DC converter is constituted of a detector 4 which detects the voltage phase displacement at an AC-DC connecting point and a device which generates correcting signal for controlling phase. The detector 4 detects the displacement 6 of a voltage phase from the voltage amount 2 at the connecting point of an AC system with a DC system and the device 5 outputs an α- correcting signal 3 for controlling phase expressed in Δα, found from a prescribed transfer function based on the displacement 6. In an area where a phase lag is generated due to the time constant of the transfer function, phase compensation of the magnitude which is decided by a gain is performed. Therefore, the divergence of low-frequency axis torsional vibrations can be prevented.

9. 发明专利

JP2009033967A Power system protective device 有权
标题翻译：电力系统保护装置
公开(公告)号：JP2009033967A
公开(公告)日：2009-02-12
申请号：JP2008276933
申请日：2008-10-28
申请人： Tokyo Electric Power Co Inc:The , Toshiba Corp , 東京電力株式会社 , 株式会社東芝
发明人： YANAGIBASHI TAKESHI , SUZUKI MAMORU , MAEDA TAKAFUMI , ISHIBASHI SATORU , NISHITANI YASUNORI
IPC分类号： H02J3/14 , H02J3/00 , H02J3/18
CPC分类号： H02J3/18 , Y02E40/30 , Y10T307/461
摘要： PROBLEM TO BE SOLVED: To detect a decrease in voltage caused by reactive power characteristics with high sensitivity and no incorrect decision even if the system busbar is an electric power system connected by network electric feeder line while protective operation is actualized adequately.
SOLUTION: A master device, which acquires system electrical quantity of one or more high-order substations, detects a voltage drop resulting from the reactive power characteristics of the electric power system and transmits a detection signal of voltage decrease to a terminal device, which acquires the system electrical quantity of one or more low-order substations. Based on a load voltage and a load current of the load busbar, each terminal device disconnects sequentially a load in order of magnitude of voltage-drop influence resulting from the reactive power characteristics, and thereby the voltage drop caused by reactive power characteristics in power system can be prevented.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：即使系统母线是通过网络供电线路连接的电力系统，在保护操作充分实现的情况下，也可以高灵敏度地检测由无功功率特性引起的电压降低，并且不准确地决定。解决方案：获取一个或多个高次变电站的系统电量的主设备检测由电力系统的无功功率特性引起的电压降，并将电压降低的检测信号发送到终端设备，其获取一个或多个低阶变电站的系统电量。根据负载母线的负载电压和负载电流，每个终端设备按照无功功率特性导致的压降影响的大小顺序依次断开负载，从而导致电力系统无功功率特性引起的电压降可以防止。版权所有（C）2009，JPO＆INPIT

10. 发明专利

JPH10146099A AC-DC CONVERTER 失效
公开(公告)号：JPH10146099A
公开(公告)日：1998-05-29
申请号：JP31427896
申请日：1996-11-11
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： YANAGIBASHI TAKESHI , TAGUCHI YASUHIRO , TAKAGI KIKUO
IPC分类号： H02J3/24 , H02P9/00
摘要： PROBLEM TO BE SOLVED: To prevent generation and dispersion of low frequency shaft torsional vibration generated by an AC-DC converter. SOLUTION: In an AC-DC converter for converting AC to DC or converting DC to AC, there is provided a low frequency shaft torsional evaluation apparatus 1 which obtains an electric damping approximated value 15, by the calculation inputting a physical amount 3 of AC-DC converter and AC/DC interfacing point voltage amplitude value 2, and performs evaluation 12 for evaluating a degree of generation of low frequency shaft torsional vibration to the adjacent power generator from both damping approximated value and threshold value 13.

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