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1. 发明专利

JP2007037354A Independent operation preventing device 有权
标题翻译：独立操作防止设备
公开(公告)号：JP2007037354A
公开(公告)日：2007-02-08
申请号：JP2005220080
申请日：2005-07-29
申请人： Mitsubishi Electric Corp , Tokyo Electric Power Co Inc:The , 三菱電機株式会社 , 東京電力株式会社
发明人： OSHIDA HIDEJI , KOWADA YASUYUKI , WATANABE MINEO , TAKANO TOMIHIRO , MOTOHASHI JUN , TAGUCHI SEI , HIRAI TAKAO , OISHI KOHEI
IPC分类号： H02J3/38
CPC分类号： Y02E40/72 , Y04S10/123
摘要： PROBLEM TO BE SOLVED: To provide an independent operation preventing device which can surely prevent independent operation relative to all the distributed power sources linked with a system without being influenced by the balance state between the power generation amount in the system upon the occurrence of independent operation and a load amount, the magnitude of various electric amount variation nor the number of linked distributed power sources, and can satisfy a predetermined control finish target time. SOLUTION: After an initializing condition in a substation 1 is established, a central unit 14 set in the substation 1 sends a transfer intercepting signal relative to the terminal device 5 of the distributed power source 3 having the connection to a high voltage distribution line 2 recognized in advance to execute transfer interception, and then the central unit sends a forced short-circuit signal relative to an interceptor 15 for forced short-circuit set in the substation 1 to temporarily destroy the line-to-line voltage of the high voltage distribution line 2, with all the distributed power sources 7 linked with a low voltage distribution line being stopped. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种独立的防止操作的装置，其能够相对于与系统连接的所有分布式动力源可靠地防止独立操作，而不受系统发生量在发生时的发电量之间的平衡状态的影响独立运行和负载量，各种电量变化的幅度以及连接的分布式电源的数量，并且可以满足预定的控制完成目标时间。解决方案：在变电站1的初始化状态建立之后，设在变电站1中的中央单元14相对于具有与高电压分配连接的分布式电源3的终端设备5发送传输拦截信号线路2预先识别出执行传输拦截，然后中央单元相对于拦截器15发送强制短路信号，用于在变电站1中强制短路设置，以暂时消除高电平的线间电压电压分配线2与所有与低压配电线路连接的分布式电源7停止。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2012182918A System stabilization control system and system stabilization control method 审中-公开
标题翻译：系统稳定控制系统和系统稳定控制方法
公开(公告)号：JP2012182918A
公开(公告)日：2012-09-20
申请号：JP2011044490
申请日：2011-03-01
申请人： Mitsubishi Electric Corp , Tokyo Electric Power Co Inc:The , 三菱電機株式会社 , 東京電力株式会社
发明人： KOWADA YASUYUKI , OSHIDA HIDEJI , KUROSE TAKESHI , SAKAGUCHI HIROJI , SAITO TADASHI , YASUDA TADAAKI
IPC分类号： H02J3/24
摘要： PROBLEM TO BE SOLVED: To provide a system stabilization control system and a system stabilization control method which suppress unstable phenomenon with a smaller amount of control by suppressing step out and weak brake phenomenon appropriately.SOLUTION: In the system stabilization control system and the system stabilization control method which are applied to a power system of supplying power to a main system from a power station equipped with a plurality of generators and which stabilize the power system by controlling the amount of power supplied from the power station upon occurrence of a fault on the basis only of the measurement information at its own end, step out and weak brake phenomenon are suppressed appropriately by combining power swing first wave control, power swing second wave control, power swing N wave control, and weak brake control.
摘要翻译：要解决的问题：提供一种系统稳定控制系统和系统稳定控制方法，其通过适当地抑制步进和弱制动现象来以较少的控制量来抑制不稳定现象。解决方案：在系统稳定控制系统和系统稳定控制方法中，应用于从配备有多个发电机的电站向主系统供电的电力系统，并通过控制电力系统来稳定电力系统仅基于其自身端的测量信息而发生故障时从发电站供电的功率，通过组合功率摆动第一波控制，功率摆动第二波控制，功率摆动N波控制，制动控制不良。版权所有（C）2012，JPO＆INPIT

3. 发明专利

JP2013141406A System stabilization control system and system stabilization control method 有权
标题翻译：系统稳定控制系统和系统稳定控制方法
公开(公告)号：JP2013141406A
公开(公告)日：2013-07-18
申请号：JP2013078483
申请日：2013-04-04
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： KOWADA YASUYUKI , OSHIDA HIDEJI , SAKAGUCHI HIROJI
IPC分类号： H02J3/24 , H02P9/04
摘要： PROBLEM TO BE SOLVED: To provide a system stabilization control system for stabilizing a power system which implements stabilization control effective to an nth-wave step-out phenomenon.SOLUTION: When the least square method is applied to pieces of information on generator output and generator phase angle calculated with the use of data acquired from a power system to estimate a power-phase difference angle curve, the value of a weighting factor given to less reliable data is reduced. Acceleration energy (V) and deceleration energy (V) are calculated from the estimated power-phase difference angle curve (P-δ curve). A stability determination is made on the basis of a magnitude comparison between the calculated acceleration energy and deceleration energy. On the basis of the result of stability determination, a power supply from a power plant is controlled.
摘要翻译：要解决的问题：提供一种用于稳定电力系统的系统稳定控制系统，其实现对第n波步出现现象有效的稳定控制。解决方案：当将最小二乘法应用于发电机输出和发电机的信息通过使用从电力系统获取的数据计算的相位角来估计功率相位差角度曲线，减少了给予不太可靠的数据的加权因子的值。根据估计的功率相位差角曲线（P-δ曲线）计算加速能（V）和减速能（V）。基于所计算的加速能量与减速能量之间的大小比较，进行稳定性判定。根据稳定性确定的结果，控制发电厂的电力供应。

4. 发明专利

JP2011050152A System stabilizing system 有权
标题翻译：系统稳定系统
公开(公告)号：JP2011050152A
公开(公告)日：2011-03-10
申请号：JP2009195501
申请日：2009-08-26
申请人： Mitsubishi Electric Corp , Okinawa Electric Power Co Ltd , 三菱電機株式会社 , 沖縄電力株式会社
发明人： OSHIDA HIDEJI , KOWADA YASUYUKI , MAEDA TORU , TAKAHASHI TAKAHIRO , HIGA YASUSHI , YAMASATO KENICHIRO , KANESHIMA YASUHIRO , KANESHIRO FUMINAO , OYAMA TOSHIKATSU , NAKAMATSU HISAHIRO , MIYAGI YUKITO
IPC分类号： H02J3/00
摘要： PROBLEM TO BE SOLVED: To provide a reliable system stabilizing system wherein a system can be properly and easily stabilized before the system frequency is deviated from a reduction tolerance limit.
SOLUTION: The system stabilizing system includes a means 101 for detecting continuous reduction in the effective power output PE of generators GA1, ..., GAn, and a means 102 for detecting continuous reduction in system frequency. When the effective power output PE of the generators and the system frequency F are both continuously reduced according to the detection by these means 101, 102, the system disconnects loads L1, L2, ..., Ln equivalent to the effective power output of the generators.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供可靠的系统稳定系统，其中系统可以在系统频率偏离减小容许限度之前被适当且容易地稳定。解决方案：系统稳定系统包括用于检测发电机GA1，...，GAn的有效功率输出PE的连续减小的装置101和用于检测系统频率的连续降低的装置102。当根据这些装置101,102的检测，当发电机的有效功率输出PE和系统频率F都连续地减小时，系统断开相当于有效功率输出的负载L1，L2，...，Ln 发电机。版权所有（C）2011，JPO＆INPIT

5. 发明专利

JP2010207035A System and method for controlling system stabilization 有权
标题翻译：用于控制系统稳定的系统和方法
公开(公告)号：JP2010207035A
公开(公告)日：2010-09-16
申请号：JP2009052405
申请日：2009-03-05
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： KOWADA YASUYUKI , OSHIDA HIDEJI , SAKAGUCHI HIROJI
IPC分类号： H02J3/24
摘要： PROBLEM TO BE SOLVED: To ensure effective stabilization control of an N-wave step-out phenomenon in a system stabilization control system for stabilization of a power system. SOLUTION: When estimating a power phase difference angle curve by applying the least-square method in each information about electric generator outputs and electric generator phase angles computed from the data gained from the power system, the value of weighting coefficient granted to low reliability data is estimated to be small; acceleration energy (VA) and deceleration energy (VD) are computed from an estimated power phase difference angle curve (P-δ curve); the stabilization is recognized from the comparison of magnitude between the computed acceleration energy and the deceleration energy; and a power supply amount from a power plant is controlled based on the stabilization recognition result. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：确保用于稳定电力系统的系统稳定控制系统中的N波失步现象的有效的稳定化控制。
解决方案：通过在从电力系统获得的数据计算出的关于发电机输出和发电机相位角的每个信息中应用最小二乘法估计功率相位差角曲线，赋予低权重系数的值可靠性数据估计很小; 根据估计的功率相位差角曲线（P-δ曲线）计算加速能量（VA）和减速能量（VD）; 从计算的加速能量和减速能量之间的大小的比较可以看出稳定性; 并且基于稳定识别结果来控制来自发电厂的电力供给量。版权所有（C）2010，JPO＆INPIT

6. 发明专利

JP2008148487A System stabilization control system 有权
标题翻译：系统稳定控制系统
公开(公告)号：JP2008148487A
公开(公告)日：2008-06-26
申请号：JP2006334344
申请日：2006-12-12
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： OSHIDA HIDEJI , KOWADA YASUYUKI , SASAKI TAKASHI
IPC分类号： H02J3/24 , H02P9/00
摘要： PROBLEM TO BE SOLVED: To improve system stabilization control in a system stabilization control system in view of the fact that a fluctuation period of a power system is affected by power generator capacity, an inter-power generator distance, a power generator control system or the like, and when using a fixed fluctuation estimation expression, some systems to which the system stabilization control system is installed cause an error in the estimation of the power generator output due to the mismatch between the fluctuation period and the estimating expression, resulting in failure to secure the accuracy of stabilization control. SOLUTION: The system stabilization control system OLSS suppresses the effective power fluctuation after failure removal in a local system by controlling the effective power by partially shutting down the operating generator on the occurrence of failures to maintain stability in a local system wherein a plurality of generators G1 to Gn are operated concurrently. System stabilization control is carried out based on the estimation of the effective power fluctuation by the estimation expression corresponding to the cycle of the effective power fluctuation. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了改善系统稳定控制系统中的系统稳定性控制，考虑到电力系统的波动周期受发电机容量，发电机间距，发电机控制系统等，并且当使用固定波动估计表达式时，系统稳定控制系统被安装的一些系统由于波动周期和估计表达式之间的不匹配而导致在发电机输出的估计中的误差，导致无法确保稳定控制的准确性。解决方案：系统稳定控制系统OLSS通过在出现故障的情况下部分关闭操作发电机来控制有效功率来抑制本地系统故障消除后的有效功率波动，以保持本地系统的稳定性，其中多个的发电机G1〜Gn同时工作。基于有效功率波动的估计，通过与有效功率波动的周期对应的估计表达式进行系统稳定控制。版权所有（C）2008，JPO＆INPIT

7. 发明专利

JP2007209085A System stabilization control system 有权
标题翻译：系统稳定控制系统
公开(公告)号：JP2007209085A
公开(公告)日：2007-08-16
申请号：JP2006023030
申请日：2006-01-31
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： SASAKI TAKASHI , KOWADA YASUYUKI , OSHIDA HIDEJI
IPC分类号： H02J3/24 , H02J3/00
摘要： PROBLEM TO BE SOLVED: To make a desired system stabilization control device of each power plant control system stabilization without using a terminal device and a transmission channel. SOLUTION: The system stabilization system is constituted such that: power plant bus bars BA, BB are connected via cables to an intermediate bus bar B4 connected to a main system via a cable, respectively; the system stabilization control devices 10A, 20B are arranged in a plurality of the power plants 1, 2, respectively, which are constituted of a plurality of generators connected to the power plant bus bars via blockers CB, respectively; the own system stabilization control device of each power plant is autonomously operated when an accident occurs in the cable; and the plurality of generators in the self power plant are controlled so as to selectively be cut off from the power plant bus bar of the self power plant by the blockers. It is determined whether each system stabilization control device is in a mode that the generator in the self power plant is cut off from an electricity amount at a self-end in the occurrence of the accident, and when it is determined that the device in not in the mode that the generator of the self power plant is cut off, the generator cut-off control of the self power plant is locked. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了使每个发电厂控制系统的期望的系统稳定控制装置稳定而不使用终端装置和传输通道。解决方案：系统稳定系统构成为：发电厂母线BA，BB通过电缆分别连接到通过电缆连接到主系统的中间母线B4; 系统稳定控制装置10A，20B分别布置在多个发电厂1,2中，这些发电厂分别由经由阻塞器CB连接到发电厂汇流条的多个发电机构成; 当电缆发生事故时，每个发电厂自身的系统稳定控制装置自动运行; 并且控制自发电厂中的多个发电机，以便通过阻断器选择性地从自发电厂的发电厂汇流条切断。确定每个系统稳定控制装置是否处于在发生事故时在自发电厂中的发电机从自身的电量切断的模式，并且当确定该装置不在在自动发电厂的发电机被切断的模式下，自动发电厂的发电机切断控制被锁定。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2011254608A System stabilization control system and system stabilization control method 有权
标题翻译：系统稳定控制系统和系统稳定控制方法
公开(公告)号：JP2011254608A
公开(公告)日：2011-12-15
申请号：JP2010126184
申请日：2010-06-01
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： KOWADA YASUYUKI , OSHIDA HIDEJI
IPC分类号： H02J3/24
摘要： PROBLEM TO BE SOLVED: To enable suppression of unstable phenomenon with a smaller control amount in a system stabilization control system aiming at stabilization of an electric power system.SOLUTION: In the case of estimating a constant term, a coefficient of a sine term and a coefficient of a cosine term in a power phase difference angle curve using each piece of information on a generator output and an electric generator phase angle calculated using data acquired from an electric power system, the constant term and each coefficient are estimated using information of both an effective power output and a reactive power output as information on the generator output, and an acceleration energy (V) and a deceleration energy (V) are calculated from the estimated power phase difference angle curve (P-δ curve), and stability discrimination is performed by magnitude comparison of the calculated acceleration energy and deceleration energy, and the control of a power supply amount from an electric power plant is performed on the basis of the result of the stability discrimination.
摘要翻译：要解决的问题：为了在系统稳定控制系统中以更小的控制量抑制不稳定现象，目的在于稳定电力系统。解决方案：在估计常数项的情况下，使用在发电机输出上的每条信息和计算出的发电机相角的功率相位差角曲线中的正弦项的系数和余弦项的系数使用从电力系统获取的数据，使用有效功率输出和无功功率输出两者的信息来估计常数项和每个系数作为关于发电机输出的信息，以及加速能量（V A ）和减速能量（V D ），由稳定性判定由估计功率相位差角曲线（P-δ曲线）基于稳定性判别的结果，进行计算出的加速能量和减速能量的大小比较以及来自发电厂的电力供给量的控制。版权所有（C）2012，JPO＆INPIT

9. 发明专利

JP2002034156A METHOD OF SYSTEM STABILIZING CONTROL 失效
公开(公告)号：JP2002034156A
公开(公告)日：2002-01-31
申请号：JP2000215449
申请日：2000-07-17
申请人： MITSUBISHI ELECTRIC CORP
发明人： KIBI KAZUHITO , OSHIDA HIDEJI
IPC分类号： H02J3/24 , H02P9/00
摘要： PROBLEM TO BE SOLVED: To perform stabilizing control by calculating a proper control amount of power generation when an accident occurs. SOLUTION: The flow is obtained with a sensor of voltage and current (ST1). When an accident occurs (ST2), a classification of the accident is grasped by the flow just before the accident and accident information after the accident, in the case that the classification can be estimated by a stabilizing method (control amount calculating method or the like by P-Δδ curve) by a prediction in ST3, ST4 to 7 are selected, and in the case that estimation of the P-Δδ curve is difficult, a control method (ST9) using a necessary stabilizing control table determined before the fact is selected. The stabilizing method thus selected is executed. Accordingly, high accurate control flexibly corresponding to the condition of the accident can be executed.

10. 发明专利

JPH1042470A SYSTEM STABILIZATION CONTROLLER, CONTROL METHOD AND METHOD FOR GENERATING CONTROL PATTERN OF GENERATOR CONTROL AMOUNT 失效
公开(公告)号：JPH1042470A
公开(公告)日：1998-02-13
申请号：JP19377496
申请日：1996-07-23
申请人： MITSUBISHI ELECTRIC CORP
发明人： KIBI KAZUHITO , OSHIDA HIDEJI
IPC分类号： H02J3/00 , H02J3/24 , H02P9/00
摘要： PROBLEM TO BE SOLVED: To stabilize a power system at a generator control amount corresponding to the type of fault and the state of system upon the occurrence of a fault in the power system. SOLUTION: Effective power flows from transmission lines 5E-5G (electrical outputs from generators 1A-1C) are calculated constantly by a measuring controller 8, based on current and voltage data received from current transformers 3A-3C and a transformer 6. When a fault occurs on a transmission line 5B and the voltage of a bus 2A drops below a predetermined level, the measuring controller 8 makes a transition from a normal mode to a monitor mode. A decision is than made whether or not the power system is stable, by comparing the type of fault and the effective power flow with a control amount characteristic chart representing a stable region and a generator control amount corresponding to the type of fault and a real time element (e.g. effective power). If the power system is unstable, a generator control amount is calculated from the control amount characteristic chart and trip signals are transmitted to circuit breakers 4A-4C, depending on the generator control amount in order to limit the power supply, thereby stabilizing the system.

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