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1. 发明专利

JP2012123450A Reactive power compensator 有权
标题翻译：无功补偿器
公开(公告)号：JP2012123450A
公开(公告)日：2012-06-28
申请号：JP2010271270
申请日：2010-12-06
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： MATSUDA AKIHIRO , KONO YOSHIYUKI , TAKEDA MASATOSHI
IPC分类号： G05F1/70 , H02J3/18
CPC分类号： H02J3/1828 , H02J3/1878 , Y02E40/12 , Y10T307/669
摘要： PROBLEM TO BE SOLVED: To provide a reactive power compensator capable of using a simple configuration to control multiple SVCs in a coordinated manner and of controlling output of a steady-state SVC to correspond to a voltage variation when a power system is disturbed, in the case where the SVCs are mutually arranged nearby.SOLUTION: An SVC 1 is connected to a bus line 7 and is controlled by an SVC control part 4. A variable voltage generation part 41 comprises a voltage reference circuit 141 for outputting a voltage reference value. An SVC 2 is connected to a bus line 14 and is controlled by an SVC control part 3. A variable voltage generation part 31 comprises a primary delay control block 131 with a limiter for generating a comparison voltage that keeps pace with a predetermined delay characteristic and is limited within a predetermined range. An impedance value XS1 of slope reactance 42 of the SVC 1 is set at a level lower than an impedance value XS2 of slope reactance 32 of the SVC 2.
摘要翻译：要解决的问题：提供能够使用简单配置以协调的方式控制多个SVC的无功功率补偿器，并且在电力系统被干扰时控制稳态SVC的输出以对应于电压变化在SVC相邻配置的情况下。解决方案：SVC 1连接到总线7并由SVC控制部分4控制。可变电压产生部分41包括用于输出电压参考值的电压参考电路141。 SVC 2连接到总线14并由SVC控制部分3控制。可变电压产生部分31包括具有限制器的主延迟控制块131，用于产生与预定延迟特性保持同步的比较电压，被限制在预定范围内。 SVC 1的斜坡电抗42的阻抗值XS1被设定为低于SVC 2的斜率电抗32的阻抗值XS2的水平。（C）2012，JPO＆INPIT

2. 发明专利

JP2006217714A Power system operation method 有权
标题翻译：电力系统操作方法
公开(公告)号：JP2006217714A
公开(公告)日：2006-08-17
申请号：JP2005026693
申请日：2005-02-02
申请人： Chubu Electric Power Co Inc , Mitsubishi Electric Corp , 三菱電機株式会社 , 中部電力株式会社
发明人： MATSUDA AKIHIRO , KONO YOSHIYUKI , SURESHI CHAND VERMA , OGAWA SHIGEAKI , TAKAGI TERUO , KIRITA MASAYUKI , KATAGIRI TORU
IPC分类号： H02H3/26
摘要： PROBLEM TO BE SOLVED: To prevent the needless action at external closed-circuit failure without dropping the protective function for internal closed-circuit failure within the protection territory of a circuit-for-short-circuit selecting protective relay device, in the operation of a power system which protects each circuit of a three-phase parallel two-circuit transmission line which has a divergent system to which a synchronous generator is connected by means of a circuit-for-short-circuit selecting protective relay device. SOLUTION: The power system is operated, changing the setting of the operating current value of an overcurrent relay 50SA for a short circuit selecting relay out of a short circuit selecting relay 50S and an overcurrent relay 50SA for a short circuit selecting relay, which are the components of the circuit-for-short-circuit selecting protective relay device SS protecting each circuit of three-phase parallel two-circuit transmission lines 1L and 2L having divergent systems Branch, so as to prevent the needless action of the circuit-for-short-circuit selecting protective relay device SS by an induction motor M in the divergent system at external closed-circuit failure. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了防止在外部闭路故障时的不必要的动作，而不会降低用于短路选择保护继电器的保护区内的内部闭路故障的保护功能，在电力系统的运行，其保护具有通过短路电路选择保护继电器装置连接同步发电机的发散系统的三相并联双回路传输线路的每个电路。
解决方案：对短路选择继电器50S和短路选择继电器的过电流继电器50SA进行短路选择继电器的过电流继电器50SA的工作电流值的设定，它们是用于保护具有发散系统分支的三相并联双回路传输线1L和2L的每个电路的短路选择保护继电器装置SS的部件，以防止电路 - 短路选择保护继电器SS通过外部闭路故障在发散系统中的感应电动机M。版权所有（C）2006，JPO＆NCIPI

3. 发明专利

JP2004020284A Device for orienting accident point 审中-公开
公开(公告)号：JP2004020284A
公开(公告)日：2004-01-22
申请号：JP2002173210
申请日：2002-06-13
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： MATSUDA AKIHIRO , ITO KENJI
IPC分类号： G01R31/08 , H02H3/28
摘要： PROBLEM TO BE SOLVED: To allow accident point orientation using PCM current differential relay units of which the lines are separated. SOLUTION: This device is provided with the PCM current differential relay units 2A-2D installed in the respective lines for protecting a transmission line comprising at least the two lines 1L, 2L, the first means (52TX relay) for detecting an accident in the line to output a start signal for starting memory holding of a data in each of the lines to the PCM current differential relay unit, the second means 11 for executing synchronization correcting processing between the both lines for the memory held data in the PCM current differential relay units, the third means 12 for orientation-computing a distance up to the accident point based on the data synchronization correction-processed by the second means, and the fourth means 13 for outputting a result calculated by the third means. The synchronization correcting processing by the second means is carried out using a bus bar voltage of the transmission line as a reference. COPYRIGHT: (C)2004,JPO

4. 发明专利

JP2003018741A Current differential relay 审中-公开
标题翻译：当前差分继电器
公开(公告)号：JP2003018741A
公开(公告)日：2003-01-17
申请号：JP2001198230
申请日：2001-06-29
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： MATSUDA AKIHIRO , ITO KENJI
IPC分类号： H02H7/045
摘要： PROBLEM TO BE SOLVED: To prevent equipment actuated by the output of a current differential relay from malfunctioning when the level of higher harmonic components of differential current in the current differential relay is lower than the actual level.
SOLUTION: A current differential relay, which outputs actuating output TS when the differential current is equal to or above a prescribed level and the ratio between the input signal and the differential current before the difference is taken is within a prescribed range, is provided with locking means 8A, 8B, 8C, 8D that output locking signals to the actuating output when the content ratio of the second higher harmonic component in phase currents YIa, YIb, and YIc on the Y side is equal to or above a prescribed level.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：当电流差动继电器中差动电流的高次谐波分量的电平低于实际电平时，防止由电流差动继电器的输出驱动的设备发生故障。解决方案：电流差动继电器在差动电流等于或高于规定水平时输出启动输出TS，并且在差值之前输入信号与差动电流之间的比值在规定范围内，提供锁定当Y侧的相电流YIa，YIb和YIc中的第二高次谐波分量的含量比等于或高于规定水平时，将驱动输出的锁定信号输出到装置8A，8B，8C，8D。

5. 发明专利

JP2015042031A 無効電力補償装置および無効電力補償システム有权
标题翻译：无功补偿装置及无功补偿系统
公开(公告)号：JP2015042031A
公开(公告)日：2015-03-02
申请号：JP2013170397
申请日：2013-08-20
申请人：三菱電機株式会社 , Mitsubishi Electric Corp
发明人： MATSUDA AKIHIRO , OGUSA SHINICHI , TAKEDA MASATOSHI
IPC分类号： H02J3/18
CPC分类号： G05F1/70
摘要：【課題】精度良く系統インピーダンスを求めることによって系統電圧の制御性を高めることが可能な無効電力補償装置を提供する。【解決手段】無効電力補償装置10において、制御部45は、第1の動作モード時に、検出された系統電圧Vと制御パラメータとに基づいて、無効電力出力部12によって出力される無効電力Qの大きさを制御する。制御部45は、第2の動作モード時に出力変化期間を設け、この出力変化期間において無効電力出力部12によって電力系統100に出力される無効電力Qの大きさを変化させる。制御部45は、出力変化期間内の複数の検出時点で検出された系統電圧の変化量&Dgr;Vと対応する無効電力の変化量&Dgr;Qとに基づいて複数の検出時点における電力系統の系統インピーダンスXを算出し、算出した複数の系統インピーダンスXのばらつきが許容範囲内である場合に、算出した系統インピーダンスXに基づいて制御パラメータを調整する。【選択図】図1
摘要翻译：要解决的问题：提供一种能够通过确定系统阻抗来提高系统电压的可控性的无功补偿装置。解决方案：在无功补偿装置10中，在第一操作模式中，控制部分45控制幅度基于检测到的系统电压V和控制参数从无功功率输出部12输出的无功功率Q。在第二操作模式中，控制部45设定输出变化期间，并且在输出变化期间，将从无功功率输出部12输出的无功功率Q的大小变更为电力系统100。控制部45基于在输出变化期间内的多个检测时间点检测到的系统电压的变化＆Dgr; V，对应的变化＆Dgr，计算多个检测时间点的电力系统的系统阻抗X. Q，并且当系统阻抗X的多次计算的分散在允许范围内时，基于所计算的系统阻抗X来调整控制参数。

6. 发明专利

JP2009177914A Flicker improvement effect evaluation system 审中-公开
标题翻译：闪光改进效果评估系统
公开(公告)号：JP2009177914A
公开(公告)日：2009-08-06
申请号：JP2008012750
申请日：2008-01-23
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： MATSUDA AKIHIRO
IPC分类号： H02J3/16 , H02J3/00
CPC分类号： H02J3/1871
摘要： PROBLEM TO BE SOLVED: To provide a flicker improvement effect evaluation system capable of accurately evaluating the effect of flicker improvement by a static reactive power compensator. SOLUTION: The flicker improvement effect evaluation system is used to evaluate the effect of improvement of voltage flicker in an electric power system into which it is planned to introduce a static reactive power compensator. A system voltage computation unit 30 computes a compensation current and the system impedance of the electric power system based on actual measurement data of system voltage Vf and load current If read from a data read-out unit 20. Based on the results of the computation and the actual measurement data, a system voltage before improvement, or the current system voltage and system voltage after improvement, or a system voltage obtained when the static reactive power compensator is installed on a bus bar are simulatively computed. When the respective flicker values of the system voltage before improvement and the system voltage after improvement amplified through an amplifying circuit 40 are measured by a flicker meter 50, the rate of improvement by the static reactive power compensator is computed from the individual flicker values. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供能够准确地评估静态无功功率补偿器的闪烁改善效果的闪烁改善效果评估系统。解决方案：闪电改善效果评估系统用于评估在计划引入静态无功补偿器的电力系统中电压闪烁改善的效果。系统电压计算单元30基于从数据读出单元20读取的系统电压Vf和负载电流If的实际测量数据来计算电力系统的补偿电流和系统阻抗。基于计算结果和仿真计算实际测量数据，改进前的系统电压，或改进后的当前系统电压和系统电压，或者将静态无功功率补偿器安装在母线上时获得的系统电压。当通过闪烁计50测量改善前的系统电压各自的闪烁值和通过放大电路40放大的改善后的系统电压时，根据各个闪烁值计算静态无功功率补偿器的改进率。版权所有（C）2009，JPO＆INPIT

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