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    • 2. 发明专利
    • Power system stabilizing apparatus
    • 电力系统稳定装置
    • JP2007189840A
    • 2007-07-26
    • JP2006006202
    • 2006-01-13
    • Chubu Electric Power Co IncToshiba CorpTsuru Gakuen中部電力株式会社学校法人鶴学園株式会社東芝
    • TAKASAKI KOTARONISHIIRI HIDEAKIKAJIWARA TOSHIYUKIITO HISATOKUTATE RYUJIMATSUBARA MITSUGIKUBOKAWA JUNJI
    • H02J3/00H02J3/24H02J13/00H02P9/14
    • PROBLEM TO BE SOLVED: To provide a power system stabilizing apparatus, capable of performing stabilization control by the most appropriate generator control at the occurrence of system failure, by calculating the stability state in the present system state as the threshold effective power flow and by determining the stability at a high speed, using the difference between the threshold effective power flow and the present power flow. SOLUTION: A system data input means 1 fetches the state of an on-line system. A state estimate/calculation means 2 performs calculation, an assumed failure-setting means 3 sets the system failures to be assumed, and a threshold flow calculation means 11 calculates the most proper threshold effective power flow. An effective power surplus amount is calculated from the data of these results and a simple stability determining means 12 determines the stability. If the state is decided as being unstable, a generator control measure/calculation means 4 calculates the stability in details and calculates the control measures for unstable generator; and when actual system failure occurs, a stabilization control means 5 performs control measures for the generator. COPYRIGHT: (C)2007,JPO&INPIT
    • 解决的问题:提供一种电力系统稳定装置,能够通过在本系统状态下计算作为阈值有效功率流的稳定状态,在发生系统故障时通过最合适的发电机控制进行稳定控制 并且通过使用阈值有效功率流与当前功率流之间的差来确定高速的稳定性。 解决方案:系统数据输入装置1取出在线系统的状态。 状态估计/计算装置2执行计算,假设故障设定装置3设定要假设的系统故障,阈值流量计算装置11计算最合适的阈值有效功率流。 从这些结果的数据计算有效的功率剩余量,并且简单的稳定性确定装置12确定稳定性。 如果状态判定为不稳定,则发电机控制测量/计算单元4详细计算稳定性,并计算不稳定发电机的控制措施; 并且当发生实际的系统故障时,稳定控制装置5对发电机进行控制措施。 版权所有(C)2007,JPO&INPIT
    • 3. 发明专利
    • Power system stabilizing apparatus and method of controlling the same
    • 电力系统稳定装置及其控制方法
    • JP2011135688A
    • 2011-07-07
    • JP2009292537
    • 2009-12-24
    • Chubu Electric Power Co IncToshiba Corp中部電力株式会社株式会社東芝
    • SHIMOMURA KIMIHIKOMAEKAWA KAZUOHIRANO DAIGOSUZUKI KOJIKIMURA MISAOKOMATA KAZUYANAKAMURA TADASHIKAJIWARA TOSHIYUKI
    • H02J3/24H02J3/00
    • PROBLEM TO BE SOLVED: To obtain a power system stabilizing apparatus capable of stabilizing both frequencies and voltages of a separate system, and to provide a method of controlling the same.
      SOLUTION: At a control execution unit 29, two-staged control, i.e., first-stage control and second-stage control, is sequentially carried out. A second-stage control selection unit 24 selects either disconnection of generators 1a to 1c or loads 5a to 5c or disconnection or connection of phase modifying devices 6a to 6c as control operation in the second-stage control based on the following combination: a combination of the plus or minus of a frequency variation and the plus or minus of a voltage variation obtained when a certain time has passed after the execution of the first-stage control. Each operation amount in the second-stage control is computed by a correction effective power control computation unit 25, a correction reactive power control computation unit 26, an emergency effective power control computation unit 27, and an emergency reactive power control computation unit 28.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了获得能够稳定单独系统的频率和电压的电力系统稳定装置,并且提供一种控制它的方法。 解决方案:在控制执行单元29处,依次执行两级控制,即第一级控制和第二级控制。 第二级控制选择单元24基于以下组合,选择发电机1a至1c的断开或负载5a至5c或相位修改设备6a至6c的断开或连接作为第二级控制中的控制操作:组合 频率变化的加或减,以及在执行第一级控制之后经过一定时间时获得的电压变化的正负。 校正有效功率控制计算单元25,校正无功功率控制计算单元26,紧急有功功率控制计算单元27和紧急无功功率控制计算单元28来计算第二级控制中的每个操作量。 P>版权所有(C)2011,JPO&INPIT
    • 4. 发明专利
    • Current differential relay system for protecting transmission line
    • 用于保护变速箱的电流差动继电器系统
    • JP2011015528A
    • 2011-01-20
    • JP2009157498
    • 2009-07-02
    • Toshiba Corp株式会社東芝
    • KAJIWARA TOSHIYUKISUKEGAWA YUKIO
    • H02H3/28
    • PROBLEM TO BE SOLVED: To provide a differential relay system for protecting transmission line, capable of performing countermeasure against excitation inrush current of a branch load, irrespective of a system condition, without damaging protection performance.SOLUTION: The system is provided with a self-end current measurement unit 200a measuring self-end current, a self-end current transmitting part 200b transmitting the measured self-end current to a counter end relay system and a counter end current receiving part 200c receiving a counter end current. A differential current generating part 201 obtains a difference between the self-end current and the counter end current. A content calculation unit 202 and a decision unit 203 are disposed as excitation inrush current decision elements 20. In the content calculation unit 202, a fundamental wave component included in differential current and a second harmonic component are extracted, and a content of the second harmonic component with respect to the fundamental wave component is calculated. The decision unit 203 determines whether the content is larger than a prescribed value or not. An output inhibiting part 204 sets an output inhibition signal based on decision results and inhibits output of a current differential relay element.
    • 要解决的问题:提供一种用于保护传输线路的差分继电器系统,能够对分支负载的励磁浪涌电流进行对策,而不考虑系统状况,而不损害保护性能。解决方案: 测量自身电流的终端电流测量单元200a,将测量的自身端电流传送到计数端继电器系统的自身电流发送部分200b和接收反向端电流的反向端电流接收部件200c。 差分电流产生部分201获得自身电流和对端电流之间的差。 内容计算单元202和判定单元203被设置为激励涌流判定元件20.在内容计算单元202中,提取包括在差分电流中的基波分量和二次谐波分量,并且二次谐波的内容 计算相对于基波分量的分量。 决定单元203确定内容是否大于规定值。 输出禁止部分204基于判定结果设置输出禁止信号,并禁止电流差动继电器元件的输出。
    • 5. 发明专利
    • Digital protector and controller
    • 数字保护器和控制器
    • JP2011010526A
    • 2011-01-13
    • JP2009153982
    • 2009-06-29
    • Toshiba Corp株式会社東芝
    • SUKEGAWA YUKIOKAJIWARA TOSHIYUKI
    • H02H3/05
    • PROBLEM TO BE SOLVED: To provide a digital protector and controller that can readily find defects in an automatic checking circuit and timely, without an inspection tour by a maintenance worker and contributes to improvement in operation reliability, by enhancing the operation accuracy of the automatic checking circuit.SOLUTION: An on-delay timer 11 is set to a time T2 slightly longer than a checking period T1, preliminarily set in the automatic checking circuit 1. When a checking execution and finish signal 5 is not generated in the automatic checking circuit 1, even if the time T2 arrives and passes, the on-delay timer 11 is counted up, so that an alarm 12 indicating inexecution of automatic checking is output. When a pulse counter 13 counts the checking execution finish signal 5 twice within the checking period T1, it issues a high-frequency alarm 14.
    • 要解决的问题:提供一种能够容易地在自动检查电路中发现缺陷的数字保护器和控制器,没有维护人员的巡视,并且有助于提高操作可靠性,通过提高自动检查的操作精度 电路。解决方案:接通延迟定时器11被设置为比自动检查电路1中预先设置的检查周期T1稍长的时间T2。当在自动检查电路1中不产生检查执行和结束信号5时 即使时间T2到达并通过,导通延迟定时器11也向上计数,从而输出指示不执行自动检查的警报12。 当脉冲计数器13在检查周期T1内对检查执行完成信号5进行两次计数时,它发出高频警报器14。
    • 6. 发明专利
    • System and method using secondary battery for reducing transmission loss
    • 使用二次电池减少传输损失的系统和方法
    • JP2008048500A
    • 2008-02-28
    • JP2006219987
    • 2006-08-11
    • Kansai Electric Power Co Inc:TheToshiba Corp株式会社東芝関西電力株式会社
    • KOCHI KATSUHIKOKATO MASAICHIKIMURA MISAOHAYASHI HIDEKIKAJIWARA TOSHIYUKI
    • H02J3/32H01M10/44H02J3/12
    • Y02E60/12
    • PROBLEM TO BE SOLVED: To provide a system and a method using a secondary battery for reducing transmission loss wherein the reserve capacity of a secondary battery on the customer side can be sufficiently and effectively utilized to directly reduce a power flow (active power, reactive power) through a line and thus an electric power system can be efficiently controlled. SOLUTION: A command generator 7 supplies a power command value for reducing a current passed through a line to a controller 6 for controlling a secondary battery 5. The command generator 7 is inputted with: a reactive power value Q det as an output signal of a power detector 8; an active power value P det as an output signal of a power detector 3; and the voltage value V det of a distribution line 2 as an output signal of a voltage detector 9. Based on these inputs, the command generator 7 supplies an active power command value P ref and a reactive power command value Q ref to the controller 6. The controller 6 outputs a control signal corresponding to the inputted active power command value P ref and the reactive power command value Q ref and supplies it to the power conversion unit 52 of the secondary battery 5. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种使用二次电池以减少传输损耗的系统和方法,其中可以充分有效地利用客户侧的二次电池的备用容量来直接降低功率流(有功功率 ,无功功率),从而能够有效地控制电力系统。 解决方案:命令发生器7将用于将通过线路的电流减少到用于控制二次电池5的控制器6的电力指令值。命令发生器7输入无功功率值Q det 作为功率检测器8的输出信号; 有功功率值P det 作为功率检测器3的输出信号; 以及作为电压检测器9的输出信号的配线2的电压值V det 。根据这些输入,命令发生器7提供有功功率指令值P SB>和无功功率指令值Q ref 。控制器6输出与输入的有功功率指令值P ref 相对应的控制信号,无功功率 指令值Q ref ,并将其提供给二次电池5的电力转换单元52.版权所有(C)2008,JPO&INPIT
    • 7. 发明专利
    • Power system controller using secondary battery and method therfor, power generation planing unit, real-time controller, and power system control system
    • 电力系统控制器使用二次电池和方法,发电机组,实时控制器和电力系统控制系统
    • JP2008067469A
    • 2008-03-21
    • JP2006241608
    • 2006-09-06
    • Kansai Electric Power Co Inc:TheToshiba Corp株式会社東芝関西電力株式会社
    • KOCHI KATSUHIKOHAYASHI HIDEKIKAJIWARA TOSHIYUKIKIMURA MISAOKATO MASAICHI
    • H02J3/32H01M10/44H02J3/46
    • Y02E70/30
    • PROBLEM TO BE SOLVED: To enhance total control effect by realizing general control which integrates both the demand-supply control and transmission loss reduction control, and effectively utilizes the capacity of a secondary battery. SOLUTION: A power system controller 30 is equipped with an acquirer 301, an integrated control distribution decider 302, a controller 303, and a display 304. The acquirer 301 acquires the amount of charge of each secondary battery 20, and also acquires the system state information related to the system states such as the voltage, the current, etc. of a power system 10. The integrated control distribution decider 302 decides the operation schedule or the amount of charge/discharge of the secondary battery 20, by performing the evaluation related to both the effect on the demand-supply control and the effect on transmission loss reduction control, when the output distribution of the secondary battery 20 is changed, using the information about the acquired amount of charge, the system state, the operation schedule, etc. The controller 303 outputs the decided operation schedule or the control command of the amount of charge/discharge to the secondary battery control system 21 of the corresponding secondary battery 20. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:通过实现集成了需求供给控制和传输损耗减少控制的一般控制来提高总控制效果,并且有效地利用二次电池的容量。 电力系统控制器30配备有收单单元301,综合控制分配决定器302,控制器303以及显示器304.收单单元301获取各二次电池20的费用量,并取得 与系统状态相关的系统状态信息,例如电力系统10的电压,电流等。综合控制分配决定器302通过执行二次电池20的运行计划或二次电池20的充电/放电量来确定 使用关于所获取的充电量,系统状态,操作的信息,当二次电池20的输出分布改变时,与对需求供给控制的影响和对传输损耗减少控制的影响有关的评估 时间表等。控制器303将确定的操作时间表或充电/放电量的控制命令输出到cor的二次电池控制系统21 (C)2008,JPO&INPIT