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    • 1. 发明专利
    • Frequency controller and frequency control method
    • 频率控制器和频率控制方法
    • JP2008167528A
    • 2008-07-17
    • JP2006352014
    • 2006-12-27
    • Central Res Inst Of Electric Power IndOkinawa Electric Power Co Ltd沖縄電力株式会社財団法人電力中央研究所
    • AMANO HIROYUKIINOUE TOSHIOOYAMA TOSHIKATSUHIGA YASUSHIYAMASATO KENICHIROKANESHIMA YASUHIROKANESHIRO FUMINAONAKAMATSU HISAHIROMIYAGI YUKITO
    • H02J3/24
    • PROBLEM TO BE SOLVED: To compute the amount of load limitation at power drop accurately and simply. SOLUTION: A spinning reserve computer 150 computes spinning reserve activated in each generator when frequency reaches a value (a tolerable lower limit value + margin), according to the present operation state (output, GF operation/LL operation, and ambient temperature) of a generator, by simple computation accurately, and the first stage load limitation amount computer 160 computes the amount of load limitation at power drop, by subtracting the total of spinning reserve of each generator, the amount of load drop, and the amount of load decrease from the amount of power drop. A second stage load limitation amount computer 180 computes the amount of load limitation on the second stage, based on the change of frequency, in addition to the first stage control based on the amount of load limitation computed by the first stage load limitation amount computer 160, thus it is provided with second-stage control. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:准确,简单地计算掉电负载限制的量。 解决方案:旋转储备计算机150根据当前的运行状态(输出,GF运行/ LL运转,环境温度等),在频率达到值(容许下限值+余量)的情况下,计算出在各发电机中激活的旋转储备 ),通过简单计算,第一级负载限制量计算机160通过减去每个发电机的旋转储备的总和,负载的下降量以及负载的下降量,计算掉电时的负载限制量 负载从功率下降量减少。 除了基于由第一级负载限制量计算机160计算出的负载限制量的第一级控制之外,第二级负载限制量计算机180还基于频率的变化来计算第二级的负载限制量 ,因此提供了第二级控制。 版权所有(C)2008,JPO&INPIT
    • 3. 发明专利
    • Emergent frequency controller and control method
    • 紧急频率控制器及控制方法
    • JP2008022612A
    • 2008-01-31
    • JP2006190782
    • 2006-07-11
    • Central Res Inst Of Electric Power Ind財団法人電力中央研究所
    • AMANO HIROYUKIINOUE TOSHIO
    • H02J3/24H02J3/00
    • PROBLEM TO BE SOLVED: To settle frequency within a tolerance even in case that system properties are beyond assumption when an emergent state of things has occurred. SOLUTION: In case that an emergent state of things such as power down, etc. occurs, a frequency change rate computer 130 computes the rate of change of frequency, using the measured value of frequency, and a unit inertial constant computer 140 computes the unit inertial constant of a generator parallel with a system and the unit inertial constant of a system, based on rated capacity and system capacity, and a demand-supply unbalance computer 160 computes demand-supply unbalance, based on the frequency change rate computed by the frequency change rate computer 130 and the unit inertial constant of the system computed by the unit inertial constant computer 140, and a second-stage control amount computer 170 computes the amount of control on the second stage, based on the demand-supply unbalance computed by the demand-supply unbalance computer 160, and an operating part 180 executes the control on the second stage, based on the amount of control computed by the second-stage control amount computer 170. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:即使发生事件的紧急状态,即使系统属性超出假设的情况下,也可以在容差内解决频率。 解决方案:在出现诸如断电等事件的紧急状态的情况下,频率变化率计算机130使用频率的测量值和单位惯性常数计算机140来计算频率变化率 基于额定容量和系统容量计算与系统并联的发电机的单位惯性常数和系统的单位惯性常数,并且供电不平衡计算机160基于计算出的频率变化率来计算需求供给不平衡 通过频率变化率计算机130和由单位惯性常数计算机140计算的系统的单位惯性常数,并且第二级控制量计算机170基于需求供给不平衡来计算第二级上的控制量 由需求供给不平衡计算机160计算,并且操作部180基于由第二级控制计算出的控制量执行第二级的控制 不计算机170.版权所有(C)2008,JPO&INPIT
    • 4. 发明专利
    • Power supply and demand control unit and method
    • 电源和需求控制单元及方法
    • JP2007282394A
    • 2007-10-25
    • JP2006106559
    • 2006-04-07
    • Central Res Inst Of Electric Power IndChugoku Electric Power Co Inc:The中国電力株式会社財団法人電力中央研究所
    • AMANO HIROYUKIINOUE TOSHIOISHIKAWA TAKAAKIMAKI KAZUNARI
    • H02J3/00G06Q10/04G06Q50/00G06Q50/06
    • PROBLEM TO BE SOLVED: To attain economical operation by reducing an output fluctuation margin of a LFC generator. SOLUTION: This control unit is configured so that a short-term customer demand estimating portion 120 estimates a short-term customer demand based on an actual same-day demand, a movement average calculating portion 130 calculates a movement average of a short-term customer demand estimating values and a command output portion 140 calculates a correction amount of power generation for each EDC generator based on the movement average and a schedule value and after the correction of the quantity of power generation based on the calculated correction amount, the quantity of power generation is instructed to the EDC generator. A set changing portion 150 receives region designation and changes the setting of a short-term customer demand estimation method, an estimated customer time and a movement average time. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:通过减小LFC发生器的输出波动余量来实现经济运行。

      解决方案:该控制单元被配置为使得短期客户需求估计部分120基于实际的当天需求来估计短期客户需求,移动平均计算部分130计算短时间的移动平均 客户需求估计值和命令输出部分140根据移动平均值和调度值,根据计算出的校正量,对发电量进行校正后,计算每个EDC发电机的发电校正量, 向EDC发电机指示发电量。 设定改变部分150接收区域指定并改变短期客户需求估计方法的设置,估计的顾客时间和移动平均时间。 版权所有(C)2008,JPO&INPIT

    • 5. 发明专利
    • Governor-free control device and governor-free control method
    • 无管制者免费控制装置及无政府主管的方法
    • JP2009197637A
    • 2009-09-03
    • JP2008038675
    • 2008-02-20
    • Central Res Inst Of Electric Power Ind財団法人電力中央研究所
    • AMANO HIROYUKIINOUE TOSHIO
    • F01D17/24F01D15/10F01D17/10F01K23/10F02C6/18
    • Y02E20/16
    • PROBLEM TO BE SOLVED: To exploit governor-free control in a combined cycle power plant.
      SOLUTION: Governor free control is performed in a steam turbine, and PI control is performed by using a value which is obtained by adding a governor-fee fluctuation 5 of an output of the steam turbine as a correction quantity to an output target value 4 as an output target value 6 after correction. A correction quantity computing section 100 computes the correction quantity 5 of the output target value by multiplying fluctuation of a steam control valve by governor free operation by a steam turbine output estimation value estimated based on electrical output 7 over the whole of a combined cycle power plant, considering output reaction characteristics of the steam turbine.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:在联合循环发电厂中开发无调速器控制。 解决方案:在蒸汽轮机中执行调速器自由控制,并且通过使用通过将蒸汽轮机的输出的调速器费用波动5作为校正量添加到输出目标而获得的值来执行PI控制 值4作为校正后的输出目标值6。 校正量计算部100通过将无调速器运转的蒸汽控制阀的波动与基于电输出7估计的蒸汽涡轮机输出估计值在整个联合循环发电厂中相乘来计算输出目标值的校正量5 考虑蒸汽轮机的输出反应特性。 版权所有(C)2009,JPO&INPIT
    • 6. 发明专利
    • Method, apparatus, and program for setting control system constant of electric power system
    • 用于设置电力系统控制系统常数的方法,装置和程序
    • JP2007325359A
    • 2007-12-13
    • JP2006150282
    • 2006-05-30
    • Central Res Inst Of Electric Power Ind財団法人電力中央研究所
    • AMANO HIROYUKIINOUE TOSHIO
    • H02J3/24
    • PROBLEM TO BE SOLVED: To appropriately produce the effect of attenuating fluctuation in in-generator phase difference angle due to small disturbance and ensure the synchronization stability of an electric power system against large disturbance so that stably transmittable power can be increased when a control system constant of the electric power system is set. SOLUTION: The setting method for control system constants is carried out as described below. An initial value of a control system constant is computed by an eigenvalue analysis (S2). A stability index is computed by a nonlinear analysis, and stability limit energy related to oscillatory divergence is computed using the stability index (S5). Using the control system constant and the stability limit energy, the sensitivity of stability limit energy to change in control system constant is computed. The control system constant is adjusted using the sensitivity of stability limit energy. It is determined whether or not the eigenvalue of the swing mode of the electric power system after the adjustment of control system constant is within an allowable range. It is determined whether or not the width of change in control system constant and the width of change in stability index between before and after the adjustment of control system constant meet a convergence condition. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了适当地产生由于干扰较小而衰减发电机相位差角度的波动的效果,并且确保电力系统的大扰动的同步稳定性,使得当a 设定电力系统的控制系统常数。

      解决方案:控制系统常数的设置方法如下所述进行。 通过特征值分析计算控制系统常数的初始值(S2)。 通过非线性分析计算稳定性指标,并使用稳定性指标计算与振荡发散相关的稳定极限能量(S5)。 使用控制系统常数和稳定极限能量,计算稳定限制能量对控制系统常数变化的灵敏度。 使用稳定极限能量的灵敏度调节控制系统常数。 确定控制系统调整后的电力系统的摆动模式的特征值是否在允许范围内。 确定控制系统的调整之前和之后控制系统的变化幅度是否恒定,稳定指标的变化幅度是否满足收敛条件。 版权所有(C)2008,JPO&INPIT

    • 7. 发明专利
    • Apparatus and method for controlling load frequency, and apparatus and method for calculating edc correction required amount
    • 用于控制负载频率的装置和方法,以及计算EDC校正所需量的装置和方法
    • JP2007306770A
    • 2007-11-22
    • JP2006135271
    • 2006-05-15
    • Central Res Inst Of Electric Power Ind財団法人電力中央研究所
    • INOUE TOSHIOAMANO HIROYUKI
    • H02P9/00H02J3/46
    • PROBLEM TO BE SOLVED: To effectively use large LFC generators with an output response delay. SOLUTION: The generators are classified into three groups based on an output response delay; three variation elements which the respective groups of generators can follow are extracted from an AR using LPF 10 1 -10 3 ; and respective factor multipliers generate variation elements to be distributed to the respective generators by multiplying the predetermined distribution factor to the respective groups of variation elements to constitute, so that respective PID control portions may output LFC commands of the respective generators by PID control. Besides, an EDC correction required amount calculator 40 calculates the EDC correction required amount by adding I control outputs of the respective PID controls. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:有效地使用具有输出响应延迟的大型LFC发生器。 解决方案:根据输出响应延迟将发电机分为三组: 使用LPF 10 -10 3从AR中提取各组发生器可以跟随的三个变化元件。 并且各个因子乘法器通过将预定分配因子乘以各组变化要素来生成要分配给各个发电机的变化元件,从而各个PID控制部分可以通过PID控制输出各个发电机的LFC命令。 此外,EDC校正要求量计算器40通过添加各PID控制的I控制输出来计算EDC校正所需量。 版权所有(C)2008,JPO&INPIT