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公开(公告)号：US20080106098A1
公开(公告)日：2008-05-08
申请号：US11555987
申请日：2006-11-02
IPC分类号： H02P9/04
CPC分类号： H02J3/1871 , F03D9/25 , H02J3/386 , H02P21/22 , Y02E10/725 , Y02E10/763
摘要： A method for determining electric currents for an electrical machine includes generating a first real power current demand signal and a first reactive power current demand signal. The method also includes determining at least one of a second real power current demand signal and a second reactive power current demand signal by prioritizing a second real power current demand signal over a second reactive power current demand signal. Alternatively, the method also includes determining at least one of a second real power current demand signal and a second reactive power current demand signal by prioritizing the second reactive power current demand signal over the second real power current demand signal. The method further includes comparing at least one of the first real power current demand signal and first reactive power current demand signal to at least one electrical machine current limit signal.
摘要翻译： 一种用于确定电机的电流的方法包括产生第一有功功率电流需求信号和第一无功功率电流需求信号。 该方法还包括通过在第二无功功率电流需求信号上优先化第二有功功率电流需求信号来确定第二有功功率电流需求信号和第二无功功率电流需求信号中的至少一个。 或者，该方法还包括通过在第二有功功率电流需求信号上优先化第二无功功率电流需求信号来确定第二有功功率电流需求信号和第二无功功率电流需求信号中的至少一个。 该方法还包括将第一有功功率电流需求信号和第一无功功率电流需求信号中的至少一个与至少一个电机限流信号进行比较。
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公开(公告)号：US4868410A
公开(公告)日：1989-09-19
申请号：US237696
申请日：1988-08-26
申请人： Shizuka Nakamura
发明人： Shizuka Nakamura
IPC分类号： H02J3/18
CPC分类号： H02J3/1871 , Y10T307/32 , Y10T307/352 , Y10T307/422
摘要： In the load flow calculating method of the present invention, a Jacobian matrix for reactive power with respect to voltage is made to coincide with a part of a Jacobian matrix for effective power with respect to phase by introducing variables of the quotients of differences between effective power and reactive power flowing through each node and specified values divided by the square of voltage on each node, whereby the need for triangular factorization of the Jacobian matrix for reactive power with respect to voltage is eliminated, and, at the time of calculating a voltage correction amount, the voltage correction amount is compensated by the use of the product of a Jacobian matrix for reactive power with respect to phase and a vector of phase correction amount, and by virtue of the needlessness of triangular factorization of the Jacobian matrix for reactive power with respect to voltage and nonnecessity, at the time of calculating the voltage correction amount, for calculating discrepancy of reactive power newly flowing in through each node from a specified value, and so forth, a speed-up of the load flow calculating process becomes possible.
摘要翻译： 在本发明的负荷流量计算方法中，通过引入有效功率之间的差的商的变量，使相对于电压的无功功率的雅可比矩阵与用于有效功率的雅可比矩阵的一部分相对于相位相一致 流过每个节点的无功功率和指定值除以每个节点上的电压平方，从而消除了相对于电压的无功功率的雅可比矩阵的三角因子分解的需要，并且在计算电压校正时 通过使用相对于相位的无功功率的雅可比矩阵的乘积和相位校正量的向量来补偿电压校正量，并且由于无功功率的雅可比矩阵的三角因子分解的不必要性， 在计算电压校正量时，对电压和不必要性进行计算 通过每个节点从规定的值新流入的无功功率的平稳等等，负载流计算处理的加速成为可能。
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公开(公告)号：US4247786A
公开(公告)日：1981-01-27
申请号：US20810
申请日：1979-03-15
申请人： Walter P. Hedges
发明人： Walter P. Hedges
CPC分类号： H02J3/1871 , H02J3/14 , H02J3/18 , Y02B70/3225 , Y02E40/30 , Y04S20/222 , Y10T307/438 , Y10T307/469
摘要： An energy management method for controlling electrical power consumption in each of a plurality of residential circuits having a plurality of loads. Each residential circuit is provided with a variable limit demand controller which includes means for receiving utility-generated demand limit signals from a remote location. A demand limit is established for each of the residential circuits which is independent of which of the specific loads in the circuit are responsible for the demand. Signals are generated by the utility from a remote location to vary the limit proportionately in all of the residential circuits.In a preferred embodiment, in which the loads in each of the circuits include both resistive and reactive loads, each circuit is provided with separate variable limit demand controllers for the resistive loads and for the reactive loads. Separate demand limits are established for each of the residential circuits and utility-generated signals are sent from a remote location to each of the demand controllers to vary the resistive and reactive limits proportionately in all of the residential circuits. The resistive and reactive demand limits are adjustably varied to improve the power factor of the load on the utility power-generating facilities.
摘要翻译： 一种用于控制具有多个负载的多个住宅电路中的每一个中的电力消耗的能量管理方法。 每个住宅电路设置有可变限制需求控制器，其包括用于从远程位置接收公用事业生成的需求限制信号的装置。 为每个住宅电路建立了一个需求限制，独立于电路中的哪一个特定负载负责该需求。 信号由实用程序从远程位置生成，以在所有住宅电路中成比例地改变极限。 在其中每个电路中的负载包括电阻负载和无功负载的优选实施例中，每个电路为电阻负载和无功负载提供单独的可变限制需求控制器。 为每个住宅电路建立单独的需求限制，并且将公用事业信号从远程位置发送到每个需求控制器，以在所有住宅电路中成比例地改变电阻和无功极限。 电阻和无功电力需求限制可以变化，以提高公用事业发电设施的负载功率因数。
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4.发明申请METHOD OF INSTALLING A CAPACITOR TO A SERVICE ENTRANCE PANEL TO REDUCE KW CONSUMPTION 审中-公开将电容器安装到服务输入面板以降低KW消耗的方法公开(公告)号：US20110203103A1
公开(公告)日：2011-08-25
申请号：US13035911
申请日：2011-02-25
申请人： Steven Bruce Fish
发明人： Steven Bruce Fish
IPC分类号： H05K13/00
CPC分类号： H02J3/1871 , H02J3/1821 , Y02E40/30 , Y10T29/49002
摘要： A method for installing a power factor correcting circuit to be applied at the electric service panel of a facility is disclosed which is comprised of a series of measurements under controlled load conditions, and a series of installation steps. The method of the invention is comprised of power factor measurements taken under minimum load conditions, single reactive load conditions, and full load conditions. The method of the invention applies to single and poly-phase electrical systems.
摘要翻译： 公开了一种在设备的电气维护面板上安装应用于功率因数校正电路的方法，其包括在受控负载条件下的一系列测量以及一系列安装步骤。 本发明的方法包括在最小负载条件，单个无功负载条件和满载条件下进行的功率因数测量。 本发明的方法适用于单相和多相电气系统。
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公开(公告)号：US07622826B2
公开(公告)日：2009-11-24
申请号：US12121383
申请日：2008-05-15
申请人： Akihiro Matsuda
发明人： Akihiro Matsuda
CPC分类号： H02J3/1871
摘要： A flicker improvement effect evaluating system evaluates an effect of improvement of voltage flicker in a power system to which a static reactive power compensator is to be introduced. A system voltage operating unit operates a compensation current and a system impedance of the power system, based on actually measured data of system voltage and load current read from a data reading unit. Based on the results of operations and the actually measured data, a not-yet-improved system voltage at present and an improved system voltage attained when the static reactive power compensator is provided on a bus are simulated. By a flicker meter, flicker values of the not-yet-improved system voltage and improved system voltage amplified by an amplifying circuit are measured, and from the flicker values, the rate of improvement attained by the static reactive power compensator is operated.
摘要翻译： 闪烁改善效果评估系统评估要引入静态无功功率补偿器的电力系统中的电压闪烁改善的效果。 系统电压操作单元基于从数据读取单元读取的系统电压和负载电流的实际测量数据来操作电力系统的补偿电流和系统阻抗。 基于操作结果和实际测量数据，模拟了当总线上提供静态无功功率补偿器时，目前还没有改进的系统电压和改善的系统电压。 通过闪烁计测量，测量尚未改善的系统电压和由放大电路放大的改进的系统电压的闪烁值，并且根据闪烁值操作由静态无功功率补偿器获得的改进率。
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公开(公告)号：US07002321B2
公开(公告)日：2006-02-21
申请号：US10789253
申请日：2004-02-27
IPC分类号： G05F1/70
CPC分类号： G05F1/70 , H02J3/1828 , H02J3/1871 , Y02E40/30
摘要： An automatic power factor correction system, for an electrical power installation drawing varying levels of reactive power, measures an electrical parameter of the power drawn by a load of a power installation using a power measurement integrated circuit, the parameter being capable of indicating a level of reactive power drawn by the load, and couples a combination of capacitors to the power line to compensate for the level of reactive power indicated by the electrical parameter measured. In a first embodiment of the invention, the combination of power factor compensating capacitors is calculated from a signed value of reactive power drawn by the load. In a second embodiment, the compensating capacitor combination is calculated from a value of power factor for the load which is calculated from a ratio of an active power value to an apparent power value.
摘要翻译： 一种自动功率因数校正系统，用于绘制不同级别的无功功率的电力设备，测量由功率测量集成电路的电力设备的负载所牵引的功率的电参数，该参数能够指示 由负载引起的无功功率，并将电容器的组合耦合到电力线，以补偿由所测量的电参数指示的无功功率电平。 在本发明的第一实施例中，功率因数补偿电容器的组合由负载所绘制的无功功率的有符号值计算。 在第二实施例中，补偿电容器组合是根据从有效功率值与视在功率值的比值计算的负载的功率因数的值来计算的。
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公开(公告)号：US20020180408A1
公开(公告)日：2002-12-05
申请号：US10162406
申请日：2002-06-04
IPC分类号： G05F001/70
CPC分类号： G05F1/70 , H02J3/1828 , H02J3/1871 , Y02E40/30
摘要： An automatic power factor correction system, for an electrical power installation drawing varying levels of reactive power, measures an electrical parameter of the power drawn by a load of a power installation which is capable of indicating a level of reactive power drawn by the load and couples a combination of capacitors to the power line to compensate for the level of reactive power indicated by the electrical parameter measured. In particular, the system measures the phase angle of the power drawn and calculates a combination of capacitors to connect to the power line to compensate for a measured level of reactive power.
摘要翻译： 一种自动功率因数校正系统，用于绘制不同级别的无功功率的电力设备，测量由能够指示由负载和耦合引起的无功功率水平的电力设备的负载所牵引的电力的电参数 将电容器组合到电力线，以补偿由所测量的电参数指示的无功功率电平。 特别地，该系统测量所耗电的相位角，并且计算电容器的组合以连接到电力线以补偿测量的无功功率水平。
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公开(公告)号：US20180083447A1
公开(公告)日：2018-03-22
申请号：US15684808
申请日：2017-08-23
申请人： LSIS CO., LTD.
发明人： Eun Jae LEE
CPC分类号： H02J3/1871 , G05F1/70 , H02J3/18 , H02J3/1814 , H02J3/1842 , H02J3/1892 , H02J3/20 , H02J15/00 , H02M1/4208
摘要： A power compensation apparatus compensates for power of a power system to be allowed to transmit from at least one or more power sources to a load. The power compensation apparatus includes a first system connected to the power system to compensate for active power and reactive power of the power system, a second system connected to the first system to store power necessary for compensating for active power and reactive power, and a third system connected to the second system to generate the power to be stored in the second system.
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公开(公告)号：US20090184694A1
公开(公告)日：2009-07-23
申请号：US12121383
申请日：2008-05-15
申请人： Akihiro MATSUDA
发明人： Akihiro MATSUDA
IPC分类号： G05F1/70
CPC分类号： H02J3/1871
摘要： A flicker improvement effect evaluating system evaluates an effect of improvement of voltage flicker in a power system to which a static reactive power compensator is to be introduced. A system voltage operating unit operates a compensation current and a system impedance of the power system, based on actually measured data of system voltage and load current read from a data reading unit. Based on the results of operations and the actually measured data, a not-yet-improved system voltage at present and an improved system voltage attained when the static reactive power compensator is provided on a bus are simulated. By a flicker meter, flicker values of the not-yet-improved system voltage and improved system voltage amplified by an amplifying circuit are measured, and from the flicker values, the rate of improvement attained by the static reactive power compensator is operated.
摘要翻译： 闪烁改善效果评估系统评估要引入静态无功功率补偿器的电力系统中电压闪烁的改善效果。 基于从数据读取单元读取的系统电压和负载电流的实际测量数据，系统电压操作单元操作电力系统的补偿电流和系统阻抗。 基于操作结果和实际测量数据，模拟了在总线上提供静态无功功率补偿器时，目前还没有改进的系统电压和提高的系统电压。 通过闪烁计测量，测量尚未改善的系统电压和由放大电路放大的改进的系统电压的闪烁值，并且从闪烁值开始，静态无功功率补偿器的改进率得以实现。
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10.发明申请公开(公告)号：US20060229767A1
公开(公告)日：2006-10-12
申请号：US11240582
申请日：2005-09-30
申请人： Chia-Chi Chu , Sheng-Huei Lee , Hung-Chi Tsai
发明人： Chia-Chi Chu , Sheng-Huei Lee , Hung-Chi Tsai
IPC分类号： H02J3/00
CPC分类号： H02J3/1814 , H02J3/00 , H02J3/1871 , H02J2003/007 , Y02E40/18 , Y02E60/76 , Y04S40/22
摘要： A method for calculating power flow solution of a power transmission network with unified power flow controllers is adapted to calculate the power flow on a large-scale power transmission network. The unified power flow controller has a series transformer, a series converter, a direct current coupling capacitor, a shunt converter, and a series transformer. The shunt transformer is connected electrically to a sending-end bus. The series transformer is connected electrically to the sending-end bus and a receiving-end bus. The unified power flow controller is represented by equivalent active and reactive loads on the sending-end and receiving-end buses of the power transmission network.
摘要翻译： 用于计算具有统一功率流量控制器的输电网络的功率流解决方案的方法适于计算大型输电网络上的功率流。 统一功率流量控制器具有串联变压器，串联转换器，直流耦合电容器，并联转换器和串联变压器。 并联变压器与发送端总线电连接。 串联变压器与发送端总线和接收端总线电连接。 统一功率流量控制器由输电网络的发送端和接收端总线上的等效有功和无功负载表示。
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