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公开(公告)号：US11782077B2
公开(公告)日：2023-10-10
申请号：US16233745
申请日：2018-12-27
IPC分类号： G01R21/00 , G01R21/133 , G06F7/483 , G06F7/544 , H02J3/06
CPC分类号： G01R21/003 , G01R21/005 , G01R21/1331 , G06F7/483 , G06F7/544 , H02J3/06 , G06F2207/5355
摘要： Various embodiments are provided for conducting a power flow analysis using a set of line-wise power balance equations. In at least some embodiment, the set of line-wise power balance equations is solved using a Newton-Raphson technique. In various cases, the Jacobian matrix generated by the Newton-Raphson technique may directly indicate the transmission lines, or sets of transmission lines, which are most susceptible to voltage collapse. In at least one example application, the set of line-wise power balance equations may be used as equality constraints in an optimal power flow (OPF) formulation for solving an optimal power flow (OPF) problem.
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公开(公告)号：US08321163B2
公开(公告)日：2012-11-27
申请号：US12717879
申请日：2010-03-04
IPC分类号： G06F19/00
CPC分类号： G01R21/10 , G01R21/005 , G01R21/006 , G01R35/005 , G06F2200/261 , H01R25/006 , H02B1/011 , H04Q9/00 , H04Q2209/60 , H04Q2209/823 , H04Q2209/84
摘要： A power distribution unit (PDU) disposable in an electrical equipment rack. The PDU has a housing, a power input penetrating the housing, outlets in the housing, a processor disposed in the housing, voltage and current sensors, and a voltage calculation procedure communicable with the processor. The processor samples voltage and current waveforms and calculates RMS values and other power parameters. A method of managing electrical loads each drawing electrical power from a PDU includes repeatedly sampling voltage across and current flowing through each of the loads, calculating raw RMS values of voltage and current, and scaling the raw RMS values to obtain corrected RMS voltage and current values and other power parameters.
摘要翻译： 配电单元（PDU），一次性放置在电气设备机架中。 PDU具有壳体，穿过壳体的电力输入，壳体中的出口，设置在壳体中的处理器，电压和电流传感器以及可与处理器通信的电压计算过程。 处理器对电压和电流波形进行采样，并计算RMS值和其他功率参数。 管理来自PDU的电力负载的方法包括：重复地对跨过每个负载的采样电压和流过每个负载的电流，计算电压和电流的原始RMS值，以及缩放原始RMS值以获得校正的RMS电压和电流值 和其他功率参数。
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公开(公告)号：US09952261B2
公开(公告)日：2018-04-24
申请号：US14247900
申请日：2014-04-08
CPC分类号： G01R21/10 , G01R21/005 , G01R21/006 , G01R35/005 , G06F2200/261 , H01R25/006 , H02B1/011 , H04Q9/00 , H04Q2209/60 , H04Q2209/823 , H04Q2209/84
摘要： A power distribution unit (PDU) disposable in an electrical equipment rack. The PDU has a housing, a power input penetrating the housing, outlets in the housing, a processor disposed in the housing, voltage and current sensors, and a voltage calculation procedure communicable with the processor. The processor samples voltage and current waveforms and calculates RMS values and other power parameters. A method of managing electrical loads each drawing electrical power from a PDU includes repeatedly sampling voltage across and current flowing through each of the loads, calculating raw RMS values of voltage and current, and scaling the raw RMS values to obtain corrected RMS voltage and current values and other power parameters.
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公开(公告)号：US20180100882A1
公开(公告)日：2018-04-12
申请号：US15710621
申请日：2017-09-20
IPC分类号： G01R21/133 , G01R21/00
CPC分类号： G01R21/1331 , F24F11/30 , F24F11/46 , F24F2110/10 , F24F2110/50 , F25B49/025 , G01R21/005 , G01R21/1333
摘要： In an embodiment of the present disclosure, a method for determining power consumption of a unit of a heating, ventilating, and air conditioning (HVAC) system includes providing conditioned air to the unit from an HVAC unit of the HVAC system. The method also includes receiving power data indicative of a total power consumed by the HVAC unit, receiving airflow data indicative of a rate of the conditioned air received by the unit from the HVAC unit, determining a power consumption of the unit based on the power data and the airflow data, and outputting the power consumption of the unit.
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公开(公告)号：US20130090869A1
公开(公告)日：2013-04-11
申请号：US13686685
申请日：2012-11-27
IPC分类号： G01R21/00
CPC分类号： G01R21/10 , G01R21/005 , G01R21/006 , G01R35/005 , G06F2200/261 , H01R25/006 , H02B1/011 , H04Q9/00 , H04Q2209/60 , H04Q2209/823 , H04Q2209/84
摘要： A power distribution unit (PDU) disposable in an electrical equipment rack. The PDU has a housing, a power input penetrating the housing, outlets in the housing, a processor disposed in the housing, voltage and current sensors, and a voltage calculation procedure communicable with the processor. The processor samples voltage and current waveforms and calculates RMS values and other power parameters. A method of managing electrical loads each drawing electrical power from a PDU includes repeatedly sampling voltage across and current flowing through each of the loads, calculating raw RMS values of voltage and current, and scaling the raw RMS values to obtain corrected RMS voltage and current values and other power parameters.
摘要翻译： 配电单元（PDU），一次性放置在电气设备机架中。 PDU具有壳体，穿过壳体的电力输入，壳体中的出口，设置在壳体中的处理器，电压和电流传感器以及可与处理器通信的电压计算过程。 处理器对电压和电流波形进行采样，并计算RMS值和其他功率参数。 管理来自PDU的电力负载的方法包括：重复地对跨过每个负载的采样电压和流过每个负载的电流，计算电压和电流的原始RMS值，以及缩放原始RMS值以获得校正的RMS电压和电流值 和其他功率参数。
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公开(公告)号：US20110181109A1
公开(公告)日：2011-07-28
申请号：US12714879
申请日：2010-03-01
申请人： Heikki Huomo
发明人： Heikki Huomo
IPC分类号： H02J4/00
CPC分类号： G05F1/66 , G01R21/005 , H02J3/06 , Y10T307/391
摘要： Methods and systems for measuring and/or managing power consumption by power units connected to an electricity distribution network are disclosed. Power flow to and/or from a power unit connected to an electricity distribution network is controlled in accordance with a control sequence, such that the consumption and/or provision of power by the power unit results in a power flow having a predefined flow pattern, and having a characteristic, such as an amplitude, which can be remotely measured. This measurement may be performed using a method in which a signal indicative of power flowing at a measurement node is measured and correlated with a predefined pattern, and a characteristic of the correlated signal is measured. Thus, power flow characteristics resulting from a group of one or more power flow devices can be remotely detected and measured.
摘要翻译： 公开了用于测量和/或管理连接到配电网络的电力单元的功率消耗的方法和系统。 根据控制顺序来控制连接到配电网络的功率单元和/或从功率单元的功率流，使得功率单元的功率消耗和/或提供导致具有预定流量模式的功率流， 并且具有可被远程测量的诸如振幅的特性。 可以使用其中测量表示在测量节点处流动的功率的信号并与预定义模式相关联的方法来执行该测量，并且测量相关信号的特性。 因此，可以远程检测和测量由一组或多个功率流装置产生的功率流特性。
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公开(公告)号：US20100280774A1
公开(公告)日：2010-11-04
申请号：US12717879
申请日：2010-03-04
CPC分类号： G01R21/10 , G01R21/005 , G01R21/006 , G01R35/005 , G06F2200/261 , H01R25/006 , H02B1/011 , H04Q9/00 , H04Q2209/60 , H04Q2209/823 , H04Q2209/84
摘要： A power distribution unit (PDU) disposable in an electrical equipment rack. The PDU has a housing, a power input penetrating the housing, outlets in the housing, a processor disposed in the housing, voltage and current sensors, and a voltage calculation procedure communicable with the processor. The processor samples voltage and current waveforms and calculates RMS values and other power parameters. A method of managing electrical loads each drawing electrical power from a PDU includes repeatedly sampling voltage across and current flowing through each of the loads, calculating raw RMS values of voltage and current, and scaling the raw RMS values to obtain corrected RMS voltage and current values and other power parameters.
摘要翻译： 配电单元（PDU），一次性放置在电气设备机架中。 PDU具有壳体，穿过壳体的电力输入，壳体中的出口，设置在壳体中的处理器，电压和电流传感器以及可与处理器通信的电压计算过程。 处理器对电压和电流波形进行采样，并计算RMS值和其他功率参数。 管理来自PDU的电力负载的方法包括：重复地对跨过每个负载的采样电压和流过每个负载的电流，计算电压和电流的原始RMS值，以及缩放原始RMS值以获得校正的RMS电压和电流值 和其他功率参数。
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公开(公告)号：US5537028A
公开(公告)日：1996-07-16
申请号：US228630
申请日：1994-04-18
申请人： R. Wendell Goodwin
发明人： R. Wendell Goodwin
CPC分类号： G01R21/08 , G01R21/005
摘要： An electricity meter and method for measuring VA power consumption. The electricity meter comprises a transducer circuit receiving line current and line voltage and producing a first signal corresponding to active power on the line, and a level shifting circuit responsive to the first signal for producing a second signal corresponding to apparent power.
摘要翻译： 用于测量VA功率的电表和方法。 电度计包括接收线路电流和线路电压并产生对应于线路上的有功功率的第一信号的换能器电路，以及响应于第一信号的电平移位电路，用于产生对应于视在功率的第二信号。
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公开(公告)号：US09863986B2
公开(公告)日：2018-01-09
申请号：US15209630
申请日：2016-07-13
申请人： LSIS CO., LTD.
发明人： Hong-Seon Ahn
IPC分类号： G01R1/20 , G01R15/18 , G01R21/133 , G01R19/175 , G01R21/00
CPC分类号： G01R21/133 , G01R19/175 , G01R21/002 , G01R21/005
摘要： Embodiments of an electric power measuring system capable of computing accurate electric power information using a low voltage measuring instrument in a small-scale electric power system are provided. The electric power measuring system may include a first measuring instrument for measuring and detecting a current and a zero-cross point from a distribution line and for generating and outputting current information of the distribution line from the current and the zero-cross point, and a second measuring instrument for computing electric power information of the distribution line according to a voltage thereof and the current information output from the first measuring instrument.
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10.发明授权Power level identification circuit, power level flag circuit and power level supply system 有权功率电平识别电路，功率电平标志电路和电源供电系统公开(公告)号：US09176172B2
公开(公告)日：2015-11-03
申请号：US14011748
申请日：2013-08-27
发明人： Ming-Yu Liao
CPC分类号： G01R21/133 , G01R19/00 , G01R21/00 , G01R21/005 , G01R21/006 , G01R21/10 , G01R22/00 , G01R35/04
摘要： A power level identification circuit includes a power interface, a voltage conversion unit, a waveform detection unit, a signal pre-processing unit and a processing unit. The power interface receives electrical power and first signals indicating a level of the power. The voltage conversion unit receives the power from the power interface and converts the power. The waveform detection unit filters the power and obtains the first signals indicating power level. The signal pre-processing unit shapes the waveform of the first signals indicating power level and thereby generates second signals indicating power level. The processing unit identifies a level of the second signals indicating power level and switches to one of modes of the power level identification circuit corresponding to the identified level of the second signals indicating power level. A power level flag circuit and a power level supply system are also provided.
摘要翻译： 功率电平识别电路包括电源接口，电压转换单元，波形检测单元，信号预处理单元和处理单元。 电源接口接收电力和指示电源电平的第一信号。 电压转换单元从电源接口接收电力并转换电力。 波形检测单元对功率进行滤波并获得指示功率电平的第一信号。 信号预处理单元对表示功率电平的第一信号的波形进行整形，从而生成指示功率电平的第二信号。 处理单元识别指示功率电平的第二信号的电平，并切换到指示功率电平的所识别的第二信号电平对应的功率电平识别电路的模式之一。 还提供了功率电平标志电路和功率电平供应系统。
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