公开(公告)号：US20180048157A1

公开(公告)日：2018-02-15

申请号：US15236574

申请日：2016-08-15

Applicant: General Electric Company

Inventor： Amol Rajaram Kolwalkar ,  Somakumar Ramachandrapanicker ,  Arvind Kumar Tiwari ,  Subbarao Tatikonda

IPC: H02J3/38 ,  H02J7/35 ,  H02P9/00

CPC classification number: H02J3/381 ,  H02J3/383 ,  H02J3/386 ,  H02J7/35 ,  H02P9/007 ,  H02P2207/073 ,  Y02E10/563 ,  Y02E10/566 ,  Y02E10/763

Abstract: A power generation system is disclosed. The power generation system includes a doubly-fed induction generator (DFIG) coupled to a variable speed engine and a photo-voltaic (PV) power source. The DFIG includes a generator to generate a first electrical power based at least partially on an operating speed of the variable speed engine. The PV power source may supply a second electrical power to a Direct Current (DC) link between a rotor side converter and a line side converter of the DFIG. The generator and the line side converter are coupled to an electric grid and/or a local electrical load to supply the first electrical power and at least a portion of the second electrical power to the local electrical load.

公开(公告)号：US20150331079A1

公开(公告)日：2015-11-19

申请号：US14276253

申请日：2014-05-13

Applicant: General Electric Company

Inventor： Amol Rajaram Kolwalkar ,  Sameer Dinkar Vartak ,  Arun Kumar Raghunathan ,  Abhijeet Arvind Kulkarni ,  Charles Brendan O'Sullivan

IPC: G01R35/00 ,  G01R19/25

CPC classification number: G01R35/005 ,  G01R15/144 ,  G01R19/2503

Abstract: A calibration method for enhancing a measurement accuracy of one or more voltage sensing devices in presence of a plurality of conductors is provided. The method includes operatively coupling at least one voltage sensing device of the one or more voltage sensing devices to a respective conductor of the plurality of conductors and determining a sensed voltage value of the respective conductor using the at least one voltage sensing device The method further includes determining a calibration matrix having cross-coupling factors representative of cross-coupling between an antenna of the at least one voltage sensing device and other conductors of the plurality of conductors and determining a corrected voltage value of the respective conductor by deducting at least in part contributions of the cross-coupling from the sensed voltage value of the respective conductor using the calibration matrix.

Abstract translation: 提供了一种用于在存在多个导体的情况下增强一个或多个电压感测装置的测量精度的校准方法。 所述方法包括将所述一个或多个电压感测装置的至少一个电压感测装置可操作地耦合到所述多个导体中的相应导体，并使用所述至少一个电压感测装置确定所述相应导体的感测电压值。所述方法还包括 确定具有代表所述至少一个电压感测装置的天线与所述多个导体的其它导体之间的交叉耦合的交叉耦合因子的校准矩阵，并且通过至少部分地贡献来确定相应导体的校正电压值 使用校准矩阵从相应导体的感测电压值进行交叉耦合。

公开(公告)号：US09678115B2

公开(公告)日：2017-06-13

申请号：US14276175

申请日：2014-05-13

Applicant: General Electric Company

Inventor： Arun Kumar Raghunathan ,  Amol Rajaram Kolwalkar ,  Sameer Dinkar Vartak ,  Abhijeet Arvind Kulkarni ,  Charles Brendan O'Sullivan

IPC: G01R21/00 ,  G01R19/00 ,  G01R15/06 ,  G01R15/16

CPC classification number: G01R19/0084 ,  G01R15/06 ,  G01R15/16

Abstract: A contactless voltage sensing device configured to measure a voltage value of a conductor is provided. The contactless voltage sensing device includes a first impedance element having a first impedance, where the first impedance element is configured to be operatively coupled to the conductor. Further, the contactless voltage sensing device includes an antenna operatively coupled to the first impedance element, a second impedance element having a second impedance, where the second impedance element is formed in part by the antenna and a parasitic impedance element, and where the parasitic impedance element includes a parasitic impedance, and measurement and communication circuitry coupled to the first impedance element to measure the voltage value of the conductor.

公开(公告)号：US20130234680A1

公开(公告)日：2013-09-12

申请号：US13791704

申请日：2013-03-08

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Amol Rajaram Kolwalkar ,  Rajni Kant Burra ,  Gurunath Gurrala

IPC: H02P9/10

CPC classification number: H02P9/105 ,  H02J3/24 ,  Y02E60/728 ,  Y04S10/265

Abstract: A method for damping power oscillation in a power system includes generating synchronized generator speed signals by time stamping a plurality of generator speed signals. The synchronized speed signals are transmitted to a control station for determining power oscillations in the power system. The control station provides damping control signals to a plurality of damping devices based on power oscillations in the power system.

Abstract translation: 一种用于阻尼电力系统中的功率振荡的方法包括通过对多个发电机速度信号进行时间戳来产生同步的发电机速度信号。 同步的速度信号被发送到控制站以确定电力系统中的功率振荡。 控制站基于电力系统中的功率振荡向多个阻尼装置提供阻尼控制信号。

公开(公告)号：US10079485B2

公开(公告)日：2018-09-18

申请号：US14918950

申请日：2015-10-21

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Amol Rajaram Kolwalkar ,  Arvind Kumar Tiwari ,  Rajendra Naik ,  Sanjay Vijayaraghavan

IPC: H02J9/00 ,  H01F1/00 ,  H01F3/00 ,  H02J3/30 ,  H02H7/06 ,  H02K7/18 ,  H02J11/00 ,  H02J3/00 ,  H02P9/00 ,  H02J3/18 ,  H02J3/32

CPC classification number: H02H7/067 ,  H02J3/00 ,  H02J3/18 ,  H02J3/32 ,  H02J11/00 ,  H02J2003/001 ,  H02K7/1823 ,  H02P9/006 ,  Y02E40/30

Abstract: A power generation system is provided. The system includes a prime mover for transforming a first energy to a second energy. The system also includes an induction generator operatively coupled to the prime mover and configured to generate electrical power using the second energy. The system further includes an inverter electrically coupled to the induction generator for controlling a terminal voltage of the induction generator during a grid-loss condition. The system also includes a power dissipating device operatively coupled to the inverter for dissipating power generated by the induction generator during the grid-loss condition.

公开(公告)号：US09759798B2

公开(公告)日：2017-09-12

申请号：US14276253

申请日：2014-05-13

Applicant: General Electric Company

Inventor： Amol Rajaram Kolwalkar ,  Sameer Dinkar Vartak ,  Arun Kumar Raghunathan ,  Abhijeet Arvind Kulkarni ,  Charles Brendan O'Sullivan

IPC: G01R35/00 ,  G01R19/25 ,  G01R15/14

CPC classification number: G01R35/005 ,  G01R15/144 ,  G01R19/2503

Abstract: A calibration method for enhancing a measurement accuracy of one or more voltage sensing devices in presence of a plurality of conductors is provided. The method includes operatively coupling at least one voltage sensing device of the one or more voltage sensing devices to a respective conductor of the plurality of conductors and determining a sensed voltage value of the respective conductor using the at least one voltage sensing device The method further includes determining a calibration matrix having cross-coupling factors representative of cross-coupling between an antenna of the at least one voltage sensing device and other conductors of the plurality of conductors and determining a corrected voltage value of the respective conductor by deducting at least in part contributions of the cross-coupling from the sensed voltage value of the respective conductor using the calibration matrix.

公开(公告)号：US20150331017A1

公开(公告)日：2015-11-19

申请号：US14276175

申请日：2014-05-13

Applicant: General Electric Company

Inventor： Arun Kumar Raghunathan ,  Amol Rajaram Kolwalkar ,  Sameer Dinkar Vartak ,  Abhijeet Arvind Kulkarni ,  Charles Brendan O'Sullivan

IPC: G01R19/00 ,  G01R21/00 ,  G01R31/302

CPC classification number: G01R19/0084 ,  G01R15/06 ,  G01R15/16

Abstract: A contactless voltage sensing device configured to measure a voltage value of a conductor is provided. The contactless voltage sensing device includes a first impedance element having a first impedance, where the first impedance element is configured to be operatively coupled to the conductor. Further, the contactless voltage sensing device includes an antenna operatively coupled to the first impedance element, a second impedance element having a second impedance, where the second impedance element is formed in part by the antenna and a parasitic impedance element, and where the parasitic impedance element includes a parasitic impedance, and measurement and communication circuitry coupled to the first impedance element to measure the voltage value of the conductor.

Abstract translation: 提供了一种被配置为测量导体的电压值的非接触式电压感测装置。 非接触式电压感测装置包括具有第一阻抗的第一阻抗元件，其中第一阻抗元件被配置为可操作地耦合到导体。 此外，非接触电压感测装置包括可操作地耦合到第一阻抗元件的天线，具有第二阻抗的第二阻抗元件，其中第二阻抗元件部分地由天线和寄生阻抗元件形成，并且其中寄生阻抗 元件包括寄生阻抗，以及耦合到第一阻抗元件的测量和通信电路，以测量导体的电压值。

公开(公告)号：US20150168465A1

公开(公告)日：2015-06-18

申请号：US14105769

申请日：2013-12-13

Applicant: General Electric Company

Inventor： Kasi Viswanadha Raju Gadiraju ,  Amol Rajaram Kolwalkar ,  Mallikarjuna R. Vallem

IPC: G01R21/133 ,  G01R21/00

CPC classification number: G01R21/1331 ,  G01R21/002 ,  G01R21/003 ,  H02J3/06 ,  H02J13/0006 ,  H02J2003/007 ,  Y02E60/76 ,  Y04S40/22

Abstract: A method of estimating a state of an electric power distribution system that includes a plurality of nodes and at least one electrical monitoring sensor includes measuring electric current flow (I), real power flow (P), and reactive power flow (Q). The method also includes determining estimated real power load values (PLis) and reactive power load values (QLis) and determining a plurality of estimated load current values (ILis) based on the PLis and the QLis. The method further includes measuring a value of voltage (VM) for at least one node and determining a voltage estimate (Vi) for the node. The method also includes comparing the Vi with the VM, thereby determining a difference value between the Vi and the VM. The method further includes determining that the difference value exceeds a threshold and adjusting the PLis and the QLis to match the Vi and the VM.

Abstract translation: 一种估计包括多个节点和至少一个电监测传感器的配电系统的状态的方法包括测量电流（I），实际功率流（P）和无功功率流（Q）。 该方法还包括确定估计的有功功率负载值（PLis）和无功功率负载值（QLis），并且基于PLis和QLis确定多个估计负载电流值（ILis）。 该方法还包括测量至少一个节点的电压值（VM），并确定该节点的电压估计值（Vi）。 该方法还包括将Vi与VM进行比较，由此确定Vi和VM之间的差值。 所述方法还包括确定所述差值超过阈值并调整所述PL和所述QLis以匹配所述Vi和所述VM。