公开(公告)号：US10025336B2

公开(公告)日：2018-07-17

申请号：US14055667

申请日：2013-10-16

Applicant: General Electric Company

Inventor： Chaitanya Ashok Baone ,  Nilanjan Ray Chaudhuri ,  Naresh Acharya

IPC: G05F1/66 ,  H02J3/24 ,  H02J3/00

Abstract: A computer-based method for contingency analysis of oscillatory stability in an electrical power transmission system is provided. The method uses at least one processor. The method includes receiving, by the at least one processor, a plurality of component inputs from a plurality of system components within the electrical power transmission system. The method also includes generating a nominal matrix for the electrical power transmission system. The nominal matrix includes a set of equations at least partially modeling the electrical power transmission system. The method further includes calculating eigenvalues and eigenvectors of the nominal matrix. The method also includes identifying a contingency representing a postulated disturbance of the electrical power transmission system. The method further includes estimating a contingency eigenvalue for the contingency using the eigenvalues and eigenvectors of the nominal matrix.

公开(公告)号：US09602021B2

公开(公告)日：2017-03-21

申请号：US14201062

申请日：2014-03-07

Applicant: General Electric Company

Inventor： Nilanjan Ray Chaudhuri ,  Ranjan Kumar Gupta ,  Einar Vaughn Larsen

IPC: H02J3/36 ,  H02M5/458 ,  H02M7/757

CPC classification number: H02M5/4585 ,  H02J3/36 ,  H02M7/7575 ,  Y02E60/60

Abstract: A hybrid HVDC converter system includes a DC bus, at least one capacitor commutated converter (CCC) and at least one self-commutated converter (SCC) coupled in series through the DC bus. The CCC induces a first voltage on the DC buses, the SCC induces a second voltage on the DC bus, the first voltage and the second voltage are summed to define a total DC voltage. The method includes at least one of regulating the total DC voltage induced on the DC buses including regulating the first DC voltage through the CCC and regulating the second DC voltage through the SCC substantially simultaneously, regulating the total DC voltage induced on the DC bus including regulating the second DC voltage through the SCC, and regulating the total DC voltage induced on the DC bus including regulating the first DC voltage through the CCC.

公开(公告)号：US20140354062A1

公开(公告)日：2014-12-04

申请号：US13905415

申请日：2013-05-30

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Nilanjan Ray Chaudhuri

IPC: H02J3/24

CPC classification number: H02J3/24 ,  G05B13/021

Abstract: A system for damping power system oscillation includes a damping device controller for generating a damping control signal to compensate for a plurality of oscillation modes in the power system oscillations and a damping device to generate a damping signal based on a damping control signal. The damping device controller includes a plurality of outer closed loop paths each including an adaptive controller configured to determine an individual oscillation mode from at least one power system measurement signal. Each adaptive controller is further configured to generate an adaptive control signal to shift at least one open loop pole of an inner loop path related to the individual oscillation mode to a closed loop location.

Abstract translation: 一种用于阻尼电力系统振荡的系统包括：阻尼装置控制器，用于产生阻尼控制信号以补偿电力系统振荡中的多个振荡模式;以及阻尼装置，用于基于阻尼控制信号产生阻尼信号。 阻尼装置控制器包括多个外部闭环路径，每个外部闭环路径包括配置成从至少一个电力系统测量信号确定单个振荡模式的自适应控制器。 每个自适应控制器还被配置为产生自适应控制信号，以将与各个振荡模式相关的内环路径的至少一个开环极点移位到闭环位置。

公开(公告)号：US09909940B2

公开(公告)日：2018-03-06

申请号：US14697284

申请日：2015-04-27

Applicant: General Electric Company

Inventor： Naresh Acharya ,  Nilanjan Ray Chaudhuri ,  Chaitanya Ashok Baone

IPC: G01L3/00 ,  H02J3/24 ,  H02P9/10 ,  H02J3/00

CPC classification number: G01L3/00 ,  H02J3/24 ,  H02J2003/007 ,  H02P9/105 ,  Y02E60/728 ,  Y02E60/76 ,  Y04S10/265 ,  Y04S40/22

Abstract: A stability analysis system (SAS) for non-invasive estimation of damping torque associated with a power generator in an electric power network includes a processor in communication with a PMU associated with the generator. The processor is configured to receive a first data sample set from the PMU. The first data set is substantially representative of at least one measurement of the generator. The processor is also configured to determine an estimated torque of the generator based at least in part on the first data set. The processor is further configured to determine an estimated average torque and one or more estimated torque components based at least in part on the estimated torque. The processor is also configured to output the estimated average torque and the one or more estimated torque components to an operator for use in stability analysis of one or more of the generator and the network.

公开(公告)号：US20160315471A1

公开(公告)日：2016-10-27

申请号：US14693590

申请日：2015-04-22

Applicant: General Electric Company

Inventor： Chaitanya Ashok Baone ,  Naresh Acharya ,  Nilanjan Ray Chaudhuri

IPC: H02J3/10 ,  G05B15/02

CPC classification number: H02J3/10 ,  G05B15/02 ,  H02J3/24

Abstract: The embodiments described herein provide for a system including a processor. The processor is configured to select at least one grid system contingency from a plurality of grid system contingencies. The processor is further configured to derive one or more eigen-sensitivity values based on the at least on grid system contingency. The processor is also configured to derive one or more control actions at least partially based on the eigen-sensitivity values. The processor is additionally configured to apply the one or more control actions for generation re-dispatch of a grid system.

Abstract translation: 这里描述的实施例提供了一种包括处理器的系统。 处理器被配置为从多个网格系统意外事件中选择至少一个网格系统意外事件。 所述处理器还被配置为基于所述至少一个网格系统意外事件来导出一个或多个特征敏感度值。 处理器还被配置为至少部分地基于特征敏感度值来导出一个或多个控制动作。 处理器另外配置为应用用于网格系统的生成重新分派的一个或多个控制动作。

公开(公告)号：US20140265583A1

公开(公告)日：2014-09-18

申请号：US13842844

申请日：2013-03-15

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Nilanjan Ray Chaudhuri ,  Ranjan Kumar Gupta ,  Rajib Datta ,  Ravisekhar Nadimpalli Raju

IPC: H02J1/00

CPC classification number: H02J1/00 ,  H02J3/36 ,  H02J3/386 ,  H02J13/0086 ,  Y02E10/763 ,  Y02E40/72 ,  Y02E60/60 ,  Y04S10/123 ,  Y10T307/549

Abstract: A direct current (DC) transmission and distribution (T&D) system includes a plurality of DC-to-DC converter devices defining a plurality of isolatable portions of the DC T&D system. The DC T&D system also includes a DC T&D control system coupled to the DC-to-DC converter devices. The DC T&D control system includes a plurality of current sensors. At least one of the current sensors is positioned at one of the DC-to-DC converter devices. The current sensor is configured to transmit signals representative of a value of DC electric current transmission through the DC-to-DC converter device. The DC T&D control system also includes a plurality of processors. At least one processor is coupled to the current sensor and the DC-to-DC converter device. The processor is configured to regulate DC current transmission through the DC-to-DC converter device as a function of the value of DC current transmission through the DC-to-DC converter device.

Abstract translation: 直流（DC）传输和分配（T＆D）系统包括限定DC T＆D系统的多个可隔离部分的多个DC-DC转换器装置。 DC T＆D系统还包括耦合到DC-DC转换器设备的DC T＆D控制系统。 DC T＆D控制系统包括多个电流传感器。 至少一个电流传感器位于DC-DC转换器装置之一处。 电流传感器被配置为传送表示通过DC-DC转换器装置的DC电流传输的值的信号。 DC T＆D控制系统还包括多个处理器。 至少一个处理器耦合到电流传感器和DC-DC转换器装置。 处理器被配置为根据通过DC-DC转换器装置的DC电流传输的值来调节通过DC-DC转换器装置的DC电流传输。

公开(公告)号：US20140146582A1

公开(公告)日：2014-05-29

申请号：US13688658

申请日：2012-11-29

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Ranjan Kumar Gupta ,  Nilanjan Ray Chaudhuri

IPC: H02J3/36

CPC classification number: H02J3/36 ,  H02M7/7575 ,  Y02E60/60

Abstract: A high voltage direct current (HVDC) converter system includes at least one line commutated converter (LCC) and at least one current controlled converter (CCC). The at least one LCC and the at least one CCC are coupled in parallel to at least one alternating current (AC) conduit and are coupled in series to at least one direct current (DC) conduit. The at least one LCC is configured to convert a plurality of AC voltages and currents to a regulated DC voltage of one of positive and negative polarity and a DC current transmitted in only one direction. The at least one current controlled converter (CCC) is configured to convert a plurality of AC voltages and currents to a regulated DC voltage of one of positive and negative polarity and a DC current transmitted in one of two directions.

Abstract translation: 高压直流（HVDC）转换器系统包括至少一个线路换向转换器（LCC）和至少一个电流控制转换器（CCC）。 所述至少一个LCC和所述至少一个CCC并联耦合到至少一个交流（AC）导管并且串联耦合到至少一个直流（DC）导管。 至少一个LCC被配置为将多个AC电压和电流转换成正极性和负极性之一的稳压DC电压以及仅在一个方向上传输的DC电流。 所述至少一个电流控制转换器（CCC）被配置为将多个AC电压和电流转换成正极性和负极性之一的稳压DC电压以及沿两个方向之一传输的DC电流。

公开(公告)号：US20160313197A1

公开(公告)日：2016-10-27

申请号：US14697284

申请日：2015-04-27

Applicant: General Electric Company

Inventor： Naresh Acharya ,  Nilanjan Ray Chaudhuri ,  Chaitanya Ashok Baone

IPC: G01L3/00

CPC classification number: G01L3/00 ,  H02J3/24 ,  H02J2003/007 ,  H02P9/105 ,  Y02E60/728 ,  Y02E60/76 ,  Y04S10/265 ,  Y04S40/22

Abstract: A stability analysis system (SAS) for non-invasive estimation of damping torque associated with a power generator in an electric power network includes a processor in communication with a PMU associated with the generator. The processor is configured to receive a first data sample set from the PMU. The first data set is substantially representative of at least one measurement of the generator. The processor is also configured to determine an estimated torque of the generator based at least in part on the first data set. The processor is further configured to determine an estimated average torque and one or more estimated torque components based at least in part on the estimated torque. The processor is also configured to output the estimated average torque and the one or more estimated torque components to an operator for use in stability analysis of one or more of the generator and the network.

Abstract translation: 用于非侵入式估计与电力网络中的发电机相关联的阻尼扭矩的稳定性分析系统（SAS）包括与与所述发电机相关联的PMU通信的处理器。 处理器被配置为从PMU接收第一数据样本集。 第一数据集基本上代表发电机的至少一个测量。 处理器还被配置成至少部分地基于第一数据集来确定发电机的估计转矩。 处理器还被配置为至少部分地基于估计的扭矩来确定估计的平均扭矩和一个或多个估计的扭矩分量。 处理器还被配置为将估计的平均扭矩和一个或多个估计的扭矩分量输出到操作者以用于发电机和网络中的一个或多个的稳定性分析。

公开(公告)号：US09099936B2

公开(公告)日：2015-08-04

申请号：US13826583

申请日：2013-03-14

Applicant: General Electric Company

Inventor： Ranjan Kumar Gupta ,  Nilanjan Ray Chaudhuri ,  Luis Jose Garces ,  Rajib Datta

IPC: H02M5/44 ,  H02M1/12 ,  H02M1/15 ,  H02M7/757 ,  H02M1/00

CPC classification number: H02M5/44 ,  H02M1/126 ,  H02M1/15 ,  H02M7/7575 ,  H02M2001/0077 ,  Y02E60/60

Abstract: A high voltage direct current (HVDC) converter system includes a line commutated converter (LCC) configured to convert a plurality of AC voltages and currents to a regulated DC voltage of one of positive and negative polarity and a DC current transmitted in only one direction. The HVDC converter system also includes a buck converter configured to convert a plurality of AC voltages and currents to a regulated DC voltage of one of positive and negative polarity and a DC current transmitted in one of two directions. The LCC and the buck converter are coupled in parallel to an AC conduit and are coupled in series to a DC conduit. The HVDC converter system further includes a filtering device coupled in parallel to the buck converter through the AC conduit. The filtering device is configured to inject AC current having at least one harmonic frequency into the AC conduit.

Abstract translation: 高压直流（HVDC）转换器系统包括线路整流转换器（LCC），其被配置为将多个AC电压和电流转换成正极性和负极性之一的稳压DC电压以及仅在一个方向上传输的DC电流。 HVDC转换器系统还包括降压转换器，其被配置为将多个AC电压和电流转换成正极性和负极性之一的稳压DC电压以及沿两个方向之一传输的DC电流。 LCC和降压转换器并联耦合到AC导管并且串联耦合到DC导管。 HVDC转换器系统还包括通过AC导管并联耦合到降压转换器的滤波装置。 滤波装置被配置为将具有至少一个谐波频率的AC电流注入到AC导管中。

公开(公告)号：US20150121160A1

公开(公告)日：2015-04-30

申请号：US14062720

申请日：2013-10-24

Applicant: General Electric Company

Inventor： Chaitanya Ashok Baone ,  Nilanjan Ray Chaudhuri

IPC: G06F11/14

CPC classification number: G06F11/1415 ,  G01D3/028 ,  G01D3/032 ,  G06Q50/06 ,  H02J2003/007 ,  Y02E60/76 ,  Y04S40/22

Abstract: In one aspect, a computer system for managing occurrences of data anomalies in a data stream is provided. The computer system includes a processor in communication with the data stream. The processor is programmed to receive a first data stream from a phasor measurement unit. The processor is also programmed to calculate at least one singular value associated with the first data stream. The processor is further programmed to detect a first data anomaly within the first data stream using the at least one singular value. The first data anomaly occurs during a first time segment. The processor is also programmed to indicate the first time segment as containing the first data anomaly.

Abstract translation: 一方面，提供了一种用于管理数据流中的数据异常的计算机系统。 计算机系统包括与数据流通信的处理器。 处理器被编程为从相量测量单元接收第一数据流。 处理器还被编程为计算与第一数据流相关联的至少一个奇异值。 处理器进一步被编程为使用至少一个奇异值来检测第一数据流内的第一数据异常。 第一个数据异常发生在第一个时间段。 处理器也被编程为将第一时间段指示为包含第一数据异常。