公开(公告)号：US10436823B2

公开(公告)日：2019-10-08

申请号：US14519526

申请日：2014-10-21

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Yan Pan ,  William James Premerlani

IPC: G01R21/133 ,  G01R25/00 ,  H02J3/24

Abstract: A method includes obtaining a voltage phasor, a current phasor and a mechanical rotor angle of a source end generator. A receiving end generator impedance and a line impedance between the source end generator and a receiving end generator is also estimated. Furthermore, a swing angle between an internal voltage of the source end generator and an internal voltage of the receiving end generator as a function of obtained voltage phasor, current phasor, mechanical rotor angle and the impedances is estimated. A power swing condition is then determined based on the estimated swing angle.

公开(公告)号：US20190067946A1

公开(公告)日：2019-02-28

申请号：US15688370

申请日：2017-08-28

Applicant: General Electric Company

Inventor： Yan Pan ,  William James Premerlani

IPC: H02J3/28 ,  G06Q50/06

Abstract: A method for short term load forecasting in a power grid includes obtaining historical data comprising power data, load data and weather data corresponding to time index data recorded from a location in a power distribution network of the power grid. The method further includes receiving power grid data comprising a plurality of power values, and a plurality of weather parameter values corresponding to a plurality of recent time instant values. The method also includes generating modified historical data using statistical techniques to rectify error conditions. The method further includes estimating one or more power values at a future time instant based on the modified historical data and the power grid data. The method also includes balancing load of the power distribution network based on the estimated one or more power values.

公开(公告)号：US10024920B2

公开(公告)日：2018-07-17

申请号：US13968684

申请日：2013-08-16

Applicant: General Electric Company

Inventor： Yan Pan ,  William James Premerlani

IPC: G01R31/34 ,  G01R19/25 ,  H02J3/24 ,  H02H3/38

Abstract: In accordance with one embodiment, a method for detection of power swing for at least a first range of swing angles between an internal voltage (ES) of a source-end generator and an internal voltage (ER) of a receiving-end generator is provided. The method includes obtaining a voltage magnitude (VS) of the source-end generator, and a current magnitude (IS) of the source-end generator. The method further includes estimating a total reactance (X) between the source-end generator and the receiving-end generator, and estimating a first swing angle (θ) between the ES and the ER as a function of the obtained VS, the obtained IS and the estimated X. The method further includes detecting a power swing condition based on the estimated θ.

公开(公告)号：US20160147215A1

公开(公告)日：2016-05-26

申请号：US14548699

申请日：2014-11-20

Applicant: General Electric Company

Inventor： Chaitanya Ashok Baone ,  William James Premerlani ,  Yan Pan ,  Jing Dai ,  Santosh Sambamoorthy Veda ,  Zhenyu Tan

IPC: G05B19/406

CPC classification number: G05B19/406 ,  G01R19/2513 ,  G05B2219/32021 ,  H02J3/008 ,  H02J2003/007 ,  Y02E60/728 ,  Y02E60/76 ,  Y04S10/265 ,  Y04S40/22 ,  Y04S50/10

Abstract: A method for modelling load in a power grid is provided. The method includes obtaining measurement data from a measurement device in the power grid, identifying one or more voltage adjustment events in the power grid from the measurement data, and generating a load model based on one or more voltage factors computed using the one or more voltage adjustment events.

Abstract translation: 提供了一种用于建模电网负载的方法。 该方法包括从电网中的测量设备获取测量数据，从测量数据识别电网中的一个或多个电压调整事件，以及基于使用一个或多个电压计算的一个或多个电压因子来生成负载模型 调整事件。

公开(公告)号：US20140118000A1

公开(公告)日：2014-05-01

申请号：US13665479

申请日：2012-10-31

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Yan Pan ,  William James Premerlani

IPC: G01R31/08

CPC classification number: G01R31/08 ,  H02H1/0061 ,  H02H3/305 ,  H02H7/263

Abstract: A current differential protection system for a multi-terminal power line includes a current sensor for sensing a current at a local terminal, a controller for time synchronizing the local terminal and remote terminals, and a fault detection module to detect a fault in the multi-terminal power line if a differential current exceeds a threshold value. The controller includes a time measurement exchange module for exchanging time stamp data with remote terminals, an upper range clock for exchanging time stamp data with remote terminals and a lower range clock for indexing the current at the local terminal. A first time period of the upper range clock is N times a second time period of the lower range clock where N is a number of multi-terminals. The controller includes a clock offset calculation module for determining an average time offset based on time stamp data from remote terminals and the local terminal.

Abstract translation: 一种用于多终端电力线路的电流差动保护系统，包括用于感测本地终端电流的电流传感器，用于使本地终端和远端终端同步的控制器，以及用于检测多终端电力线路故障的故障检测模块， 如果差分电流超过阈值，则终端电力线。 控制器包括用于与远程终端交换时间戳数据的时间测量交换模块，用于与远程终端交换时间戳数据的较高范围时钟和用于对本地终端的电流进行索引的较低范围时钟。 上限范围时钟的第一时间段是下限时钟的第二时间段的N倍，其中N是多个终端的数量。 控制器包括时钟偏移计算模块，用于基于来自远程终端和本地终端的时间戳数据来确定平均时间偏移。