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公开(公告)号：EP2728693B1
公开(公告)日：2016-04-06
申请号：EP13190440.1
申请日：2013-10-28
CPC分类号： G01R31/08 , H02H1/0061 , H02H3/305 , H02H7/263
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公开(公告)号：EP2493046A2
公开(公告)日：2012-08-29
申请号：EP12157062.6
申请日：2012-02-27
发明人： Krok, Michael Joseph , Pan, Yan , Ren, Wei
IPC分类号： H02J3/00
CPC分类号： H02J3/00 , G06Q10/04 , G06Q50/06 , H02J2003/003 , Y04S10/54
摘要： A method (50) of load forecasting for a present day includes obtaining (52) past observed load values of at least three earlier days and identifying (54) a relationship between the present day's load forecast and the past observed load values including unknown weights associated with the past observed load values. The values of unknown weights are determined (56) by comparing at least one previous day's load forecast with the observed load value of the at least one previous day. The determined weight values are then used in the relationship (58) between the present day's load forecast and the past observed load values to forecast the present day's load.
摘要翻译： 目前的负荷预测的方法（50）包括获得（52）过去观察到的至少三个早期的负载值，并且识别（54）当前的负载预测与过去观察到的负载值之间的关系，包括关联的未知权重 与过去观察到的负载值。 通过将至少一个前一天的负载预测与至少一个前一天的观测到的负载值进行比较来确定未知权重的值（56）。 然后将确定的权重值用于当前负荷预测与过去观察到的负荷值之间的关系（58），以预测当前的负荷。
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公开(公告)号：EP2744130A3
公开(公告)日：2018-01-10
申请号：EP13196763.0
申请日：2013-12-11
CPC分类号： H04L41/0668 , H02H1/0061 , H02H3/305 , H02J13/00 , H02J13/0079 , H04J3/0638 , H04J3/0641 , H04L12/40 , H04L12/4035 , H04L41/0686 , H04L41/12
摘要： A differential protection system is provided. The differential protection system includes a local terminal (102) configured to be communicatively coupled directly or indirectly with at least two remote terminals (104) via at least three communication links to form a ring topology or a mesh topology. The differential protection system further includes a controller (122,124,126) comprising a communication link decision unit (308) and a clock unit (310) associated with the local terminal (102). The communication link decision unit (308) is configured to determine some of the at least three communication links as virtually disconnected such that the ring topology or the mesh topology is configured to be converted to a daisy chain topology. The clock unit (310) is configured to time synchronize the local terminal (102) with at least one of the at least two remote terminals (104) when the local terminal (102) and the at least two remote terminals (104) are configured in the daisy chain topology.
摘要翻译： 提供差动保护系统。 差动保护系统包括本地终端（102），其被配置为经由至少三个通信链路直接或间接地与至少两个远程终端（104）通信地耦合以形成环形拓扑或网状拓扑。 差动保护系统还包括控制器（122,124,126），该控制器包括与本地终端（102）相关联的通信链路判定单元（308）和时钟单元（310）。 通信链路决定单元（308）被配置为将至少三个通信链路中的一些确定为虚拟断开连接，使得环形拓扑或网状拓扑被配置为被转换为菊花链拓扑。 时钟单元（310）被配置为当本地终端（102）和至少两个远程终端（104）被配置时使本地终端（102）与至少两个远程终端（104）中的至少一个时间同步 在菊花链拓扑中。
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公开(公告)号：EP2493046A3
公开(公告)日：2013-09-18
申请号：EP12157062.6
申请日：2012-02-27
发明人： Krok, Michael Joseph , Pan, Yan , Ren, Wei
CPC分类号： H02J3/00 , G06Q10/04 , G06Q50/06 , H02J2003/003 , Y04S10/54
摘要： A method (50) of load forecasting for a present day includes obtaining (52) past observed load values of at least three earlier days and identifying (54) a relationship between the present day's load forecast and the past observed load values including unknown weights associated with the past observed load values. The values of unknown weights are determined (56) by comparing at least one previous day's load forecast with the observed load value of the at least one previous day. The determined weight values are then used in the relationship (58) between the present day's load forecast and the past observed load values to forecast the present day's load.
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公开(公告)号：EP2493046B1
公开(公告)日：2016-08-03
申请号：EP12157062.6
申请日：2012-02-27
发明人： Krok, Michael Joseph , Pan, Yan , Ren, Wei
CPC分类号： H02J3/00 , G06Q10/04 , G06Q50/06 , H02J2003/003 , Y04S10/54
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6.发明公开Systems and methods for power swing angle estimation in an electrical power system 审中-公开用于在电气系统中估计功率振荡的角度的系统和方法
公开(公告)号：EP2840674A3
公开(公告)日：2015-09-30
申请号：EP14180548.1
申请日：2014-08-11
CPC分类号： G01R31/343 , G01R19/2513 , H02H3/382 , H02J3/24
摘要： In accordance with one embodiment, a method for hundred for detection of power swing for at least a first range of swing angles between an internal voltage (E S ) of a source-end generator and an internal voltage (E R ) of a receiving-end generator is provided. The method 400 includes obtaining a voltage magnitude (V S ) (402) of the source-end generator, and a current magnitude (Is) (404) of the source-end generator. The method further includes estimating (406) a total reactance (X) between the source-end generator and the receiving-end generator, and estimating (408) a first swing angle (θ) between the E S and the E R as a function of the obtained V S , the obtained Is and the estimated X. The method (400) further includes detecting (410) a power swing condition based on the estimated θ.
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7.发明公开Method and system for current differential protection 审中-公开Verfahren und SystemfürStromdifferentialschutz
公开(公告)号：EP2744130A2
公开(公告)日：2014-06-18
申请号：EP13196763.0
申请日：2013-12-11
CPC分类号： H04L41/0668 , H02H1/0061 , H02H3/305 , H02J13/00 , H02J13/0079 , H04J3/0638 , H04J3/0641 , H04L12/40 , H04L12/4035 , H04L41/0686 , H04L41/12
摘要： A differential protection system is provided. The differential protection system includes a local terminal (102) configured to be communicatively coupled directly or indirectly with at least two remote terminals (104) via at least three communication links to form a ring topology or a mesh topology. The differential protection system further includes a controller (122,124,126) comprising a communication link decision unit (308) and a clock unit (310) associated with the local terminal (102). The communication link decision unit (308) is configured to determine some of the at least three communication links as virtually disconnected such that the ring topology or the mesh topology is configured to be converted to a daisy chain topology. The clock unit (310) is configured to time synchronize the local terminal (102) with at least one of the at least two remote terminals (104) when the local terminal (102) and the at least two remote terminals (104) are configured in the daisy chain topology.
摘要翻译： 提供差动保护系统。 差分保护系统包括被配置为经由至少三个通信链路直接或间接地与至少两个远程终端（104）通信地耦合以形成环形拓扑或网格拓扑的本地终端（102）。 差分保护系统还包括控制器（122,124,126），其包括通信链路决定单元（308）和与本地终端（102）相关联的时钟单元（310）。 通信链路决定单元（308）被配置为将所述至少三个通信链路中的一些确定为虚拟断开，使得环形拓扑或网状拓扑被配置为被转换为菊花链拓扑。 时钟单元（310）被配置为当本地终端（102）和至少两个远程终端（104）被配置时，使本地终端（102）与至少两个远程终端（104）中的至少一个进行时间同步 在菊花链拓扑中。
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公开(公告)号：EP2840674B1
公开(公告)日：2020-12-02
申请号：EP14180548.1
申请日：2014-08-11
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9.发明公开Systems and methods for power swing angle estimation in an electrical power system 审中-公开Systeme und Methoden，um den Winkel einer Leistungsschwingung in einem elektrischen Systemabzuschätzen
公开(公告)号：EP2840674A2
公开(公告)日：2015-02-25
申请号：EP14180548.1
申请日：2014-08-11
IPC分类号： H02J3/24
CPC分类号： G01R31/343 , G01R19/2513 , H02H3/382 , H02J3/24
摘要： In accordance with one embodiment, a method for hundred for detection of power swing for at least a first range of swing angles between an internal voltage (E S ) of a source-end generator and an internal voltage (E R ) of a receiving-end generator is provided. The method 400 includes obtaining a voltage magnitude (V S ) (402) of the source-end generator, and a current magnitude (Is) (404) of the source-end generator. The method further includes estimating (406) a total reactance (X) between the source-end generator and the receiving-end generator, and estimating (408) a first swing angle (θ) between the E S and the E R as a function of the obtained V S , the obtained Is and the estimated X. The method (400) further includes detecting (410) a power swing condition based on the estimated θ.
摘要翻译： 根据一个实施例，一种用于在源端发生器的内部电压（ES）和接收端发生器的内部电压（ER）之间的至少第一旋转角度范围内检测功率摆幅的方法， 被提供。 方法400包括获得源端发生器的电压幅度（V S）（402）和源端发生器的电流幅度（Is）（404）。 该方法还包括估计（406）源端发生器和接收端发生器之间的总电抗（X），并且估计（408）ES和ER之间的第一摆角（¸）作为 获得的VS，所获得的Is和估计的X.方法（400）还包括基于估计的¸来检测（410）功率摆动条件。
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公开(公告)号：EP2728693A1
公开(公告)日：2014-05-07
申请号：EP13190440.1
申请日：2013-10-28
CPC分类号： G01R31/08 , H02H1/0061 , H02H3/305 , H02H7/263
摘要： 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 (80) for time synchronizing the local terminal and remote terminals, and a fault detection module (98) to detect a fault in the multi-terminal power line if a differential current exceeds a threshold value. The controller (80) includes a time measurement exchange module (94) 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 (80) includes a clock offset calculation module for determining an average time offset based on time stamp data from remote terminals and the local terminal.
摘要翻译： 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的电流的电流传感器，用于对本地终端和远程终端进行时间同步的控制器（80），以及检测模块 如果差分电流超过阈值，则多终端电力线路中的故障。 控制器（80）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（94），用于与远程终端交换时间戳数据的上限时钟和用于对本地终端的电流进行索引的下限时钟。 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（80）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量。
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