-
公开(公告)号：US5809045A
公开(公告)日：1998-09-15
申请号：US713295
申请日：1996-09-13
申请人： Mark Gerard Adamiak , George Edmund Alexander , William James Premerlani , Emilie Thorbjorg Saulnier , Birsen Yazici
发明人： Mark Gerard Adamiak , George Edmund Alexander , William James Premerlani , Emilie Thorbjorg Saulnier , Birsen Yazici
IPC分类号： G01R19/25 , H02H3/05 , H02H3/28 , H02H3/347 , H02H3/38 , H02H3/40 , H02H7/045 , H02H7/26 , G06F11/34
摘要： A method of detecting faults on a power transmission line system includes simultaneously measuring phase current samples at each phase of each transmission terminal; calculating real and imaginary phaselets comprising partial sums of the phase current samples; for each phaselet, calculating a respective partial sum of squares of each phase current sample; calculating the sums of the real and imaginary phaselets over a variable size sliding sample window; calculating real and imaginary phasor components from the phaselets and a sum of the partial sums of the squares over the sample window; using the sums of the real and imaginary phaselets, the real and imaginary phasor components, and the sum of the partial sums of the squares to calculate a sum of squares of errors between the phase current samples and a fitted sine wave representative of the real and imaginary phasor components; using the sum of squares of errors to calculate a variance matrix defining an elliptical uncertainty region; determining whether a disturbance has occurred, and, if so, re-initializing the sample window; and determining whether a sum of current phasors from each terminal for a respective phase falls outside of the elliptical uncertainty region for the respective phase.
-
公开(公告)号：US06456947B1
公开(公告)日：2002-09-24
申请号：US09698549
申请日：2000-10-30
申请人： Mark Gerard Adamiak , George Edmund Alexander , William James Premerlani , Emilie Thorbjorg Saulnier , Birsen Yazici
发明人： Mark Gerard Adamiak , George Edmund Alexander , William James Premerlani , Emilie Thorbjorg Saulnier , Birsen Yazici
IPC分类号： G01R3100
摘要： A method of detecting faults on a power transmission line system includes simultaneously measuring phase current samples at each phase of each transmission terminal; calculating real and imaginary phaselets comprising partial sums of the phase current samples; for each phaselet, calculating a respective partial sum of squares of each phase current sample; calculating the sums of the real and imaginary phaselets over a variable size sliding sample window; calculating real and imaginary phasor components from the phaselets and a sum of the partial sums of the squares over the sample window; using the sums of the real and imaginary phaselets, the real and imaginary phasor components, and the sum of the partial sums of the squares to calculate a sum of squares of errors between the phase current samples and a fitted sine wave representative of the real and imaginary phasor components; using the sum of squares of errors to calculate a variance matrix defining an elliptical uncertainty region; determining whether a disturbance has occurred, and, if so, re-initializing the sample window; and determining whether a sum of current phasors from each terminal for a respective phase falls outside of the elliptical uncertainty region for the respective phase.
摘要翻译： 一种检测输电线路系统故障的方法，包括同时测量每个发送终端各相的相电流采样; 计算包括所述相电流样本的部分和的实部和虚拟相位元; 对于每个阶段，计算每个相电流样本的相应部分平方和; 在可变尺寸的滑动样本窗口上计算实数和虚拟相位的和; 从相位图计算实部和虚部相量分量，以及样本窗口上的平方的部分和的总和; 使用实数和虚拟相位的总和，实相和虚相量分量，以及平方的部分和的和来计算相电流样本和拟合的正弦波之间的平方和之和，所述拟合正弦波表示实数和 假想相量分量; 使用误差平方和来计算定义椭圆不确定区域的方差矩阵; 确定是否发生干扰，如果是，则重新初始化样本窗口; 以及确定来自各个相位的每个终端的电流相量的和是否落在相位相位的椭圆不确定区域之外。
-
公开(公告)号：US06311307B1
公开(公告)日：2001-10-30
申请号：US09104760
申请日：1998-06-25
申请人： Mark Gerard Adamiak , George Edmund Alexander , William James Premerlani , Emilie Thorbjorg Saulnier , Birsen Yazici
发明人： Mark Gerard Adamiak , George Edmund Alexander , William James Premerlani , Emilie Thorbjorg Saulnier , Birsen Yazici
IPC分类号： G06F1100
摘要： A method of detecting faults on a power transmission line system includes simultaneously measuring phase current samples at each phase of each transmission terminal; calculating real and imaginary phaselets comprising partial sums of the phase current samples; for each phaselet, calculating a respective partial sum of squares of each phase current sample; calculating the sums of the real and imaginary phaselets over a variable size sliding sample window; calculating real and imaginary phasor components from the phaselets and a sum of the partial sums of the squares over the sample window; using the sums of the real and imaginary phaselets, the real and imaginary phasor components, and the sum of the partial sums of the squares to calculate a sum of squares of errors between the phase current samples and a fitted sine wave representative of the real and imaginary phasor components; using the sum of squares of errors to calculate a variance matrix defining an elliptical uncertainty region; determining whether a disturbance has occurred, and, if so, re-initializing the sample window; and determining whether a sum of current phasors from each terminal for a respective phase falls outside of the elliptical uncertainty region for the respective phase.
摘要翻译： 一种检测输电线路系统故障的方法，包括同时测量每个发送终端各相的相电流采样; 计算包括所述相电流样本的部分和的实部和虚拟相位元; 对于每个阶段，计算每个相电流样本的相应部分平方和; 在可变尺寸的滑动样本窗口上计算实数和虚拟相位的和; 从相位图计算实部和虚部相量分量，以及样本窗口上的平方的部分和的总和; 使用实数和虚拟相位的总和，实相和虚相量分量，以及平方的部分和的和来计算相电流采样和拟合的正弦波之间的平方和之和，所述拟合正弦波表示实数和 假想相量分量; 使用误差平方和来计算定义椭圆不确定区域的方差矩阵; 确定是否发生干扰，如果是，则重新初始化样本窗口; 以及确定来自各个相位的每个终端的电流相量的和是否落在相位相位的椭圆不确定区域之外。
-
公开(公告)号：US07444248B2
公开(公告)日：2008-10-28
申请号：US11119113
申请日：2005-04-29
IPC分类号： G01R19/00
CPC分类号： G01R19/2513 , Y02E60/728 , Y04S10/265
摘要： A phasor measurement system is provided for computing synchronized phasor measurements. The phasor measurement system includes acquisition circuitry for acquiring voltage or current values from a power line, sampling circuitry for sampling the voltage or current values, and processing circuitry for computing a phasor and at least one time derivative of the phasor based on the sampled voltage or current values and for computing a synchronized phasor value based on the phasor and the at least one time derivative of the phasor.
摘要翻译： 提供相量测量系统用于计算同步相量测量。 相量测量系统包括用于从电力线获取电压或电流值的采集电路，用于对电压或电流值进行采样的采样电路，以及用于基于采样电压计算相量和相量的至少一次时间导数的处理电路， 基于相量和相量的至少一个时间导数来计算同步相量值的当前值。
-
5.发明授权Methods and apparatus for removing error due to decaying offsets from measured power system currents 失效用于消除由测量的电力系统电流引起的衰减偏移的误差的方法和装置
公开(公告)号：US5798932A
公开(公告)日：1998-08-25
申请号：US651178
申请日：1996-05-21
CPC分类号： H02H1/0092 , H02H7/26
摘要： A digital decaying current offset correction method and apparatus, in one aspect, separates the requirements of detecting fault existence from the requirements of detecting fault location. Once the decaying offset removal routine is initiated, current and voltage are sampled and, for each current and voltage sample, current and voltage phasors are generated. The current phasor values, which are not offset corrected, may be used to determine whether to trip a breaker. Once the breaker is tripped, the decaying offsets are removed from the current phasors. The offset corrected current phasors are then used to locate the fault.
摘要翻译： 数字衰减电流偏移校正方法和装置，在一个方面，将检测故障存在的要求与检测故障定位的要求分开。 一旦开始衰减偏移去除程序，则对电流和电压进行采样，并且对于每个电流和电压采样，产生电流和电压相量。 可以使用未校正的当前相量值来确定是否跳闸。 一旦断路器跳闸，衰减的偏移量从当前相量中移除。 然后使用偏移校正的电流相量来定位故障。
-
公开(公告)号：US06571182B2
公开(公告)日：2003-05-27
申请号：US09776483
申请日：2001-02-05
IPC分类号： G06F1134
摘要： A method of detecting faults on a power transmission line system includes simultaneously measuring phase current samples at each phase of each transmission terminal; calculating real and imaginary phaselets comprising partial sums of the phase current samples; for each phaselet, calculating a respective partial sum of squares of each phase current sample; calculating the sums of the real and imaginary phaselets over a variable size sliding sample window; calculating real and imaginary phasor components from the phaselets and a sum of the partial sums of the squares over the sample window; using the sums of the real and imaginary phaselets, the real and imaginary phasor components, and the sum of the partial sums of the squares to calculate a sum of squares of errors between the phase current samples and a fitted sine wave representative of the real and imaginary phasor components; using the sum of squares of errors to calculate a variance matrix defining an elliptical uncertainty region; determining whether a disturbance has occurred, and, if so, re-initializing the sample window; and determining whether a sum of current phasors from each terminal for a respective phase falls outside of the elliptical uncertainty region for the respective phase.
摘要翻译： 一种检测输电线路系统故障的方法，包括同时测量每个发送终端各相的相电流采样; 计算包括所述相电流样本的部分和的实部和虚拟相位元; 对于每个阶段，计算每个相电流样本的相应部分平方和; 在可变尺寸的滑动样本窗口上计算实数和虚拟相位的和; 从相位图计算实部和虚部相量分量，以及样本窗口上的平方的部分和的总和; 使用实数和虚拟相位的总和，实相和虚相量分量，以及平方的部分和的和来计算相电流采样和拟合的正弦波之间的平方和之和，所述拟合正弦波表示实数和 假想相量分量; 使用误差平方和来计算定义椭圆不确定区域的方差矩阵; 确定是否发生干扰，如果是，则重新初始化样本窗口; 以及确定来自各个相位的每个终端的电流相量的和是否落在相位相位的椭圆不确定区域之外。
-
7.发明授权Micro-electromechanical system based arc-less switching with circuitry for absorbing electrical energy during a fault condition 有权基于微机电系统的无弧切换，具有在故障状态期间吸收电能的电路公开(公告)号：US08050000B2
公开(公告)日：2011-11-01
申请号：US12967526
申请日：2010-12-14
申请人： Joshua Isaac Wright , Kanakasabqapathi Subramanian , William James Premerlani , John Norton Park
发明人： Joshua Isaac Wright , Kanakasabqapathi Subramanian , William James Premerlani , John Norton Park
IPC分类号： H02H3/00
CPC分类号： H01H59/0009 , H01H9/541 , H01H2009/543 , H01H2071/008 , H03K17/08142 , H03K17/0822
摘要： A system is presented. The system includes a micro-electromechanical system switch. Further, the system includes a balanced diode bridge configured to suppress arc formation between contacts of the micro-electromechanical system switch. A pulse circuit is coupled to the balanced diode bridge to form a pulse signal in response to a fault condition. An energy-absorbing circuitry is coupled in a parallel circuit with the pulse circuit and is adapted to absorb electrical energy resulting from the fault condition without affecting a pulse signal formation by the pulse circuit.
摘要翻译： 提出了一个系统。 该系统包括微机电系统开关。 此外，该系统包括被配置为抑制微机电系统开关的触点之间的电弧形成的平衡二极管桥。 脉冲电路耦合到平衡二极管电桥以形成响应于故障状况的脉冲信号。 能量吸收电路与脉冲电路并联电路并且适于吸收由故障状态产生的电能，而不影响由脉冲电路形成的脉冲信号。
-
公开(公告)号：US20100061024A1
公开(公告)日：2010-03-11
申请号：US12209064
申请日：2008-09-11
IPC分类号： H01H73/18
CPC分类号： H01H59/0009 , H01H71/00 , H01H2071/008
摘要： An electrical switching device is presented. The electrical switching device includes multiple switch sets coupled in series. Each of the switch sets includes multiple switches coupled in parallel. A control circuit is coupled to the multiple switch sets and configured to control opening and closing of the switches. One or more intermediate diodes are coupled between the control circuit and each point between a respective pair of switch sets.
摘要翻译： 提出一种电气开关装置。 电气开关装置包括串联耦合的多个开关组。 每个开关组包括并联耦合的多个开关。 控制电路耦合到多个开关组并且被配置为控制开关的打开和关闭。 一个或多个中间二极管耦合在控制电路和相应的一对开关组之间的每个点之间。
-
公开(公告)号：US07663456B2
公开(公告)日：2010-02-16
申请号：US11303157
申请日：2005-12-15
申请人： Kanakasabapathi Subramanian , William James Premerlani , Ahmed Elasser , Stephen Daley Arthur , Somashekhar Basavaraj
发明人： Kanakasabapathi Subramanian , William James Premerlani , Ahmed Elasser , Stephen Daley Arthur , Somashekhar Basavaraj
IPC分类号： H01H51/22
CPC分类号： H01H59/0009 , H01H47/004 , H01H2050/049 , H01H2071/008
摘要： A micro-electromechanical system (MEMS) switch array for power switching includes an input node, an output node, and a plurality of MEMS switches, wherein the input node and the output node are independently in electrical communication with a portion of the plurality of MEMS switches, and wherein a failure of any one of the plurality of MEMS switches does not render ineffective another MEMS switch within the MEMS switch array.
摘要翻译： 用于功率切换的微机电系统（MEMS）开关阵列包括输入节点，输出节点和多个MEMS开关，其中输入节点和输出节点独立地与多个MEMS的一部分电通信 开关，并且其中所述多个MEMS开关中的任一个的故障不会使所述MEMS开关阵列内的另一个MEMS开关无效。
-
10.发明申请GROUND FAULT PROTECTION CIRCUIT FOR MULTI-SOURCE ELECTRICAL DISTRIBUTION SYSTEM 有权多源电力分配系统的接地故障保护电路公开(公告)号：US20100008000A1
公开(公告)日：2010-01-14
申请号：US12172809
申请日：2008-07-14
IPC分类号： H02H3/00
摘要： Disclosed herein is a ground fault protection circuit for an electrical distribution system, the electrical distribution system having a plurality of power sources each having an associated main circuit breaker and being electrically coupled to an associated load with a tie circuit breaker electrically coupled therebetween, the main and tie circuit breakers having associated therewith phase and neutral current transformers (CTs) for sensing an associated current. The ground fault protection circuit includes first, second and third auxiliary differential current transformers, each in signal communication with outputs of respective phase and neutral current transformers associated with respective first and second main circuit breakers and a tie circuit breaker. A control circuit has a defined topology that provides signal communication between each of the auxiliary differential current transformers.
摘要翻译： 本文公开了一种用于配电系统的接地故障保护电路，该配电系统具有多个电源，每个电源具有相关联的主断路器并且电耦合到相关联的负载，其中电连接在它们之间的接线断路器，主电源 以及具有相关联的用于感测相关电流的相位和零线电流互感器（CT）的断路器。 接地故障保护电路包括第一，第二和第三辅助差动电流互感器，每个互感器与与相应的第一和第二主断路器相关的各相和零线电流互感器的输出信号通信，以及连接断路器。 控制电路具有定义的拓扑，其提供每个辅助差动电流互感器之间的信号通信。
-
-
-
-
-
-
-
-
-
搜索结果
81 条记录 (耗时 0.047 秒)
