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81. 发明申请

WO2003090327A3 PROTECTIVE RELAY WITH SYNCHRONIZED PHASOR MEASUREMENT CAPABILITY FOR USE IN ELECTRIC POWER SYSTEMS 审中-公开
公开(公告)号：WO2003090327A3
公开(公告)日：2003-10-30
申请号：PCT/US2003/011163
申请日：2003-04-15
申请人： SCHWEITZER ENGINEERING LABORATORIES, INC.
发明人： SCHWEITZER, Edmund, O., III , ANDERSON, Luther, S. , GUZMAN-CASILLAS, Armando , ZWEIGLE, Gregary, C. , BENMOUYAL, Gabriel
IPC分类号： G01R19/22
摘要： The relay system (10) obtains voltage and current values from a power line and uses a first sampling element to sample the voltage and current values at selected intervals of time. The resulting sampled signals are used for power system-wide protection, control, monitoring and metering. The sampled signals are then resampled at a rate which is a selected multiple of the power system frequency. The results of the resampling are used by processing circuitry for protection functions including fault determinations.

82. 发明申请

WO2003090327A2 PROTECTIVE RELAY WITH SYNCHRONIZED PHASOR MEASUREMENT CAPABILITY FOR USE IN ELECTRIC POWER SYSTEMS 审中-公开
标题翻译：具有同步电动机系统同步测量能力的保护继电器
公开(公告)号：WO2003090327A2
公开(公告)日：2003-10-30
申请号：PCT/US2003/011163
申请日：2003-04-15
申请人： SCHWEITZER ENGINEERING LABORATORIES, INC.
发明人： SCHWEITZER, Edmund, O., III , ANDERSON, Luther, S. , GUZMAN-CASILLAS, Armando , ZWEIGLE, Gregary, C. , BENMOUYAL, Gabriel
IPC分类号： H02J
CPC分类号： H02H1/0007 , H02H3/40
摘要： The relay system obtains voltage and current values from a power line and uses a first sampling element to sample the voltage and current values at selected intervals of time. The resulting sampled signals are used for power system-wide protection, control, monitoring and metering. The sampled signals are then resampled at a rate which is a selected multiple of the power system frequency. The results of the resampling are used by processing circuitry for protection functions including fault determinations.
摘要翻译：继电器系统从电力线获得电压和电流值，并使用第一采样元件在选定的时间间隔对电压和电流值进行采样。所得到的采样信号用于电力系统范围的保护，控制，监测和计量。然后，采样信号以电力系统频率的选定倍数的速率重新采样。重采样的结果由处理电路用于保护功能，包括故障确定。

83. 发明申请

WO2003036312A2 DIRECTIONAL ELEMENT TO DETERMINE FAULTS ON UNGROUNDED POWER SYSTEMS 审中-公开
标题翻译：使用方向元素确定地下电力系统的电气故障
公开(公告)号：WO2003036312A2
公开(公告)日：2003-05-01
申请号：PCT/US2002/034059
申请日：2002-10-23
申请人： SCHWEITZER ENGINEERING LABORATORIES, INC.
发明人： ROBERTS, Jeffrey, B.
IPC分类号： G01R31/00
CPC分类号： H02H3/402 , G01R31/025 , H02H3/081
摘要： The directional element, following enablement under selected input current conditions, calculates a zero sequence impedance, in response to values of zero sequence voltage and zero sequence current. The current value is selected between two possible values, one being the value from an associated current transformer, the other being the sum of the currents I A +I B +I C . The calculated zero sequence impedance is then compared against sensitive selected threshold values, established particularly for ungrounded systems. A forward fault indication is provided when the calculated zero sequence impedance is above a first established sensitive threshold value, and a reverse fault indication is provided when the calculated zero sequence impedance is below a second established sensitive threshold value.
摘要翻译：响应于零序电压和零序电流的值，在选定的输入电流条件下启用的方向元件计算零序阻抗。当前值在两个可能的值之间选择，一个是来自相关联的电流互感器的值，另一个是电流IA + IB + IC的总和。然后将计算的零序阻抗与特别为未接地系统建立的敏感选定阈值进行比较。当所计算的零序阻抗高于第一建立的敏感阈值时提供正向故障指示，并且当所计算的零序阻抗低于第二建立的敏感阈值时提供反向故障指示。

84. 发明申请

WO2003005524A1 SYSTEM FOR ESTIMATING THE FREQUENCY OF THE POWER SIGNAL ON A POWER TRANSMISSION LINE 审中-公开
标题翻译：用于估计功率信号在电力传输线上的频率的系统
公开(公告)号：WO2003005524A1
公开(公告)日：2003-01-16
申请号：PCT/US2002/021216
申请日：2002-07-02
申请人： SCHWEITZER ENGINEERING LABORATORIES, INC.
发明人： GUZMAN-CASILLAS, Armando , BENMOUYAL, Gabriel
IPC分类号： H02H3/00
CPC分类号： G01R23/02 , H02H1/0007 , H02H1/04 , H02H3/12
摘要： The system (10) obtains the three phase voltages on the power line V A , V B and V C , either from a local primary (14) or local alternative source (16). The selected local source voltages (14, 16) are then applied through switches (20, 28), respectively, which are normally closed but are open in the event that the associated pole of each voltage phase is open. The voltages from the closed switches (20, 28) are applied to a calculating circuit (40) which produces a composite of the three voltages in accordance with a preselected formula. The composite voltage output is then normalized (44) and applied to a conventional frequency determination (estimating) circuit (46). This output (FREQ. OUTPUT) is an accurate system frequency for use by the protective relay.
摘要翻译：系统（10）从本地主（14）或本地备用源（16）获得电力线VA，VB和VC上的三相电压。然后分别通过开关（20,28）施加所选择的局部源极电压（14,16），所述开关（20,28）通常是闭合的，但是在每个电压相位的相关极点断开的情况下是断开的。来自闭合开关（20,28）的电压被施加到计算电路（40），该计算电路根据预选公式产生三个电压的复合。然后对复合电压输出进行归一化（44）并将其应用于传统的频率确定（估计）电路（46）。该输出（FREQ。OUTPUT）是保护继电器使用的精确系统频率。

85. 发明申请

WO2003003026A2 LINE DIFFERENTIAL PROTECTION SYSTEM FOR A POWER TRANSMISSION LINE 审中-公开
标题翻译：电力传输线路差分保护系统
公开(公告)号：WO2003003026A2
公开(公告)日：2003-01-09
申请号：PCT/US2002/020855
申请日：2002-07-01
申请人： SCHWEITZER ENGINEERING LABORATORIES, INC.
发明人： ROBERTS, Jeffrey, B.
IPC分类号： G01R
CPC分类号： H02H3/30 , H02H3/307
摘要： In a three terminal power line current differential protection system, all three phase current values (I A , I B and I C ) are obtained from all three terminals. The current values for each phase are processed in three successive processing operations, using in turn the current values from each terminal as local current values and the combination of the other two terminal current values in each case as the remote current values. The resulting local and remote current values are then processed against pre-selected values which establish a restrain region in the current ratio (alpha) plane. Current values for each set of local and combined remote currents which result in the ratio being within the restrain region result in a blocking signal while current values which result in a ratio outside of the region result in a tripping signal. If the outputs of the three processing operations agree, then that signal is the system output. If there is disagreement, the output produced when the terminal having the largest current (Imax) value is the local current is the system output.
摘要翻译：在三端（200,202,204）电力线电流差动保护系统中，从三个端子获得三相电流值。每个阶段的当前值在三个连续的处理操作中进行处理，从而将每个终端的当前值用作局部当前值，并将其他两个终端当前值的组合用作远程电流值。然后，根据预先选择的值对当前和远程电流值进行处理，从而建立当前比率“α”平面的约束区域。导致比率在限制区域（30）内的每组本地和组合的远程电流的电流值导致阻塞信号，而导致该区域之外的比率的电流值导致跳闸信号。如果三个处理操作的输出一致，则该信号是系统输出。如果存在不一致，则当具有最大电流值的端子是局部电流时产生的输出是系统输出。

86. 发明申请

WO2003001678A1 DELTA FILTER WITH AN ADAPTIVE TIME WINDOW FOR PROTECTIVE RELAYS 审中-公开
标题翻译：带保护继电器的自适应时间窗的DELTA过滤器
公开(公告)号：WO2003001678A1
公开(公告)日：2003-01-03
申请号：PCT/US2002/020120
申请日：2002-06-24
申请人： SCHWEITZER ENGINEERING LABORATORIES, INC.
发明人： BENMOUYAL, Gabriel , ROBERTS, Jeffrey, B.
IPC分类号： H03M1/48
CPC分类号： H02H1/0092 , H02H3/307
摘要： A delta filter for use in a protective relay which includes an input circuit (50) for receiving phasor signals (V) representative of electrical signal quantities on the power line. A difference value, if any, is determined between the phasor signals (V) at a present time and the phasor signals at a past point in time (reference phasor 1), the delay typically being one cycle. A first incremental output value (delta V1) is produced if there is a difference. When power line disturbance is first noted by the recognition of a first incremental output value, the phasor signal value at the beginning of the disturbance is stored (54) and then used as a reference value (reference phasor 2) for comparison with subsequent present time phasor signals to determine continuing change in power system condition.
摘要翻译：一种用于保护继电器的增量滤波器，其包括用于接收代表电力线上的电信号量的相量信号（V）的输入电路（50）。在当前时间的相量信号（V）和过去时间点（参考相量1）的相量信号之间确定差分值（如果有的话），延迟通常是一个周期。如果存在差异，则生成第一个增量输出值（delta V1）。当通过识别第一增量输出值首先注意到电源线干扰时，存储干扰开始时的相量信号值（54），然后用作参考值（参考相量2），以便与随后的当前时间进行比较相量信号确定电力系统状况的持续变化。

87. 发明申请

WO2021178357A1 ELECTRIC POWER DISTRIBUTION SECTIONALIZING IN HIGH-RISK AREAS USING WIRELESS FAULT SENSORS 审中-公开
公开(公告)号：WO2021178357A1
公开(公告)日：2021-09-10
申请号：PCT/US2021/020391
申请日：2021-03-02
申请人： SCHWEITZER ENGINEERING LABORATORIES, INC.
发明人： KECKALO, David Walter , HAO, Kei
IPC分类号： H02H3/06 , H02H3/00 , H02H3/02 , H02H3/08
摘要： Disclosed herein are systems and methods for safe electric power delivery protection within a high-risk area while maintaining electric power availability in non-faulted areas. Fault signals from wireless sensors are used at a recloser to block reclosing onto a faulted high-risk zone. Fault signals from wireless sensors are used at a recloser to permit reclosing when the reclosing operation will not close onto a fault location within the high-risk zone. Portions of the power system may be selectively openable by sectionalizers. When a fault is reported by a wireless sensor as being on a portion of the power system selectively openable, a recloser may be permitted to attempt a reclose operation affecting the high-risk zone and the selectively openable portion.

88. 发明申请

WO2021173993A1 CONTROL PANEL ASSEMBLY METHODS AND TECHNIQUES 审中-公开
公开(公告)号：WO2021173993A1
公开(公告)日：2021-09-02
申请号：PCT/US2021/019898
申请日：2021-02-26
申请人： SCHWEITZER ENGINEERING LABORATORIES, INC.
发明人： BARBER, Michael , ALZATE, Julian M. , JAYNE, Robert I.
IPC分类号： G06F1/18 , E04H5/02 , E04H5/04 , H05K7/14 , H05K7/18
摘要： Systems, apparatus, methods, and techniques of assembly of discrete modules of a control panel are disclosed. The modules can be independently wired, tested, and installed into a control panel. Module definitions are defined specifying components to perform the electrical function, a mechanical arrangement of the components, electrical connections, and logical interactions of the module. A bill of materials can be generated based on a designation of a set of modules for a control panel and the module definitions. Modularly assembled control panels are disclosed. An assembly frame is described herein for temporarily mounting components of a module for independent assembly of a control module and for eventual removal and installation into a control panel frame. The assembly frame may include a faceplate frame and side frames and temporary mounting features.

89. 发明申请

WO2021173324A1 FIRE RISK MITIGATION IN ELECTRIC POWER SYSTEMS 审中-公开
公开(公告)号：WO2021173324A1
公开(公告)日：2021-09-02
申请号：PCT/US2021/016791
申请日：2021-02-05
申请人： SCHWEITZER ENGINEERING LABORATORIES, INC.
发明人： WADE, Austin Edward , GUBBA RAVIKUMAR, Krishnanjan
IPC分类号： G01R31/08 , G01R31/50 , G01R31/52 , G01R31/54 , G01R31/58
摘要： Systems and methods may mitigate risk of fire caused by an electric power system. In one embodiment, a system may include an intelligent electronic device (IED). The IED includes a communication subsystem to receive a signal from a sensor related to a condition of the electric conductor. A processing subsystem in communication with the communication subsystem may operate in at least two modes comprising a high security mode and a fire prevention mode. In the fire prevention mode, the IED may interrupt a flow of electric current based on the signal from the at least one sensor associated with the electric conductor. In the high security mode, the system may interrupt a flow of electric current based on the signal from the at least one sensor associated with the electric conductor and based on a second condition relating to the electric conductor.

90. 发明申请

WO2021076341A1 TOKEN-BASED DEVICE ACCESS RESTRICTIONS BASED ON SYSTEM UPTIME 审中-公开
公开(公告)号：WO2021076341A1
公开(公告)日：2021-04-22
申请号：PCT/US2020/053745
申请日：2020-10-01
申请人： SCHWEITZER ENGINEERING LABORATORIES, INC.
发明人： GAMMEL, Dennis , POWERS, Josh , DEARIEN, Jason A. , PEREYDA, Joshua Thomas
IPC分类号： H04L9/32
摘要： Systems and methods are described herein for token-based access to an intelligent electronic device (IED) resource in a power delivery system. A token server and an IED resource may be communicatively connected via a communication network. The token server may generate a token associated with access privileges to one or more IED resources. The token server associates an access duration time with the generated token. The user presents the IED resource with the token as part of an access attempt. The IED resource grants access at a first time defined with reference to the device uptime of the IED resource until a second time defined with reference to the device up time. The difference between the first time and the second time corresponds to the access duration time of the token.

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