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公开(公告)号：US20220376491A1
公开(公告)日：2022-11-24
申请号：US17741502
申请日：2022-05-11
申请人： Southern States, LLC
发明人： Joseph R Rostron , Jiyuan Fan
摘要： A time-admittance fault detection and isolation system includes a series of time-admittance switches spaced apart along the power line, each including a respective time-admittance function. Together, the time-admittance functions define a cascade trip sequence in a downstream-to-upstream direction, which autonomously causes a closest upstream time-admittance switch to a fault to trip to isolate the fault on an upstream side of the fault without communication with the time-admittance switches. The fault detection and isolation system may also include a radio communicating a trip signal from the closest upstream time-admittance switch to the fault to a closest downstream time-admittance switch to the fault. The trip signal causes the closest downstream time-admittance switch to the fault to trip to isolate the fault on a downstream side of the fault. A tie switch closes to back-feed a portion of the electric power line downstream from the closest downstream time-admittance switch to the fault.
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公开(公告)号：US11063425B2
公开(公告)日：2021-07-13
申请号：US16292039
申请日：2019-03-04
申请人： Southern States, LLC
发明人： Jiyuan Fan , Joseph R Rostron , Hua Fan , David Moore , Raj Anand , Brian Berner , Buddy Reneau
摘要： Fault detection, isolation and restoration systems for electric power systems using “smart switch” points that autonomously coordinate operations to minimize the number of customers affected by outages and their durations, without relying on communications with a central controller or between the smart switch points. Each smart recloser can be individually programmed to operate as a tie-switch, a Type-A (normal or default type) sectionalizer, or a Type-B (special type) sectionalizer. The Type-A recloser automatically opens when it detects a fault, uses a direction-to-fault and zone-based distance-to-fault operating protocol, and stays “as is” with no automatic opening when power (voltage) is lost on both sides of the switch. The Type-B sectionalizer does the same thing and is further configured to automatically open when it detects that it is deenergized on both sides for a pre-defined time period, and to operate like a tie-switch once open.
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公开(公告)号：US20200049743A1
公开(公告)日：2020-02-13
申请号：US16660278
申请日：2019-10-22
申请人： Southern States, LLC
发明人： Josh Keister , Joseph R Rostron , Jiyuan Fan , Tan Tran
摘要： The present invention may be embodied in an in-line high voltage electric power line monitor including a DC current sensor, an AC current sensor, an energy harvesting power supply, and a communication device. The in-line power line monitor includes a bus bar that connects in series with the monitored power line. For example, the in-line power line monitor may be connected at the junction point between the monitored power line and a support structure, such a sectionalizing switch that supports the monitor positioned between the switch and the power line. A pair of DC current measurement pickups are spaced apart on the bus bar and operatively connected to the microprocessor. The in-line power line monitor also includes an AC current sensor coil and an energy harvesting device (e.g., inductive coil) that surround the bus bar. The AC current sensor coil and the power supply coil are positioned adjacent to, but spaced apart from, the bus bar. An electronics board pair carries a pair of foil patch antenna elements positioned adjacent to the outer perimeter of the electronics board. Although the in-line power line monitor does not require a separate power supply, the electronics board may carry a backup battery if desired.
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4.发明申请公开(公告)号：US20190280476A1
公开(公告)日：2019-09-12
申请号：US16292267
申请日：2019-03-04
申请人： Southern States, LLC
发明人： Jiyuan Fan , Joseph R. Rostron , Hua Fan , David Moore , Raj Anand , Brian Berner , Buddy Reneau
摘要： Electric power Fault detection, isolation and restoration (FDIR) systems using “smart switches” that autonomously coordinate operations to minimize the number of customers affected by outages and their durations, without relying on communications with a central controller or between the smart switch points. The smart switches typically operate during the substation breaker reclose cycles while the substation breakers are open, which enables the substation breakers to reclose successfully to restore service within their normal reclosing cycles. Alternatively, the smart switch may be timed to operate before the substation breakers trip to effectively remove the substation breakers from the fault isolation process. Both approaches allow the FDIR system to be installed with minimal reconfiguration of the substation protection scheme.
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公开(公告)号：US11791622B2
公开(公告)日：2023-10-17
申请号：US17741502
申请日：2022-05-11
申请人： Southern States, LLC
发明人： Joseph R Rostron , Jiyuan Fan
CPC分类号： H02H7/222 , H02H1/0007
摘要： A time-admittance fault detection and isolation system includes a series of time-admittance switches spaced apart along the power line, each including a respective time-admittance function. Together, the time-admittance functions define a cascade trip sequence in a downstream-to-upstream direction, which autonomously causes a closest upstream time-admittance switch to a fault to trip to isolate the fault on an upstream side of the fault without communication with the time-admittance switches. The fault detection and isolation system may also include a radio communicating a trip signal from the closest upstream time-admittance switch to the fault to a closest downstream time-admittance switch to the fault. The trip signal causes the closest downstream time-admittance switch to the fault to trip to isolate the fault on a downstream side of the fault. A tie switch closes to back-feed a portion of the electric power line downstream from the closest downstream time-admittance switch to the fault.
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公开(公告)号：US20190277904A1
公开(公告)日：2019-09-12
申请号：US16292039
申请日：2019-03-04
申请人： Southern States, LLC
发明人： Jiyuan Fan , Joseph R. Rostron , Hua Fan , David Moore , Raj Anand , Brian Berner , Buddy Reneau
摘要： Fault detection, isolation and restoration systems for electric power systems using “smart switch” points that autonomously coordinate operations to minimize the number of customers affected by outages and their durations, without relying on communications with a central controller or between the smart switch points. Each smart recloser can be individually programmed to operate as a tie-switch, a Type-A (normal or default type) sectionalizer, or a Type-B (special type) sectionalizer. The Type-A recloser automatically opens when it detects a fault, uses a direction-to-fault and zone-based distance-to-fault operating protocol, and stays “as is” with no automatic opening when power (voltage) is lost on both sides of the switch. The Type-B sectionalizer does the same thing and is further configured to automatically open when it detects that it is deenergized on both sides for a pre-defined time period, and to operate like a tie-switch once open.
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7.发明申请公开(公告)号：US20180321286A1
公开(公告)日：2018-11-08
申请号：US15971991
申请日：2018-05-04
申请人： Southern States, LLC
发明人： Josh Keister , Joseph R. Rostron , Jiyuan Fan , Tan Tran
CPC分类号： G01R19/2513 , G01R15/142 , G01R15/16 , G01R15/18 , G01R15/181 , G01R15/183 , G01R21/06 , G01R21/133 , G06F1/26 , H05K9/0081
摘要： The present invention may be embodied in an in-line high voltage electric power line monitor including a DC current sensor, an AC current sensor, a voltage sensor, an energy harvesting power supply, and a communication device configured. The in-line power line monitor includes a bus bar that connects in series with the monitored power line. For example, the in-line power line monitor may be connected at the junction point between the monitored power line and a support structure, such a sectionalizing switch that supports the monitor positioned between the switch and the power line. A pair of DC current measurement pickups are spaced apart on the bus bar and operatively connected to the microprocessor. The in-line power line monitor also includes an AC current sensor coil and an energy harvesting device (e.g., inductive coil) that surround the bus bar. The AC current sensor coil, the power supply coil and the voltage sensor positioned adjacent to, but spaced apart from, the bus bar. An electronics board pair carries a pair of foil patch voltage sensors and a pair of foil patch antenna elements positioned adjacent to the outer perimeter of the electronics board. Although the in-line power line monitor does not require a separate power supply, the electronics board may carry a backup battery if desired.
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公开(公告)号：US20180321285A1
公开(公告)日：2018-11-08
申请号：US15971968
申请日：2018-05-04
申请人： Southern States, LLC
发明人： Josh Keister , Joseph R Rostron , Jiyuan Fan , Tan Tran
摘要： A high voltage electric power line monitor includes a current sensor, and voltage sensor, an energy harvesting power supply, and communication device. The monitor is configured to be supported by a structure, such a sectionalizing switch disposed within an insulator cylinder. The current sensor coil and an energy harvesting coils are configured to surround and be positioned transverse to the monitored power line with the power line extending through an aperture formed by the current sensor. A foil patch voltage sensor is carried on an electronics board configured to be positioned parallel to the monitored power line, typically below the current sensor. Both the current sensor and the voltage sensor are configured to positioned adjacent to, but spaced apart from, the monitored power line. The sensors are housed within a Faraday cage to shield the current sensor from electromagnetic contamination.
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公开(公告)号：US12068589B2
公开(公告)日：2024-08-20
申请号：US17978185
申请日：2022-10-31
申请人： Southern States, LLC
发明人： Joseph R Rostron , Rajesh Anand , Jiyuan Fan
摘要： A system or method for monitoring an electric power lightning arrester including an arrester current sensor providing an arrester current measurement, and an arrester voltage sensor providing an arrester voltage measurement. The system detects a switching signature based on the arrester current measurement or the arrester voltage measurement distinguished from background noise and lightning signatures and computes a measured arrester impedance based on the arrester current and arrester voltage measurements. The system then compares the measured arrester impedance to a nominal or historical arrester impedance, determines that the arrester is faltering based on the comparison of the measured arrester impedance to the nominal or historical arrester impedance, and places an order for replacement of the arrester based on the determination that the arrester is faltering. The system operator then replaces the arrester during a fair-weather, typically off-peak period to avoid failure of the arrester during a lightning strike.
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公开(公告)号：US11223196B2
公开(公告)日：2022-01-11
申请号：US16249683
申请日：2019-01-16
申请人： Southern States, LLC
发明人： Joseph R Rostron , Jiyuan Fan , Teng Hu
摘要： A fault-preventing circuit recloser includes a ballast impedance, power line current and voltage monitors, and controller that operates the switch based on measurements obtained from the current and voltage monitors. The controller aborts the closing (i.e., reopens the switch) when the controller detects that the switch has closed into faulted line. The circuit recloser temporarily introduces the ballast impedance into the circuit during the closing operation to limit the current spike and voltage dip caused by initially closing the switch into the faulted line. The circuit recloser also temporarily introduces the ballast impedance into the circuit during the opening operation to limit the voltage transient that can be caused by initially opening a load-carrying power line. Different ballast resistor insertion times are applied depending on the type of recloser operation (opening or closing) and whether a fault is detected.
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