Patents Assigned to Southern California Edison
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Patent number: 11398725Abstract: Disclosed is a system that reduces fault currents in a power grid, thereby reducing the risk of unintentionally igniting a fire when an object comes in proximity to a high voltage power line. The circuit comprises an isolation transformer, a neutral connection, a current compensating device, and an automatic recloser or other circuit interrupting type protection system. The isolation transformer may comprise a delta-delta or delta-zigzag transformer with a one-to-one ratio between the input and output voltages and phase angle. The current compensating device is connected to the neutral and configured to redirect a substantial portion of a fault current to ground through the isolation transformer neutral instead of the fault itself. The current compensating device may comprise an arc suppression coil tuned to match the capacitance of the three phase outputs, or an inverter.Type: GrantFiled: April 16, 2020Date of Patent: July 26, 2022Assignee: Southern California Edison CompanyInventors: Jesse Rorabaugh, Andrew Swisher, Benjamin Garcia, Matthew Webster
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Patent number: 10871003Abstract: An energy transmission system comprising a pole, at least one wire, a sensing system coupled to the pole for monitoring pole temperature, dynamic pole loading, external impact on the pole, vibration of the pole, and wires that are downed, at least one line sensor coupled to the wire and at least one powered data integrator. The sensing system comprises at least one dynamic pole loading sensor and a three-dimensional accelerometer. The dynamic pole loading sensor can be coupled to the lower portion of the pole above ground level but not more than 10 feet above ground level. Optionally there are two dynamic pole loading sensors, the first sensor having a longitudinal axis parallel to a longitudinal axis of the pole, and the second sensor having a longitudinal axis perpendicular to the longitudinal axis of the pole.Type: GrantFiled: February 14, 2019Date of Patent: December 22, 2020Assignee: Southern California Edison CompanyInventors: Bryan Pham, James Palma, Viet Quoc Tran, Vibhu Kaushik
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Patent number: 10365315Abstract: A method for locating an anomaly in a distribution circuit including utility power lines includes coupling a radio frequency energy source to the utility power lines, transmitting chirped radio frequency signals into the utility power lines, receiving and digitizing/analyzing signals reflected from the chirped signals by impedance mismatches caused by components and features of the distribution circuit, and generating from the digitized signals of multiple sets of the chirped radio frequency signals a reference data set identifying at least the locations of at least some of the components and features of the distribution circuit. Later sets of the chirped radio frequency signals are transmitted into the utility power lines and signals reflected from the sets of chirped signals are received and digitized and are compared with the reference data set to determine if there are anomalies on the distribution circuit.Type: GrantFiled: May 12, 2017Date of Patent: July 30, 2019Assignee: Southern California EdisonInventors: Sean Mitchem, Jake Casey-Snyder, Ben Abbott, Yaxi Liu, Christopher M. Huff, Bryan Pham
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Publication number: 20180328976Abstract: A method for locating an anomaly in a distribution circuit including utility power lines includes coupling a radio frequency energy source to the utility power lines, transmitting chirped radio frequency signals into the utility power lines, receiving and digitizing/analyzing signals reflected from the chirped signals by impedance mismatches caused by components and features of the distribution circuit, and generating from the digitized signals of multiple sets of the chirped radio frequency signals a reference data set identifying at least the locations of at least some of the components and features of the distribution circuit. Later sets of the chirped radio frequency signals are transmitted into the utility power lines and signals reflected from the sets of chirped signals are received and digitized and are compared with the reference data set to determine if there are anomalies on the distribution circuit.Type: ApplicationFiled: May 12, 2017Publication date: November 15, 2018Applicant: Southern California EdisonInventors: Sean Mitchem, Jake Casey-Snyder, Ben Abbott, Yaxi Liu, Christopher M. Huff
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Publication number: 20150281278Abstract: A system for securing electric power grid operations from cyber-attack, the system comprising a collection of security services distributed throughout a smart grid in two main categories of services; central security services and edge security services.Type: ApplicationFiled: March 28, 2014Publication date: October 1, 2015Applicant: SOUTHERN CALIFORNIA EDISONInventors: Jeff Gooding, Jeremy McDonald
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Patent number: 8315827Abstract: A method for identifying an approximate fault location in a power transmission line comprises detecting first and second dominant frequencies in first and second recovering voltages resulting from the fault without using the velocity of either of the recovering voltages.Type: GrantFiled: April 20, 2009Date of Patent: November 20, 2012Assignee: Southern California EdisonInventors: Vitaly Faybisovich, Mark I. Khoroshev
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Patent number: 8155901Abstract: A system for real-time monitoring of synchrophasors from an electrical power system serving multiple geographic areas can control system instability, without preset parameters or thresholds, detects power flow between the generation sources. If a change in power flow of at least 5% over at time period of 1 second or less occurs and the response to the change in power flow is greater than the change in power flow a signal is generated for corrective action.Type: GrantFiled: May 1, 2008Date of Patent: April 10, 2012Assignee: Southern California EdisonInventors: Shimo Wang, Anthony Paul Johnson
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Publication number: 20110257924Abstract: A self-monitoring transformer is disclosed. The transformer uses sensors embedded in the coils to determine the expected lifespan of the insulation, as well as other operating parameters, and communicates that information to an external system.Type: ApplicationFiled: April 20, 2010Publication date: October 20, 2011Applicants: Southern California Edison, Howard Industries, Inc.Inventors: Gregory A. Bryant, Richard Hollingsworth, Samuel A. Impastato, Yu-Loong Liew, Allen John Thiel, III, Joe James Salazar
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Publication number: 20100217548Abstract: A method for identifying an approximate fault location in a power transmission line comprises detecting first and second dominant frequencies in first and second recovering voltages resulting from the fault without using the velocity of either of the recovering voltages.Type: ApplicationFiled: April 20, 2009Publication date: August 26, 2010Applicant: SOUTHERN CALIFORNIA EDISONInventors: Vitaly Faybisovich, Mark I. Khoroshev
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Publication number: 20100114515Abstract: A method for calibration process management of a calibration testing unit and a plurality of units under test, comprising configuring a user interface in communication with a calibration process management software system, configuring a communications link in communication with the software system, the software system capable of communicating with the calibration testing unit and the plurality of units under test, wherein the software system manages the user interface and the communications link in a manner permitting an operator to calibrate the plurality of units under test. Tracking of the calibrated units under test uses a permanent unique identifier and a dynamic unique identifier.Type: ApplicationFiled: September 14, 2009Publication date: May 6, 2010Applicant: SOUTHERN CALIFORNIA EDISON COMPANYInventors: Curtis V. Casto, Kevin C. Sullivan
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Publication number: 20090276173Abstract: A system for real-time monitoring of synchrophasors from an electrical power system serving multiple geographic areas can control system instability, without preset parameters or thresholds, detects power flow between the generation sources. If a change in power flow of at least 5% over at time period of 1 second or less occurs and the response to the change in power flow is greater than the change in power flow a signal is generated for corrective action.Type: ApplicationFiled: May 1, 2008Publication date: November 5, 2009Applicant: SOUTHERN CALIFORNIA EDISONInventors: Shimo Wang, Anthony Paul Johnson
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Patent number: 7599866Abstract: A method for determining a market clearing price (“MCP”) in an electricity market, in which an objective function relates the MCP and constraints in terms of a nonlinear programming expression, and the MCP is found by resolving an augmented Lagrangian dual function using a surrogate optimization framework. A system is also provided.Type: GrantFiled: December 23, 2003Date of Patent: October 6, 2009Assignees: Southern California Edison Company, The University of ConnecticutInventors: Joseph H. Yan, Peter B. Luh, Gary A. Stern, William E. Blankson, Ernan Ni, Ying Chen, Feng Zhao, Yaming Ma
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Patent number: 7561042Abstract: A portal barrier movement alarm includes an apparatus having (a) a first assembly adapted for attachment to the moveable portal barrier; (b) a second assembly adapted for attachment spaced apart from but proximate to the moveable portal barrier; (c) and a vibration inducing ridge and a vibratable prong, the vibratable prong having a vibratable free end, one of the vibration inducing ridge and the vibratable prong being attached to the first assembly and the other of the vibration inducing ridge and the vibratable prong being attached to the second assembly such that the movement of the first assembly with respect to the second assembly causes the vibratable prong to contact the vibration inducing ridge and to thereby cause the vibratable prong to vibrate.Type: GrantFiled: September 20, 2006Date of Patent: July 14, 2009Assignee: Southern California EdisonInventor: Steven D. Root
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Publication number: 20080312861Abstract: A method for calibration process management of a calibration testing unit and a plurality of units under test, comprising configuring a user interface in communication with a calibration process management software system, configuring a communications link in communication with the software system, the software system capable of communicating with the calibration testing unit and the plurality of units under test, wherein the software system manages the user interface and the communications link in a manner permitting an operator to calibrate the plurality of units under test. Tracking of the calibrated units under test uses a permanent unique identifier and a dynamic unique identifier.Type: ApplicationFiled: July 28, 2008Publication date: December 18, 2008Applicant: SOUTHERN CALIFORNIA EDISON COMPANYInventors: Curtis V. Casto, Kevin C. Sullivan, Laurence E. Nielsen
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Patent number: 7406388Abstract: A method for calibration process management of a calibration testing unit and a plurality of units under test, comprising configuring a user interface in communication with a calibration process management software system, configuring a communications link in communication with the software system, the software system capable of communicating with the calibration testing unit and the plurality of units under test, wherein the software system manages the user interface and the communications link in a manner permitting an operator to calibrate the plurality of units under test. Tracking of the calibrated units under test uses a permanent unique identifier and a dynamic unique identifier.Type: GrantFiled: September 11, 2003Date of Patent: July 29, 2008Assignee: Southern California EdisonInventors: Curtis V. Casto, Kevin C. Sullivan, Laurence E. Nielsen
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Patent number: 7317599Abstract: One embodiment of the invention provides a method, system, and device for the auto-reclosing a faulted power transmission line by measuring the characteristics of voltage on a faulted line to determine, in real-time, the moment that the secondary arc is extinguished. A device automatically selects between a plurality of arc extinguishing algorithms based on the compensation level of the transmission line. As a result, reclosing an on-going or existing fault is avoided, while restoration of normal power supply is performed with the minimal possible time interval.Type: GrantFiled: February 14, 2005Date of Patent: January 8, 2008Assignee: Southern California Edison CompanyInventors: Mark I. Khoroshev, Vitaly Faybisovich
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Patent number: 6978530Abstract: A basket assembly fixture is useful in the construction of a basket assembly for interring spent nuclear fuel rods. The basket assembly fixture has an elongate base and a pair of lifting beams disposed above the base. Lifting beam raising means are provided at both ends of the base to raise the pair of lifting beams. A transverse beam is provided below the two lifting beams and above the base. Transverse beam raising means are provided for raising the transverse beam.Type: GrantFiled: February 6, 2004Date of Patent: December 27, 2005Assignee: Southern California Edison Co., Inc.Inventors: Rick Busnardo, Robert Hill
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Patent number: 6708394Abstract: A basket assembly fixture is useful in the construction of a basket assembly for interring spent nuclear fuel rods. The basket assembly fixture has an elongate base and a pair of lifting beams disposed above the base. Lifting beam raising means are provided at both ends of the base to raise the pair of lifting beams. A transverse beam is provided below the two lifting beams and above the base. Transverse beam raising means are provided for raising the transverse beam.Type: GrantFiled: January 30, 2002Date of Patent: March 23, 2004Assignee: Southern California Edison Co., Inc.Inventors: Rick Busnardo, Robert Hill
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Patent number: 6366244Abstract: Antennas useable in all types of weather conditions are disclosed for use in various applications. The antenna is a flat array with either microstrip or slotted waveguide radiating elements. The radiating elements can be either transmitting or receiving elements for the array, or can be two arrays, each dedicated to one half of the transmission link. The array is covered with a radome to prevent water droplets, ice, or snow from forming on the antenna surface, thus allowing beam launching or beam reception at the antenna surface. The antennas can be used in a wide field of applications, including microsatellite communications links. Also disclosed is a microstrip, dual-band phased array antenna having a top dielectric including an antenna array patch directly coupled to a receive feed network and a lower dielectric having a transmit feed that is coupled to the antenna array patch through an intermediate metallization layer having coupling slots.Type: GrantFiled: November 19, 1999Date of Patent: April 2, 2002Assignee: Southern California Edison CompanyInventor: Roosevelt A. Fernandes
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Patent number: 6339372Abstract: An apparatus combination useful in carrying out work within hazardous environments, especially radioactive environments. The combination includes (a) a plurality of portable input modules, each portable input module being capable of receiving video, audio and radiation dosimetry communications data and transmitting that data via a single portable input module data transmission cable, (b) a relay module for receiving the communications data from the plurality of portable input modules via each of the single portable input module's data transmission cables and for transmitting that data via a single relay module data transmission cable, and (c) a communications output station for receiving the communications data from the relay module via the single relay module data transmission cable and for translating that data into user recognizable video, audio and radiation dosimeter data output forms.Type: GrantFiled: January 29, 1999Date of Patent: January 15, 2002Assignee: Southern California EdisonInventors: Richard Warnock, Robert Corbett