Abb Research Ltd.

Abb Power Td & Company

Le Tang

Mohamed Y Haj-Maharsi

Jiuping Pan

Reynaldo Nuqui

Sandeep Bala

Mirrasoul Mousavi

Zhenyuan Wang

Xiaoming Feng

David Lubkeman

Yi Hu

Ernst Scholtz

Rafael Gutierrez

Richard E Tyner

Richard E Brown

Giuliano Guerra

Carl-Ejnar S&ouml;lver

Harry G Mathews

Lan Trinh

Marta Lacorte

Andre Osterholt

Hans-Erik Olovsson

Krassimir G Koutlev

Antonio C Carvalho

Anil Pahwa

Mohamed Yassine Haj-Maharsi

Fault interrupting devices and methods for controlling the same are disclosed. The fault interrupting devices may include a switch on an electrical power line and a controller configured to operate the switch. The methods for controlling fault interrupting devices may include gathering data, determining from the data that a fault has occurred, opening the fault interrupting device to interrupt the fault, analyzing the data, and determining whether the fault interrupting device can be reclosed based at least partially on the analysis of the data.

Fault interrupting devices and control methods therefor

A hybrid transformer is provided that includes an electromagnetic transformer and an AC-AC converter with a DC bridge. The AC-AC converter is operable to keep the input voltage and current of the hybrid transformer substantially in phase and to reduce fluctuation in the output voltage of the hybrid transformer in the event of an increase or decrease in the input voltage.

Hybrid distribution transformer having a power electronic module for controlling input power factor and output voltage

A method is disclosed for preventing malicious settings changes to IEDs in a power transmission and distribution network. Attempted changes to the protection settings of an IED is detected and transmitted to one or more neighboring IEDs. The neighboring IEDs check for consistency of the new settings and return conformance or nonconformance signals. If a nonconformance signal is received, the attempted setting change is not allowed.

Collaborative defense of energy distribution protection and control devices

A hybrid distribution transformer is provided that includes an electromagnetic transformer and a voltage source converter that is operable to reduce fluctuation in the output voltage of the hybrid distribution transformer in the event of an increase or decrease in the input voltage.

Hybrid distribution transformer with an integrated voltage source converter

A wireless secondary assembly is disclosed for use in an electrical distribution network. The secondary assembly may include a wireless source electrically connected to a first electric cable and adapted to emit an electromagnetic power signal. A wireless receiver is electrically connected to a secondary device and adapted to receive the electromagnetic power signal and convert the electromagnetic power signal to electricity to power to secondary device.

Wirelessly powered secondary electrical distribution equipment

A systematic approach is presented for the development and implementation of cost-effective transmission asset maintenance strategies. The overall concept and methodology are based on transmission reliability and risk management and address the value of preventive maintenance activities. This may help electric network utilities conduct maintenance policy assessment, region-wide criticality analysis, and optimal maintenance resource allocation and task scheduling.

Value-based transmission asset maintenance management of electric power networks

A computer implemented method uses a database of detailed, comprehensive utility operating and financial information. The method comprises: () feature based matching or similarity based benchmark and focus group selection; () a performance assessment procedure comprising multi-perspective analysis; and () multi-attribute business profiling and performance improvement potential analysis. As part of the performance assessment step, data corresponding to different utilities in a selected benchmark group are compared with each other to find their strengths and weaknesses. Interpretation of these gaps provides the cause of such gaps. Composite ranking analysis is used so that a composite score of at least one utility business is obtained.

Method for evaluation of energy utilities

Reliability assessment of a power system having an integrated component is provided by retrieving individual component failure rates associated with individual components of the integrated component. A failure time is modeled based on the individual component failure rates associated with individual components of the integrated component. Individual component maintenance times are retrieved associated with individual components of the integrated component. A maintenance time is modeled based on the individual component maintenance times associated with individual components of the integrated component. A reliability assessment is determined based on the interconnectivity of components of the power system, the modeled maintenance times, and the modeled failure times.

System and method for reliability assessment of a power system having integrated modules

A method and system for preventing sustained resonance conditions in a power system involves measuring voltage and current samples on a conductor to which a plurality of controlled capacitors are operatively coupled. The measured voltage and/or current is utilized to identify a resonance condition. The method or system determines whether the resonance condition is due to switching of a controlled capacitor and, if so a corrective switching operation is performed after a first time delay. If the resonance condition is determined not to be due to the switching of a capacitor, then a second switching operation, in which a second controlled capacitor is switched after a second time delay, is performed. The second time delay is preferably greater than the first time delay.

Harmonic resonance control and protection system for switched power factor control capacitor devices

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Cary, NC, United States of America

Le Tang