Abb Technology Ag

Abb Research Ltd.

Mohamed Maharsi

James Stoupis

Mirrasoul Mousavi

Zhenyuan Wang

Vaibhav Deepak Donde

Fang Yang

Douglas A Voda

John McGowan

Deia Bayoumi

Mark C Giacobbe

Mirrasoul J Mousavi

Deia Salah-Eldin Bayoumi

Thomas G Sosinski

Douglas A Wood

Dela Salah-Eldin Sayoumi

Mark C Glacobbe

John J Mcgowan

A technique of monitoring a battery assembly may include monitoring a parameter associated with the battery assembly to obtain a number of monitored parameter samples. A temporal sequence of monotonically increasing values may be generated from the monitored parameter samples. The temporal sequence may be analyzed for an indication of a trend in the monitored parameter toward one of an upper operational boundary or a lower operational boundary to predict a fault condition of the battery assembly.

System and method for predictive maintenance of a battery assembly using temporal signal processing

A method of forecasting loads on a distribution network is disclosed. The method employs load profiles in combination with short-term load estimations to forecast expected loads on a distribution network. The predicted loads may then be used by power restoration controllers when performing back-feed capacity checks.

Short-term load forecasting based capacity check for automated power restoration of electric distribution networks

An arc suppression circuit in a protection relay having trip contacts is used to turn off a battery-powered solenoid and trip an AC power circuit breaker. The arc suppression circuit uses a switch-control circuit to control the turning off of a semi-conductor switch so that the semi-conductor switch provides a current path around the trip contacts, and is carrying all, or substantially all, of the load current, before the trip contacts are opened. When the trip contacts begin to open, the switch-control circuit holds the semi-conductor switch on for a sufficient time to prevent an arc from becoming established before turning the semi-conductor switch off. In a second embodiment, the arc suppression circuit provides a second switch-control circuit. This second switch-control circuit is configured to accept control signals from a microprocessor within a protection relay. The microprocessor turns the semi-conductor switch on before the contacts begin to open, thereby providing a current path around the contacts before the contacts begin to open. The microprocessor turns the semi-conductor switch off after a time sufficient to prevent an arc from becoming established.

Arc suppression circuit using a semi-conductor switch

A method and an apparatus for collecting data related to a status of an electrical power system, wherein data is continuously acquired from the electrical power system and is stored, at least temporarily, in a first volatile memory. Upon the occurrence of an event, the data stored in the first volatile memory is copied and permanently stored in a second non-volatile memory.

Method and apparatus for collecting data related to the status of an electrical power system

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Garner, NC, United States of America

Mohamed Maharsi