Siemens Aktiengesellschaft

Tsinghua University

Alstom Technology Limited

Nxtphase T&d Corporation

Areva T&d UK Limited

Schneider Electric Energy UK Ltd.

Andrzej Klimek

Tao Cui

James N Blake

Farnoosh Rahmatian

Xinzhou Dong

Waldemar Rebizant

Cataldo Diaferia

Frédéric Leclerc

Yves Doin

Andrzej Wiszniewski

Ray Chatfield

Zhiqian Bo

Xuyang Li

Krzysztof Solak

Andrzej Juszczyk

The invention concerns a method and a system for online ferroresonance detection in a high voltage electrical distribution network. The method includes:

Method and system for online ferroresonance detection

A method of monitoring voltage stability within an electrical power system comprises the steps of establishing a dynamic power system stability margin based on an operating characteristic of the power system; indicating that the power system has become unstable when the dynamic power system stability margin falls below a predetermined value; and initiating dynamic load shedding and/or restoration depending on stability margin.

Method of determining voltage stability margin for load shedding within an electrical power system

An optical sensor configuration contains an optical current sensor and/or an optical voltage sensor. The sensor configuration further contains a first and a second hollow member, preferably ring shaped profiles, which are together disposed to form a hollow section. The sensor configuration further includes an optical fiber of the current sensor disposed in an annular groove, the groove being disposed at the boundary surface between the first hollow member and the second hollow member, and/or an optical fiber of the voltage sensor is disposed in a recess of the second hollow member. The first hollow member has an annular recess into which the second hollow member is disposed whereas the first hollow member is an L-shaped or U-shaped ring with two legs and the recess is formed between the two legs.

Optical sensor arrangement for electrical switchgear

Growing community of inventors

Surrey, Canada

Andrzej Klimek