Patent ID: 6654216
Filing Date: 2003-11-25
Classification: H02H,H02J,Y02E,Y04S

Abstract:
A distributed monitoring and protection system for a distributed power network comprising:a plurality of lines for distributing electric power, the lines including protective devices, and at least two of the lines connected to different current nodes at different potentials, an individual monitoring unit for measuring electrical parameters coupled to each of at least two of the lines, at least two of the monitoring units measuring electrical parameters from different current nodes at different potentials, at least one control unit communicating remotely over a high-speed data network with each monitoring unit, at least one monitoring unit coupled to a protective device, the at least one control unit including a processor for (a) comparing in the control unit the measured electrical parameters of one respective monitoring unit with the measured electrical parameters of at least one other respective monitoring unit, and (b) producing in the control unit an activating signal based on the comparison of the measured electrical parameters of the one respective monitoring unit with the measured electrical parameters of the at least one other respective monitoring unit, and the control unit transmitting the activating signal to the at least one monitoring unit, and in response, the at least one monitoring unit producing a tripping signal for tripping the protective device.