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AssigneeSan Diego Gas & Electric Company C/O Sempra Energy
InventorGIROLAMO ROSSELLI
Estimating the term…
Systems and methods for adaptive distance protection are provided. An adaptive ground distance protection system may be installed in a power system to provide an accurate measurement of the apparent impedance of the transmission lines thereby ensuring reliable and stable operations of the power system. The potential of a system ground in reference to the remote earth is measured and used in calculating the apparent impedance of a transmission line. An accurate assessment of the apparent impedance of a transmission line is therefore provided and reduces the risk of misoperation of relays. Existing protection systems of a power system may be augmented, for example, via a retrofitting process, to enhance reliability of the power system, reduce costs, reduce customer service interruption, and expand opportunities for deployment.
A protection system configured to protect a power system comprising a transmission line, comprising:
An electrical power system, comprising
An adaptive distance protection method for protecting a power system comprising a transmission line, comprising:
The adaptive distance protection method of 15, wherein the apparent impedance of the transmission line is calculated according to
Dependencies are inferred from the claim text.