Toward smarter current relays for power grids

Author

Zhang, Yi ; Prica, Marija ; Ilic, Marija D. ; Tonguz, Ozan K.

Author_Institution

Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA

fYear

0

fDate

0-0 0

Abstract

As the power systems in the United States become increasingly large, complex, and interconnected, the traditional relays are proving to be inadequate against blackouts. More "intelligent" relays are therefore needed to meet the security and reliability needs of the future power grid. In this paper, we propose a new logic for decision making and over-current relay setting. The proposed "smart" over-current relays can: 1) decide current settings with a new and more comprehensive logic; 2) use new technologies such as phasor measurement unit (PMU) and/or Global Positioning System (GPS) to improve decision making; and 3) establish communications between relays to get real-time information

Keywords

Global Positioning System; decision making; overcurrent protection; phase measurement; power system faults; power system interconnection; power system relaying; power system reliability; power system security; relay protection; GPS; Global Positioning System; PMU; United States; intelligent relays; making; over-current relay setting; phasor measurement unit; power grid reliability; power grid security; power grids; smarter current relays; Decision making; Global Positioning System; Logic; Phasor measurement units; Power grids; Power system interconnection; Power system relaying; Power system reliability; Power system security; Relays;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering Society General Meeting, 2006. IEEE

Conference_Location

Montreal, Que.

Print_ISBN

1-4244-0493-2

Type

conf

DOI

10.1109/PES.2006.1709580

Filename

1709580