| Title |
An Overload Alleviation Algorithm by Line Switching |
| Keywords |
선로과부하해소 ; 선로절환 ; 선로개방분배계수 ; 스파스 모선리액턴스행열 Line Overload Alleviation ; Line Switching ; Line Outage Distribution Factors ; Sparse Bus Reactance matrix |
| Abstract |
This paper presents a new algorithm for the countermeasure to alleviate the line overloads due to contingency without shedding loads in a power system. This method for relieving the line overloads by line switching is based on obtaining the kine outage distribution factors-the linear sensitivity factors, which give the amount of change in the power flow of each line due to the removal of a line in a power system. There factors are made up of the elements of sparse bus reactance matrix and brach reactances. In this paper a fast algorithm and program is presented for obtaining only the required bus reactance elements which corresponds to a non-zero elements of bus admittance matrix, and elements of columns which correspond to two terminal buses of the overloaded(monitored) line. The proposed algorithm has been validated in tests on a 6-bus and the 30-bus test system. |