| Title |
Determination of Reasonable Amounts of Under-Voltage Load Shedding for 765kV T/L According to the Power System Reliability Standards |
| Authors |
유제호(Yoo, Je-Ho) ; 허진(Hur, Jin) ; 차준민(Cha, Jun-Min) ; 김태균(Kim, Tae-Gyun) ; 강부일(Kang, Bu-Il) ; 조수환(Cho, Soo-Hwan) |
| DOI |
https://doi.org/10.5370/KIEE.2015.64.6.845 |
| Keywords |
Load shedding ; UVLS(Under-Voltage Load Shedding) ; Contingencies ; SPS(Special Protection System) ; Reliability |
| Abstract |
Load shedding is a last measure to avoid nationwide cascading collapses of power system by removing the pre-determined amount of loads from the main grid. In Korea, SPS(Special Protection System) is prepared to keep the power system stability from the extreme contingency of the critical transmission line losses. Among them, we need to pay attention to 765kV T/L’s because they have great influence on the total system stability. According to the present SPS operating guide, the total loads of 1,500MW should be removed through 2 step under-voltage load shedding(UVLS) scheme in case of 765kV T/L’s contingencies. However, it is not clear to defined how to determine the typical load reduction amounts for each case. This paper proposes a method to estimate appropriate amounts of load shed for 765kV T/L’s contingencies by analyzing the relevant national and international standards. |