TY - JOUR
T1 - Determination of reactive power compensation considering largedisturbances for power flow solvability in the Korean power system
AU - Seo, Sangsoo
AU - Kang, Sang Gyun
AU - Lee, Byongjun
AU - Kim, Tae Kyun
AU - Song, Hwachang
PY - 2011/3
Y1 - 2011/3
N2 - This paper proposes a methodology using a tool based on the branch-parameter continuation power flow (BCPF) in order to restore the power flow solvability in unsolvable contingencies. A specified contingency from a set of transmission line contingencies is modeled, considering the transient analysis and practice in the Korean power system. This tool traces a solution path that satisfies the power flow equations with respect to the variation of the branch parameter. At a critical point, in which the branch parameter can move on to a maximum value, a sensitivity analysis with a normal vector is performed to identify the most effective compensation. With the sensitivity information, the location of the reactive power compensation is determined and the effectiveness of the sensitivity information is verified to restore the solvability. In the simulation, the proposed framework is then applied to the Korean power system.
AB - This paper proposes a methodology using a tool based on the branch-parameter continuation power flow (BCPF) in order to restore the power flow solvability in unsolvable contingencies. A specified contingency from a set of transmission line contingencies is modeled, considering the transient analysis and practice in the Korean power system. This tool traces a solution path that satisfies the power flow equations with respect to the variation of the branch parameter. At a critical point, in which the branch parameter can move on to a maximum value, a sensitivity analysis with a normal vector is performed to identify the most effective compensation. With the sensitivity information, the location of the reactive power compensation is determined and the effectiveness of the sensitivity information is verified to restore the solvability. In the simulation, the proposed framework is then applied to the Korean power system.
KW - Korean power systems
KW - Power flow solvability
KW - Reactive power compensation
KW - Sensitivity analysis
KW - Transient analysis
UR - http://www.scopus.com/inward/record.url?scp=79952856590&partnerID=8YFLogxK
U2 - 10.5370/JEET.2011.6.2.147
DO - 10.5370/JEET.2011.6.2.147
M3 - Article
AN - SCOPUS:79952856590
SN - 1975-0102
VL - 6
SP - 147
EP - 153
JO - Journal of Electrical Engineering and Technology
JF - Journal of Electrical Engineering and Technology
IS - 2
ER -