TY - GEN
T1 - A unified preventive control approach considering voltage instability and thermal overload
AU - Fu, Xu
AU - Wang, Xifan
PY - 2007
Y1 - 2007
N2 - This paper presents a unified preventive control approach considering voltage instability and thermal overload. Firstly, a new concept of generalized loading margin (GLM) is proposed. By using GLM, contingency and load increase scenario are represented using a unified parameter, and the unsolvable contingencies are treated the same as the solvable contingencies. Then, we discuss the use of a general optimal power flow (OPF), in which the GLM constraints are added. If the GLM of the current system under a given set of contingencies are insufficient, the sensitivity of GLM with respect to control actions is calculated, and a linear programming (LP)-based OPF algorithm is performed to determine the preventive control strategy. Several algorithms including a two step method to calculate GLM are proposed to improve the calculation speed. Among the possible controls, emphasis is put on generation rescheduling and load shedding. Case studies are presented on a real 682 bus system. The results prove that this method is efficient.
AB - This paper presents a unified preventive control approach considering voltage instability and thermal overload. Firstly, a new concept of generalized loading margin (GLM) is proposed. By using GLM, contingency and load increase scenario are represented using a unified parameter, and the unsolvable contingencies are treated the same as the solvable contingencies. Then, we discuss the use of a general optimal power flow (OPF), in which the GLM constraints are added. If the GLM of the current system under a given set of contingencies are insufficient, the sensitivity of GLM with respect to control actions is calculated, and a linear programming (LP)-based OPF algorithm is performed to determine the preventive control strategy. Several algorithms including a two step method to calculate GLM are proposed to improve the calculation speed. Among the possible controls, emphasis is put on generation rescheduling and load shedding. Case studies are presented on a real 682 bus system. The results prove that this method is efficient.
KW - Contingency analysis
KW - Generalized loading margin (GLM)
KW - Linear programming (LP)
KW - Overload
KW - Preventive control
KW - Voltage stability
UR - https://www.scopus.com/pages/publications/42549162338
U2 - 10.1109/PES.2007.385522
DO - 10.1109/PES.2007.385522
M3 - 会议稿件
AN - SCOPUS:42549162338
SN - 1424412986
SN - 9781424412983
T3 - 2007 IEEE Power Engineering Society General Meeting, PES
BT - 2007 IEEE Power Engineering Society General Meeting, PES
T2 - 2007 IEEE Power Engineering Society General Meeting, PES
Y2 - 24 June 2007 through 28 June 2007
ER -