Title :
A fast simulation method for mid-term voltage stability
Author :
Yanhong, Bao ; Taishan, Xu ; Yusheng, Xue
Author_Institution :
Nanjing Autom. Res. Inst., China
Abstract :
Based on the quasi-static-state (QSS) approximation, a fast simulation method for mid-term voltage stability is discussed in this paper. Since dynamics on mid-term voltage stability are slow by nature, QSS approximation is adopted to neglect transient dynamic details and find voltage evolution through obtaining a sequence of transient equilibrium points. A new control technique for the simulation step is proposed to speed up the simulation. The continuation power flow method is adapted with the ratios of on-load tap changers (OLTC) as the control parameters whenever numerical divergence is likely to happen. The very dishonest Newton method is applied to reducing the factorization time. Simulations on a real-life system fully confirm the effectiveness of the novel method.
Keywords :
Newton method; approximation theory; control system analysis; load flow control; on load tap changers; power system control; power system dynamic stability; continuation power flow method; factorization time; fast simulation method; mid-term voltage stability; on-load tap changers; quasi-static-state approximation; simulation step control; transient equilibrium points; very dishonest Newton method; Automation; Dynamic voltage scaling; Electronic mail; Equations; Power system dynamics; Power system modeling; Power system simulation; Power system stability; Power system transients; Voltage control;
Conference_Titel :
Power System Technology, 2002. Proceedings. PowerCon 2002. International Conference on
Print_ISBN :
0-7803-7459-2
DOI :
10.1109/ICPST.2002.1047519
