Title :
Transient instability control based on the transient angular velocity at control time
Author :
Huaiyuan Wang ; Baohui Zhang ; Songhao Yang ; Dezhi Chen ; Shiying Ma
Author_Institution :
Sch. of Electr. Eng., Xi´an Jiaotong Univ., Xi´an, China
Abstract :
Based on the analysis of trajectory geometric features, the slope of unstable phase trajectory gradually increases with angle. To stabilize the unstable trajectory, control imposed need to meet the slope of track continuing smaller in front of the power balance point. Accordingly an approximate calculation method of the minimum control quantity is proposed based on the phase trajectory slope at control time and power balance point, and also an approximate calculation method of power balance point is given according to the measured information. As an example of SMIB system, the validity of the theory is verified.
Keywords :
approximation theory; power system transient stability; SMIB system; approximate calculation method; minimum control quantity; phase trajectory slope; power balance point; power system; trajectory geometric feature analysis; trajectory stabilization; transient angular velocity; transient instability control; Power system stability; Stability analysis; Trajectory; Transient analysis; calculation of the control quantity; phase trajectory convexity; phase trajectory slope; power systems;
Conference_Titel :
Control and Decision Conference (CCDC), 2015 27th Chinese
Conference_Location :
Qingdao
Print_ISBN :
978-1-4799-7016-2
DOI :
10.1109/CCDC.2015.7161939
