A nonlinear excitation controller design method for terminal voltage regulation and transient stability enhancement

作者：Huang Chongxin; Zhang Kaifeng^*; Dai Xianzhong; Zang Qiang

来源：International Journal of Emerging Electric Power Systems, 2014, 15(3): 279-290.

DOI：10.1515/ijeeps-2013-0106

• Automatic voltage regulators
• Cascade control
• Coordination strategy
• Inverse system methods
• Nonlinear excitation controls
• Nonlinear power systems
• Stability enhancement
• Terminal voltage regulation

This paper proposes a cascade control method to design a nonlinear excitation controller to guarantee the terminal voltage regulation and the transient stability. Firstly, a nonlinear automatic voltage regulator (NAVR) in the inner loop is designed to control the terminal voltage exactly. Secondly, the generator model including the NAVR is transformed to be a reduced one. Subsequently, based on the reduced generator model, the nonlinear power system stabilizer in the external loop is designed to enhance the transient stability of the power systems. Furthermore, a coordination strategy is presented to improve the performances of the terminal voltage regulation in the steady state and the stability in the transient state. Finally, the proposed method is verified by numerous simulation results.

• 出版日期2014
• 单位东南大学; 南京大学