Analysis of Damping of Excitation System with Direct Current Energy

Cheng Chen ； Yiqiang Yang ； Xiaolin Su

《International Core Journal of Engineering》 7卷4期 (2021/04) Pp. 404-408

https://doi.org/10.6919/ICJE.202104_7(4).0054

摘要

In order to explain the mechanism of the excitation part of the low-frequency oscillation, an equivalent circuit of the generator excitation part is constructed based on the sixth-order model of the generator. Through the equivalent circuit of the excitation part of the generator, the energy flow of the excitation part of the generator is constructed. Through TLS-ESPRIT technique, DC power can be obtained. DC energy is obtained through DC power integration. The generator excitation part injects the positive and negative DC energy of the system to determine the positive or negative contribution of the excitation control system to the damping of the system oscillation. The simulation results verify the validity of the conclusions and lay the foundation for the direct current energy analysis of excitation damping from the equivalent circuit.

關鍵字

Sixth Order Generator Model ； Electrical Circuits ； DC Energy ； Damping

參考文獻

Xiaolin Su, Yiqiang Yang, Cheng Chen, Xueqin Zhu. Structure Preserving Energy Function of Power System Considering Generator Subtransient[J]. World Scientific Research Journal,2020,6(11).

CHEN Lei, MIN Yong, CHEN Yiping, et al. Evaluation of generator damping using oscillation energy dissipation and the connection with modal analysis [J]. IEEE Trans on Power Systems2014, 29 (3): 1393-4402.

Sun Z, Cai G, Yang D, et al. A Method for the Evaluation of Generator Damping During Low-Frequency Oscillations[J]. Power Systems, IEEE Transactions on, 2019, 34(1):109-119.

Sun Z, Cai G, Yang D, et al. Application of power system energy structures to track dominated oscillation paths and generator damping contribution during low-frequency oscillations[J]. International Journal of Electrical Power & Energy Systems, 2019, 104(JAN.):52-68.

YU Yiping, MIN Yong, CHEN Lei, et al. Disturbance sourcelocation of forced power oscillation using energy functions [J]. Automation of Electric Power Systems, 2010, 34 (5): 1-6