TY - GEN
T1 - Impact of primary frequency droop coefficients on lyapunov stability of linearized asynchronous AC-MTDC system
AU - Vennelaganti, Sai Gopal
AU - Chaudhuri, Nilanjan Ray
N1 - Funding Information:
This work was supported by funding from NSF Award ECCS 1656983.
Publisher Copyright:
© 2020 IEEE.
PY - 2020/8/2
Y1 - 2020/8/2
N2 - In this paper, requirement on frequency droop coefficients for the stability of AC-MTDC system is studied. Two models, each with a certain level of modeling detail are employed. One is a simplified Nth-order model and the other is detailed full-order model. Using the Nth-order model, stability boundaries for several cases are numerically constructed in the space of frequency droop coefficients. Based on observation made form these boundaries, necessary and sufficient condition for stability is hypothesized. The 'Stability Hypothesis' is then proved for a couple of specific cases using Lyapunov method. Finally, the detailed model is used to validated the hypothesis in a practical setup through time-domain simulations.
AB - In this paper, requirement on frequency droop coefficients for the stability of AC-MTDC system is studied. Two models, each with a certain level of modeling detail are employed. One is a simplified Nth-order model and the other is detailed full-order model. Using the Nth-order model, stability boundaries for several cases are numerically constructed in the space of frequency droop coefficients. Based on observation made form these boundaries, necessary and sufficient condition for stability is hypothesized. The 'Stability Hypothesis' is then proved for a couple of specific cases using Lyapunov method. Finally, the detailed model is used to validated the hypothesis in a practical setup through time-domain simulations.
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U2 - 10.1109/PESGM41954.2020.9281582
DO - 10.1109/PESGM41954.2020.9281582
M3 - Conference contribution
AN - SCOPUS:85099163023
T3 - IEEE Power and Energy Society General Meeting
BT - 2020 IEEE Power and Energy Society General Meeting, PESGM 2020
PB - IEEE Computer Society
T2 - 2020 IEEE Power and Energy Society General Meeting, PESGM 2020
Y2 - 2 August 2020 through 6 August 2020
ER -