Feifei Bai, Yong Liu, Yilu Liu, 等. A measurement-based approach for powersystem instability early warning[J]. 现代电力系统保护与控制(英文), 2016,1(1).
Feifei Bai, Yong Liu, Yilu Liu, et al. A measurement-based approach for powersystem instability early warning[J]. Protection and Control of Modern Power Systems, 2016, 1(1).
Feifei Bai, Yong Liu, Yilu Liu, 等. A measurement-based approach for powersystem instability early warning[J]. 现代电力系统保护与控制(英文), 2016,1(1).DOI: 10.1186/s41601-016-0014-0.
Feifei Bai, Yong Liu, Yilu Liu, et al. A measurement-based approach for powersystem instability early warning[J]. Protection and Control of Modern Power Systems, 2016, 1(1).DOI: 10.1186/s41601-016-0014-0.
A measurement-based approach for powersystem instability early warning
Early warning of impending instability in a power system under disturbance conditions is important for preventing of system collapse. A measurement-based approach is proposed to assess the potential power system transient instability problem under cascading outages. Where a measurement-based index is obtained as the estimation accuracy of a linear autoregressive exogenous (ARX) model to estimate the dynamic response of the power system and indicate the system stability to some extent after a disturbance. The proposed approach was verified using a set of marginally stable cases in a 179-bus WECC equivalent power system. Then the instability early warning threshold for this system is obtained as 0.44.
Abstract
Early warning of impending instability in a power system under disturbance conditions is important for preventing of system collapse. A measurement-based approach is proposed to assess the potential power system transient instability problem under cascading outages. Where a measurement-based index is obtained as the estimation accuracy of a linear autoregressive exogenous (ARX) model to estimate the dynamic response of the power system and indicate the system stability to some extent after a disturbance. The proposed approach was verified using a set of marginally stable cases in a 179-bus WECC equivalent power system. Then the instability early warning threshold for this system is obtained as 0.44.