Yanbo Chen, Yuan Yao, Yuzhang Lin, 等. Dynamic state estimation for integrated electricity-gas systems based on Kalman filter[J]. 中国电机工程学会电力与能源系统学报(英文), 2022,8(1):293-303.
Yanbo Chen, Yuan Yao, Yuzhang Lin, et al. Dynamic state estimation for integrated electricity-gas systems based on Kalman filter[J]. CSEE Journal of Power and Energy Systems, 2022, 8(1): 293-303.
Yanbo Chen, Yuan Yao, Yuzhang Lin, 等. Dynamic state estimation for integrated electricity-gas systems based on Kalman filter[J]. 中国电机工程学会电力与能源系统学报(英文), 2022,8(1):293-303.DOI: 10.17775/CSEEJPES.2020.02050.
Yanbo Chen, Yuan Yao, Yuzhang Lin, et al. Dynamic state estimation for integrated electricity-gas systems based on Kalman filter[J]. CSEE Journal of Power and Energy Systems, 2022, 8(1): 293-303.DOI: 10.17775/CSEEJPES.2020.02050.
Dynamic state estimation for integrated electricity-gas systems based on Kalman filter
摘要
Abstract
In recent years
integrated electricity-gas systems (IEGSs) have attracted widespread attention. The unified scheduling and control of the IEGS depends on high-precision operating data. To this end
it is necessary to establish an appropriate state estimation (SE) model for IEGS to filter the raw measured data. Considering that power systems and natural gas systems have different time scales and sampling periods
this paper proposes a dynamic state estimation (DSE) method based on a Kalman filter that can consider the dynamic characteristics of natural gas pipelines. First
the standardized state transition equations for the gas system are developed by applying the finite difference method to the partial differential equations (PDEs) of the gas system; then the DSE model for IEGS is formulated based on a Kalman filter; also
the measurements from the electricity system and the gas system with different sampling periods are fused to ensure the observability of DSE by using the interpolation method. The IEEE 39-bus electricity system and the 18-nodes Belgium gas system are integrated as the test systems. Simulation results verify the proposed method's accuracy and calculation efficiency.