Abstract
State estimate is to use the redundancy of the real-time measurement system to improve data accuracy, automatically exclude the error message caused by random interference, and estimate or forecast the system state. It is also one of the core functions of the energy management systems. During the implementation of the energy management systems in the offshore oilfields power grid, we found that the number of measurements is not enough. The measurement is inaccurate and also there is too much current measurement in the protective relaying equipment. So this chapter introduces the node injection current as state vector, meanwhile simplifies the measurement equation of the system and enables the constraints linearization, which improves the convergence speed of the program. At the same time, the current in the protective relaying equipment is introduced into the measurements to ensure the system observability. At last, the examples demonstrate this program is also reliable while the system is in the split run.
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References
Schweppe FC, Wildes J (1970) Power system static-state estimation-I. IEEE Trans Power Appl Syst 89(1):120–125
Bin Wang, Wilsun Xu, Zhencun Pan (2005) Voltage sag state estimation for power distribution systems. IEEE Trans Power Syst 20(2):806–812
Liao H (2006) Power system harmonic state estimation via sparsity maximization. In: Proceedings of IEEE/Power Engineering Society General Meeting
Julier SJ, Uhlmann JK (2004) Unscented filtering and nonlinear estimation. Proc IEEE 92:401–422
Heydt GT (1989) Identification of harmonic sources by a state estimation technique. IEEE Trans Power Deliv 4:569
Meliopoulos PS, Zhang F, Zelingher S (1994) Power system harmonic state estimation. IEEE Trans Power Deliv 9:1701
Du ZP, Arrillaga J, Watson N (1996) Continuous harmonic state estimation of power systems. Proc IEEE Generation Transm Distrib 143:329
Yu KKC, Watson NR, Arrillaga J (2005) An adaptive Kalman filter for dynamic harmonic state estimation and harmonic injection tracking. IEEE Trans Power Deliv 20:1577
Ma H, Girgis AA (1996) Identification and tracking of harmonic sources in a power system using a Kalman filter. IEEE Trans Power Deliv 11:1659
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Sun, Y., Li, H., Wei, X., Xiao, S., Xie, X. (2014). A State Estimate Algorithm Based on Current Measurement for Offshore Oil Grid. In: Xing, S., Chen, S., Wei, Z., Xia, J. (eds) Unifying Electrical Engineering and Electronics Engineering. Lecture Notes in Electrical Engineering, vol 238. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-4981-2_37
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DOI: https://doi.org/10.1007/978-1-4614-4981-2_37
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