Abstract
In order to solve the problem that the coupling between converter stations and the uncertainty caused by parameter perturbation in VSC-MTDC system have adverse effects on the stability of the system, this paper applies the neural network internal model control to the VSC-MTDC. Neural network is used to construct internal model and internal model controller, in addition, a feedback controller is added to the control system to cope with the problem of poor control effect caused by insufficient training of the neural network internal model and the neural network internal model controller in the early stage of the control system. Finally, simulation verification in MATLAB/SIMULINK shows that the neural network internal model control can not only weaken the coupling between the converter stations, but also can well deal with the uncertainty caused by the parameter perturbation of the control system.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
Tang, G.F., He, Z.Y., and Pang, H., Research, application and development of flexible DC transmission engineering technology, Autom. Electr. Power Syst., 2013, vol. 37, no. 15, pp. 3–14.
Xu, Z., Xue, Y.L., and Zhang, Z.R., Key technologies and prospects of large capacity overhead line flexible DC transmission, Proc. CSEE, 2014, vol. 34, no. 29, pp. 5051–5062.
Guo, C.Y., Zhao, C.Y., Montanari, A, et al., Characteristics of hybrid bipolar HVDC transmission system, Proc. CSEE, 2012, vol. 32, no. 10, pp. 98–104.
Li, S., Wang, Z.X., Wang, G.Q., et al., PID neural network sliding mode control of three-level offshore wind power flexible DC transmission converters, Proc. CSEE, 2012, vol. 32, no. 4, pp. 20–28.
Fallah, M., Kojabadi, H.M., and Blaabjerg, F., New control method for VSC-MTDC stations in the abnormal conditions of power system, Control Eng. Pract., 2020, vol. 96, p. 104316. https://doi.org/10.1016/j.conengprac.2020.104316
Fan, X.M., Guan, L., He, J.M., et al., Passive decoupling control of flexible DC transmission with wind power connected, J. Electrotech. Eng., 2013, vol. 28, no. 10, pp. 311–219.
Cao, F.M., Zhang, X.Y., Si, Z., et al., Three current decoupling control strategies and comparison of VSC-HVDC system in single rotation coordinate system, High Voltage Technol., 2016, vol. 42, no. 1, pp. 63–71.
Fu, X.F., Zhou, K.L., Cheng, M., et al., The deadbeat decoupling control strategy of VSC-HVDC for grid connection of wind farms, J. Electr. Eng. Technol., 2009, vol. 24, no. 11, pp. 157–154.
Chen, Q., Li, C., Jin, Y.Q., et al., Optimization of controller parameters based on grid-connected VSC decoupling model, High Voltage Technol., 2014, vol. 40, no. 8, pp. 2478–2484.
Guo, L., Zhang, Y.M., and Li, X.Y., Performance analysis of VSC-MTDC based on three-degree-of-freedom internal model decoupling control, Electr. Meas. Instrum., 2015, vol. 52, no. 16, pp. 54–60.
Li, Z., Hao, Q.R., Wang, S.Y., et al., Research on MMC nonlinear decoupling control based on accurate linearization of state feedback, Chin. J. Electr. Eng., 2019, vol. 39, no. 12, pp. 3646–3659.
Shao, B.B. and Zhao, S.Q., Power coupling characteristics and decoupling strategy of VSC-HVDC system connected to weak AC grid, Power Syst. Technol., 2019, vol. 43, no. 12, pp. 4532–4540.
Yi, H., Xiaoru, W., Feng, S., and Dalin, C., Control strategy based on sliding mode variable-structure control of VSC-MTDC transmission system, in IEEE PES Asia-Pacific Power and Energy Engineering Conf. (APPEEC), Xi’an, China, 2016, IEEE, 2016, pp. 586–593. https://doi.org/10.1109/APPEEC.2016.7779572
Wang, J., Wang, P., Zagrodnik, M., Mukherjee, S. and Vaidya, D., A modulation reference compensation method to realize fully decoupled power control for modular multilevel converters, IEEE Trans. Power Electron., 2019, vol. 34, no. 8, pp. 7230–7241. https://doi.org/10.1109/TPEL.2018.2879989
Wang, J. and Wang, P., Decoupled power control for direct-modulation-based modular multilevel converter with improved stability, IEEE Trans. Ind. Electron., 2019, vol. 66, no. 7, pp. 5264–5274. https://doi.org/10.1109/TIE.2018.2870352
Yu, Y., Liu, K.P., Yang, J., and Chen, J., Small-signal model and decoupling control of a multi-terminal hybrid DC transmission system supplying passive networks, Proc. CSEE, 2016, vol. 36, no. 1, pp. 76–86.
Yu, Y., Li, H. L., Chen, Q.J., Tian, Y., Xu, L.C., et al., Design of robust decoupling controller between stations in flexible DC transmission system, High Voltage Technol., 2020, vol. 46, no. 5, pp. 1700–1709.
Zhao, Z.C. and Wen, X.Y., Internal Model Control and Its Application, Electronic Industry Press, 2012.
Chu, Y.C., Huang, S.D., Kong, F.P., et al., MMC-HVDC steady state control based on internal model controller, Power Syst. Technol., 2015, vol. 39, no. 8, pp. 2223–2229.
Funding
This work was supported by the Key Research and Development Project of Gansu Province (18YF1GA056).
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
The authors declare no conflict of interest.
About this article
Cite this article
Weiwei Zou, Dong, H., Liu, K. et al. Neural Network Internal Model Control of VSC-MTDC. Aut. Control Comp. Sci. 55, 419–430 (2021). https://doi.org/10.3103/S0146411621050084
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.3103/S0146411621050084