Vol.119, No.4, 2022, pp.1517-1529, doi:10.32604/ee.2022.019646
OPEN ACCESS
ARTICLE
Kalman-Filtering-Based Frequency Control Strategy Considering Electrolytic Aluminum Load
  • Yuqin Chen, Shihai Yang*, Yueping Kong, Mingming Chen
Marketing Service Center, State Grid Jiangsu Electric Power Co., Ltd., Nanjing, 210004, China
* Corresponding Author: Shihai Yang. Email:
(This article belongs to this Special Issue: Key Technologies of Renewable Energy Consumption and Optimal Operation under "Dual Carbon Targets")
Received 05 October 2021; Accepted 27 October 2021; Issue published 23 May 2022
Abstract
Traditional thermal power units are continuously replaced by renewable energies, of which fluctuations and intermittence impose pressure on the frequency stability of the power system. Electrolytic aluminum load (EAL) accounts for large amount of the local electric loads in some areas. The participation of EAL in local frequency control has huge application prospects. However, the controller design of EAL is difficult due to the measurement noise of the system frequency and the nonlinear dynamics of the EAL’s electric power consumption. Focusing on this problem, this paper proposes a control strategy for EAL to participate in the frequency control. For the controller design of the EAL system, the system frequency response model is established and the EAL transfer function model is developed based on the equivalent circuit of EAL. For the problem of load-side frequency measurement error, the frequency estimation method based on Kalman-filtering is designed. To improve the performance of EAL in the frequency control, a fuzzy EAL controller is designed. The testing examples show that the designed Kalman-filter has good performance in de-noising the measured frequency, and the designed fuzzy controller has better performance in stabilizing system frequency than traditional methods.
Keywords
Electrolytic aluminum load; kalman-filtering; frequency control
Cite This Article
Chen, Y., Yang, S., Kong, Y., Chen, M. (2022). Kalman-Filtering-Based Frequency Control Strategy Considering Electrolytic Aluminum Load. Energy Engineering, 119(4), 1517–1529.
This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.