1. Hunan National Center for Applied Mathematics, Xiangtan University, Xiangtan, China
2. Department of Mathematics and Computational Science, Xiangtan University, Xiangtan, China
3. Hunan Engineering Research Center for Multi-Energy Cooperative Control Technology, Xiangtan University, Xiangtan, China
4. Department of Automation, Tsinghua University, Beijing, China
5. School of Automation and Electronic Information, Xiangtan University, Xiangtan, China