Microgrid System and Its Optimization Algorithms Chun Yuan Ning 1 , Jun Jie Shang 1 , Thi Xuan Huong Nguyen 2 , Duc Tinh Pham 3,4 1 Fujian Provincial Key Laboratory of Big Data Mining and Applications, Fujian University of Technology, Fujian Province 350118, China 2 Haiphong University of Management and Technology, Haiphong, Vietnam 3 Center of Information Technology, Hanoi University of Industry, Hanoi, Vietnam; 4 Graduate University of Science and Technology, Vietnam Academy of Science and Tec[.]