1. Department of Electrical and Computer Engineering, Wayne State University, Detroit, MI 48202 USA (e-mail: cwang@wayne.edu).
2. Northern Indiana Public Service Company, Merrillville, IN 46410 USA (e-mail: ywang@nisource.com).
3. Department of Electrical and Computer Engineering, Wayne State University, Detroit, MI 48202 USA (e-mail: gj9598@wayne.edu).
4. Department of Civil and Environmental Engineering, Wayne State University, Detroit, MI 48202 USA (e-mail: cmiller@eng.wayne.edu).