摘要
State estimation(SE)usually serves as the basic function of the energy management system(EMS).In this paper,the time-scale characteristics of the integrated heat and electricity networks are studied and an SE model is established.Then,a two-stage iterative algorithm is proposed to estimate the time delay of heat power transportation in the pipeline.Meanwhile,to accommodate the measuring resolutions of the integrated network,a hybrid SE approach is developed based on the two-stage iterative algorithm.Results show that,in both steady and dynamic processes,the two-stage estimator has good accuracy and convergence.The hybrid estimator has good performance on tracking the variation of the states in the heating network,even when the available measurements are limited.
基金
supported by the National Natural Science Foundation of China(NSFC)(No.51537006)
the China Postdoctoral Science Foundation(No.2019M650675)
作者简介
Tongtian Sheng received the B.S.degree from the Department of Electrical Engineering,Huazhong University of Science and Technology,Wuhan,China,in 2013,and the Ph.D.degree from the Department of Electrical Engineering,Tsinghua University,Beijing,China,in 2018.He is current an engineer with National Electric Power Dispatching and Control Center of State Grid Corporation of China,Beijing,China.His research interests include integrated energy systems,energy management and control.e-mail:sheng-tongtian@sgcc.com.cn;Guanxiong Yin received the B.S.degree from the Electrical Engineering Department,Tsinghua University,Beijing,China,in 2018.He joined the State Key Laboratory of Power Systems of Tsinghua University in 2018,where he is currently working toward the Ph.D.degree.His research interests include integrated energy systems,energy management and energy internet.e-mail:1790994753@qq.com;Qinglai Guo received the B.S.degree from the Department of Electrical Engineering,Tsinghua University,Beijing,China,in 2000.He received his Ph.D.degree from Tsinghua University in 2005 where he is now an associate professor.He is a member of CIGRE C2.13 Task Force on Voltage/Var Support in System Operations.His research interests include smart grids,cyberphysical systems and electrical power control center applications.e-mail:guoqinglai@tsinghua.edu.cn;Corresponding author:Hongbin Sun received his double B.S.degrees in Tsinghua University,Beijing,China,in 1992,and the Ph.D degree from the Department of Electrical Engineering,Tsinghua University in 1997.He is now Changjiang Scholar Chair Professor of Education Ministry of China,tenured full professor of electrical engineering and the director of Energy Management and Control Research Center in Tsinghua University.From Sept.2007 to Sept.2008,he was a visiting professor with School of EECS at the Washington State University,Pullman,USA.He is a Fellow of IEEE and IET.He is serving as a chair of IEEE smart grid voltage control task force and IEEE Energy Internet working group.He served as the founding Chair of IEEE Conference on Energy Internet and Energy System Integration in Nov.2017.In recent 20 years,he led a research group in Tsinghua University to develop a commercial system-wide automatic voltage control system,which has been applied to more than 100 electrical power control centers in China as well as the control center of PJM interconnection,the largest regional power grid in USA.He published more than 300 peer-reviewed papers.He won the China National Technology Innovation Award in 2008,the National Distinguished Teacher Award in China in 2009,and the National Science Fund for Distinguished Young Scholars of China in 2010.His research interests include energy management system,automatic voltage control,Energy Internet and energy system integration.e-mail:shb@tsinghua.edu.cn;Zhaoguang Pan received the B.S.and Ph.D.degrees from the Department of Electrical Engineering,Tsinghua University,Beijing,China,in 2013 and 2018,respectively.He is current a Post Doctor with Department of Electrical Engineering,Tsinghua University.His research interests include integrated energy systems,energy management and energy internet.e-mail:panzhaoguang@tsinghua.edu.cn
