Recently, the leading journal Proceedings of the IEEE (Impact Factor 10.25) published a 26-page research article "Multienergy Networks Analytics: Standardized Modeling, Optimization, and Low Carbon Analysis" written by the Smart Energy Laboratory of EEA. The first author of this article is Huang Wujing, a doctoral student of EEA and the communication authors are Professor Kang Chongqing and Associate Professor Zhang Ning of EEA.

The Proceedings of the IEEE journal implements an article invitation system. In this volume under the theme of "Multi-Carrier Energy Systems", 14 scientific research teams around the world were invited to provide contributions, which will be collected and published as a special edit. Professor Kang Chongqing and Associate Professor Zhang Ning's team of the Smart Energy Laboratory of EEA is the only Chinese scientific research team invited this time. The co-editor of this edit on multi-energy systems is Professor Michael Chertkov, a senior expert in integrated energy systems and a fellow of the American Physical Society from Los Alamos National Laboratory and Professor G枚ran Andersson, founder of the Energy Hub concept, from Swiss Federal Institute of Technology Zurich. Also invited for this special edit are the Academician Mark O'Malley's team from the US National Renewable Energy Laboratory, Professor Pierluigi Mancarella's team from the University of Melbourne, Professor Roy Smith's team from the Federal Institute of Technology Zurich, Professor Antonio J. Conejo's team from Ohio State University, Professor Pascal Van Hentenryak's team from the Georgia Institute of Technology, and Nikolai N. Novitsky's team from the Institute of Energy Systems of Merentiev, Siberian Branch of the Russian Academy of Sciences, etc.

A multi-energy system can make use of the coupling between multiple energy sources to enhance the flexibility of the energy system, further improve the overall energy efficiency, and promote the consumption of renewable energy. The long article from the Smart Energy Laboratory of EEA discusses how to standardize the modeling, operation, planning optimization and carbon emission flow analysis of a multi-energy system from the point of view of network analysis theory.

In this paper, the multi-energy network is divided into two levels, namely: 1) regional multi-energy networks focusing on energy conversion in small geographical regions, such as industrial parks and communities; 2) a cross-regional multi-energy network focusing on energy transmission in a large geographical area, such as a big city, a province, or a country, etc. This article first analyzes the standardized modeling method for a multi-energy network, including: 1) the energy hub model for a regional energy network, which introduces the standardized modeling method for an energy hub based on the graph theory, realizes the computer assisted automatic modeling of the steady-state energy flow of a regional integrated energy system, and discusses how to describe the nonlinear energy conversion relationship in energy hub with the matrix modeling method; 2) the network model of a cross-regional energy network, which introduces the generalized circuit analysis theory of power, thermal and gas networks, deeply analyzes how to study equivalent model for the dynamic process of a heat and gas network and its external ports with Laplace transform and the power network analysis theory; 3) an electricity, heat and gas load forecasting model. Secondly, it discusses the planning and operation methods of regional and cross-regional energy networks, respectively. Then it introduces the carbon emission flow model in the multi-energy network, which is used to accurately analyze the equivalent carbon emissions of all kinds of terminal energy associated with the energy flow, and analyzes how the carbon emission flow promotes carbon reduction in the planning and operation of the multi-energy network. Finally, this article looks into the future research in the field of multi-energy networks, including toughness analysis, topology identification and model aggregation.

As one of the three representative achievements of the Joint Research Institute of Tsinghua University - State Grid New Generation Power System, the above research achievement was exchanged online at the "State Grid Science and Technology Lecture Hall" of the State Grid on August 5 and watched by thousands of people through online live broadcast of the State Grid University, and the lecture produced a strong response.

Proceedings of the IEEE is the leading journal (Impact Factor 10.25 in 2020) to provide in-depth review, survey, and tutorial coverage of the technical developments in electronics, electrical engineering, and computer science.

Article link: https://ieexplore. Ieee. Org/document/9113254 (W. Huang, N. Zhang, Y. Cheng, J. Yang, Y. Wang and C. Kang, "Multienergy Networks Analytics: Standardized Modeling, Optimization, and Low Carbon Analysis," in Proceedings of the IEEE, doi: 10.1109JPROC. 2020.2993787.)