Message from the Guest Editor-in-Chief

Recently,major energy consuming countries around the world have put forward specific carbon peak and carbon neutralization targets,and there is a promotion trend in energy cleaning and electrification.Many international research institutes predict that by 2050,electricity will account for 50% of global end-use energy consumption,while the renewable energy generation accounting for 85% of total electric power generation.Therefore,ensuring the safe and stable operation of the power system in the energy transition process is a prerequisite and basis for ensuring that carbon emission targets can be achieved.

Wind power and photovoltaic power generation are the most important power supplies in the future,but they are characterized by randomness,volatility and poor anti-interference,which bring great challenges to both the source and network side of the new power system.It is necessary to enhance the new energy consumption capacity through reasonable power supply planning,different network forms and new power market patterns,and then to improve the operation and control capacity of the power grid through flexible control strategies,artificial intelligence,optimization theory,energy internet and other technologies.Finally,to realize the safe and stable operation of power system with high penetration of the renewable energies.

In view of the above trends,the Journal of Global Energy Interconnection has organized a special issue entitled “Renewable Energy and Sustainable Development”.This issue contains 10 articles from power grid companies,leading research institutions and universities,including State Grid Corporation of China,Hong Kong Polytechnic University,China Electric Power Research Institute,Shandong University,University of International Business and Economics,and Dalian University of Technology.The above-mentioned articles mainly cover the areas of low-carbon power system planning,operation and control of power grids containing large-scale renewable energy,and energy internet.

This special issue covers a variety of topics.First,the impact of new energy integration is analyzed from the perspective of static voltage control and optimal system operation based on the characteristics of wind power and photovoltaic power generation.Then,the sourcegrid cooperative disaster prevention planning,low-carbon power system power planning,and HVDC transmission control strategies considering the intermittency of new energy sources are discussed from the perspective of renewable energy power planning.Finally,the economics of power heating,architecture design of the power internet of things and heterogeneous energy trading technologies are analyzed from the power market perspective.

We believe that this special issue and the presented papers will help to promote the exploration and understanding of future power systems containing high penetration of renewable energy sources,thus facilitating the sustainable development of energy cleaning translation and energy electrification.

Hengxu Zhang

Hengxu Zhang,professor,doctoral supervisor,is the executive deputy dean of the School of Electrical Engineering,Shandong University and the director of the Key Laboratory of Power Grid Intelligent Dispatching and Control,the director of the National Joint Engineering Lab of Electric Vehicle Integrating Grid Technology.He got his Ph.D degree from Shandong University (with Academician Xue Yusheng)in Dec.2003,and from then on,he has been engaged in the teaching and research of power system operation and control at Shandong University.His research interest includes power system stability and control,power system monitoring and energy transformation and low-carbon electric power system.

Hongzheng Liu

Hongzheng Liu,professorate senior engineer,State Council Expert for Special Allowance,is the vice director of the State Grid Shandong Electric Power Research Institute,director of Shandong Province Key Laboratory of Extra High Voltage Power Transmission Technology and Equipment,the Ninth Standing Committee of Shandong Provincial Science and Technology Association,a member of the Party Committee and Vice President of the Academy of Electrical Sciences.He has led two national key scientific research tasks,and won more than ten Provincial Science and Technology Awards.His research interests include transmission and substation equipment operation analysis,high voltage insulation technology and power enterprise management.