On April 7, the initialization ceremony of “Key Technologies for Self-adaptive Grid Incorporation and Active Synchronization of Highly Penetrating Distributed Photovoltaic Power Generation”, a project (2022YFB2402900) in the National Major R&D Program, with Professor Wu Wenchuan from the Department of Electrical Engineering and Applied Electronics (EEA), Tsinghua University as the project leader, was successfully held in Linyi City, Shandong Province. This ceremony was hosted by State Grid Shandong Electric Power Company, the leading unit of the project. Experts and leaders including Academician Guo Jianbo of the Chinese Academy of Engineering, Commissioner Zhang Zhaohua of the Industry Development Promotion Center of the Ministry of Industry and Information Technology, Dean Wen Jinyu of Huazhong University of Science and Technology, and Dean Dong Xuzhu of Wuhan University attended the meeting. Professor Wu Wenchuan gave a detailed introduction to the project implementation plan and management methods. Sun Shumin, a professorate senior engineer from State Grid Shandong Electric Power Company, reported on the engineering demonstration implementation plan. The attending experts gave high praise and affirmation, and put forward constructive suggestions.

At the project initialization meeting

The meeting was chaired by Li Xueliang, Director of the Science and Technology Department of State Grid Shandong Electric Power Company, and Sun Gang, Chief Engineer of State Grid Shandong Electric Power Company, delivered a welcome speech. The project consulting expert group is composed of Academician Guo Jianbo of the Chinese Academy of Engineering, Professor Ju Ping, former executive vice president of Hohai University, Dean Wen Jinyu of Huazhong University of Science and Technology, Dean Dong Xuzhu of Wuhan University, Deputy General Manager Yao Weizheng of Mingyang Smart Energy Group Co., Ltd., Shi Yan, Professorate Senior Engineering of State Grid and Deputy Chief Engineer of State Grid Institute of Economy and Technology, Deputy Director Ma Shicong of China Electric Power Research Institute Co., Ltd., Professor Yan Zheng of Shanghai Jiao Tong University, Researcher Pei Wei of Electric Power Research Institute of Chinese Academy of Sciences, Vice Dean Wang Jinsong of North China Electric Power Test Research Institute of Datang Group, and Director Engineer Yi Yang of Huawei Technologies. More than 100 people, including Zhang Zhaohua, Commissioner of Special Project Office III of the Industry Development Promotion Center of the Ministry of Industry and Information Technology, Zhou Jun, Director of the Technology Department of State Grid Corporation of China, Han Shaohua, Director of the Department of Science and Technology of Shandong Province, and heads and core members of the project team from project undertaking units (including State Grid Shandong Electric Power Co., Ltd., Tsinghua University, China Electric Power Research Institute Co., Ltd., State Grid Intelligent Power Research Institute Co., Ltd. Nari Technology Co., Ltd., Institute of Electrical Engineering of the Chinese Academy of Sciences, North China Electric Power University, Shandong University, TBEA Sunoasis Co., Ltd., Huadian Shandong New Energy Co., Ltd.), participated in the meeting.

Project team representatives took a group photo with experts and leaders

At the meeting, Sun Gang delivered a speech on behalf of the leading unit of the project, saying that State Grid Shandong Electric Power will manage the whole process, guarantee all elements and provide all-round services with high standards, continuously strengthen communication and cooperation with the project executing unit, accelerate joint research and development, firmly promote project research, promote the construction of demonstration projects in high quality, and achieve the set goals in high standards. Zhang Zhaohua, on behalf of the Industry Development Promotion Center of the Ministry of Industry and Information Technology, emphasized that the project occupies a very important and special position in the key special project of “Energy Storage and Smart Grid Technology” introduced in the “14th Five-Year Plan”, and all units involved should strengthen communication and cooperation with advantaged enterprises to ensure the promotion and implementation of technology research and development. Zhou Jun, on behalf of the Technology Department of the State Grid Corporation of China, hoped that the State Grid Shandong Electric Power Company could provide advanced experience in large-scale projects that can be referenced and replicated for units carrying out national major R&D projects in the national grid system.

Speech by the project leader

Wu Wenchuan, starting from the new technological requirements brought by the explosive growth of distributed photovoltaic power generation and focusing on solving the key scientific and technological problems of adaptive grid incorporation and source-grid interaction mechanism of highly penetrable distributed photovoltaic power generation and constructing the overall goal of the project’s digital support technology system of “equipment adaptation + active cluster support + wide-area collaborative optimization”, provided a detailed introduction of the project implementation plan, expected results, organizational management methods, and existing work progress. Sun Shumin, focusing on the problems and challenges brought by the large-scale development of distributed photovoltaic in Shandong Province and combining with the current situation of the demonstration area, provided a detailed introduction of the technical demonstration implementation plan of the project, and gives the technical demonstration investment scale calculation results and the quantity, quality and schedule of the technical demonstration.

The expert group gave high praise to the composition of the “industry, university, research and application” integrated research and development team and the selection of typical engineering demonstration locations, fully affirmed the overall goal of the project and the low-cost feasibility and universality of the overall implementation technology route for the construction and transformation of highly penetrable distributed photovoltaic grid-incorporated distribution systems, and highly recognized its technological breakthrough significance and socio-economic value for the construction of new distribution systems. The responsible expert introduced in detail the initial intention of the Project Manual and the continuation background of “photovoltaic poverty alleviation construction”, emphasizing that each project participating unit should enhance the sense of honor, mission and social responsibility of scientific research work, work together to overcome key technologies, focus on the source-grid interaction problems brought by extremely high penetration rate photovoltaic access, carry out targeted technical research and development, build an open technical architecture, fully utilize their respective technical advantages, actively promote project research and development and application process, provide strong support for China to break through the technical bottleneck of “friendly and active support for distributed photovoltaic clusters and grid incorporation, and effectively implement the results, and the demonstration application units should carry out their work solidly and seriously to ensure that the engineering demonstration is implemented according to plan.

At the end of the meeting, Wu Wenchuan and Sun Gang jointly said on behalf of the project team that they will fully digest and absorb the opinions and suggestions put forward by the experts, and will make every effort to do well in the scientific research and organizational implementation of the project in the future, striving to make great breakthroughs.

Project outline:

Distributed photovoltaic power generation plays an increasingly important role in building a “clean, low-carbon, safe and efficient” energy system. Traditional photovoltaic inverters are poor in anti-interference, insufficient in active support to the power grid, difficult to control system voltage and frequency, and facing problems such as islanding, oscillating and power quality degrading; distributed photovoltaic power generation is random in output, difficult in consumption and with high operational risks, and grid-incorporated distributed photovoltaic power generation may lead to a qualitative change in the operation characteristics of the regional power grid and the source-grid interaction mechanism under extremely high penetration rates. Therefore, there is an urgent need to conduct systematic research in perception, communication, prediction, control and scheduling. In response to the challenges of high-penetration distributed photovoltaic power generation and grid operation, the project will aim at the technical requirements of highly penetrating distributed photovoltaic power generation, make breakthroughs in intelligent perception, trustworthy transmission, power prediction, self-adaptive control, cluster autonomy, active synchronization, and wide-area collaborative control of distributed photovoltaic power generation, propose intelligent perception and safe and reliable transmission technology for public and special mixed grids, solve the difficulties of self-adaptive grid incorporation and cluster collaboration support for distributed photovoltaic power generation, establish a risk-quantified wide-area collaborative control theory, and develop an operation control system which is self-adaptive, cluster-autonomous and wide-area collaborative, and demonstrate its application to ensure grid security and improve active support capabilities, power quality and absorption level.