Key Technologies, Systems, and Applications for Multi-Energy Flow Integrated Energy Management
Integrated Energy Systems (IES) incorporating electricity, gas, heating, and cooling represent a pivotal technological pathway for achieving carbon peaking and carbon neutrality goals. Historically, ineffective coordination among diverse energy vectors led to frequent cross-system cascading failures, constrained renewable energy integration, and limited comprehensive efficiency—constituting major technical barriers to IES development. Over the past decade, Professor Sun Hongbin's team at Tsinghua University's Energy Management and Control Research Center pioneered transformative advances: establishing the Energy Circuit Theory for multi-energy flow modeling, inventing key cross-vector coordination technologies, and developing the world's first scalable Integrated Energy Management System (IEMS) that serves as the "intelligent control center" for IES operations. Deployed across smart cities and low-carbon industrial parks, this innovation ensures secure, efficient, and sustainable multi-energy system performance—with the project "Key Technologies, Systems, and Applications for Multi-Energy Flow Integrated Energy Management" honored with the First Prize of Beijing Technological Invention Award.
Key Technologies and Applications for Flexible VSC-HVDC Transmission of Utility-Scale Renewable Energy
VSC-HVDC transmission, enabling long-distance delivery of utility-scale renewable energy, bidirectional power flow, and flexible power flow control, has emerged as a strategic national technology priority. High-voltage DC circuit breakers (DCCBs)—critical equipment for constructing VSC-HVDC systems—remained an unsolved global challenge in electrical engineering for over a century.
Professor Zeng Rong and Associate Professor Yu Zhanqing from Tsinghua’s DC Research Center led their team in a decade-long pioneering effort that achieved breakthroughs across core devices, key technologies, and major equipment. Their development of the world’s highest-voltage and highest-capacity 535kV/25kA DCCB was deployed in the Zhangbei VSC-HVDC Grid Project, delivering 100% clean power for the Beijing Winter Olympics and establishing global leadership in high-voltage DC interruption technology. The project "Key Technologies and Applications for Flexible VSC-HVDC Transmission of Utility-Scale Renewable Energy" was awarded the First Prize of Beijing Science and Technology Progress Award.
