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China’s world-leading EMT simulation technology for large power grid delivers value

It has recently attracted wide attention that the wind and solar power from Zhangjiakou were transmitted to the venues of the Beijing Winter Olympics through Zhangbei VSC-HVDC Project, achieving 100% green power for all venues for the first time in the history of the Olympic Games. But what is less known is that the whole process of planning, construction and operation of the Zhangbei VSC-HVDC Project, with the highest voltage level and the largest transmission capacity of its kind in the world, is indispensable to the strong support of the power grid simulation technology.

At the State Grid Simulation Center of China Electric Power Research Institute (CEPRI), the more accurate and efficient electromagnetic transient (EMT) simulation technology are playing an increasingly important role in construction and operation of power grids, grid-connection support of new energy, and building of new power systems.

The unprecedented large-scale and high-complexity of power grids stimulates the simulation technology to keep on upgrading

The Zhangbei VSC-HVDC Project is a major technological trial demonstration project that combines friendly grid-connection of large-scale renewable energy, mutual complementation and flexible consumption among multiple forms of energy, and construction of DC power grids. In the absence of experience to learn from, the high-precision simulation is indispensable in the process of research, development, test commissioning, and grid-connection. “We have conducted more than 80,000 simulation computing under 5,800 working conditions for the Zhangbei VSC-HVDC Project and carried out all-around simulation analysis and experimental verification in terms of the project’s grid-connection characteristics, operation mode arrangements, control and protection strategies, and troubleshooting measures. As a result, the project was successfully put into operation and supplied green electricity for the Beijing Winter Olympics,” said Zhu Yiying, Director of the Digital-Analog Hybrid Simulation Research Office of State Grid Simulation Center.

As we all know, the power system is the most complex man-made dynamic system in the world and is the cornerstone for the functioning of modern society. As compared to systems such as highway and railway transportation, natural gas, water conservancy, and oil, it has the characteristics such as electric energy transmission at speed of light, real-time balance in the whole process from generation to consumption, and uninterruptability. Therefore, it demands extremely high safety and reliability. Simulation is not only a major means to learn about the characteristics of power grids, analyze planning schemes, work out control strategies, and verify precautions, but also a critical core technology in the power system. With the continuous increase of power systems in size and complexity, simulation technology has to keep on upgrading to meet the needs of the development of power systems.

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CEPRI research team is doing scientific research at State Grid Simulation Center.

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Supercomputing Center of State Grid Simulation Center, CEPRI

 


Post time: Apr-30-2022