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This paper analyzes the optimal problems of dc-segmentation for multi-infeed HVDC systems based on stability performance and studies the selecting method for the optimal dc-segmentation scheme. First, three major stability problems of multiinfeed HVDC systems are pointed out, which implies the necessity of the optimization for dc-segmentation. Second, three typical evaluation indices which correspond...
This paper presents a new method based on piecewise analytical formulas to evaluate the valve losses of the modular multilevel converter based high-voltage direct current (MMC-HVDC) transmission systems. According to the generating mechanism, the total valve losses of the MMC are divided into three parts: conduction losses, essential switching losses, and additional switching losses. Due to the large...
The rapid growth of Chinese economy leads to fast development of electric power industry, which greatly promotes higher education on electrical engineering and the research and development (R&D) on power systems in China. In the meantime, the Ministry of Science & Technology of China (MSTC) and the National Natural Science Foundation of China (NSFC) play an important role in planning and supporting...
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