Influences of ±800 kV Yunnan-Guangdong HVDC System on Security and Stability of China Southern Power Grid

Baorong Zhou, Xiaoming Jin, Chao Hong, Pei Zhang, Zhigang Wu

Electric Power Research Institute of China Southern Power Grid, Guangzhou, China.
South China University of Technology, Guangzhou, China.
Tianjin University, Tianjin, China.

DOI: 10.4236/epe.2013.54B233                

Abstract

The interaction mechanism between AC and DC systems in a hybrid AC-DC transmission grid is discussed with PSS/E software. Analysis shows that receiving-end AC faults may cause much more damage on the HVDC system operation than the sending-end AC faults in a multi-infeed HVDC system, and the damage severity depends on the power recovering rate of the HVDC systems. For HVDC systems with slow power recovering rate, the receiving-end AC faults may probably be a critical factor to constrain power transfer limits. Larger capacity of HVDC system means not only higher power transfer-limit of the parallel connected AC-DC transmission grid, but also more expensive stabilizing cost.

Keywords

HVDC; Security; Stability; AC/DC; Power System; Interaction

Conflicts of Interest

The authors declare no conflicts of interest.

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