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


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.

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B. Zhou, X. Jin, C. Hong, P. Zhang and Z. Wu, "Influences of ±800 kV Yunnan-Guangdong HVDC System on Security and Stability of China Southern Power Grid," Energy and Power Engineering, Vol. 5 No. 4B, 2013, pp. 1230-1234. doi: 10.4236/epe.2013.54B233.

Conflicts of Interest

The authors declare no conflicts of interest.


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