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Influences of ±800 kV Yunnan-Guangdong HVDC System on Security and Stability of China Southern Power Grid
Electric Power Research Institute of China Southern Power Grid, Guangzhou, China
Electric Power Research Institute of China Southern Power Grid, Guangzhou, China
Electric Power Research Institute of China Southern Power Grid, Guangzhou, China
Tianjin University, Tianjin, China
South China University of Technology, Guangzhou, China
- 1 Electric Power Research Institute of China Southern Power Grid, Guangzhou, China
- 2 Electric Power Research Institute of China Southern Power Grid, Guangzhou, China
- 3 Electric Power Research Institute of China Southern Power Grid, Guangzhou, China
- 4 Tianjin University, Tianjin, China
- 5 South China University of Technology, Guangzhou, China
Energy and Power Engineering·Volume 05 (2013)·Pages 1230–1234·Published 30 June 2013·DOI10.4236/epe.2013.54B233
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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.
KeywordsHVDCSecurityStabilityAC/DCPower SystemInteraction
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