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Analysis of hidden dangers on motor valve of main circulating loop in HVDC valve cooling systems
Author(s): 
Pages: 44-47
Year: Issue:  6
Journal: Hunan Electric Power

Keyword:  converter stationvalve cooling systemmotor valvehidden dangersDC block;
Abstract: Taking the example of the valve cooling system at Echeng converter station, by analyzing the control logic of motor valve in the main circulating loop, the hidden dangers that may cause DC system block are pointed out in the paper. Countermeasures are presented to avoid potential DC system block due to motor valve faults and ensure the safe operation of the converter station. Recommendations on the future design of the valve cooling system for the new converter station are given and can be used as reference for other converter stations.
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