Water storage for HVDC thyristor valves cooling system topic 1–1.d. power system integration, packaging & thermal management. I

In order to ensure the HVDC convertor valve works properly, the heat produced from the valve must be dissipated into the atmosphere to keep the device within the normal temperature range. However, efficiency of the valve cooling system is affected by environment temperature. In water deficient areas, the traditional circulating water cooling tower is not normally adopted. And the heat dissipation capacity of the conventional water-air exchanger system is insufficient in summer as the ambient temperature is higher than 40oC. Therefore, a cold storage system combined with air cooling system was presented. This study and test show that the proposed cold storage system can maintain the temperature entering into the HVDC thyristor valve within the designed range.