Abstract
The cold spray test of water spray fire extinguishing system, compressed air foam cannon fire extinguishing system and combined fire extinguishing test were carried out based on a scaled platform. The cold spray test results show that most of the water spray will be directly incorporated into the compressed air foam, and the defoaming effect of the water spray on the compressed air foam is limited. The combined fire extinguishing test shows that the water spray fire extinguishing system and the compressed air foam fire extinguishing system can achieve effective fire extinguishing under different fire extinguishing sequence conditions, and the two fire extinguishing systems can be used simultaneously in dealing with transformer oil fire. The comprehensive cooling effect of the dual system is better than that of a single system. Combining the actual characteristics and requirements of the converter station, a combination strategy of fire extinguishing system that suitable for the converter station is further proposed.
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