Effectiveness Test and Evaluation of Transformer Fire Extinguishing System

With 110 kV oil-immersed transformer as the platform, in this paper, we build a full-scale test platform covering 6 fire extinguishing (fire control) methods and different extinguishing agents, which is available for transformer fire extinguishing tests consistent with actual fire conditions. Through a transformer fire extinguishing test consistent with the real situation, we can draw that the efficiencies of different fire extinguishing methods from high to low are: fire monitor, foam fire extinguishing system (column type), water spray fire extinguishing system, foam fire extinguishing system (pipe network type), water mist fire extinguishing system, oil discharge and nitrogen injection system; Based on simulation calculations and full-scale test results, we evaluate the effectiveness of the transformer fire extinguishing systems by using the combined weight method and taking into overall consideration of factors such as fire extinguishing effect, fire extinguishing cost, system reliability, environmental protection, etc.. It is concluded that the recommended fire extinguishing methods for oil-immersed transformers from superior to inferior are in the sequences of: fire monitor system with oil-emulsified extinguishing agent, foam system with oil-emulsified extinguishing agent (column type), water spray system with oil-emulsified extinguishing agent, foam system (pipe network type), water mist system with foam extinguishing agent, oil discharge and nitrogen injection system. The conclusion provides a reference for the selection of fire extinguishing methods for oil-immersed transformers.