Safety monitoring method and device for thermal runaway of electrochemical energy storage system of power distribution network

The invention discloses a safety monitoring method and device for thermal runaway of an electrochemical energy storage system of a power distribution network, and the method comprises the steps: determining the state information of the electrochemical energy storage system according to the temperature information, pressure information, air humidity information, current information, voltage information and main gas concentration information of the electrochemical energy storage system; whether the electrochemical energy storage system has a thermal runaway risk or not is judged according to the state information of the electrochemical energy storage system, and the output power of the energy storage management system to the electrochemical energy storage system is controlled, so that the comprehensiveness of thermal runaway safety monitoring of the electrochemical energy storage system of the power distribution network is improved; the technical problems that an existing power distribution network electrochemi