Ac short-circuit ice-melting control method and ice-melting distribution transformer

An alternative current (AC) short-circuit ice-melting control method, comprising:

• obtaining environmental parameters and equipment parameters of an ice-melting line, where the environmental parameters comprise temperature, humidity, a wind speed, and an ice thickness, and the equipment parameters comprise a rated capacity and a power factor of an ice-melting transformer, and a number of temperature sensors;
• based on the environmental parameters and the equipment parameters, using a deep reinforcement learning model to calculate an optimal ice-melting power gear and ice-melting time;
• based on the optimal ice-melting power gear and the ice-melting time, controlling an output voltage and a switch sequence of the ice-melting transformer, where the switch sequence comprises action sequences of a boundary switch, an ice-melting switch, a protection switch, and a short-circuit switch;
• calculating a temperature rise sensitivity coefficient, which is obtained based on a division of load rate scenarios and a calculation of temperature fluctuation of the ice-melting transformer in seven operating days;
• wherein operation data of the ice-melting transformer in seven operating days is divided into six load rate scenarios according to [0.20%], (20%,40%], (40%,60%], (60%,80%], (80%,100%], and 100%, and the temperature rise sensitivity coefficient under each scenario is calculated based on a relationship between a power fluctuation value and a temperature fluctuation value;
• based on the temperature rise sensitivity coefficient, real-time monitoring a current value during an ice-melting process;
• when the current value reaches a preset ice-melting current demand value, maintaining a current voltage gear;
• and
• when the current value does not reach the preset ice-melting current demand value, adjusting the current voltage gear until a requirement is met.