Shanghai Power Grid 35 kV kilometer -level superconducting cable completes large load test

On July 29, the relevant units affiliated to the State Grid Shanghai Electric Power Company organized a large -load test of superconducting cables. Through the large load operation of more than 1,000 in a row and 1,000, the maximum 1289 -way, it initially verified the superconducting cable with large load operation of large load operations. ability.

As of the end of July this year, the world's first 35 -kilometer -kilometer superconducting cable has continued to run continuously for more than 8 months, and the daily operating load is stable in the range of 700 to 800. Da Yu. In order to give full play to the capabilities of superconducting cable systems, inspect the running status of superconducting cables during the large load period, and evaluate the energy consumption level of the system, State Grid Shanghai Electric Power conducted this experiment during the peak of the peak summer load.

During the 9 -hour test, the operation data of the superconducting cable was normal and stable. It is understood that under daily operation, the load volume of superconducting cables is equivalent to 4 to 5 ordinary cables with the same voltage level. It is equivalent to 7 to 10 ordinary cables under large load operation. Large -capacity "transmission problem.

In order to ensure the successful development of the experiment, the lead unit Shanghai South Power Supply Company has compiled a detailed test plan and risk response measures to refine the monitoring parameters and personnel on duty. On the day of the experiment, the on -site special patrol personnel systematically recorded the voltage, current, and power data of the power supply power supply of the superconducting cable cooling system. Through data comparison, the loss of the system loss of the cooling system under large load was obtained, which provided parameters for further improving its operating economy. Base. At the same time, the company's cable professionals carry out dynamic temperature measurement on both sides of the superconducting cable, collect equipment thermal data at different loads and different environmental temperatures, draw temperature changes, and provide a reference for timely adjusting the power of the refrigeration system.

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