35 kJ/7 kW直接冷却高温超导磁储能系统

介绍了直接冷却高温超导磁储能（SMES）系统（35kJ／7kW）的总体结构和基本试验结果。该系统主要由超导磁体、低温系统、功率调节系统和监控系统组成。实验结果表明，通过直接冷却将储能磁体成功冷却到了20K以下；储能磁体的直流临界电流达到150A，临界储能量84kJ，磁体中心场强4．5T；监控系统和变流器能控制SMES与系统快速独立地在四象限进行有功功率和无功功率交换；在电力系统动态模拟实验中，SMES能有效抑制电力系统中因发电机机端短路故障引起的功率振荡。

35 kJ/7 kW Conduction-cooled High TcSuperconducting Magnet Energy Storage

The basic components and the experiment of the first conduction-cooled high Tc superconducting magnetic energy storage (35 kJ/7 kW) in China is described. The SMES system is composed of superconducting magnet, cooling system, power conditioning system and monitored control system. The following conclusions can be achieved through the system experiment: the temperature of superconducting magnet could reach under 20 K; the critical current of superconducting magnet is 150 A, the maximum energy storage is 84 kJ, and the maximum central magnetic field is 4.5 T; monitored control system and power conditioning system can respond very rapidly to exchange active and reactive power independently in four quadrants with ac power system. In the dynamic simulated experiment of power system, the SMES can effectively damp the power oscillation due to the fault of line to ground at the generator terminal.