The results of laboratory experiment and filed operation indicated that the system operated stably and could credibly evaluate the insulation state of DC feeder cable.

• 实验室试验及现场运行结果表明综合监测直流泄漏电流和直流放电信号能够较好及时地诊断出电缆故障,研制的系统稳定、可靠,能够评估直流电缆绝缘状况。