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High Voltage Switchgear Partial Discharge Summary and discharge signal analysis
Author(s): 
Pages: 161-163
Year: Issue:  12
Journal: Automation & Instrumentation

Keyword:  SwitchgearInsulation defectsPartial dischargeDetection;
Abstract: 高压开关柜在制造和运行过程中难免发生绝缘缺陷问题,主要缺陷类型表现为以下方面:内、外绝缘面对地闪络击穿,电压相间绝缘闪络击穿,雷电危害过压闪络击穿,绝缘件接地不良、断裂等造成的闪络击穿.同时,这些绝缘缺陷在最终发生击穿之前都伴有局部放电现象,通过检测局部放电的强弱就可以及时地了解绝缘状态,因此,通过在线检测局部放电信号可以准确地判断绝缘状态,实现电气设备的安全可靠运行.
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