In order to guarantee safe operations, low energy discharge within gas insulated switchgear （GIS） should be detected as soon as possible before they develop severely and cause final breakdown failures. This paper ai...In order to guarantee safe operations, low energy discharge within gas insulated switchgear （GIS） should be detected as soon as possible before they develop severely and cause final breakdown failures. This paper aims to present a GIS discharge diagnosis technique adopting gaseous decompositions. To reach this aim, needle-plate electrode and the sphere-plate electrode with metallic particles on the plate are designed to simulate two kinds of low energy discharge, namely, corona discharge and spark discharge, respectively. After sampling and analyzing the gases, different yields of gaseous by-products under different types of low energy discharge are obtained. Based on the decomposition mechanisms reported by previous researches and the experiment results, it can be concluded that S2OF10, SO2F2 , and SO2 can be used as the characteristic gas to identify low energy discharge; the increment of S2OF10 can indicate the occurrence of low energy discharges while the volume ratio between SO2F2 and SO2 can define the type of low energy discharge.展开更多
SF6分解物一直是人们研究的重要课题,为明确型号为PASS MOO DBB(HGIS)的72.5 k V PASS内SF6分解物异常原因,以实际运行中的72.5 k V PASS在检测中发现分解物异常为例,详细介绍了设备的异常情况及异常处理过程,并通过理论计算验证了推断...SF6分解物一直是人们研究的重要课题,为明确型号为PASS MOO DBB(HGIS)的72.5 k V PASS内SF6分解物异常原因,以实际运行中的72.5 k V PASS在检测中发现分解物异常为例,详细介绍了设备的异常情况及异常处理过程,并通过理论计算验证了推断的有效性,并给出了该异常情况的处理措施及预防措施。展开更多
介绍罗盘式(COMPASS)组合电器新型带电检测技术,分析超高频检测、超声波检测、SF6分解物检测及红外热像检测的原理和方法。通过一起110 k V COMPASS开关带电检测诊断和处理的应用案例,说明了在不停电状态下发现COMPASS组合电器内部故障...介绍罗盘式(COMPASS)组合电器新型带电检测技术,分析超高频检测、超声波检测、SF6分解物检测及红外热像检测的原理和方法。通过一起110 k V COMPASS开关带电检测诊断和处理的应用案例,说明了在不停电状态下发现COMPASS组合电器内部故障、有效监测设备状态、提高COMPASS组合电器的运行可靠性方面,带电检测技术有极为重要的意义。展开更多
随着GIS应用的日益广泛,其安全运行对整个电力系统的意义愈加重要,因而需要加强对其故障检测的研究。笔者通过对一起110 k V GIS设备的故障检测实例分析,综合运用各种故障检测方法,快速、准确地检测出了故障点,证明了提出的GIS设备的故...随着GIS应用的日益广泛,其安全运行对整个电力系统的意义愈加重要,因而需要加强对其故障检测的研究。笔者通过对一起110 k V GIS设备的故障检测实例分析,综合运用各种故障检测方法,快速、准确地检测出了故障点,证明了提出的GIS设备的故障判断步骤的正确性,对提高GIS设备的检修效率和设备利用率具有重要意义。展开更多
基金Supported by the Scotland-China Higher Education Research Partnership for Ph. D. Studies ([2010]6044)
文摘In order to guarantee safe operations, low energy discharge within gas insulated switchgear （GIS） should be detected as soon as possible before they develop severely and cause final breakdown failures. This paper aims to present a GIS discharge diagnosis technique adopting gaseous decompositions. To reach this aim, needle-plate electrode and the sphere-plate electrode with metallic particles on the plate are designed to simulate two kinds of low energy discharge, namely, corona discharge and spark discharge, respectively. After sampling and analyzing the gases, different yields of gaseous by-products under different types of low energy discharge are obtained. Based on the decomposition mechanisms reported by previous researches and the experiment results, it can be concluded that S2OF10, SO2F2 , and SO2 can be used as the characteristic gas to identify low energy discharge; the increment of S2OF10 can indicate the occurrence of low energy discharges while the volume ratio between SO2F2 and SO2 can define the type of low energy discharge.
文摘SF6分解物一直是人们研究的重要课题,为明确型号为PASS MOO DBB(HGIS)的72.5 k V PASS内SF6分解物异常原因,以实际运行中的72.5 k V PASS在检测中发现分解物异常为例,详细介绍了设备的异常情况及异常处理过程,并通过理论计算验证了推断的有效性,并给出了该异常情况的处理措施及预防措施。
文摘介绍罗盘式(COMPASS)组合电器新型带电检测技术,分析超高频检测、超声波检测、SF6分解物检测及红外热像检测的原理和方法。通过一起110 k V COMPASS开关带电检测诊断和处理的应用案例,说明了在不停电状态下发现COMPASS组合电器内部故障、有效监测设备状态、提高COMPASS组合电器的运行可靠性方面,带电检测技术有极为重要的意义。
文摘随着GIS应用的日益广泛,其安全运行对整个电力系统的意义愈加重要,因而需要加强对其故障检测的研究。笔者通过对一起110 k V GIS设备的故障检测实例分析,综合运用各种故障检测方法,快速、准确地检测出了故障点,证明了提出的GIS设备的故障判断步骤的正确性,对提高GIS设备的检修效率和设备利用率具有重要意义。
