On-line partial discharge (OLPD) insulation condition monitoring of complete high voltage (HV) networks in the oil & gas industry

L. Renforth, A. Burgess, Marc Foxall, Thomas Raczy
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引用次数: 6

Abstract

The authors describe a new approach to on-line partial discharge (OLPD) insulation condition monitoring (CM) of complete high voltage (HV) networks (voltage range: 3.3 kV to 132 kV) in the oil & gas industry. The technique described is suitable for the condition monitoring of HV generators, switchgear, cables, motors and transformers. Comprehensive HV network OLPD condition monitoring coverage is achieved through the use of wideband, OLPD sensors and continuous monitors located at the central switchboards of the facility. The complete HV network condition monitoring system described in this paper is an extension of a CM system originally developed by the authors for remote OLPD monitoring of the stator winding condition of Ex/ATEX HV motors operating in hazardous gas zones. This technique utilises wideband, high frequency current transformer (HFCT) OLPD sensors located at the central HV switchboards to detect partial discharge (PD) signals that originate in remotely-connected HV plant and have propagated down the cable feeder circuit to the switchgear. This remote monitoring technique was presented by the lead author at the IEEE-PCIC 2012 [1] and IEEE-PCIC 2013 [2] for the application of OLPD condition monitoring of EX/ATEX HV motors, whilst avoiding the need to install sensors in the hazardous gas zone. In this paper, the authors describe how this remote OLPD monitoring technique can be extended to include the insulation condition monitoring of other HV assets including; generators, switchgear, cables and transformers, using the same wideband HFCT sensors attached to the HV cable terminations located at the central switchboards. The authors provide a number of case studies describing some past projects on the OLPD testing and monitoring of in-service HV generators, switchgear, cables, motors and transformers within the oil & gas industry. The applications knowledge obtained from these past projects on different plant types has been used by the authors in the development of this innovative, complete HV network condition monitoring solution.
油气行业高压(HV)电网局部放电(OLPD)绝缘状态在线监测
介绍了一种针对石油天然气行业高压(HV)电网(电压范围3.3 ~ 132 kV)的局部放电(OLPD)绝缘状态在线监测(CM)的新方法。该技术适用于高压发电机、开关设备、电缆、电动机和变压器的状态监测。通过使用位于设施中央配电盘的宽带、OLPD传感器和连续监视器,实现了全面的高压网络OLPD状态监测覆盖。本文描述的完整高压网络状态监测系统是作者最初开发的CM系统的扩展,该系统用于远程OLPD监测在危险气体区运行的Ex/ATEX高压电动机的定子绕组状态。该技术利用位于中央高压配电板的宽带高频电流互感器(HFCT) OLPD传感器来检测源自远程连接的高压设备并沿电缆馈线电路传播到开关设备的局部放电(PD)信号。这种远程监测技术由主要作者在IEEE-PCIC 2012[1]和IEEE-PCIC 2013[2]上提出,用于EX/ATEX高压电机的OLPD状态监测,同时避免了在危险气体区安装传感器的需要。在本文中,作者描述了如何将这种远程OLPD监测技术扩展到包括其他高压资产的绝缘状态监测,包括;发电机,开关设备,电缆和变压器,使用相同的宽带HFCT传感器连接到位于中央配电盘的高压电缆终端。作者提供了一些案例研究,描述了过去在石油和天然气行业中使用的高压发电机、开关设备、电缆、电机和变压器的OLPD测试和监测项目。作者在开发这一创新的、完整的高压网络状态监测解决方案时,利用了从过去不同电厂类型的项目中获得的应用知识。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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