Partial discharge sensor and energy harvesting for high voltage bushing condition monitoring

能够监测高压设备中使用的套管的状况对电力系统的长期可靠性具有重要意义。在很长一段时间内，套管绝缘材料可能由于表面污染或由于暴露于高场强应力而产生的缺陷而降解。绝缘体击穿可能导致灾难性故障、停电和潜在的危险情况。Power HV Inc.**生产高压套管，并开发了一个监测套管运行状况的传感器平台**。Power HV和曼尼托巴大学的G. Bridges博士将开始合作开发一种瞬态接地电压传感器，用于测量由于套管绝缘体故障引起的局部放电场。传感器**将连接到传感器平台，传感器平台将对部分放电信号进行采样并无线传输到远程服务器进行处理。传感器平台将位于高压设备上，但为了提供长期远程操作而没有危险的人为干预，需要一个无电池电源。为了解决这个问题，研究小组将开发一种基于电感线圈的能量收集方案，该方案直接从套管电流产生的磁场中收集能量。远程监控能力将大大提高电力设备的安全性和长期可靠性，并为**电力公司提供独特的能力，从而提高其产品的适销性。

Being able to monitor the condition of bushings used in high voltage apparatus is important for long-term**power system reliability. Over long periods, bushing insulation material can degrade due to surface**contamination or defects that develop due to stresses from exposure to high field strengths. Insulator**breakdown can lead to catastrophic failure, power outage, and potentially hazardous conditions. Power HV Inc.**manufactures high voltage bushings and has developed a sensor platform for monitoring bushing operating**condition. Power HV and Dr. G. Bridges at the University of Manitoba will initiate a partnership to develop a**transient earth voltage sensor for measuring partial discharge fields due to bushing insulator faults. The sensor**will be connected to the sensor platform which will sample and wirelessly transmit the partial discharge signals**to a remote server for processing. The sensor platform will be located on the high voltage apparatus, but in**order to provide long-term remote operation without hazardous human intervention, a batteryless source of**power is required. To address this the research team will develop an inductive coil-based energy harvesting**scheme which directly harvests power from the magnetic field generated by the bushing current. The remote**monitoring capability will greatly improve the safety and long-term reliability of power apparatus and provide**Power HV with a unique capability that will enhance the marketability of their products.