固体绝缘开关柜在线检测技术

固体绝缘开关柜挂网运行过程中,其柜内的一次高压部件热功率很大,易导致局部过热,从而造成开关柜的短路故障。为了确保配电网的稳定、安全与可靠运行,提出了一种固体绝缘开关柜在线检测新技术。它首先获取开关柜关键部位的原始红外热图像数据,借助配电网电力多模通信接入切换装置将检测信息以230 Mesh（无线Mesh网络）、光纤等多种通信方式,传输到配电网自动化主站,预处理、噪声滤除、图像增强、图像边缘检测,分析红外热图像数据处理结果后,进行固体绝缘开关柜的过热故障诊断。这种新技术的实用性已被具体的实验和工程验证,简化了配电网固体绝缘开关柜的检修工作。

Online Detection Technology of Solid Insulation RMU Based on Infrared Thermal Imaging

Large thermal power in high voltage insulation unit often leads to serious local heat and short circuit fault. In order to ensure distribution power grid stability, security and reliability, a novel on-line detection technology is proposed for solid insulation ring main unit(RMU). Firstly, the original infrared thermal image is obtained and transmitted to distribution automation system master station by using different communication modes including 230 Mesh and fiber. The image is analyzed after preprocessing, noise filtering, image enhancement, and edge detection to detect fault in solid insulated RMU. This novel technology can diagnose electrical joints accurately comparing to traditional contact measurement method.