Application study of embedded partial discharge detection technology for switch cubicles

By studying the defects of existing detection techniques for partial discharge of switch cubicle, a novel scheme of partial discharge detection for switch cubicle is proposed in this paper. In the proposed design scheme, all components of proposed detection equipment are embedded inside the metal shell of a switch cubicle, which effectively minimizes the environmental noise disturbance on the detection data. This detection equipment can work automatically and continuously without human intervention, and the detection result is visually displayed in numerical form, which makes it faster and more convenient for inspection personnel to detect the partial discharge of a switch cubicle. Through the laboratory´s tested and field installation and operation, the result indicates that the proposed detection equipment is easy and effective in operation, and comparing with existing detection equipments, the proposed detection equipment has higher precision in output detection data.