Design and Layout Optimization Technology of Multi Bandwidth Array Sensing Parameters for Substation Main Equipment

There are various characteristics before the operation or failure of substation equipment with defects, and its monitoring system is a small current monitoring system mainly composed of portable detection equipment for inspection and independent online monitoring devices. However, recent experience in operation and maintenance has shown that live detection cannot timely detect abnormal states of substation main equipment, and online monitoring methods are still independent and cannot form a monitoring network system. In response to the above issues, this article proposes a multi bandwidth array sensing parameter design and layout optimization technology for substation main equipment. By extracting the current state variables of each device node through widely distributed broadband current sensors, a sensor based on electric flow is formed. Based on the typical two-thirds wiring method, a sensor array layout method and a model array are provided. For the array system with large sensor nodes, an RFEO with multi- objective constraints is proposed based on system decomposition; The improved algorithm based on iterative LMI obtains the optimal
$H$
∞ performance metric, improves the observer estimation performance, and further reduces the conservatism of the system.