Under the background of developing smart grids and ubiquitous electric Internet of Things (UEIoT) in China, an IoT based cloud monitoring system for high-voltage power distribution room in the electric substation has been proposed in this paper as a typical pioneer project. This system includs perception layer, network layer, application layer. The Key technologies, which contribute to realize real-time automatic control, intelligent regulation, online analysis and decision-making, are illustrated in detail. The proposed IoT based cloud monitoring system has been conducted in several areas of Hunan province and the field application illustrates the benefits of this system in the aspects of reducing manual operation, raising efficiency and preventing accidents.
Partial discharge live detection of GIS can effectively find internal defects, but it is often interfered by surrounding environmental noise, which affects the correct identification and judgment of defect signals. This paper introduces the application of AE and UHF technique in the live detection of GIS, which successfully recognizes the external interference signal, analyzes the cause of abnormal partial discharge signal based on signal characteristics, and uses the method by calculating time difference to locate the source of the signal. An internal checking on the equipment were conducted based on the test results while the equipment were stopped, and verified the existence of floating fault inside GIS.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.