A Novel Composite Sensor for UHF Partial Discharge and Gas State Measurement in GIS

The gas state of the insulating gas significantly impacts the development and extent of the partial discharge (PD) in gas-insulated switchgear (GIS). Correlating these two factors allows for a more comprehensive diagnosis of insulation defects. At present, the ultrahigh-frequency (UHF) method has been widely used for PD detection in GIS....

Application of 3D GIS to 3D Cadastre in Urban Environment

Rapid development has promoted the 3D land use in the urban environment with the increasing requirements of the complex interweaving, such as dwellings, commercial areas, public transportation and urban utilities and infrastructure.3D cadastral object are features which concern unban planning, land resource and real estate of municipalities,...