Condition monitoring of high voltage equipment in smart grid

Smart grid is a very important concept that optimizes and improves the reliability of power transmission systems. The smart grid is required to be more aware of its operative conditions and should have at least some degree of self healing capability. This paper discusses the condition monitoring technologies of HV equipment in smart grid. The development status of condition monitoring technologies in substation, conversion substation, and transmission line are introduced. To solve the problems of condition monitoring systems of power systems, and develop the technologies of condition monitoring in smart grid, the intelligent sensor networks, communication network with IEC 61850 protocol for condition monitoring of HV equipments in smart grid are propoed. At last, the intelligent sensors, intelligent electronic device, the non-contact energy storage and power management module are introduced.