Mehrdad Ahmadi Kamarposhti - Department of Electrical Engineering, Jouybar Branch, Islamic Azad University, Jouybar, Iran
Mehdi Babaei - Young Researchers and Elite Club, Jouybar Branch, Islamic Azad University, Jouybar, Iran
Pegah Nouri - Young Researchers and Elite Club, Jouybar Branch, Islamic Azad University, Jouybar, Iran

New high voltage laboratory earth system perform in order to achieve to the goals like, Creating a low impedance path back to Earth for the test equipment, Limiting the potential of different components in laboratory in a permissible limit, avoids of Creating noise in measurements during testing and safety. Requirements for design and implementation of high voltage laboratory grounding system are different from other parts like Electrical substations, power plants and buildings. This paper investigates the modeling and analysis of transient behavior of High Voltage Laboratory earth. First we consider several values for soil resistivity in different deeps; an appropriate model for the soil is extracted. After this step, different parts of Laboratory earth System Are imported in CDEGS software which is a Specific modeling and analysis of transient behavior ofthe Earth systems, and after that the Study of different earth plans like adding earth rods, the mesh size and the electrode mounting plate (well earth) is presented.

High Voltage Laboratory. Earth System. Transient Behavior. CDEGS