Immunity technique in determine micro grid studies due to fault occurrence

In this paper, Artificial Immunity System (AIS) is used to study transient fault occurrence. The concept of micro grids is used to protect system against transient fault through AIS technique. Transient fault occurrence is analyzed and studied using the concept of wide area measurement protection and control (WAMPAC). WAMPAC gives the opportunity of having a wide information system and sending selected local information to remote locations. The existence of phasor measurement unit (PMU) found to be addressed all problems that have surfed in the most major blackout, as it overcome problem of real time monitoring data. It help to put a defiance strategy which is designed to answers the following inquiries: a-detecting abnormal condition, b-taking Special Protection Schemes (SPS) action, c-initiating SPS action, and d-taking SPS action in certain place. The proposed technique is based on a technology called Artificial Immunity system (AIS). It is used as a predictor to decide if the system is stable or not, and determines the main generating groups which can construct proper operating islands. The proposed system is applied on New England IEEE 39-Bus system. The proposed defensive approach shows good results in mitigating transient instabilities power system. © 2013 American Scientific Publishers All rights reserved.