Contingency Analysis and Ranking on 400 KV Karnataka Network by using Mipower

Abstract

Voltage instability is the phenomena associated with heavily loaded power systems. It is normally intensified due to large disturbance. Power system security and contingency analysis are important tasks in modern energy management systems. The Power system security is one of the significant aspects, where the proper action needs to be taken for the unseen contingency. In the event of contingency, the most serious threat to operation and control of power system is insecurity. Therefore, the contingency analysis is a key for the power system security. The contingency ranking using the performance index is a method for the line outages in a power system, which ranks the highest performance index line first and proceeds in a descending manner based on the calculated PI for all the line outages. This helps to take the prior action to keep the system secure. In this paper Fast Decoupled power flow method is used for the power system contingency ranking for the line outage based on the Active power and Voltage performance index. The ranking is given by considering the overall performance index, which is the summation of Active power and voltage performance index. The proposed method is implemented on 400kV Karnataka Power Transmission Network by using MiPower tool