Detection of Different Types of Fault and its Location in Transmission Line by using Negative Sequence Component

Abstract

In recent years, voltage instability has been a major issue in power systems. There are many factors contributing to voltage collapse which might cause blackouts, such as demands of consumption growth, the influence of harmonic component and reactive power constraints. These factors are very difficult to predict in real environment. High-voltage transmission lines are an important part of the power system. As the operation of the power grid expands, the demands on long distance transmission lines will increase. These lines are often exposed to large diverse geographical areas with complex terrain and weather conditions. If a fault occurs in a transmission line, it can be very hard to find and report it. Even if the fault is fixed, the new steady state of the power systems needs to be monitored to avoid failure again. The paper aims at studying the technology which overcomes various limitations of the power system.