Analysis and modeling of parallel FACTS devices with the aim of improving voltage stability under possible fault conditions

Subject Areas : Electronics Engineering

Hani shahnazari ¹ , Hadi Shahnazarisani ²

1 - Islamic Azad University, Science and Research Branch of Guilan, Iran, Department of Electrical Engineering, Mazandaran, Ramsar, Iran
2 - Semnan University, Department of Electrical Engineering, Mazandaran, Ramsar

Received: 2021-05-21 Accepted : 2021-05-21 Published : 2018-06-22

Keywords:

Abstract :

This paper examines the application of FACTS devices to increase the voltage stability margin in power systems. Most of the proposed methods for allocating FACTS devices consider only the normal state of the network. However, the mains voltage usually breaks down due to an unforeseen accident. Therefore, in this paper, the strategy of locating FACTS devices based on possible (unpredictable) studies is proposed. Using medal analysis, a possible index is defined that can be used to classify system buses based on their effect on improving system voltage stability, under all possible probabilities. This method has been shown to lead to integrated reactive power supply. As a result, it can be more effective in the event of a further error. The IEEE standard 14-bus network has been used to demonstrate the proposed achievement in locating parallel FACTS devices. The results show that the allocation of FACTS devices by the proposed method improves the system voltage stability under the conditions of error probability.