Loss minimization in power system is an important research issue. Transmission line losses in a power system can be minimized by means of reactive power compensation. The continuous demand in electric power system network has caused it to be heavily loaded leading to voltage instability. This phenomenon has also led to voltage profile depreciation below the acceptable secure limit. The signific...

-In this paper, multi-objective optimal placement (MOOP) of multi-type flexible AC transmission systems (FACTS) devices for Thailand power system is proposed. Four types of FACTS devices are used: thyristor-controlled series capacitor (TCSC), thyristor-controlled phase shifter (TCPS), unified power flow controller (UPFC), and static var compensator (SVC). The problem is decomposed into the opti...

Reactive power compensation in a power distribution network plays a vital role in improving voltage and power system stability. Flexible AC transmission system (FACTS) devices like Static Var Compensators (SVCs) are used to control reactive power generation or absorption in long transmission line. However, these SVCs will introduce harmonic current in to the system due to the operation of thyri...

Increasing demand for electricity has placed heavy stress on power system security. Therefore, this paper focuses on the problem of how to maximize power system static security in terms of branch loading and voltage level under normal operation and even the most critical single line contingency conditions. This paper proposes a hybrid approach to find out the optimal locations and settings of t...

<span lang="EN-US">The present work investigates the flexible AC transmission system (FACTS) device's role to improve voltage stability for a distribution network of various types loads. Our analysis was based on using static synchronous compensator (STATCOM) device over test system. Firstly, detailed description mathematical model used in our is presented. Then we studied effect inductiv...

This work suggests a type-2 fuzzy lead–lag (T2FLL) controller structure for flexible AC transmission system (FACTS)-based damping controllers and power stabilizers (PSSs) stability improvement. The values of the suggested are optimized by hybrid adaptive differential evolution pattern search algorithm (hADE-PS) method. Initially, single-machine infinite-bus (SMIB) with (LL)-structured FACTS PSS...

The strategic intent of the African Union is to develop a “Smart Integrated Electric Power Super Grid” driven by modern tools and advances in high-voltage direct current (HVDC) engineering flexible alternating technology systems (FACTS), which central supporting Africa’s sustained economic growth development. southern region, including South Africa, beset critical challenges perennial load-shed...

One of the best flexible AC transmission system (FACTS) is unified power flow controller (UPFC). As it gets more benefit from both real and reactive transfer, used in for controlling transmitted power. The UPFC controls on side system. When as well set tries to follow command by using proportional integral (PI) controller. But some systems PI controllers cannot produce proper due oscillations. ...

1 Abstract-This paper proposed the design of wide-area robust damping (WARD) controller for multiple Flexible AC Transmission Systems (FACTS) devices to enhance the stability of power system with considering time delay of wide-area signals. Firstly, as power systems interconnect more and more to exchange large amounts, wide-area measurement system (WAMS) is widely applied to monitor and control...