FACTS Devices In Power System Research Articles

Power flow analysis and control of distributed FACTS devices in power system

Power flow analysis and control of distributed FACTS devices in power system

Optimized FACTS Devices for Power System Enhancement: Applications and Solving Methods

The use of FACTS devices in power systems has become increasingly popular in recent years, as they offer a number of benefits, including improved voltage profile, reduced power losses, and increased system reliability and safety. However, determining the optimal type, location, and size of FACTS devices can be a challenging optimization problem, as it involves mixed integer, nonlinear, and nonconvex constraints. To address this issue, researchers have applied various optimization techniques to determine the optimal configuration of FACTS devices in power systems. The paper provides an in-depth and comprehensive review of the various optimization techniques that have been used in published works in this field. The review classifies the optimization techniques into four main groups: classical optimization techniques, metaheuristic methods, analytic methods, and mixed or hybrid methods. Classical optimization techniques are conventional optimization approaches that are widely used in optimization problems. Metaheuristic methods are stochastic search algorithms that can be effective for nonconvex constraints. Analytic methods involve sensitivity analysis and gradient-based optimization techniques. Mixed or hybrid methods combine different optimization techniques to improve the solution quality. The paper also provides a performance comparison of these different optimization techniques, which can be useful in selecting an appropriate method for a specific problem. Finally, the paper offers some advice for future research in this field, such as developing new optimization techniques that can handle the complexity of the optimization problem and incorporating uncertainties into the optimization model. Overall, the paper provides a valuable resource for researchers and practitioners in the field of power systems optimization, as it summarizes the various optimization techniques that have been used to solve the FACTS optimization problem and provides insights into their performance and applicability.

ON THE SIMULATION OF MODES ОF ELECTRIC POWER SYSTEMS WITH FACTS

Power flow control is an important task of development of electric power systems. It is necessary to reduce the power loss, improve the reliability and quality of power supply and increase the power transmission. Currently, on the basis of modern power electronics effective FАСТS devices for flexible control of power system operation modes have been developed. FАСТS devices are able to simultaneously influence the voltage, the reactance, the angle between the voltages. As it is known, the calculations of the established modes of electric systems are the most frequently performed tasks at all the territorial and time levels of control and planning operations. These calculations are significant by themselves, being also an integral part of software systems of calculation of losses of power and energy in electrical networks, calculation of optimal modes and also sustainability. The need for multiple mode calculation imposes high requirements to the methods of calculation of the established modes in real time in terms of performance and reliability of the results of the solution being obtained under operating conditions of electric power systems. In traditional calculations of the established modes of electrical networks, shunt reactors, current-limiting reactors, capacitor banks, longitudinal compensation devices were accounted in the simulation as passive elements. In regard with the introduction of FACTS devices in power systems, there is an arising need to develop appropriate algorithms and implement them in the form of software for analyzing and controlling the established modes of power systems. The methodology and software for calculation of the established modes of electric networks with consideration of FACTS devices have been developed. The software makes it possible to obtain practically acceptable solutions in three outer iterations. Based on the results of numerical simulation of modes of the power system of the “Azerenergy” JSC it was determined that the application of FACTS devices can significantly increase the transmission line active power, improve voltage levels and reduce losses of active power. The dependences of flows and power losses on the control parameter of FACTS devices have been derived.

Optimal Location of TCSC using Newton Raphson Method for Power Flow Analysis

With the increase in development of power networks, the economical operation of power system has become a concern. The maximum capability of power systems can be exploited by means of FACTS devices. Currently, development of power electronics switches causes reduction in the cost of FACTS and therefore application of FACTS devices especially in distribution networks is more economical. But economic considerations limit the installation of FACTS controller in all of the buses or the lines. There are several methods for finding optimal locations of FACTS devices in power systems. In this paper power flow analysis using Newton Raphson method has been proposed to determine optimal location of Thyristor Controlled Series Compensator (TCSC) in a system. The paper concentrates on the development of the power flow software package using MATLAB and the steady-state modeling of the series FACTS devices TCSC. The configuration of a typical TCSC from a steady-state perspective is the fixed capacitor with a thyristor controlled reactor (TCR). The effect of TCSC on the network can be modeled as a controllable reactance inserted in the related transmission line. The TCSC modeling equations illustrate how the flexibility of the software environment in use allows the easy combination of different objective functions, different sets of variables and different formulations of functions. Case studies demonstrate the operating regions of the series FACTS devices and their effectiveness in increasing the MW power transferability of a particular network.

Comparison and Performance Analysis of Various FACTS Devices in Power System

Comparison and Performance Analysis of Various FACTS Devices in Power System

Multi-objective adaptive clonal selection algorithm for solving optimal power flow considering multi-type FACTS devices and load uncertainty

This paper presents a solution to multi-objective optimal power flow (MOOPF) problem using an adaptive clonal selection algorithm (ACSA) to minimise generation cost, transmission loss and voltage stability index (L-index) in the presence of multi-type FACTS devices in power systems. The proposed approach utilizes clonal selection principle and evolutionary concept which performs cloning of antibodies followed by hyper maturation. In this algorithm, a non-dominated sorting and crowding distance have been used to find and manage Pareto optimal front. Various voltage source converter (VSC) based multi-type FACTS devices such as UPFC, IPFC and GUPFC are considered and incorporated as power injection models in multi-objective optimisation problem formulation. The proposed multi-objective adaptive clonal selection algorithm (MOACSA) has been tested on standard IEEE 30-bus test system with FACTS devices. The results obtained from the proposed MOACSA approach are compared with implementation of standard algorithms namely NSGA-II, MOPSO and MODE.

A PSO-DP Based Method to Determination of the Optimal Number, Location, and Size of FACTS Devices in Power Systems

The presence of reactive component of current in transmission lines causes adverse impact on the network, including power losses, reduction of line capacity, and voltage drop. These ad ...

Steady-state analysis of power system having multiple FACTS devices using line-flow-based equations

Application of FACTS devices in power systems is promising new and more efficient operating scenarios for implementing the transfer of power in a bulk grid or RTO (regional transmission operator). With FACTS devices installed in a power system, methods based on traditional busbar-oriented power flow methods need substantial modifications for handling series line flow control as well as shunt injection powers, as evidenced in the many approaches proposed in the literature. Traditional busbar-oriented power flow algorithms use busbar voltage magnitudes and phase angles as independent variables. An alternative line-flow-and-busbar-voltage-magnitude-based formulation is shown to be more useful in solving the power system with FACTS devices under steady state conditions. Such a formulation permits much greater flexibility in evaluating the FACTS device ratings. All the common FACTS device models are easily incorporated in the new framework. The potential of the alternative formulation is demonstrated through the solution of examples with FACTS devices.