Optimal location of series FACTS devices to control line overloads in power systems with high wind feeding

Abstract

The planned offshore wind farms in Germany are basically located in North region. For wind integration in Germany, establishing new transmission lines and employing new technologies have become unavoidable. Establishing new transmission lines is very costly and difficult regarding enviromental condition. One of the solutions is the utilization of Flexible AC Transmission Systems (FACTS). This paper discusses a method for determining the placement of series compensation to control line overload in power systems with wind power penetration. By a sensitivity based method critical lines can be identified quickly and accurately, to obtain desired wind feeding into the system. Thyristor Controlled Series Compensator (TCSC) is applied for system stabilization as a typical FACTS devices. This method is applied to realistic scenarios in a test system, which simulates reduced 380 kV network of Germany. Simulation results showed that the proposed method is effective and can enhance the transfer capability margin of existing power systems.Index Terms--Flexible AC Transmission System (FACTS), load flow controller (LFC), offshore wind farms, optimal location, overload, sensitivity index, wind feeding.

Management of a Solar-PV System with Energy Storage

“…Transmission systems face challenges in the integration of renewable sources since they have limited power transfer capacity [5][6][7][8][9][10]. To enhance the available power transfer capacity of transmission lines, flexible AC transmission (FACTS) devices are employed.…”

“…In this instance, the grid should supply the required power according to load demand. Hence, to take advantage of its full capacity at nighttime, the inverter is used to supply reactive power to the grid [9,10,[12][13][14][15].…”

Sensitivity analysis-based performance and economic operation of wind-integrated system with FACTS devices for optimum load dispatch

“…Placement of FACTS devices within the system is mainly done to improve the voltage profile of the system, system loadability and minimization of losses. System performance analysis using GA and PSO (Shakib et al 2009) shows that PSO gives better placement of FACTS devices to increase availability of power at users end. Variable speed wind turbines equipped with doubly fed induction generator (DFIG) are also widely used for advanced reactive power and voltage control strategies for wind-integrated systems (Shi et al 2012).…”

Novel selection factors based optimal placement of TCSC controller in power transmission system for contingencies using PSO

“…FACTS controllers [9] include Thyristor Controlled series compensators(TCSC), Static Var Compensators(SVC), Thyristor Controlled Phase Angle Regulator (TCPAR), Static Compensators(STATCOM), Unified Power Flow Controllers(UPFC)etc., There are several indices/methods proposed in literature for placement of FACTS controllers from system loadability, voltage stability, wind power integration and power system security viewpoint. A method to determine a line which is highly sensitive to the new generation strategies,(i.e) wind integration sensitivity index was studied to locate TCSCs in [2]. Device allocation under system fluctuations due to demand and renewable generation were investigated in [12].…”