A VNS algorithm for the design of supplementary damping controllers for small-signal stability analysis

Abstract

This paper presents a variable neighborhood search (VNS) optimization algorithm for the design of the parameters of supplementary damping controllers: power system stabilizers (PSS) and the interline power flow controller-power oscillation damping (IPFC-POD) set. The objective is to insert damping to local and inter-area oscillation modes in multimachine power systems. The electric power system dynamics is represented by the current sensitivity model. Simulations were carried out using three systems: a test system known as Two-Area Symmetrical and two real systems, the New England and the Reduced Southern Brazilian. The VNS method was compared with a multi-start algorithm in terms of performance, showing better convergence rates. The proposal was also able to obtain solutions with high damping levels, that showed to be robust when changes on the operating point of the power system were considered. Finally, it has been verified that the PSS controllers were effective for damping the local mode oscillations, while the IPFC-POD set operated mainly damping the inter-area modes.

Suppression of low frequency and shaft oscillations of AC/DC hybrid power system with integrated wind farm under multi‐operating points

“…8 But for interarea oscillation of AC/DC hybrid power system, conventional PSS may not be sufficient. Installing interline power flow controller 10 and unified power flow controller 11 can effectively suppress the interarea oscillation of the interconnected system. Installing interline power flow controller 10 and unified power flow controller 11 can effectively suppress the interarea oscillation of the interconnected system.…”

“…All the investigations on low frequency and shaft oscillations in references [1][2][3][4][5][6][7][8][9][10][11][12] are at the pertinence of a certain operating point and is such that the research results may not be applicable when system operating point varies. Multioperating points take into consideration the stochastic variations of the wind power output, the traditional generator output, and the load.…”

“…FACTs devices have been widely applied in improving transient stability and suppressing power oscillations. Installing interline power flow controller 10 and unified power flow controller 11 can effectively suppress the interarea oscillation of the interconnected system. With the prevalence of DC modulation (DCM) controller, the oscillations in the AC system can be damped rapidly through the application of DCM controller of HVDC.…”

A Neural Network-Based Model Reference Control Architecture for Oscillation Damping in Interconnected Power System

“…However, the controller response is slow in the case of a heavy loaded condition. In [4], the authors presented Variable Neighborhood Search (VNS) optimization algorithm for tackling the problem of oscillations. Although the design process includes high complexity, the proposed controller responds well during normal conditions.…”

Tuning of the Parameters of PSS and IPFC-POD Controllers Using the Current Sensitivity Model

“…Methods based on classic control have been used to set these parameters Anderson and Fouad (1993); De Mello and Concordia (1969); Larsen and Swann (1981). More recently, optimization methods, for example, the, Particle Swarm Optimization Wang et al (2007), the Chu-Beasley's Genetic Algorithm Fortes et al (2016a), Simulated Annealing Fortes et al (2016b), Variable Neighborhood Search Fortes et al (2018), the Fireworks Algorithm Fortes et al (2017) and the Artificial Bee Colony Algorithm Martins et al (2017), have also been used.…”