Robust Load Frequency Control Schemes in Power System Using Optimized PID and Model Predictive Controllers

Abstract

Robust control methodology for two-area load frequency control model is proposed in this paper. The paper presents a comparative study between the performance of model predictive controller (MPC) and optimized proportional–integral–derivative (PID) controller on different systems. An objective function derived from settling time, percentage overshoot and percentage undershoot is minimized to obtain the gains of the PID controller. Genetic Algorithm (GA) and Particle Swarm Optimization (PSO) are used to tune the parameters of the PID controller through performance optimization of the system. System performance characteristics were compared to another controller designed based on MPC. Detailed comparison was performed between the performances of the MPC and optimized PID. The effectiveness and robustness of the proposed schemes were verified by the numerical simulation in MATLAB environment under different scenarios such as load and parameters variations. Moreover, the pole-zero map of each proposed approach is presented to investigate their stability.

Fractional-Order Model Predictive Frequency Control of an Islanded Microgrid

“…As one of the most widely-applied control methods in industry, model predictive control (MPC) ranks second only after PID control algorithm [11]. Recently, MPC has been extended to solve the optimal load frequency control (LFC) problems of power systems [12][13][14][15][16] and operation optimization issues of microgrids [17][18][19][20]. Especially, it should be noted that there are some existing works regarding MPC-based frequency control of microgrids [12,[19][20][21][22][23].…”

Adaptive Tuning of Power System Stabilizer Using a Damping Control Strategy Considering Stochastic Time Delay

“…In [9], present the application of predictive control to frequency control between two areas based on scenario analysis. Still, if the operating conditions change over a wide range, the robustness of the control may not be ensured.…”

“…Model of PSS For the initial condition xo, apply the Laplace transform to (6). It is established ℒ{( )} = ( ) − , with ℒ{ ( − )} = − ( ) for, ≥ , and 0 to < , replacing (7) in (6) we have (8):Grouping equation(8)is determined(9), where the term on the right constitutes the characteristic polynomial.…”

Secure Load Frequency Control of Smart Grids under Deception Attack: A Piecewise Delay Approach

“…In the 1970s, Elgerd and Fosha firstly applied Control Theory to the load frequency control (LFC) problem of interconnected power systems [2]. Since then, many researchers have been working on the LFC analysis with variety of control methods [3][4][5][6][7][8][9]. To mention a few, Reference [3] designed an adaptive load frequency controller for a two-area power system and proposed an optimal control scheme.…”