scholarly journals Adaptive Load Frequency Control in Power Systems Using Optimization Techniques

2021 ◽  
Author(s):  
Tarek Hassan Mohamed ◽  
Hussein Abubakr ◽  
Mahmoud M. Hussein ◽  
Gaber S. Salman
Keyword(s):  
Power Systems ◽  
Frequency Control ◽  
Dynamic Performance ◽  
Digital Simulation ◽  
Optimization Methods ◽  
Optimization Techniques ◽  
Load Frequency Control ◽  
Control Technique ◽  
Modeling And Control ◽  
Load Frequency

At present, simple and classical tuned controllers are widely used in the power system load frequency control (LFC) application. Existing LFC system parameters are usually tuned based on experiences, classical methods, and trial and error approaches, and they are incapable of providing good dynamic performance over a wide range of operating conditions and various load scenarios. Therefore, the novel modeling and control approaches are strongly required, to obtain a new trade-off between efficiency and robustness. Thus, the proposed techniques in this chapter are referred to be an adaptive control technique based on new optimization methods such as Jaya, Practical Swarm Optimization Algorithm, etc., which are used to make an on-line tuning of the LFC parameters in order to face the previous challenges in LFC. The system under study is a small microgrid with a renewable energy source and variable demand load. Digital simulation results are discussed.

scholarly journals Design of PI Fuzzy Logic Gain Scheduling Load Frequency Control in Two-Area Power Systems

Designs ◽  
2019 ◽  
Vol 3 (2) ◽  
pp. 26 ◽  
Author(s):  
Tawfiq Hussein ◽  
Awad Shamekh
Keyword(s):  
Fuzzy Logic ◽  
Power Systems ◽  
Frequency Control ◽  
Gain Scheduling ◽  
Operating Conditions ◽  
Load Frequency Control ◽  
Control Technique ◽  
Load Frequency ◽  
Wide Range ◽  
Fuzzy Logic Technique

In this paper the use of the proportional integral (PI) algorithm incorporated with the fuzzy logic technique has been proposed as advanced gain scheduling load frequency control (GLFC) in two-area power systems. The proposed controller comprises two-level control systems, such that it consists of a pure integral compensator which is connected in parallel with a PI controller. However, and based on load demand, the PI parameters are updated online by means of fuzzy logic rules. With this control technique it becomes possible to eliminate steady state errors as well as to maintain good transient responses. The task of keeping a stable and overall satisfactory mode of operation in interconnected electric power systems is the main goal of any control strategy. This should be guaranteed over a wide range of operating conditions and particularly in sudden and drastic load changes. Therefore, the suggested approach has been examined following abnormal changes in loading conditions to clarify its reliability. The report also investigates the performance of the pure integral (I) controller and GLFC in individual configurations to highlight the advantages of the offered algorithm over the standard ones. The criterion of integral square error (ISE) has been exploited in the performance assessment for the designed controllers. Several simulation scenarios have been conducted, using the MATLAB–Simulink package, to illustrate the proficiency of the developed technique.

scholarly journals Decentralized Adaptive Double Integral Sliding Mode Controller for Multi-Area Power Systems

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Bui Le Ngoc Minh ◽  
Van Van Huynh ◽  
Tam Minh Nguyen ◽  
Yao Wen Tsai
Keyword(s):  
Power Systems ◽  
Sliding Mode ◽  
Frequency Control ◽  
Load Frequency Control ◽  
Control Technique ◽  
Sliding Mode Controller ◽  
Double Integral ◽  
Integral Sliding Mode ◽  
Load Frequency ◽  
Interconnected Power Systems

Most of the existing results for load frequency control of multi-area interconnected power systems can only be obtained when the norm of the aggregated uncertainties is bounded by a positive constant. This condition is difficult to achieve in real multi-area interconnected power systems. In this paper, a new load frequency control (LFC) for multi-area interconnected power systems is developed based on a decentralised adaptive double integral sliding mode control technique where the above limitation is eliminated. First, an adaptive gain tuning law is adopted to estimate the unknown upper bound of the aggregated uncertainties. Second, a double integral sliding surface based adaptive sliding mode controller is proposed to improve the transient performance of the closed loop system. Simulation results show that the proposed control law results in shortening the frequency’s transient response, avoiding the overshoot, rejecting disturbance better, maintaining required control quality in the wider operating range, and being more robust to uncertainties as compared to some existing control methods.

scholarly journals Cost Efficient Distributed Load Frequency Control in Power Systems

2020 ◽  
Vol 53 (2) ◽  
pp. 8037-8042
Author(s):  
Flavio R. de A. F. Mello ◽  
Dimitra Apostolopoulou ◽  
Eduardo Alonso
Keyword(s):  
Power Systems ◽  
Frequency Control ◽  
Load Frequency Control ◽  
Load Frequency ◽  
Distributed Load ◽  
Cost Efficient

scholarly journals Central Tunicate Swarm NFOPID-Based Load Frequency Control of the Egyptian Power System Considering New Uncontrolled Wind and Photovoltaic Farms

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3604
Author(s):  
Hady H. Fayek ◽  
Panos Kotsampopoulos
Keyword(s):  
Power System ◽  
Fractional Order ◽  
Frequency Control ◽  
Optimization Techniques ◽  
Load Frequency Control ◽  
The Novel ◽  
Operating Condition ◽  
Load Frequency ◽  
Non Linear ◽  
Fractional Order Pid

This paper presents load frequency control of the 2021 Egyptian power system, which consists of multi-source electrical power generation, namely, a gas and steam combined cycle, and hydro, wind and photovoltaic power stations. The simulation model includes five generating units considering physical constraints such as generation rate constraints (GRC) and the speed governor dead band. It is assumed that a centralized controller is located at the national control center to regulate the frequency of the grid. Four controllers are applied in this research: PID, fractional-order PID (FOPID), non-linear PID (NPID) and non-linear fractional-order PID (NFOPID), to control the system frequency. The design of each controller is conducted based on the novel tunicate swarm algorithm at each operating condition. The novel method is compared to other widely used optimization techniques. The results show that the tunicate swarm NFOPID controller leads the Egyptian power system to a better performance than the other control schemes. This research also presents a comparison between four methods to self-tune the NFOPID controller at each operating condition.

Distributed Load-Frequency Control in Power Systems

2020 ◽  
Author(s):  
Diego Maldonado Andrade ◽  
Silvana Gamboa ◽  
Jackeline Abad Torres
Keyword(s):  
Power Systems ◽  
Frequency Control ◽  
Load Frequency Control ◽  
Load Frequency ◽  
Distributed Load
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