scholarly journals PI Controller Based Load Frequency Control Approach for Single-Area Power System Having Communication Delay

2018 ◽  
Vol 51 (4) ◽  
pp. 622-626 ◽  
Author(s):  
Sahaj Saxena ◽  
Yogesh V. Hote
Keyword(s):  
Power System ◽  
Frequency Control ◽  
Pi Controller ◽  
Load Frequency Control ◽  
Communication Delay ◽  
Control Approach ◽  
Load Frequency

scholarly journals STUDI ANALISIS GOVERNOR SEBAGAI LOAD FREQUENCY CONTROL PADA PLTG MENGGUNAKAN FUZZY LOGIC CONTROLLER

2018 ◽  
Vol 17 (1) ◽  
pp. 107
Author(s):  
Gusti Made Ngurah Christy Aryanata ◽  
I Nengah Suweden ◽  
I Made Mataram
Keyword(s):  
Fuzzy Logic ◽  
Power System ◽  
Fuzzy Logic Controller ◽  
Frequency Control ◽  
Pi Controller ◽  
Active Power ◽  
Load Frequency Control ◽  
Electrical Power System ◽  
Load Frequency ◽  
Frequency Changes

A good electrical power system is a system that can serve the load in a sustainable and stable voltage and frequency. Changes in frequency occur due to the demand of loads that change from time to time. The frequency setting of the PLTG power system depends on the active power charge in the system. This active power setting is done by adjusting the magnitude of the generator drive coupling. The frequency setting is done by increasing and decreasing the amount of primary energy (fuel) and carried on the governor. Simulation in governor analysis study as load frequency control at PLTG using fuzzy logic controller is done by giving four types of cultivation that is 0,1 pu, 0,2pu, 0,3 pu and 0,4 pu. The simulation is done to compare the dynamic frequency response output and the resulting stability time using fuzzy logic controller with PI controller. Based on the results of comparative analysis conducted to prove that governor as load frequency control using fuzzy logic control is better than using PI controller. This can be seen from the output response frequency and time stability.

Linear active disturbance rejection control approach for load frequency control of two-area interconnected power system

2017 ◽  
Vol 41 (6) ◽  
pp. 1562-1570 ◽  
Author(s):  
Congzhi Huang ◽  
Jing Li ◽  
Shicai Mu ◽  
Huaicheng Yan
Keyword(s):  
Power System ◽  
Control Problem ◽  
Disturbance Rejection ◽  
Frequency Control ◽  
Load Frequency Control ◽  
Active Disturbance Rejection Control ◽  
Control Approach ◽  
Load Frequency ◽  
Active Disturbance Rejection ◽  
Disturbance Rejection Control

The performance optimization of the load frequency control problem for two-area interconnected power system is investigated by employing the gravitational search algorithm based linear active disturbance rejection control approach. Firstly, the load frequency control problem of a two-area power system with two identical non-reheated turbine units is formulated, taking into account the external step disturbance and parameters perturbation. Then, the essentials of the second order process oriented linear active disturbance rejection control approach are presented, where the parameters optimization procedure based on the gravitation search algorithm is proposed. Finally, the effectiveness of the proposed approach in the load frequency control problem is validated by the given extensive simulation examples. The disturbance rejection ability and the robustness with respect to the parameter perturbation of the proposed approach are also demonstrated.

scholarly journals Adaptive Hybrid Fuzzy PI-LQR Optimal Control using Artificial Immune System via Clonal Selection for Two-Area Load Frequency Control

2020 ◽  
Vol 12 (3) ◽  
pp. 667-685
Author(s):  
Muhammad Abdillah ◽  
Keyword(s):  
Optimal Control ◽  
Power System ◽  
Clonal Selection ◽  
Frequency Control ◽  
Dynamic Performance ◽  
Test System ◽  
Pi Controller ◽  
Operating Conditions ◽  
Load Frequency Control ◽  
Load Frequency

Load frequency control (LFC) problem has been a foremost issue in electrical power system operation and is becoming more important recently with growing size, changing structure, and complexity in interconnected power systems. In general, LFC system utilizes simple proportional integral (PI) controller. However, due to the PI control parameters are commonly adjusted based on classical or trial-error method (TEM), it is incapable of obtaining good dynamic performance for a wide range of operating conditions and various load change scenarios in a multi-area power system. This paper introduces a novel control scheme for load frequency control (LFC) using hybrid fuzzy proportional integral (fuzzy PI) and linear quadratic regulator (LQR) optimal control, where fuzzy logic control (FLC) is used to adjust the gains KP and KI of PI controller which called fuzzy PI in this paper, while the LQR optimal control method is employed to obtain the feedback gain KOP through Algebraic Riccati Equation (ARE). The merit of both control strategies is to tune their control feedback gains, which are KP, KI and KOP, regarding various system operating conditions. Artificial immune system (AIS) via clonal selection is utilized to optimize the membership function (MF) of fuzzy PI and weighting matrices Q and R of LQR optimal control in order to obtain their optimal feedback gains. To examine the efficacy of the proposed method, LFC of two-area power system model is utilized as a test system. The amalgamation of fuzzy PI-LQR is applied to improve the dynamic performance of two-area LFC. Other control schemes such as PI controller, hybrid PI controllerLQR, and hybrid fuzzy PI-LQR are also investigated to the studied a test system. The obtained simulation results show that the proposed method could compress the settling time and decrease the overshoot of LFC which is better than other approaches that are also employed to the tested system in this study.

scholarly journals Effect of different Communication Delay Latencies on LMI based Load Frequency Control Model

2019 ◽  
Vol 8 (11) ◽  
pp. 2325-2329
Keyword(s):  
Power System ◽  
Time Delays ◽  
Frequency Control ◽  
Load Frequency Control ◽  
Communication Delay ◽  
Linear Matrix ◽  
Nonlinear Parameters ◽  
Adverse Conditions ◽  
Load Frequency ◽  
The Stability

This paper present’s the study of Load Frequency Control (LFC) with certain nonlinear parameters at different communication delay latencies. The main aim is to maintain the stability of power system in all the adverse conditions including time delays in the network. Here, the stability of the system is demonstrated using Lyapuonav stability theorem in the presence of Delay’s and Linear Matrix Inequalities (LMI). Time delays are taken in the network. These delay latencies are linearized using the rational approximation method. Here Padé approximation is used with different time delay values. The problem is formulated using a decentralized LFC approach for a power system containing a single area. Simulation results carried out with different delay latency values integrated with the Load frequency control LMI and rigorous analysis is performed to test the robustness of the proposed strategy

Sign in / Sign up

Export Citation Format

Share Document