Fuzzy Logic Decoupling Control of Real and Reactive Power in Grid-Connected Photovoltaic Power System based a Seven Levels Inverter Linked to a Three-Stage Boost Circuit

2021 ◽  
pp. 1-14
Author(s):  
Belgacem Ais ◽  
Tayeb Allaoui ◽  
Abdelkader Chaker ◽  
Mouloud Denai ◽  
Belkacem Belabbas ◽  
...  
Keyword(s):  
Fuzzy Logic ◽  
Power System ◽  
Reactive Power ◽  
Decoupling Control ◽  
Photovoltaic Power

scholarly journals Optimum Distribution of Power by Intelligent Fuzzy Sets Analyzer and Controller

2018 ◽  
Vol 7 (2.24) ◽  
pp. 263
Author(s):  
Karthikeyan M ◽  
S Muthu Vijaya Pandian ◽  
. .
Keyword(s):  
Fuzzy Logic ◽  
Power System ◽  
Reactive Power ◽  
Electrical Power ◽  
Distribution Management ◽  
Ac Power ◽  
Fuzzy Logic Approach ◽  
Increasing Demand ◽  
Distribution Of Power ◽  
Compensating Devices

Meeting increasing demand for the electrical power without changing the existing infrastructure is a challenging issue. The transmission and the distribution are always struggling with losses in our ac power system networks. In this research an intelligent fuzzy logic approach is to be used for power system operation and control in distribution management. The VAR compensating devices like OLTC, SVC are to be controlled by the fuzzy expert system for modifying reactive power. The fuzzy membership functions, fuzzy rules are to be displayed. A co-ordination control between these VAR compensating devices using fuzzy logic control is to be discussed. An optimum location and the proper design of a capacitor banks for reducing the harmonic injection in the power system is to be suggested. The validity of this approach is to be given by the comparison graphs. All the simulations are to be carried out by MATLAB software. This research will investigate the effects of arising problems in an ac power system distribution without changing the existing infra structure. The various types of problems arising in a power system are to be listed. Among these the voltage stability in the buses has got the top priority. The solutions for reducing the power congestion created by these arising problems can be carried out.  

scholarly journals Fuzzy controlled SVC for power system damping

2020 ◽  
Vol 18 (3) ◽  
pp. 1673
Author(s):  
Zalina Kamis ◽  
Mohd Ruddin Ab. Ghani ◽  
Muhammad Nizam Kamaruddin ◽  
Hairol Nizam Mohd Shah
Keyword(s):  
Fuzzy Logic ◽  
Power System ◽  
Reactive Power ◽  
Short Circuit ◽  
Active Power ◽  
Fuzzy Membership Function ◽  
Base System ◽  
Additional Signal ◽  
Mode Oscillation ◽  
Tie Line

<p>This paper presents the ability of the fuzzy logic-based stabilizer used to generate the supplementary voltage control signal of the SVC to improve the damping of the inter-area mode oscillation in the power system. The base system is symmetrical, consisting of two identical areas connected by a relatively weak tie line. The SVC is chosen to be installed at the tie line midpoint. The active power of the local line will be used as an input signal for the stabilizer. The additional signal is calculated using fuzzy membership function to determine the quantity of reactive power supplied absorbed by SVC. The system oscillation is indicated by a 3-phase-to-ground short circuit occurring at 0.2s of the simulation and subsequently clearing after 100ms. Simulation with the sample power system shows that when subjected to a disturbance, fuzzy logic-based SVC stabilizer provides good damping in inter-area mode oscillation for the system. The effectiveness of the stabilizer applied with and without PSS will also be investigated.</p>

scholarly journals Experimental Studies on Power System Stabilization by Fuzzy Logic Switching Control of SMES Active and Reactive Power

1999 ◽  
Vol 119 (11) ◽  
pp. 1150-1156
Author(s):  
Hajime Miyauchi ◽  
Kenichi Fujimoto ◽  
Yasuhiro Yamasaki ◽  
Masayasu Ohnishi ◽  
Takashi Hiyama
Keyword(s):  
Fuzzy Logic ◽  
Power System ◽  
Reactive Power ◽  
Experimental Studies ◽  
Switching Control ◽  
Active And Reactive Power

scholarly journals Transient Stability Enhancement of a Grid-Connected Large-Scale PV System Using Fuzzy Logic Controller

Electronics ◽  
2021 ◽  
Vol 10 (19) ◽  
pp. 2437
Author(s):  
Md. Rifat Hazari ◽  
Effat Jahan ◽  
Mohammad Abdul Mannan ◽  
Narottam Das
Keyword(s):  
Fuzzy Logic ◽  
Power System ◽  
Control Strategy ◽  
Computer Aided Design ◽  
Large Scale ◽  
Transient Stability ◽  
Fuzzy Logic Controller ◽  
Reactive Power ◽  
Low Voltage ◽  
Pv System

This paper presents a new intelligent control strategy to augment the low-voltage ride-through (LVRT) potential of photovoltaic (PV) plants, and the transient stability of a complete grid system. Modern grid codes demand that a PV plant should be connected to the main power system during network disturbance, providing voltage support. Therefore, in this paper, a novel fuzzy logic controller (FLC) using the controlled cascaded strategy is proposed for the grid side converter (GSC) of a PV plant to guarantee voltage recovery. The proposed FLC offers variable gains based upon the system requirements, which can inject a useful amount of reactive power after a severe network disturbance. Therefore, the terminal voltage dip will be low, restoring its pre-fault value and resuming its operation quickly. To make it realistic, the PV system is linked to the well-known IEEE nine bus system. Comparative analysis is shown—using power system computer-aided design/electromagnetic transients including DC (PSCAD/EMTDC) software—between the conventional proportional–integral (PI) controller-based cascaded strategy and the proposed control strategy to authenticate the usefulness of the proposed strategy. The comparative simulation results indicate that the transient stability and the LVRT capability of a grid-tied PV system can be augmented against severe fault using the proposed FLC-based cascaded GSC controller.

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