A Review on Methods to Find Harmonic Sources in IEEE Buses

This Paper Gives A Comprehensive Evaluation Of Approaches For Suppressing Harmonics In Ieee Buses By Detecting Harmonics In The Buses Using Various Methodologies, Accounting For A Variety Of Uncertainties, And Then Determining The Right Source Of Harmonics. Matlab Software To Determine And Test Both The Problem And The Solution Utilizing Various Methods. Increased Use Of Nonlinear Loads Causes Sag And Swell Due To Multiple Times Switching, Which Has An Impact On Power Quality (Pq) And Raises The Demand For Power Quality Enhancement. Various Forms Of Irregularities Are Connected With Power System Signals, Resulting In Harmonics Of Various Frequencies [26] Therefore, There Is A Pressing Demand For Approaches Right Now That Can Influence The Present Era's Collective Harmonic Impact On Various Modern Loads [25]

Power QualityAnalysis by Calculating Total Harmonic Distortion at Different Sag Values Using Dynamic Voltage Restorer

Power Quality is the most important issue in distribution network due to frequency variation, voltage dip, voltage swell and Harmonic Distortion.The Paper deals with the compensation of voltage dip using a series connected device Known as Dynamic voltage Restorer, which is relatively less expensive, small in size, higher energy storage and power efficient device as compared to other custom power devices. In this paper,two level Pulse Width Modulation system is utilized to adjust the voltage plunge at various sag esteems. The Total symphonious Distortion esteems are likewise determined utilizing Fast Fourier Transform investigation and contrasted and additionally without channel area utilized in the DVR unit and the rate enhancement in the Total harmonic Distortion by utilizing channel unit is likewise assessed

Artificial Bee Colony Algorithm for Transmission Loss Minimization Considering Wind Power

In the present day scenario private power producers are increasing rapidly to meet the increase demand of electricity. Under stressed condition, one way to save the system from voltage collapse is to provide reactive power support with shunt FACTS controllers at appropriate locations. Placing FACTS devices is the most effective way for utilities to improve the voltage profile and stability margin of the system.This thesis presents the optimal power flow (OPF), OPF with wind and wind & static var compensator (SVC) in power system using Artificial Bee Colony to minimize the transmission loss. The optimal power flow without wind and with wind & SVC are performed on the different bus system with normal loading using ABC with load flow. The proposed algorithms have been tested on the IEEE-14 bus, 30-bus and Indian 75-bus system. The tested results are compared with the Wind and without wind to show the effectiveness of the SVC using ABC

Interrelated Solar and Thermal Plant Autonomous Generation Control Utilizing Metaheuristic Optimization

In this study, the load frequency control of a two-area thermal generation system based on renewable energy sources is considered. When solar generation is used in one of the control areas, the system becomes nonlinear and complicated. Zero deviations in the frequencies and the flow of power through the tie lines are achieved by considering load disturbances. A novel grey wolf optimizer, which is a metaheuristic algorithm motivated by grey wolves is utilized for tuning the controller gains. The proportional, integral, and derivative gains values are optimized for the two-area Solar integrated Thermal Plant (STP). As the load connected to the system varies continuously with time, random load variation is also applied to observe the effectiveness of the proposed optimization method. Sensitivity analyses have also been adopted with the deviation in the time constants of different systems. Inertia constant variations of both areas are considered from −25% to +25%, with or without STP. The proposed algorithm shows good dynamic performance as shown from the simulation results in terms of settling time, overshoot values, and undershoot values. The power in the tie line achieves zero deviation quite rapidly in solar-based cases compared to those without STP

Molecular Docking Identifies 1,8-Cineole (Eucalyptol) as A Novel PPARγ Agonist That Alleviates Colon Inflammation

Inflammatory bowel disease, comprising Crohn's disease (CD) and ulcerative colitis (UC), is often debilitating. The disease etiology is multifactorial, involving genetic susceptibility, microbial dysregulation, abnormal immune activation, and environmental factors. Currently, available drug therapies are associated with adverse effects when used long-term. Therefore, the search for new drug candidates to treat IBD is imperative. The peroxisome proliferator-activated receptor-γ (PPARγ) is highly expressed in the colon. PPARγ plays a vital role in regulating colonic inflammation. 1,8-cineole, also known as eucalyptol, is a monoterpene oxide present in various aromatic plants which possess potent anti-inflammatory activity. Molecular docking and dynamics studies revealed that 1,8-cineole binds to PPARγ and if it were an agonist, that would explain the anti-inflammatory effects of 1,8-cineole. Therefore, we investigated the role of 1,8-cineole in colonic inflammation, using both in vivo and in vitro experimental approaches. Dextran sodium sulfate (DSS)-induced colitis was used as the in vivo model, and tumor necrosis factor-α (TNFα)-stimulated HT-29 cells as the in vitro model. 1,8-cineole treatment significantly decreased the inflammatory response in DSS-induced colitis mice. 1,8-cineole treatment also increased nuclear factor erythroid 2-related factor 2 (Nrf2) translocation into the nucleus to induce potent antioxidant effects. 1,8-cineole also increased colonic PPARγ protein expression. Similarly, 1,8-cineole decreased proinflammatory chemokine production and increased PPARγ protein expression in TNFα-stimulated HT-29 cells. 1,8-cineole also increased PPARγ promoter activity time-dependently. Because of its potent anti-inflammatory effects, 1,8-cineole may be valuable in treating IBD