Locating cross-country faults in a parallel transmission line is critical and challenging task because occur at different locations. In this paper, an accurate fuzzy inference system scheme which provides fault location results for presented. The information from single end of the used. A 400 kV, designed MATLAB while modeled with Fuzzy Logic Toolbox. “MAMDANI” type triangular member functions attaining distance. voltages currents captured. Then, impedances each phase computed given as input...

The faults occurring in different phases at multiple locations and times are difficult to locate exact location using conventional techniques.This paper develops a fault estimation approach fuzzy inference system for multi phase ground transforming six transmission (SPT) line.The current data of SPT line generated by MATLAB software processed through butter worth filter, sampling discrete fourier transform distance locator.The proposed technique is dependent on single terminal only.Mamdani...

Traditional directional relaying methods for 6-phase transmission lines have complex effort, and so there is still a need novel direction estimation scheme.This study presents Mamdani-fuzzy expert system (MFES) approach discriminating faulty section/zone, classifying faults locating in lines.The fundamental component of currents, voltages phase angles are captured at single bus used the protection scheme.Simulation results substantiate that scheme very successful against many parameters such...

Abstract The faults occurring in different sections are difficult to identify using the traditional techniques. This paper investigates a fuzzy expert system for directional relaying, classification, and location of double-circuit transmission lines. current magnitudes measured at only one terminal line used compute discreet Fourier coefficients. Thus, this scheme does not involve any communication channel. presented is achieved from structure MAMDANI LabVIEW software. Test case studies show...

This paper proposes a novel control method for the flow of power between utility and micro grid by controlling real reactive through back to converter .The propose strategy run in two different cases , case 1 - are shared load converter. Case 2 required demand is first taken until DG reaches its maximum limit .the balanced only . It also shown voltage or frequency fluctuation side has no impact on Power fluctuation. Different variations i.e under, over as well constant sharing presented...

The main aim of this paper is building a small micro grid test bed system with few sources, and loads various types lumped resistive (R), capacitive (C) inductive (L) elements. Before the advent electric smart every load facilitated its own electromagnetic. Slowly an advancement protection numerical relays came into existence. Because in communication between central computer possible, coordinative was evolved. For monitoring dynamic state many were now replaced by intelligent electronic...

In the recent years monitoring and operation of power system became complex, due to more demand from different linear non-linear loads generation sources. For effective system, existing methods need improve or new technologies are required. phasor measurement unit (PMU) based is suitable, because it provide dynamic state system. this paper PMU proposed with data storage protection. With method values voltage current signals calculated at location help software program also possible. model in...

A. Naresh Kumar, M. Chakravarthy, Suresh Nagaraju, Ramesha, Bharathi Gururaj, and Elemasetty Uday Kiran. International Journal of Fuzzy Logic Intelligent Systems 2023;23:130-9. https://doi.org/10.5391/IJFIS.2023.23.2.130

Day to day electrical power demand increases very rapidly with linear and non-linear load demands. Especially the nonlinear loads are creating harmonics in current voltage signals. The signal values measured phasor measurement unit (PMU) for proper magnitude phase angle calculation even presence of harmonic components performance PMU is depending upon technique. Different technique/methods available calculation, from method there difference accuracy, computation time complexity. In this...

In this paper a detailed case study has been presented on design, erection, testing and commissioning of 200Kwp solar power plant at Vasavi College engineering, Ibrahimbagh, Hyderabad. This deals with sizing various equipments, specification PV modules, Inverters, MCCB, Cables associated protective equipment. Problems encountered during testing, operation solutions adopted for these problems are discussed. The is generating average 25,000 units per month resulting in saving Rs 2.5 lakhs the...

Abstract In real time the magnitude and phase angle of voltage current signals vary continuously. The measurement angles these are very important for visualization real-time power systems pictorially knowing dynamic flow studies. This work presents signal's with synchronization. represented a single quantity phasor. For phasor values two different techniques used, they Recursive Discrete Fourier Transform (RDFT), Non-Recursive (NRDFT). With RDFT (magnitude angle) constant variation, fixed...

Fault location plays an important role in power systems. It is frequently used transmission lines to reduce the system damage for growing electrical energy demand. However, estimation method itself easy be disturbed by different parameters and gives errors. To solve this problem, paper introduces a scheme that uses neuro fuzzy (NFS) locate all types of faults such as shunt faults, transforming series simultaneous six phase overhead line (SPOL). This has been performed on 68 km, 138 kV, 60Hz,...