Jignesh Parmar
74 awesome technical articles
Electrical Middle management professional having more than 22 years rich and dynamic experience in Project Execution / Project Management / Designing / Maintenance diversifies from Electrical Power Transmission (400KV/220KV/66KV)- Distribution(11KV/220V) to Lifts-HVAC-Ventilation-Fire Fighting-Fire Alarm-Lifts-CCTV-Stack Parking Works (High Rise Buildings, Townships, Shopping Complex, Commercial Complex, School, Temple).
Biography: https://electrical-engineering-portal.com/jignesh-parmar
Power Substation
Total Losses in Power Distribution and Transmission Lines
This technical article discusses two types of transmission and distribution losses, technical losses and non-technical losses (or commercial losses). Power generated in power stations pass through large and complex networks like transformers, overhead lines, cables and other equipment and reaches… Read more
Aug 19, 2013 | By Jignesh Parmar
Energy and Power
How to calculate voltage regulation of distribution line
Introduction to voltage regulation Voltage Regulation for 11KV, 22KV, 33KV Overhead Line Permissible Voltage Regulation (As per REC) Voltage Regulation Values Required Size of Capacitor Optimum location of capacitors Voltage Rise due to Capacitor installation Calculate % Voltage Regulation of… Read more
Jun 10, 2013 | By Jignesh Parmar
Energy and Power
How to Determine Correct Number of Earthing Electrodes (Strips, Plates and Pipes) – part 2
Continued from first part: How to Determine Correct Number of Earthing Electrodes (Strips, Plates and Pipes) – part 1 The Earth Resistance of Single Plate electrode is calculated as per IS 3040: R=ρ/A√(3.14/A) Where: ρ = Resistivity of Soil (Ω… Read more
May 13, 2013 | By Jignesh Parmar
Electrical Lectures
How to Determine Correct Number of Earthing Electrodes (Strips, Plates and Pipes) – part 1
Earthing Resistance and the number of earthing electrodes are both dependent on the resistivity of the soil as well as the amount of time it takes for fault current to pass through (one second or three seconds). The number of… Read more
Apr 05, 2013 | By Jignesh Parmar
Low Voltage
Defining Size and Location of Capacitor in Electrical System (2)
Continued from part 1: Defining Size and Location of Capacitor in Electrical System (2) Size of circuit breaker (CB), fuse and conductor of capacitor bank: A. Thermal and magnetic setting of a circuit breaker B. Fuse selection C. Size of… Read more
Mar 11, 2013 | By Jignesh Parmar
Protection
Connections Of Overcurrent Relay
This technical article is continued from first part: Types and Applications Of Overcurrent Relay It’s used for: 3-phase faults the overcurrent relays in all the 3-phases act. Phase to phase faults the relays in only the affected phases operate. Single… Read more
Feb 02, 2013 | By Jignesh Parmar
Energy and Power
Types and Applications Of Overcurrent Relay
Distribution systems are susceptible to overcurrent flow within its components. Overcurrent may arise from abnormal system conditions, including overloads and short-circuit failures, or from typical system conditions, such as transformer inrush current and motor initiation. Consequently, under typical system conditions,… Read more
Feb 01, 2013 | By Jignesh Parmar
Energy and Power
Comparison of Protection Relay Types
This comparison summarize characteristics of all protection relay types described in previously published technical articles: Using Protective Relay For Fighting Against Faults The Good Old Electromechanical Protective Relay The Solid State Relay (Static Relay) Overview Few Words About Digital Protection… Read more
Jan 23, 2013 | By Jignesh Parmar
Cables
Differences Between Earthed and Unearthed Cables
In HT electrical distribution, the system can be earthed or unearthed. The selection of unearthed or earthed cable depends on distribution system. If such system is earthed, then we have to use cable which is manufactured for earthed system. (which… Read more
Jan 21, 2013 | By Jignesh Parmar
Energy and Power
Flexibility and Reliability of Numerical Protection Relay
The first protection devices based on microprocessors were employed in 1985. The widespread acceptance of numerical technology by the customer and the experiences of the user helped in developing the second generation numerical relays in 1990. Conventional electromechanical and static… Read more
Dec 27, 2012 | By Jignesh Parmar
Energy and Power
Few Words About Digital Protection Relay
Around 1980s the digital relay entered the market. Compared to the Solid State Relay, the digital relay takes the advantages of the development of microprocessors and microcontrollers. Instead of using analog signals, the digital relay converts all measured analog quantities… Read more
Dec 24, 2012 | By Jignesh Parmar
Energy and Power
The Solid State Relay (Static Relay) Overview
The static relay is the next generation relay after electromechanical type.The Solid Static relays was first introduced in 1960’s. The term ‘static’ implies that the relay has no moving mechanical parts in it. Compared to the Electromechanical Relay, the Solid… Read more
Dec 19, 2012 | By Jignesh Parmar
Energy and Power
The Good Old Electromechanical Protective Relay
This is the first generation oldest relaying system and they have been in use for many years. They have earned a well-deserved reputation for accuracy, dependability, and reliability. There are two basic types of operating mechanisms: Electromagnetic-attraction relay and Electromagnetic-induction… Read more
Dec 18, 2012 | By Jignesh Parmar
Energy and Power
Using Protective Relay For Fighting Against Faults
Introduction to Protective Relay Working Principle of Protective Scheme What is Relay? Functions of Protective Relay Desirable qualities of protective relaying Terminology of protective relay History of Protective Relay Types of Relays Types of Relay based on Relay Operation Mechanism… Read more
Dec 17, 2012 | By Jignesh Parmar
High Voltage
Electrical Safety Standards for LV/MV/HV (Part-3)
Continued from part 2 – Electrical Safety Standards for LV/MV/HV (Part-2) Standard: Northern Ireland Electricity (NIE), 6/025 ENA Code: Indian Electricity Rules / Central Electricity Authority Right of Way Clearance (As per GETCO Standard) Minimum clearances between Electrical Lines crossing… Read more
Nov 14, 2012 | By Jignesh Parmar
