A 765 kV transmission line is an extra-high-voltage (EHV) overhead power transmission system used to transfer huge amounts of electrical power over very long distances with minimal losses. It is one of the highest voltage levels used in AC power transmission and plays a vital role in modern national and inter-regional power grids. Key Point: […]
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An Expulsion Type Lightning Arrester is a protective electrical device used in power distribution and transmission systems to safeguard equipment from high voltage surges caused by lightning strokes and switching operations. It is commonly installed on distribution lines up to 33 kV voltage level. The arrester works on the principle of spark-over and arc extinction
A valve type lightning arrester is one of the most widely used protective devices in power systems, particularly in transmission and distribution networks. Its main function is to protect electrical equipment—such as transformers, generators, lines, and substations—from high voltage surges caused by lightning, switching operations, and transient faults. Simply stated: A valve type lightning arrester
Definition Operating Principle Derivation Types Comparison Table Advantages / Disadvantages Applications 1. Definition of Distance Relay A distance relay (or impedance relay) is a protection device used on power transmission lines that estimates the distance to a fault by measuring the apparent impedance between the relay location and the fault point. It measures terminal voltage
A Gas Insulated Substation (GIS) is a high-voltage substation in which the primary components are enclosed in an insulating gas medium, typically sulfur hexafluoride (SF₆). GIS is known for its compact and enclosed design, which makes it suitable for urban or restricted spaces. Below, we explore its definition, construction, working, types, advantages, disadvantages, and applications.
A single-line diagram (SLD) is a simplified representation of an electrical power system that uses a single line to show all three phases of a three-phase system. It highlights the flow of power from generation to distribution, incorporating essential system components.
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A static relay is an advanced type of protective relay that uses electronic, magnetic, or other solid-state components instead of the conventional electromagnetic or mechanical relays. Static relays are more reliable, faster, and compact, making them suitable for modern protection systems in electrical power networks.
A solar power plant is a facility that converts sunlight into electricity using photovoltaic (PV) technology or concentrated solar power (CSP). These plants are a clean and renewable source of energy, reducing carbon emissions and dependence on fossil fuels. Solar power plants are designed for large-scale electricity generation, often integrated into national grids or used
Power system protection involves the design, implementation, and maintenance of equipment and systems that detect and isolate faults in electrical power systems. The primary goal is to ensure the safety of the system, minimize damage to equipment, and maintain reliable power supply to consumers. Protection systems utilize a combination of protective relays, circuit breakers, fuses,
An off-grid solar system is a standalone power system that operates independently of the utility grid. It uses solar panels to generate electricity, which is stored in batteries for use when sunlight is unavailable. These systems are designed to provide electricity in remote or rural areas where grid power is inaccessible or unreliable. Off-grid systems