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Electrical Power Transmission is the process of transferring electrical energy from power plants to substations near populated areas using high-voltage transmission lines. It enables efficient long-distance delivery of electricity by reducing energy loss through the use of transformers that step up voltage for transmission and step it down for distribution. The system includes conductors, towers, insulators, and switching equipment to maintain a stable and reliable power supply.
ACSR means Aluminum Conductor Steel Reinforced. ACSR is the most standard choice for high‐voltage overhead transmission lines. An ACSR consists of mainly two parts. It has multiple layers of pure aluminum strands for carrying current. It also has a central core of galvanized steel to provide tensile strength to the conductor. The aluminum strands are … Read more
A Gap-type HTLS conductor is a special type HTLS conductor. It exhibits a separate high strength low elongation steel core surrounded by layers of thermal resistant aluminum alloy strands. The typicality of a gap type HTLS conductor is, it maintains a deliberate annular gap between the core and the first layer of aluminum alloy strands. … Read more
The electricity demand increasing tremendously from last few decades. The increasing demand of lands and few government policies are the constraints in expanding transmission infrastructure. Hence there is no way other than increasing the ampacity of the existing transmission networks. This increases the need for High-Temperature Low-Sag (HTLS) conductors. Among the various HTLS conductors, INVAR … Read more
Power Transmission Challenges4 The main drawback of conventional ACSR (Aluminum Conductor Steel Reinforced) conductors is their limited thermal capacity. These conductors are typically designed to operate at a maximum temperature of 75°C. Although some modern variants can withstand up to 85°C, exceeding these temperature limits by increasing current leads to higher thermal expansion, which in … Read more
Type Tests as per IS 398 Part-5 Routine Tests on ACSR Conductors These tests are performed as per IS 398 Part-5 Acceptance Tests on ACSR Conductors as per IS 398 Part-5
A Digital Teleprotection Coupler (DTPC) is often referred as a Digital Protection Coupler (DPC). It serves as a high-speed, reliable interface for transmitting protection commands between substations over a communication medium (OPGW). Typically it is used for carrier protection of transmission lines. Working Principle First, a protective relay such as a digital distance relay or … Read more