Electrical Design - ohtldesign.com

Understanding HVDC Power Transmission Systems: LCC vs. VSC Technologies

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LCC vs. VSC HVDC Systems: Key Differences and Advantages In the world of electrical power transmission, High Voltage Direct Current (HVDC) systems play a crucial role in long-distance power transmission and integration of renewable energy sources. These systems are primarily divided into two types based on the converter technology used: In this article, we will […]

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Right-of-Way (ROW) Width in Transmission Lines: Definition, Calculation & Example(380kV)

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What is Right-of-Way (ROW)? In transmission line engineering, the Right-of-Way (ROW) is a strip of land acquired to construct, operate, and maintain overhead power lines. The transmission line is usually centered within this corridor, and the ROW ensures safety, reliability, and accessibility of the system. ROW width depends on: Input Data Required for Right-of-Way (ROW)

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Understanding Transmission Line Unbalance and Transposition: A Simple Guide

4 Comments / Electrical Design / OHTL DESIGN

Transmission lines are essential for moving electrical power from power stations to homes, businesses, and industries. However, when transmission lines are not properly balanced, it can cause problems. In this guide, we’ll explain transmission line unbalance, what transposition is, and how both affect power transmission. By the end, you’ll understand why these concepts are important

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PLS-CADD Workflow: A Complete Guide to Overhead Line Design and Optimization

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Introduction Designing and analyzing overhead transmission lines requires a powerful and systematic approach. PLS-CADD (Power Line Systems – Computer Aided Design and Drafting) is one of the most widely used software solutions in the industry. It provides a structured workflow that covers everything from terrain modeling to construction reports. This article explains the step-by-step PLS-CADD

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Basic Design Requirements for Overhead Transmission Lines in Saudi Arabia and the Middle East

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Overhead transmission lines form the backbone of modern power systems, carrying electricity from generating stations to cities, industries, and rural areas. In regions like Saudi Arabia and the Middle East, the design of these lines must take into account unique challenges such as desert climates, coastal corrosion, strong winds, and lightning activity. This article explains

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Transmission Line Insulators: Types, Performance, and Design Considerations

1 Comment / Electrical Design / OHTL DESIGN

Reliable performance of high-voltage transmission lines depends heavily on the proper selection of insulators. Insulators not only support conductors mechanically but also ensure electrical insulation under harsh weather and environmental conditions. Their design and selection vary depending on whether the line passes through coastal or inland areas, the pollution level, and the operating voltage. General

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Method of Statement: Vibration Testing in OHTL

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Introduction Overhead Transmission Lines (OHTL) are constantly exposed to natural wind, which can induce Aeolian vibrations and sub-span oscillations on conductors and Optical Ground Wire (OPGW). If uncontrolled, these vibrations may cause conductor fatigue, clamp loosening, spacer damage, or OPGW breakage.To ensure system reliability, utilities conduct field vibration measurements in accordance with international standards such

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Anti-Climbing Barriers for Transmission Towers: Importance, Standards, and Design

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An anti-climbing barrier is a protective guard installed around the lower section of transmission towers. Its main role is to block unauthorized access and ensure that only qualified personnel can approach or climb the structure. A typical barrier includes: In essence, it’s a steel shield that ensures safety at the base of every tower. Why

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How to Assemble OPGW Accessories on Terminal Towers

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In modern power transmission networks, Optical Ground Wire (OPGW) plays a vital role by combining two critical functions: grounding and high-speed data communication through fiber optic cables. For the reliability and safety of transmission lines, proper OPGW accessories assembly on terminal type towers is essential. This article provides a detailed overview of the main OPGW

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Tower Testing in Power Transmission: A Complete Guide

14 Comments / Electrical Design, Uncategorized / OHTL DESIGN

Introduction Transmission line towers are the backbone of modern power grids. To ensure these steel structures can withstand extreme wind, weight, and environmental stresses, they must undergo full-scale tower testing. This process is carried out in specialized tower testing stations using test beds, calibrated load cells, and advanced rigging arrangements. Tower testing is not only

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