In this post we will provide you an overview of 380kV Gas-Insulated Switchgear (GIS). This is our 3rd post that is part of Extra High Voltage EHV Substation Design & 380kV Substation Design. If you are new on our website it is recommended to read first the below Posts What is Switchgear? Switchgear is a general term…
Technical Posts
380kV Gantries & Gantry Equipment
380kV Gantries & Gantry Equipment is our first post that is a part of Substation Layout Drawing & Explanation each equipment in a 380kV BSP. Gantries are the tall steel structures at the extreme ends of the yard that serve as termination points for overhead transmission lines (OHTLs) entering the substation at 380kV. In this…
Inside a 380kV BSP: Overall Layout Drawing Explained
In today’s rapidly growing power networks, Bulk Supply Points (BSPs) play a vital role in ensuring reliable electricity transmission and distribution. A BSP is essentially the bridge between high-voltage transmission lines (380kV in Saudi Arabia) and the sub-transmission network (132kV) that feeds urban centers and industrial zones. While single-line diagrams (SLDs) show the electrical connections,…
Power Transformer Testing Overview
In this post we present you Power Transformer Testing Overview as per IS:2026 (Part I). Power transformers are critical components in the electrical power system, and their reliability is ensured through rigorous testing as specified in IS:2026 (Part I) – Power Transformers: General Requirements. These tests are categorized into Type Tests, Routine Tests, and Special…
Al-BABTAIN submits lowest Bid for 380kV AFIF PV-2 BSP #9102
Al-BABTAIN Contracting submits lowest Bid for 380kV AFIF PV-2 BSP #9102. Afif PV-2 BSP is Located in COA. Al-BABTAIN submits lowest Bid of 1175M SAR. The Client is SEC & the project consists of CONSTRUCTION OF NEW 380KV BSP AFIF PV-2 # 9102 AND E EXPANSION AT AR RASS#9095 & MOWAIH#22510The Project schedual is very tough and…
Al Gihaz submits lowest Bid for 380kV AFIF PV-1 BSP #9101
Al Gihaz Contracting Company starts year 2025 with a big win as they submits lowest Bid for 380kV AFIF PV-1 BSP #9101. Afif PV-1 BSP is Located in COA. Al Gihaz submits lowest Bid of 960M SAR. The Client is SEC & the project consists of CONSTRUCTION OF NEW 380KV BSP AFIF PV-1 # 9101…
SEC Invites Bids for Mega 380kV BSP projects
In the first week of March 2025, SEC Invites Bids for Mega 380kV BSP projects. These BSPs will be connected to different PV & Wind Plants in various areas inside Kingdom. The First Phase was started in July 2024 when Saudi Electricity announced over 16 BSP projects worth more than 8 billion SAR. As per recent Post from…
Vector Group of Transformers
Vector Group of Transformers, indicates the phase relationship also called phase difference (angle shift) between the High Voltage and Low Voltage windings. It tells you how the windings are connected (star or delta) and the phase displacement between them. This is important for ensuring proper synchronization and operation in power systems. This is our 6th post that…
Top Excel Functions Every Engineer Should Master
Excel is an indispensable tool for engineers, offering powerful functions to simplify complex calculations, analyze data, and optimize workflows. In this Post, we’ll explore the top Excel functions every engineer should master to enhance productivity and tackle technical challenges with ease. COUNTIFS The COUNTIFS function in Excel is used to count the number of rows that meet multiple…
Sag templates & Curves
Sag templates are a critical tool in the design and construction of transmission lines. We usually use these to determine the vertical position of conductors (and ground wires) under specified design conditions, ensuring that the transmission line provides adequate clearance to the ground and other facilities. Below is a detailed explanation of sag templates based…