EEPower

Latest Transformers Technical Articles

Categories

Primary Distribution Systems—Part 4: Fault Levels and Short Circuits

Primary Distribution Systems—Part 4: Fault Levels and Short Circuits

Learn about fault levels and short-circuit protection for medium-voltage distribution. We’ll examine current sources, fault types, symmetrical…


Primary Distribution Systems—Part 3: Overhead and Underground Choices

Primary Distribution Systems—Part 3: Overhead and Underground Choices

Overhead vs. underground power distribution: Learn the cost, reliability, and design trade-offs for medium voltage power systems across urban,…


Primary Distribution Systems—Part 1: Design of Feeders and Laterals

Primary Distribution Systems—Part 1: Design of Feeders and Laterals

This article discusses primary distribution system transport of medium-voltage power from substations via feeders to local transformers to ensure…


Distribution System Fundamentals—Part 1: Networks

Distribution System Fundamentals—Part 1: Networks

This overview develops distribution’s role within the power system hierarchy, its functional objectives and constraints, and the common voltage…


Substation Commissioning and Testing—Part 3: Field Testing

Substation Commissioning and Testing—Part 3: Field Testing

Substation field testing ensures long-term reliability. It verifies instrument transformers , circuit breakers, and protection relays against…


Substation Commissioning and Testing—Part 2: Pre-Commissioning Inspections

Substation Commissioning and Testing—Part 2: Pre-Commissioning Inspections

This article walks through pre‑commissioning inspections and electrical tests commonly used in utility and industrial substations, translating…


Substation Commissioning and Testing—Part 1: Scope and Workflow

Substation Commissioning and Testing—Part 1: Scope and Workflow

Learn how substation commissioning verifies design intent and system integration through FAT, SAT, cold (pre-energization), and hot…


The Hidden Costs of Outdated Power Plant Practices — And How to Fix Them Fast

The Hidden Costs of Outdated Power Plant Practices — And How to Fix Them Fast

Building integrated and modern systems enable resilient, efficient, and safer operations that…


Switching and Converter Substations

Switching and Converter Substations

This article explores the various functions of switching and converter substations, including network reconfiguration, fault isolation, and AC/DC…


Substation Components—Part 1: Power Transformers

Substation Components—Part 1: Power Transformers

This article explores the role of power transformers in substations, highlighting their design, configurations, cooling methods, tap-changing…


Understanding the Role of Substations Along the Transmission Path

Understanding the Role of Substations Along the Transmission Path

This article examines the functions of four different types of substations within the electrical grid: step-up, step-down, transmission, and…


PFC Control Methods Overview

PFC Control Methods Overview

Power factor correction (PFC) is needed for AC-DC power supplies with input power greater than 75 W. This article offers an overview of the most…


Achieving Galvanic Isolation and Protection With Solid-State Isolators—Part 1

Achieving Galvanic Isolation and Protection With Solid-State Isolators—Part 1

In Part 1 we introduce solid-state isolators (SSIs) with coreless transformer tech, covering architecture, energy transfer, built-in protection,…


Performance Index-Based Security Assessment and Screening Effect: Part 2

Performance Index-Based Security Assessment and Screening Effect: Part 2

Learn how to address the screening effect in performance index-based security assessment in power systems.


Performance Index-Based Security Assessment and Screening Effect: Part 1

Performance Index-Based Security Assessment and Screening Effect: Part 1

Learn how to conduct performance index-based security assessment in power systems and how the screening effect impacts the accuracy of the assessment.


Understanding Capacitance in Overhead Transmission Lines

Understanding Capacitance in Overhead Transmission Lines

Learn how capacitance in high-voltage overhead transmission lines forms and is influenced by the earth, with derivations for single and three-phase…


Understanding Transient Recovery Voltage in HV Power Systems

Understanding Transient Recovery Voltage in HV Power Systems

This article explores how transient recovery voltage influences high-voltage circuit breaker performance and examines how circuit configurations…


1500 V DC-Link Architecture is Essential to Solve the Need for More Power

1500 V DC-Link Architecture is Essential to Solve the Need for More Power

Especially when renewable energies are used to supply the grid the use of power semiconductors becomes mandatory. One of the key questions in these…


Stabilizing HVDC Links With Adaptive Controls

Stabilizing HVDC Links With Adaptive Controls

Learn how to stabilize high-voltage direct current links through converter performance analysis and by implementing adaptive controls to tackle…


Substation & Switchyard Design Considerations: Size, Load, Cost

Substation & Switchyard Design Considerations: Size, Load, Cost

This article examines the factors crucial in determining the size, load, and cost of substations and switchyards.