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Energy and Power

## Shaping and connecting rigid busbars in low voltage switchgear

Energy Efficiency

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High Voltage

# Analysing the costs of High Voltage Direct Current (HVDC) transmission

Introduction to HVDC Cost structure of HVDC Assumptions made in the price calculations Thyristor based HVDC system versus high voltage AC system VSC based HVDC system versus an AC system… Read more

Aug 06, 2014 | By Edvard Csanyi

Energy and Power

# 7 most known high voltage insulation methods you should know

Before getting to the specifics of each material, there are a couple of issues that apply to all materials. First, it is important that the insulating material is homogeneous. This… Read more

Aug 04, 2014 | By Edvard Csanyi

High Voltage

# An Example of Choosing 138 kV Line Circuit Breaker

To better understand a process of high voltage equipment selection, let’s discuss an example of choosing 138 kV Line #3 Circuit Breaker, shown in Figure 1, assuming that the following… Read more

Jul 23, 2014 | By Edvard Csanyi

High Voltage

# How to mitigate effects of very fast transients (VFT) on HV equipment

The level reached by very fast transients (VFT) overvoltages originated by disconnector switching or line-to-ground faults inside a gas insulated switchgear (GIS) are below the basic insulation level (BIL) of… Read more

Jun 11, 2014 | By Edvard Csanyi

High Voltage

# An example of calculating the technical losses of T&D lines

There are two types of losses in transmission and distribution line. Technical Losses and Commercial Losses. It’s necessary to calculate technical and commercial losses. Normally technical losses and commercial losses… Read more

Apr 25, 2014 | By jiguparmar

High Voltage

# Hey Mom, look at that big HVDC Transformer!

HVDC transformers are key components of HVDC stations. HVDC converter and inverter stations terminate long-distance DC transmission lines or DC sea cables. This type of transformer provides the interface between… Read more

Mar 19, 2014 | By Edvard Csanyi

High Voltage

# 8 main disadvantages of HVDC transmission

Few weeks back I posted an article about advantages of HVDC over HVAC transmission systems. Advantages of HVDC are numerous and very well recognized, but like everything on this earth… Read more

Jan 10, 2014 | By Edvard Csanyi

Energy and Power

# Electrical Thumb Rules You MUST Follow (7)

Continued from: Electrical Thumb Rules You MUST Follow (Part 6) Overhead conductor / cable size Transmission / distribution  line (span, height of tower) Types of towers Tower swing angle clearance (metal… Read more

Dec 23, 2013 | By jiguparmar

High Voltage

# What are the main advantages of HVDC over HVAC transmission

Despite alternating current being the dominant mode for electric power transmission, in a number of applications, the advantages of HVDC makes it the preferred option over AC transmission. Examples include:… Read more

Dec 18, 2013 | By Edvard Csanyi

High Voltage

# 15 hypothesis responsible for the aging of composite insulators

Most technical work concentrates on the aging of nonceramic insulators and the development of test methods that simulate the aging process. Transmission lines operate in a polluted atmosphere. Inevitably, insulators… Read more

Dec 04, 2013 | By Edvard Csanyi

High Voltage

# General principles of electricity supply systems

The generation of electricity in most modern power stations is at 25 kV, and this voltage is then transformed to 400 kV for transmission. Virtually all the generators of electricity… Read more

Nov 25, 2013 | By Edvard Csanyi

High Voltage

# Five special transformers for industrial applications you should know about

A number of industry applications require specific industrial transformers due to the usage of power (current) as a major resource for production. Electric arc furnaces (EAF), ladle furnaces (LF) and… Read more

Sep 23, 2013 | By Edvard Csanyi

High Voltage

# Talking about HV shunt reactor switching (part 2)

Continued from first part: Talking About HV Shunt Reactor Switching (part 1) Scope (explained in previous part) Shunt reactors application (explained in previous part) Closing operation (explained in previous part)… Read more

Jul 31, 2013 | By Nicola

High Voltage

# Talking about HV shunt reactor switching (1)

These notes aim to give basic idea of the main criticalities related to HV shunt reactor switching, particularly in terms of voltage, and how such problems are faced and solved… Read more

Jul 29, 2013 | By Nicola

High Voltage

# Commissioning of HV Panel – Operational and Functional Checkup

The main objective of the test is to check the proper operation function of the circuit breaker; in this test we do the following: This test is conducted by manual,… Read more

Jul 17, 2013 | By Edvard Csanyi