Transformers Magazine Vol. 6 Issue 4

T23 Digital 1
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Dear Readers,

I believe you will all agree that the digitalization is a trend that has been dominant in our industry for the last two years. During that time, the so-called digital transformers which are designed for connectivity, digitalization and exchange of data and transformer parameters appeared on the market. Interestingly, Siemens called their digital transformer Sensformer, demonstrating the great trust in the concept. They are sending the message that it is not just the transformer with a new functionality, but much more. Dr. Beatrix Natter often emphasises that factories make digital model first, and only when the digital model I.e. digital twin completely meets all the requirements, the physical twin is being manufactured. Apart from added value for transformer users and grid operators, she emphasises new learning possibilities, but also attracting the new generation of engineers by applying such concepts.

Megacities

Resilient solutions for electrical power supply   Motivation Cities offer higher living standards than rural areas, which motivates people in areas of lower standards to move to urban areas,...

Interview with Cai Zixiang, Chairman, PTTX

PTTX supplies global market PTTX is a manufacturer of transformer cores with more than 200 employees that uses automated intelligence in its manufacturing process. From our smart factory we...

Column: Transformer lifecycle

Transformer measurement policies for optimum asset management value   Introduction Power transformers are crucial components in our systems for transmission and distribution of electrical power. They allow electrical power...

ABB’s oil-free transformers

Environment comes first with ABB’s oil-free transformers Oil-filled transformers are the predominate transformer technology in use today. Nonetheless, hazardous risks to humans and the environment still exist such as...

Ester transformer designs

Eco-friendly ester liquid transformer designs   Ester liquids have been used in transformers for insulation and cooling purposes for over 20 years. These liquids greatly reduce environmental impact and...

Driving down losses

Driving down energy losses in transformers   With some 5 percent of global electrical energy being consumed by transformer losses, energy efficiency has become one of the main drivers...

Transformers for renewables

ABB transformers for renewable applications   Wind and solar are the fastest growing sources of electric power today for a few simple reasons: They are renewable energy sources that...

Column: Water in transformer

How water affects transformer oil quality and helps monitor its aging   As it is well known, transformer insulation consists of two major components – oil (liquid insulation) and...

On-line PD measurement and monitoring

Easy on-line partial discharge measurement and monitoring   Effective in-service condition assessments Periodic on-line PD measurement and monitoring are considered the most reliable methods of evaluating the insulation condition...

Column: Transformer maintenance

A century of dissolved gas analysis – part II Introduction With time, the size of the transformer increased exponentially both in power and voltage. Although huge improvements have been...

Connection technology

Connection technology that pays for itself   Pluggable connection technology versus fixed bushing Flexibility is the byword of our time, yet it poses big challenges for energy network operators....

Column: Condition monitoring

Evidence-based asset management   Those charged with managing assets in any electric, gas, or water utility face similar challenges when trying to meet their respective companies’ obligations to the...

Mineral oils

Not all mineral oils are equal Abstract The life of a transformer is linked to the fundamental role of insulating liquids to dissipate heat and protect the transformer’s solid...

Retrofitting bushings

Retrofitting of 245 kV OIP bushing with longer oil-end Abstract This article focuses on an original case history of replacement of a leaky 245 kV OIP bushing of a...

Eco design

Optimization of transformers efficiency   Abstract Following the first article published in July concerning the optimisation of total cost using the PEI for large power transformers, this article is...