Gas-insulated substations (GIS) have been used in power systems over the last three decades because of their high reliability, easy maintenance, small ground space requirement, etc. This article is an …
Depending on the type of construction used, the transformers are classified into two categories. Core type Transformer Shell type Transformer Difference between Power Transformer and Distribution Transformer Core Type Transformer In …
We have already given an introduction to substation earthing system in an article published earlier. Today we are going to discuss the design of substation earthing system. Before 1960s the …
Transformer oil testing is just like a blood test in the human body. A blood test provides a doctor with a wealth of information about the health of a patient. …
Definition The ratio of output in kWh to the input in kWh of a transformer over a 24-hour period is known as all day efficiency. ηall-day = Output in kWh …
Primary and Back-up Protection Primary protection (Main protection) is the essential protection provided for protecting an equivalent/machine or a part of the power system. As a precautionary measure, addition protection …
What is Load Forecasting? Electrical energy cannot currently be stored in large amounts. It has to be generated whenever there is a demand for it. It is, therefore, imperative for …
In today’s post, we will go through a video that explains the working of single phase and three phase transformers in detail. We have already discussed the working principle of a transformer and Why Transformers are Rated in kVA, Not in kW? Watch the video below..
What is Corona? The phenomenon of violet glow, hissing noise and production of ozone gas in an overhead transmission line is known as the corona. In this article, we will study …
What is the Rectifier Transformer? Rectifier transformers are different from normal power and distribution transformers because they are special transformers made for industrial application. A Rectifier transformer is a special application …
Current Transformers (CT’s) are instrument transformers that are used to supply a reduced value of current to meters, protective relays, and other instruments. Current Transformers provide isolation from the high voltage …
Definition According to IEEE/ANSI Std. an electrical bushing is defined as “an insulating structure, including a through conductor or providing a central passage for such a conductor, with provision for mounting a …
An “air break switch’ is a switchgear device that uses air as the dielectric. Air Break Switches (ABS) are widely installed throughout distribution networks for use as both isolation or …
What is a Protective Relay? The protective relay was invented more than 160 years ago. During the last 60 years, it has undergone considerable change, the most obvious of which …
Did you ever think about what will happen to a transformer on dc supply? In this article, you will learn why the transformer does not work on the DC supply. …
A transformer is a static piece of equipment used either for raising or lowering the voltage of an AC supply with a corresponding decrease or increase in current. It essentially …