Transformer no-load loss and excitation-current measurements

A transformer dissipates a constant no-load loss as long as it is energized at constant voltage, 24 h a day, for all conditions of loading. This power loss represents a… Read more

Mar 27, 2019 | Testing and Commissioning

Remote control systems and communication devices in secondary substations

This technical article deals with the devices that makes possible the interface with the primary process (e.g. cables and switchgear) in a secondary substations from a central point, like central… Read more

Mar 25, 2019 | Power Substation

6 system requirements of HV and EHV circuit breakers

With the phenomenal growth of the power system (EHV and HV) the duties that a circuit breaker is called upon to perform, besides the ability to handle short circuits, have… Read more

Mar 20, 2019 | Testing and Commissioning

6 common bus configurations in substations up to 345 kV

This technical article explains six most common bus configurations used for distribution, transmission, or switching substations at voltages up to 345 kV. Presented single line diagrams and layouts are generalized… Read more

Mar 18, 2019 | Power Substation

Practical approach in design and installation of detuned capacitor banks

During last two or three decades, the number of nonlinear electrical loads inside all types of buildings and facilities (residential, business, commercial and industrial) has been significantly increased. All that…...

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Mar 15, 2019 | Power Quality ♛

Pilot schemes for transmission line protection

Pilot schemes simultaneously measure and monitor system parameters at all terminals of a transmission line, local and remote, and then respond according to their predetermined functions. These schemes require the… Read more

Mar 13, 2019 | Protection

Control house at HV/EHV switchyards and substations (construction, layout and functions)

Nowadays, the control house is one of the main parts in every modern HV switchyard and substation. Why? Simply, because substations have grown in complexity and equipment such as circuit… Read more

Mar 11, 2019 | Power Substation

Primary and secondary power distribution systems (layouts explained)

Primary distribution systems consist of feeders that deliver power from distribution substations to distribution transformers. A feeder usually begins with a feeder breaker at the distribution substation. Many feeders leave… Read more

Mar 06, 2019 | Power Substation

Earthing facts and terms you should always remember

While working as an electrical engineer, there are a dozen things you must remember, especially the ones that concern the safety. Whether you are in the electrical design field or… Read more

Mar 04, 2019 | Energy and Power

Three essential features of automation in power distribution systems

One may wonder why are everybody talking more and more about automation in power distribution. Aren’t we already automated? Well, we are not. It can always be better, faster, with…...

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Feb 28, 2019 | Premium Content ♛