Hundreds of mechanical design & simulation & manufacturing

My profession is about electrical & electronics but..

In previous days I was searching my computer for a mechanical design an I saw that, despite being an electrical & electronics professional,, I designed hundreds of mechanical structures, conducted many simulations and got nearly all of them manufactured !

Measuring Huge Currents By Using FARADAY EFFECT (İng)

Measuring Huge Currents By Using FARADAY EFFECT

Keywords: #faradayeffect #magnetooptic #current #measurement #phoenixcontact #innovation #rnd #project #training #sensor #powerquality #distribution

We installed Lightning Monitoring Systems from Phoenix Contact in one of our approved R&D projects.. Brief goal of the project is to analyse the characteristics of the lightning strikes and to develop precise measurements.

Our Brilliant trainee’s are also involved in the project. Now, by explaining how the sensors work, we would like to share some information about the Magneto Optic phenomena and technology behind this great technique of measuring huge currents with high precision.

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Ligues des champions (İng) – Linkedin

Jump into the dataworld..

When I saw the banner on their webpage I feel confused. Forbes, the well known publisher goes into the dataworld ? Why ?

In Smart City Report from Deloitte, I highly recommend everybody to read throughly, it is mentioned that smart cities market will increase significantly over the next five years to be anywhere from over US$400 billion to over US$1,5 trillion by 2020 and ICT & Media is in short fuse, big bang side of the picture.

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Power Quality , In Short (İng) – Linkedin

Simply put, power quality is a measure of an ideal power supply system. In general, power quality as a concept is no different from the notion of quality for goods or services of all kinds. But while quality is a general concept that includes subjective attributes like personal likeability, taste or gut-feel, power quality is an objective, measurable and clear metric that tells us about the state of the power being supplied.

Broadly, PQ may be defined as a provision of voltages and a system design so that the user of electric power can utilise electric energy from the distribution system successfully, without interference on interruption.

Figure: Disrupted three phase voltage

 

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Akıllı Ol ! – Linkedin

ŞEBEKEYE NASİHATLER..

Elektrik, icadından bu yana hızla büyüyen ve kullanım alanı genişleyen bir enerji çeşidi.

Üretilmesi, iletimi ve dağıtımı diğer enerji türlerine göre çok daha kolay ve şehirler dolusu insan ihtiyaçlarının büyük çoğunluğunu elektrik enerjisinden karşılıyor. Ana üretim istasyonundan kilometrelerce uzağa iletkenler ve yardımcı sistemler ile taşınabiliyor.

Bir şehrin ihtiyacını, elektrik enerjisi yerine, hareket enerjisi olarak çarklar, miller ve dişlilerle kilometrelerce uzaklıktaki üretim santralinden taşımaya çalıştığımızı düşünebiliyor musunuz ?

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reactive power explained

Why Do We Compansate Reactive Power ?

Reactive Power & Compansation

May be the most important one is the reactive power component that needs to be supplied along with active power. Depending on the current and voltage waveforms, reactive power can be leading or lagging (one of the waveforms leads or lags the other). Active power contributes to the energy consumed, or transmitted, meanwhile reactive power does not contribute to the energy. Reactive power is an inherent part of the ‘‘total power.’’ that is created because of the current – voltage seperation in the circuit.

Reactive power is either generated or consumed in almost every component of the system including generation, transmission, and distribution and of course by the loads. The impedance of a branch is very important while defining the reactive and active power. A circuit in an AC system (not ideal) consists of two components, resistance (active power) and reactance (reactive power).

reactive power explained

Reactance can be either inductive or capacitive, which contribute to reactive power in the circuit.Most of the loads are inductive (the ones that do mechanical work), and must be supplied with lagging reactive power. It is economical to supply if this reactive power is supplied to the load nearby in the distribution system. Hence we have the term, reactive power compensation.

Reactive power compensation in power systems can be either shunt or series. Shunt compansation is the most common one.

Shunt Reactive Power Compensation

Since most loads are inductive and consume lagging reactive power (voltage leads current) the compensation required is usually supplied by leading reactive power (capacitors). Shunt compensation of reactive power can be employed either at load level (prefered), substation level, or at transmission level.

Compansation can be capacitive (leading) or inductive (lagging) reactive power, although in most cases capacitive compansation is employed. The most common form of leading reactive power compensation is by connecting a series of shunt capacitors to the line, but since the reactive power of the load changes, these capacitors (banks) should be controlled in a sequence.

Shunt Capacitors

reactive power compensation, shunt capacitors

Shunt capacitors have great effects while distributing energy, most common ones are:

1.Voltage regulation:

Shunt capacitors increases voltage at around %5. The main reason that shunt capacitors are installed at substations is to control the voltage within required levels. Load varies over the day, with very low load during midnight and peak  values occurring in the evening. Shape of the load curve also varies from day to day, with weekend load typically low.

As the load varies, voltage at the substation bus and at the load bus varies. Since the load power factor is most of the time lagging, a shunt connected capacitor bank at the substation can raise voltage when the load is high. The shunt capacitor banks can be permanently connected to the bus (fixed capacitor bank) or can be switched when needed.

2.Reducing power losses

Compensating the load lagging power factor with the bus connected shunt capacitor bank improves the power factor and reduces current flow through the distribution lines, transformers, generators, etc. This will reduce power losses (I2R losses) in these equipments.

3.Increased utilization of equipment

Shunt compensation with capacitor banks reduces kVA loading of lines, transformers, and generators, which means with compensation they can be used for delivering more power with high efficiency and without overloading the equipment.