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Jan 05,2021
Research A recent ZDDQ survey shows that the global static VAR generator market is projected to grow remarkably owing to the persistent demand for stable power supply from the consumers. Knowing from Fortune Business Insights, in an upcoming report, titled, “Static VAR Generator“ Market Size, Share & Industry Analysis, By Type (Thyristor Based, MCR Based), By End-User (Electric Utility, Renewa...
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Jan 21,2021
ZDDQ Engineers give an example for reference, An Alternator is supplying a load of 650 kW at Power factor 0.65. What size of Capacitor banks (kVAR) is required to raise the Power Factor to unity (1 or >0.95)? And how many more kW can the alternator supply for the same kVA loading when P.F improved. Supplying kW = 650 kW Original P.F = Cosθ1 = 0.65 Final P.F = Cosθ2 = 1 θ1 = Cos-1 = (0.65) = 49°...
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Feb 03,2021
HV/MV Power factor correction is directly related to the different aspects that assist the technical management of transport and distribution networks. These are: Power quality This involves the increase in the levels of voltage in substation busbars and line ends. Optimisation of the installation's cost of operation In other words, the decrease of the reactive energy and, therefore, the reduction...
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Feb 18,2021
To all clients and friends, 2021 is Chinese Niu Year and Happy Chinese New Year. Best wishes to all our friends and clients from all over the world. Happy new year 2021 wishes for friends families. Warmest thoughts and best wishes for a Happy New Year. May peace, love, and prosperity follow you always. We have resume work On Feb 18th. Going on supporting power quality solutions Low voltage capacit...
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Mar 11,2021
Basic Datas of Harmonics and VFD Harmonic Distortion Harmonic Distortin is a measure of the amount of deviation from a pure sinusoidal wave form that can be caused by a non-linear load (a VFD is considered a non-linear load because it only draws current from the power line as required). Distorted Waveform Distorted Waveform = fundamental (50Hz sinusoidal waveform) + multiples of the fundamental fr...
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Mar 20,2021
A capacitor bank is a grouping of several identical capacitors interconnected in parallel or in series with one another. These groups of capacitors are typically used to correct or counteract undesirable characteristics, such as power factor lag or phase shifts inherent in alternating current (AC) electrical power supplies. FEATURES: Power factor correction by multi step design Standard & detu...
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Mar 30,2021
Why harmonics analysis? When a voltage and/or current waveform is distorted, it causes abnormal operating conditions in a power system such as: Voltage Harmonics can cause additional heating in induction and synchronous motors and generators. Voltage Harmonics with high peak values can weaken insulation in cables, windings, and capacitors. Voltage Harmonics can cause malfunction of different elect...
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Apr 12,2021
Power Quality Solutions and Energy Savings One of the most significant changes in the Power Quality industry in the past five years is the method of selling Power Quality solutions. Originally, Power Quality solutions were sold as an insurance policy to avoid potential damage from power disturbances such as transients,voltage sags, interruptions or harmonics. Today, many Power Qu...
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May 05,2021
A SECONDARY SOURCE Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations. Various common phenomena are related to electricity, including lightning, static electricity, electric heating, elect...
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May 13,2021
The climate is changing - but are you? Changes in the way you live your life - both big and small - can help you reduce your own personal carbon footprint, and also encourage policy makers to act for the good of the planet. Below is a list of several easy things you can do right now to help fight climate change. The greatest threat faced by this generation is climate change. Because without a habi...
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Jul 22,2021
An example of how to calculate the capacity of reactive power (kVAr)? An Motor is supplying a load of 700 kW at a P.F (Power factor) of 0.65. What size of Capacitor in kVAr is required to raise the P.F (Power Factor) to unity (1)? And how many more kW can the motor supply for the same kVA loading when P.F improved. Supplying kW = 700 kW Original P.F = Cosθ1 = 0.65 Final P.F = Cosθ2 = 1 θ1 = C...
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Aug 24,2021
Why does the power factor need to be corrected at MV? Reactive power compensation is essential for the correct technical and economical management of an MV Networks. Its benefits are: Economic benefits — Reduced billable reactive energy costs (surcharges by country and tariff) — Reduced hidden economic cost from the Joule effect in transport lines — Enables a better use ratio (kW/kVA) for installa...
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Sep 13,2021
Benefits by installing power factor correction systems? Power factor correction systems provide much benefit: Reduced electricity utility bills Your electric utility provides working (kW) and reactive power (kVAR) to your plant in the form of apparent power (kVA). While reactive power (kVAR) doesn’t register on kW demand or kW hour meters, the utility’s transmission and distribution system must be...
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Oct 09,2021
Power capacitors are very beneficial in power networks. They provide reactive power required by motors, transformers, etc. This increases the transmission capacity and reduces losses thanks to higher power factors. They enable the power factor targets of the utilities to be met. Power capacitors and series reactors are also a key component in various filter solutions that reduce harmonic cont...
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Oct 15,2021
Overview Rapid growth of inductive electric loads on utility networks has impacted the efficient operation of AC electrical transmission and distribution grid by increasing the need for reactive power (VAr/kVAr/MVAr) that are required to be supplied with active power. Install capacitor banks to reduce the reactive power demand from point of generation to point of use in high voltage networks. Brin...
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Dec 16,2021
ZDDQ static var generator connects a self-commutated bridge circuit through a reactor or directly connected in parallel to the grid to adjust the phase and amplitude of the output voltage on the AC side of the bridge circuit, or directly control its AC side current so that the circuit absorbs or Send out the reactive power that meets the requirements to achieve the purpose of dynamic reactive powe...
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Dec 25,2021
Merry Christmas to all our friends.
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Feb 18,2022
100kVAr SVG sample to Saudi Arabia. ZD-SVG Static Var Generator is a new generation of dynamic reactive power compensation solution. It is a semiconductor based switching technology using IGBT devices and DSP+FPGA control based on the Flexible AC Transmission System (FACTS) concept. Reactive power compensation has become more challenging in modern facilities due to presence of harmonics load and l...
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