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Nov 23,2020
ZDDQ Static Var Generator SVG and Active Power Filter APF adopt dual interface of Current Transformer,which has great to facilitate new project design and adaptation to old projects. Our SVG and APF can accurately calculate the load harmonic current data and provide perfect compensation effect. For following sites, Both single module or multiple modules in parallel, Multiple active filter/SVGcabin...
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Dec 09,2020
The static var generator (SVG) with appropriate control method is a good solution to solve the problem of reactive power impact and harmonic pollution which is generated by the nonlinear load. A control strategy using active current separation and the current indirect control is used for SVG. The active current separation is a method for detecting the harmonic and reactive current, and then the su...
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Dec 22,2020
SVG: Static Var Generator ANHUI ZHONGDIAN ELECTRIC CO., LTD. static var generator is a static electrical device/equipment/system that draws controlled capacitive or inductive current from the electrical power system and thereby generates or absorbs reactive power. Permanently connected and switchable reactor and capacitor banks have been always used in AC power systems to ensure desirable voltages...
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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 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 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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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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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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Mar 12,2022
ZD-HVSVG series HV static var generator/SVG/STATCOM using IGBT as the core power modules which can quickly and continuously provide capacitive or inductive reactive power, achieve constant reactive power, constant voltage and constant power factor control through the assessment point, and ensure the power grid is running stable, high efficiency and high quality. In the power distribution...
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Mar 27,2022
SVC: A static VAR compensator (SVC) is a set of electrical devices for providing fast-acting reactive power on high-voltage electricity transmission networks. Statcom: A Stati synchronous COMpensator (STATCOM) is a fast-acting device capable of providing or absorbing reactive current and thereby regulating the voltage at the point of connection to a power grid. Advantages of SVC SVCcontrol vo...
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