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Nov 22,2019
STATCOM/SVG INTRODUCTION Static Synchronous Compensator STATCOM (SVG) is one of the core equipment FACTS (Flexible Alternative Current Transmission Systems).The system can quickly compensate reactive, and take effective governance for harmonics, voltage fluctuations and flicker and other power quality problems, improve the safety and reliability of the system. With the limits of the IGBT can withs...
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Nov 29,2019
Industry background Chemical industry involves many mechanical processes with demanding quality requirements. Before any mechanical smelting, casting, or stamping, an induction melting furnace is used to melt metal. Most induction melting furnaces use a 6-pulse or 12-pulse rectifier, which produces high volumes of harmonic and reactive power. As a result, the production efficiency of induction mel...
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Dec 19,2019
Method for determining compensation (Power Factor correction Guidelines) Step 1 Selection of the compensation mode The location of L.V capacitors banks in an installation constitutes the mode of reactive power compensation, which may be central (one location for the entire installation), by sector or group (section-by-section), at load level, or some combination of the latter two. In principle, th...
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Dec 19,2019
Method for determining compensation (Power Factor correction Guidelines) Step 2 Selection of the compensation type Different types of compensation should be adopted depending on the performance requirements and complexity of control: Fixed, by connection of a fixed-value capacitor bank Automatic, by connection of a different number of steps, allowing adjustment of the reactive energy to the requir...
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Dec 19,2019
Method for determining compensation (Power Factor correction Guidelines) Step 3: Allowance for operating conditions and harmonics Capacitor banks should be selected depending on the working conditions expected during their lifetime. Allowing for operating conditions The operating conditions have a great influence on the life expectancy of capacitors. The following parameters should be taken into a...
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Dec 23,2019
The Graph below shows Harmonic Current Distortion in the form of THDi. This is hovering between 20 and 25%. Ideally, it should be less than 10% and preferably less than 8% THDi. The highest value of average total harmonic distortion (THDi%) across three phases was calculated from raw data. This value is 24.19%THDi and was recorded at time shown. At the same time, average line current (Amps) across...
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Jan 03,2020
Compared with SVC, SVG is superior to SVC in the following aspects: SVG: Static Var Generator(also as know static synchronous compensator or Statcom) SVC: Static Var Compensator 1. Advanced working principle (1)Static Var Compensator can be seen as a dynamic source of reactive power. According to the requirements of accessing the grid, it can provide capacitive reactive power to networks, and...
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Jan 04,2020
SVG Principle The principle of the SVG is, when the load is generating inductive or capacitive current, it makes load current lagging or leading the voltage. SVG detects the phase angle difference and generates leading or lagging current into the grid, making the phase angle of current almost the same as that of voltage on the transformer side, which means fundamental power factor is unit. Compare...
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Jan 10,2020
STATCOM will be utilized in the night for power factor correction and voltage control at the terminals of an induction motor operating at poor power factor. PV solar farms produce power during the day and are completely idle in the nights. The proposed new control on PV solar system will help in increase the utilization of the PV solar system. A key component of the PV solar plant is a voltage sou...
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Jan 13,2020
Abstract: The application of SVG/STATCOM, a high voltage dynamic reactive power compensation device, produced by ZDDQ Electric Co., Ltd. is described in this paper. Its role in reactive power compensation for new energy construction is analyzed and its applications in electric and electronic fields are indicated. Key words: SVG;STATCOM; Photovoltaic station; Reactive power compensation; Applicatio...
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Feb 01,2020
To our clients, You may have had some good memories about the past one, but you never know what’s the new one is bringing for you. It's time to be hopeful, have new dreams and make some new resolutions for the new year in your life. It's time to connect with each other and make new year wishes. Its time to move on and embrace what’s new. New year means a lot of new dreams and new achievements. Peo...
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Feb 07,2020
Power Factor Correction The active power produced by the active current can alone be turned into an effective use for the consumer; while the reactive power produced by the reactive current does not yield usable power, and consequently, is not registered on the active performance meter. The reactive power has, however, a negative effect on generators, transformers, and conductor lines, while causi...
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Feb 29,2020
The ubiquity of synchronous generation should not be assumed in highly renewable power systems. Various problems may consequently arise, not least of which are the difficulties entailed in maintaining regional reactive power balance. Offering a potential solution to such problems, modern renewable generator technologies offer controllable reactive power resources. As many of these generators will ...
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Mar 23,2020
Overview of Active Power Filter APF-1000 APF-1000 Active power filter has various compensation modes (harmonic, reactive power, three-phase unbalance and capacitor switching control), which can simultaneously make the said various compensation, and the proportion of compensation capacity by harmonic, reactive power, and three-phase unbalance can also be set, comprehensively solving the problem of ...
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Apr 18,2020
Power quality problems and Industry background Dynamic reactive power, lower power factors, and higher harmonic content are common power quality problems in the CNC industry. Major contamination sources of power quality include the punching machines,welding machines. When harmonics occur, dynamic reactive current and 3-phase imbalance are produced. During the CNC period, the power factor of arc fu...
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Apr 24,2020
Following are simple contrast list, Product Static Var Generator(SVG) Multifunctional electricity controller & optimizer （MEC） Mechanical switch capacitor （MSC） Thyristor-switched capacitor （TSC） Response speed ≤5ms ≤5ms 300ms 20ms Reactive power compensation ability Rated capacitive reactive power to rated inductive reactive power, 0.1kVar precision, and up to 1 power factor Rated capacitive ...
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Apr 29,2020
STATCOM A static synchronous compensator, known as a STATCOM, is another device used to regulate the power factor in medium to high voltage applications. They operate on roughly the same principles as a synchronous compensator, however, use a voltage source converter as opposed to a rotating machine to provide dynamic Power Factor Correction. STATCOMs use IGBT switching te...
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May 06,2020
ZDDQ 690V Static Var Generator ZD-SVGM-2000 Static Var Generator (SVG) is the new standard in reactive energy compensation for 690V networks. This power electronic current source is the accurate and highly reliable solution for today’s networks characterised by significant increase in harmonics, voltage variations caused by intermittent renewable sources connected to the network and voltage level ...
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