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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 17,2020
China's economy According to China Daily China's economy is gradually returning back to normal, as major industrial companies outside of Hubei province have resumed work at a rate of more than 90 percent, China's top economic regulator said on Tuesday. The nonferrous metal industry's electricity consumption has reached normal level last year, and power consumption in the medical, chemical and elec...
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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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Mar 28,2020
Power quality “Power quality” can seem to be a pretty abstract term – how does one judge the quality of such an unseen commodity as electricity? But, as commercial and industrial facility managers know, good power quality can boost both productivity and employee safety, while poor power quality can mean a drain on the bottom line, thanks to damaged equipment, lost productivity and product spoilage...
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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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May 26,2020
Power Factor: Power factor correction(Cosφ) Benefits of power factor correction Improves system power factor Reduces network losses Avoid penalty charges from utilities for excessive consumption of reactive power Reduces cost and generates higher revenue for the customer Increases system capacity and saves cost on new installations Improves voltage regulation in the network Increases power availab...
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Jun 06,2020
Overview A New Generation in Power Factor Correction Today's automation equipment benefits us with greater convenience as well as cost savings from higher production efficiency. However, it can also bring significant wave distortion problems to the power grid that can lead to energy loss, increasing costs and many other power quality issues. A clean and efficient power system normally generates a ...
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Jun 19,2020
Global compensation Where a load is continuous and stable, global compensation can be applied Principle The capacitor bank is connected to the busbars of the main LV distribution board for the installation, and remains in service during the period of normal load. Advantages The global type of compensation: Reactive current still flows in all conductors of cables leaving (i.e. downstream of) the ma...
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Jul 08,2020
How to calculate Harmonic Filter In power supply systems based on alternating current (AC) -- such as the main power distribution network from electric utilities -- non-linear loads can feed some amount of power back into the wiring. This feedback typically occurs in the form of harmonics: multiples of the frequency of the original AC wave. Harmonics need to be eliminated from a power circuit by a...
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Sep 24,2020
480V power quality solutions has the best compatibility for low voltage grid(3 phase 4 wire).ZDDQ has full series 480V devices for power quality improvement and power factor correction. 480V Active Power Filter Active Power Filter has various compensation modes (harmonic, reactive power, three-phase unbalance and capacitor switching control), which can simultaneously make the said various compensa...
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Oct 21,2020
Our Indian Clients and African Clients has installed hybrid reactive power compensation system. After our guide, they use ZDDQ SVG mixed with Capapacitor banks based on Contactors and Thyristors. A united system of thyristor switched capacitor (TSC) and static var generator (SVG) was proposed to improve voltage regulation, stability, and power factor in ac transmission and distribution systems. Th...
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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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Nov 30,2020
Relations between Reactive power,power factor and penalty Power Factor penalty is spelled out in the contract between the Power Company and Industrial or Commercial customer with large three phase loads. If the contract calls for 85% Power Factor, once the customer’s power factor falls below 85%, the Power Company bills the Customer according to the agreed penalty rates. Industrial loads are mostl...
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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 18,2020
Introduction From ZDDQ professional engineers: Power systems are designed to operate at frequencies of 50 or 60Hz. However, certain types of loads produce currents and voltages with frequencies that are integer multiples of the 50 or 60 Hz fundamental frequency. These higher frequencies are a form of electrical pollution known as power system harmonics. Solution ZD-APF(Active Power Filter). This i...
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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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Dec 29,2020
The rising power consumption for the power quality equipment is the key driving factor for the market growth ZDDQ found according to the report: The global power quality equipment market size is projected to reach nearly USD 33.7 billion by 2028. Additionally, the market is forecasted to grow a CAGR of above 6.5% over the forecast period of 2020-2028. The key motivating force for the power efficie...
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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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