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Dec 05,2019
What's the Definition of Power Factor? Power Factor Definition: Power factor(PF for short) is the ratio between KW and KVA drawn by an electrical load where the KW is the actual load power and the KVA is the apparent load power. It is a measure of how effectively the current is being converted into useful work output and more particularly is a good indicator of the effect of the load current on th...
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Dec 18,2019
Single busbar compensation Overview An installation with a single LV busbar is that most often encountered. This type of installation requires that the reactive power can change with respect to the methods defined previously. Compensation uses all the receiving devices of the installation and the amperage of the current transformer is determined according to the total current conducted through the...
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Jan 19,2020
A changing electrical network brings new power quality issues. Today the way we generate, use, and control our energy is changing. New and renewable generation and distribution technology is becoming common, and combined with more dynamic and complex load profiles, there are more challenges faced by the network and energy users to provide high power quality. A new way to improve your power quality...
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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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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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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 27,2021
Introduction to Active Harmonic Filter Suitable to be fitted within large installation systems, Active Harmonic Filters are used to eliminate, or at least mitigate, harmonics experienced from power received from the Australian national grid. The electricity which is delivered to a property is not necessarily ‘clean’ and therefore properties can experience harmonics. Harmonic currents lead to power...
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Mar 04,2021
ZDDQ Active Harmonic Filter Active Harmonic Filter is a perfect comprehensive solution to power quality problems with power grid such as harmonic wave, reactive power, and three-phase load unbalance. ZD-AHF-4 active harmonic filter is connected in parallel in 380V~456V power grid, to detect the harmonic wave in power grid in real time, generate the reverse-phase compensation current through the co...
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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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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 04,2021
ZDDQ Active Harmonic Filter Active harmonic filter is connected in parallel with non-linear loads, and uses one set of CT to detect the load current. It calculates each order harmonic current by FFT algorithms in its DSP microchips, and then generates a compensating current with the same amplitude but opposite phase angles to the detected harmonic current, which cancels out the original load harmo...
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Jan 10,2022
ZDDQ Low Voltage Capacitor Bank for Reactive Power Compensation Reactive power compensation, is a technology that improves the power factor of the power grid in the power supply system, reduces the loss of power supply transformers and transmission lines, improves power supply efficiency, and improves the power supply environment. Therefore, the reactive power compensation device is in an indispen...
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Apr 20,2022
Active Harmonic Filter in Food Industry(Pakistan) Our client of Food Factory is a famous and one of the biggest factory in Pakistan. Thanks for Mr Abudal's professional job. And the AHF have achieve a good effect till now. We have finished the installation and commissioning the Active Harmonic Filter at site. The THDI has reduced to 3% from 60%.
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May 27,2022
ZDDQ low voltage automatic capacitor banks improves power factor in networks with variable energy demand and non-linear loads, therefore, with variable reactive load needs. Equipped with a power factor controller to regulate their automated operation and monitoring features, ZDDQ automatic capacitor banks remove power factor charges of the electricity bill and reduce the losses of electrical equip...
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Aug 22,2022
The application of distribution system capacitor banks has long been accepted as a necessary step in the design of distribution feeders. Design considerations often include traditional factors such as voltage support, power factor, and released capacity. However, as customer systems evolve through the use of power electronics, the distribution system design of the future will include power quality...
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Nov 14,2022
With the continuous development of the market, we have more and more customers in the Middle East market using our APF(Active Power Filter) equipment. Active Power Filter is a perfect comprehensive solution to power quality problems with power grid such as harmonic wave, reactive power, and three-phase load unbalance. ZD-APF active power filter is connected in parallel, to detect th...
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