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Nov 21,2019
ZDDQ power quality correction products are part of the solution. Most utilities charge for peak electrical demand on each month’s electrical bill. The demand charge is to allow the utilities to recoup part of their capital investment in the distribution network they operate. Each customer pays a demand charge for its peak operating load. Often inherent in the structure of these demand charges is a...
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Jan 07,2020
Part 1:Principle of reactive energy management All AC electrical networks consume two types of power: active power (kW) and reactive power (kVAr): The active power P (in kW) is the real power transmitted to loads such as motors,lamps, heaters, computers, etc. The electrical active power is transformed into mechanical power, heat or light. The reactive power Q (in kVAr) is used only to power the ma...
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Feb 10,2020
WHAT IS HARMONIC FILTERING? To understand the purpose of harmonic filtering, it helps to understand what harmonics are. The voltage of a standard 50Hz Alternating Current(AC) power supply swings between positive and negative 50 times a second, following a neat sine-wave. Linear AC electrical loads such as heaters or incandescent lights draw a current that follows this same sine-wave. The graph abo...
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Feb 18,2020
How much can be saved? Ultimately the level of energy saving achieved will be dictated by a combination of the incoming supply voltage level and the types of electrical equipment in use. The higher the supply voltage, the greater the potential to make energy savings. However different types of electrical equipment deliver different levels of energy saving for the same reduction in voltage. Voltage...
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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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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 16,2021
Status analysis According to marketing research by ZDDQ(ANHUI ZHONGDIAN ELECTRC CO., LTD.). To reduce energy consumption and increase energy efficiency, many facility management executives are looking to renewable energy sources, such as solar or wind, to offset reliance on traditional electric power. Despite the growing prevalence of these solutions, there are drawbacks that can make alternative ...
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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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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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Apr 17,2021
Many facilities have mandates to save energy. Improving energy efficiency offers huge advantages to businesses—reducing the costs of energy and operations— and increasing sustainability. Ⅰ. Abstract Through proven methods including variable frequency drives (VFD), LED lighting and conservation methods and control, many new and existing facilities achieve the savings that they expect. However, many...
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May 27,2021
Upgrading Older Capacitor Banks is Important As an inexpensive source of reactive power, capacitor banks bring many benefits to a facility. They are widely deployed to avoid penalties on utility bills, lower distribution losses, increase transformer/Genset capacity, maintain nominal voltage, and to reduce energy losses resulting in decreased carbon emissions. When coupled with reactors, capa...
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Jun 07,2021
Energy consumption pattern The energy pattern given in below table is helpful in understanding the way energy is used in a foundry and helps to control energy cost by identifying areas where waste can occur and where scope for improvement may be possible. It is observed that melting consumes a major portion of total energy consumed. SN Sections Energy Consumption 1 Melting(Furnance) 70% 2 Molding ...
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Jun 16,2021
Power factor penalty in power bills We've found that many people struggle to understand how Power Factor (PF) impacts demand charges. Frequently, end use customers pay a significant premium each month in demand charges because their PF is below a threshold set by the utility in the rate tariff. Oftentimes its not obvious to the untrained eye when there are extra charges associated with a bad PF on...
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Jan 15,2022
ZDDQ carefully understood the spirit of the document, and organized employees to focus on watching the TV feature film "Life is more important than Mount Tai—Learning General Secretary Xi Jinping's important exposition on safe production", so as to achieve full coverage of learning and attach great importance to this work.
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Jun 10,2022
Harmonic Mitigation Expert---Active Power Filter The main hazards of harmonics: Increase the load of power facilities, reduce the power factor of the system, reduce the effective capacity and efficiency of power generation, transmission and power consumption equipment, resulting in equipment waste, line waste and power loss; Causes the resonance of reactive power compensation capacitors and the am...
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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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Sep 29,2022
The ZDDQ SVG module we exported to Colombia in mid-September has been put into use and installed in an airport power distribution room somewhere in Bogota, and the compensation effect is good. The two modules are: 440V 60Hz 40kvar(50A) SVG Module and 440V 60Hz 80kvar(100A) SVG Module.
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Dec 05,2022
Reactive Power in Inductive Loads Inductive loads such as chokes, motors, inductive heating equipment, generators, transformers, and arc welding equipment produce an electrical lag that is commonly referred to as inductance. This inductance causes a phase difference between current and voltage. As a result of phase shift due to inductance, there are times when current and voltage have different si...
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