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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 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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Jan 17,2020
Centralised compensation Centralised compensation by means of an automatic capacitor bank with automatic regulation offers the most simple and economical solution. The reactive power is subdivided in a number of capacitor steps that can be connected independently. A reactive power controller continuously measures the needs of the installation and connects or disconnects the capacitors until the ta...
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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 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 12,2020
A capital investment in power factor correction(STATCOM or SVC) and harmonic filtering equipment can result in a healthy return of investment –depending on the utility’s demand rate structure, production quality cost due to harmonics and voltage fluctuations in the distribution system. ZDDQ Electric power quality correction products are part of the solution. Most utilities charge for peak electric...
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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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Feb 25,2020
ZDDQ has come back to factory and start to work Since Feb.18th. The factory will carry out the strict measures to maintain the normal production to meet clients' orders. In 2020, we will focus on low voltage and medium voltage power qualit improvement and power factor correction. In low voltage field, we will push on R&D of Active power filter, and provide perfect service for clients.We have b...
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Mar 04,2020
STATCOM - Static Synchronous Compensator It is a solid-state switching converter, capable of generating or absorbing independently controllable real and reactive power at its output terminals when it is fed from an energy source. STATCOM is considered as voltage-source converter that, from a given input of dc voltage, produces a set of 3-phase ac-output voltages, each in phase with and coupled to ...
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Mar 11,2020
Product Description ZDDQ Medium Voltage Metal Enclosed Capacitor and Harmonic Filter Banks are designed for industrial, commercial, and utility power systems requiring medium voltage automatic power factor correction. Standard designs are available for placement in outdoor or indoor substations (an enclosure integrity option can be added to allow for placement in publicly accessible areas) for pow...
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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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Apr 03,2020
Power factor correction Connected equipment (transformers, motors, air-conditioning, refrigerators, etc.) cause a phase angle between current and voltage.When the current is phase-shifted, it takes more current to deliver the same amount of active power. Impact of reactive power • Transmission equipment has to be sized for the apparent power, yet only active power is useful • Increased losses in t...
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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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May 13,2020
High Power STATCOM in Electricity Networks A High Power STATCOM is usually installed to support electricity networks that have a poor power factor and often poor voltage regulation. STATCOM –static synchronous compensator – is a solution often deployed by utilities or large industries to solve flicker, harmonic and dynamic reactive compensation problems in medium voltage or high voltage netw...
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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 12,2020
What is Power Factor? Power factor is a measure of how effectively you are using electricity. Various types of power are at work to provide us with electrical energy. Here is what each one is doing. Working Power – the “true” or “real” power used in all electrical appliances to perform the work of heating, lighting, motion, etc. We express this as kW or kilowatts. Common types of resistive loads 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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