-
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...
read more
-
Feb 24,2020
Why to improve the power Factor? A good power factor makes it possible to optimize on electrical installation and provide the following advantages • No billing for reactive energy. • Decrease in the subscribed power in kVA • Limitation of active energy losses in cables given the decrease in the current conveyed in the installation • Improvement in the voltage level at the end of the line • Additio...
read more
-
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...
read more
-
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 ...
read more
-
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 ...
read more
-
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...
read more
-
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 ...
read more
-
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...
read more
-
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...
read more
-
Apr 13,2020
Voltage Sag Voltage sag is the main problem to cause the losses of industrial production. Unpredictable outage rarely happen in many high automated process control industries. who have the good power supplies. Voltage Sag is mostly caused by thunder,but it also has other reasons. Power system cause: starting of heavy machine and short circuit fault. Unpredictable accident:traffic accident,construc...
read more
-
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...
read more
-
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...
read more
-
May 20,2020
STATCOM STATCOM (Static Synchronous Compensator)continuously provides variable reactive power in response to voltage variations, supporting the stability of the grid. STATCOM operates according to voltage source converter (VSC) principles, combining unique PWM (pulse width modulation) with millisecond switching. STATCOM functions with a very limited need for harmonic filters, contributing to a sma...
read more
-
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...
read more
-
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 ...
read more
-
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...
read more
-
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...
read more
-
Jun 29,2020
The nature of transformer inductive reactances All previous references have been to shunt connected devices such as those used in normal loads, and power factor correction capacitor banks etc. The reason for this is that shunt connected equipment requires (by far) the largest quantities of reactive energy in power systems; however, series-connected reactances, such as the inductive reactances of p...
read more
