-
Nov 09,2023
We are ZDDQ, a professional manufacturer of Power Quality Products since 2001. Today, let's talk about the Fixed Reactive Power Compensation. Reactive power compensation refers to a method of compensating for reactive power in an electrical system using fixed-value reactive power devices. It involves the installation of passive components, such as capacitors or reactors, that provide a predetermin...
read more
-
Dec 02,2023
ZD-GWJ Medium Voltage(3kV~24kV) group automatic reactive power compensation device automatically switches capacitor banks according to the voltage and reactive power of the power supply bus, and performs reactive power compensation by tracking load changes, thereby providing power factor, improving power supply quality, and reducing power consumption. It is often installed in front of the control ...
read more
-
Jan 11,2024
STATCOM (Static Synchronous Compensator) is a power electronic device used in electrical power systems for voltage control and power factor correction. In a solar farm, the main functions of a STATCOM are as follows: Voltage Regulation: Solar farms typically operate at high voltages, and fluctuations in solar irradiation and load demand can cause voltage variations. STATCOMs can regulate the volta...
read more
-
Jan 19,2024
Power Factor Control refers to the management and maintenance of an acceptable power factor in electrical systems. Power factor is the ratio of real power (kW) to apparent power (kVA) in an electrical circuit. A low power factor indicates that the circuit is inefficient and requires more current to deliver a given amount of power. This results in increased energy losses, higher electricity bills, ...
read more
-
Jan 22,2024
n the context of the metallurgical industry, Statcom refers to Static Var Generator(SVG) or Static synchronous Compensator, which is a type of power electronics-based device used for reactive power compensation and voltage control. Statcoms are commonly used in metallurgical processes to improve power quality and stabilize the voltage levels. The primary function of an Statcom in the metallurgical...
read more
-
Jan 29,2024
To build a capacitor bank panel, you will need to follow these general steps: Determine the capacitor bank size: Calculate the required capacitance based on the power factor correction needs of your system. Consider factors such as the target power factor, load characteristics, and voltage levels. Select capacitors: Choose high-quality capacitors that are suitable for the desired voltage and curre...
read more
-
Feb 19,2024
What is harmonics issues in AC and DC grid? In AC and DC grids, harmonics refer to the presence of frequency components that are integer multiples of the fundamental frequency. Harmonics can be problematic because they can cause various issues such as: Voltage and Current Distortion: Harmonics in the grid can distort the shape of the voltage and current waveforms, resulting in distorted sine waves...
read more
-
Feb 26,2024
A Static Synchronous Compensator (STATCOM) is a power electronic device used for voltage control and reactive power compensation in electrical power systems. It is typically connected to the grid and is capable of injecting or absorbing reactive power to regulate the system voltage. The control of voltage by a STATCOM is primarily achieved by manipulating its reactive power output. Here's a basic ...
read more
-
Mar 20,2024
Urban rail transit systems mainly include: subway systems, light rail systems, monorail systems, trams, maglev systems, automatic guide rail systems, and urban rapid rail systems. According to the different nature of electricity consumption, the power supply system of the subway system is mainly divided into two, one is the traction power supply system and the other is the power lighting power sup...
read more
-
Mar 25,2024
Static Synchronous Compensator (STATCOM) is a device used in power systems to control voltage and reactive power. In the context of rail transit, STATCOM can serve several purposes: Voltage Regulation: STATCOM can regulate the voltage levels in the rail transit system, ensuring that they remain within acceptable limits. It can compensate for voltage drops or fluctuations caused by various factors ...
read more
-
Apr 17,2024
1. What is reactive power? In the operation of the power grid, due to the existence of current and voltage, there is not only active power but also reactive power in the power system. Active power is the part of electrical energy that is directly converted into efficiency, such as the process in which electrical energy driving motors, heaters and other loads is converted into mechanical energy and...
read more
-
May 06,2024
What is nonlinear load? A nonlinear load is a load whose current is not proportional to its voltage. Since some electronic components, such as transistors and diodes, exhibit nonlinear characteristics when operating, in actual power consumption, some electrical equipment connected to the load will deform the current waveform. This deformation causes the voltage to distort and generate additional f...
read more
-
May 13,2024
The improvement of power quality is mainly through power quality equipment and current signal and other parameters in the current transformer detection system, so as to correctly control the power quality problem in real time and improve the environment of the distribution system. For capacitor bank, we usually only use a CT mounted on the power side for sampling. For SVG / APF, a...
read more
-
May 29,2024
Active filters and passive filters are two types of filters that are often used in electronic circuits. Although they can both be used to filter certain frequencies in electrical signals, there are some different differences between them. 1. Working Principle Passive filters mainly rely on passive components (such as capacitors, inductors, resistors, etc.) to filter signals. They can only process ...
read more
-
May 30,2024
1. What are the 3rd, 5th, and 7th harmonics? In a normal power system, electrical equipment with linear impedance change characteristics will not affect the power supply with a frequency of 50Hz and a standard sinusoidal waveform when it is working. However, with the development of power electronics technology, there are more and more electrical equipment with nonlinear impedance characteristics (...
read more
-
Jun 13,2024
When an oscillating system is subjected to periodic external force, the amplitude of the oscillation increases sharply when the frequency of the external force is the same as or very close to the natural oscillation frequency of the system. The frequency at which resonance occurs is called "resonance frequency". In electrical engineering, the resonance phenomenon of an oscillating circuit. The res...
read more
-
Jul 01,2024
STATCOM (Static Synchronous Compensator) is a power electronic device used power systems for voltage control and power factor correction. While Statcom are not directly related to coal mining operations, they can play a role in providing stable and reliable electrical power for mining operations, including coal mines. Coal mines typically require a significant amount of electrical power for variou...
read more
-
Jul 01,2024
First of all, the operation of inductive equipment must establish a magnetic field (such as a motor). Since the instantaneous start-up of large equipment requires the power grid to provide a large amount of Reactive Current to establish a magnetic field, the voltage of the system will be greatly reduced at the moment of equipment startup, causing other equipment to be protected or unable to operat...
read more
