Zhejiang Nengrong Electric Power Equipment Co.,Ltd. was established in 2007 (formerly known as Yueqing Zhongrong Power Compensation Equipment Co., Ltd.). It is a high-tech enterprise that provides power system power quality monitoring and control, reactive power compensation, harmonic control, and power safety protection equipment as its core business. Since its establishment, we have always adhered to the concept of "energy conservation creates value, protection builds harmony" and are committed to providing high-quality products and comprehensive solutions for users in various fields to improve power quality, optimize control, save energy and reduce consumption, and protect power grid safety.
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Production market
The main overseas markets for sales are Southeast Asian countries, developing countries such as Africa and South America. We currently have agents in Uzbekistan, Vietnam, and Thailand.
The Reactive compensation high-voltage fixed reactive power compensation complete set device (hereinafter referred to as the device) is suitable for AC power systems with a frequency of 6~35kV and 50Hz. It is mainly used to regulate the bus voltage and reactive power in power systems, improve power factor, improve voltage quality, and reduce grid fine consumption.
Reactive power compensation ZRTBBG type high voltage reactive power on-site compensation device (hereinafter referred to as the device) is an indoor cabinet with rated voltage of 6-10kV and frequency of 50Hz, which is widely used for on-site reactive power compensation of three-phase AC motors with fixed voltage of 6-10kV. In order to reduce power loss, improve the quality of grid voltage and improve the motor start performance.
Dynamic Reactive Power Compensation
ZRTBBZ outdoor box type automatic reactive power compensation complete set device (hereinafter referred to as the device) is a new product based on ZRTBB, dynamic reactive power compensation which adopts preinstalled box deformation shell to adapt to outdoor use.
Reactive Power Compensation Devices
The ZRTBBZW column mounted outdoor line reactive power compensation complete set device (hereinafter referred to as the device) is suitable for rated voltage 10kV or 6kV high-voltage distribution lines, used to improve power factor, reduce circuit losses, and improve voltage quality.
Shunt Reactive Power Compensation
ZRTBBH type assembled high-voltage parallel capacitor device reactive compensation equipment is used in power frequency systems with rated voltage of 6~35kV and above, to improve power factor, improve and enhance power supply quality, adjust network voltage, and reduce line losses.
The ZRTBBL high-voltage filtering reactive power device is used in the 6~35kV power system, mainly installed in power, steel, metallurgy, chemical, coal mining, light industry, building materials, and places where harmonic currents are generated.
SVC Reactive Power Compensation
The magnetic controlled reactor type high-voltage static reactive power compensation device (hereinafter referred to as "MCR type SVC device") is suitable for installation in systems with frequent changes in reactive load, such as wind power, photovoltaic power stations, arc furnaces, rolling mills, mine hoists, electric locomotives, and other high-voltage systems.
Reactive Power Compensation Capacitor
The application of NRSVG dynamic reactive power compensation and harmonic control device is the most advanced dynamic reactive power compensation technology and the most mature voltage source converter technology, which makes the reactive power compensation device achieve a qualitative leap.
Voltage Control Reactive Power
The application of NRSVG type dynamic reactive power compensation and harmonic control device is currently the most advanced dynamic reactive power compensation technology. The mature voltage source inverter technology of the stove has made a qualitative leap in reactive power compensation device.
Reactive power compensator is the portion of electricity that establishes and sustains the electric and magnetic fields of alternating current equipment. Reactive power must supplied to most types of magnetic equipment, such as motors, transformers, etc.power system supply or consumes both active and reactive power. While it is the active power that contributes to the energy consumed or transmitted, reactive power does not contribute to the energy. Reactive power is either generated or consumed in almost every component of the system. Reactive power compensation is defined as the management of reactive power to improve the performance of AC systems.
Voltage Stability
The Reactive Power Compensator regulates voltage levels by quickly providing reactive power. This minimizes voltage fluctuations and ensures a stable voltage in the system.
Power Factor Correction
Reactive Power Compensator corrects the power factor by providing reactive power control and keeps the power factor of the system at optimum levels. This increases energy efficiency.
Reactive Power Control
Reactive Power Compensator keeps the reactive power need of the system under control. In this way, reactive power balance is achieved and energy losses are minimized.
Fast Response Time
The Reactive Power Compensator quickly supplies or absorbs reactive power thanks to its electronic switching components. This provides voltage stability and power factor improvement with fast response time.
Efficiency in Energy Systems
The advantages of Reactive Power Compensator increases the efficiency of energy systems, reduces voltage fluctuations and ensures that the system operates more healthily and efficiently. This helps optimize energy costs and increase system performance.
Application of Reactive Power Compensator
Electricity Transmission Lines
Electricity transmission lines are infrastructure systems that enable the transportation of electrical energy from production points to consumption areas. These lines generally operate at high voltage and transmit electrical energy in large areas.Reactive Power Compensator is a control device used in electrical transmission lines. In these lines, the use of SVCReactive Power Compensator is carried out to ensure voltage stability, minimize voltage drops and increase the efficiency of the transmission line. It reduces losses in power transmission by minimizing voltage drop along long-distance transmission lines. At the same time, it maintains the voltage balance of the line, regulates fluctuations and ensures the healthy operation of the transmission system.
Industrial Facilities
Industrial facilities are areas where industrial activities such as production, manufacturing or processing are carried out. These facilities generally have large electrical loads and are places where attention should be paid to issues such as reactive power balancing and power factor correction in electrical power systems. is used in industrial facilities, especially in places with large electrical loads. Its use in such facilities can correct the power factor and increase the efficiency of the system by keeping the reactive power under control.
Voltage Regulation
Reactive Power Compensator plays an important role in voltage regulation. It is especially used in places with large-scale electrical loads such as energy transmission lines or industrial facilities. SVC maintains voltage stability by quickly providing reactive power. In this way, it minimizes voltage fluctuations and keeps voltage levels at desired values.Voltage regulation ensures safe and efficient operation of electrical systems. In addition to protecting against surges, maintaining a certain voltage level ensures the healthy operation of industrial equipment and prevents problems caused by overvoltage. This ensures that energy systems operate stably and users benefit from electricity services more reliably.
Capacitor banks
To protect against adverse effects of voltage variations by maintaining a sufficiently high voltage level, contributing to the security and reliability of the grid and reduced system losses.
Synchronous condensers
Produce reactive power which can be regulated. Synchronous condensers are suitable for correcting the power factor of the system, but this equipment is quite expensive compared to static capacitors.
Ups systems
The latest technology in UPS units now offer PFC power factor correction on the front end of the UPS thus offering correction of reactive components and harmonics generated by the UPS load - the impacts of this is that there is a power-saving on the grid supply due to only non-reactive load being drawn and thus saving on supply capacity and cost per kWh.
Shunt compensation
The device that is connected in parallel with the transmission line is called the shunt compensator. A shunt compensator is always connected in the middle of the transmission line. It can be provided by either a current source, voltage source or a capacitor.
Synchronous condensers
The devices use synchronous voltage sources for generating or absorbing reactive power. A synchronous voltage source (SVS) is constructed using a voltage source converter (VSC).
Static VAR compensators
A static VAR compensator (or SVC) is an electrical device for providing reactive power on transmission networks. The term "static" refers to the fact that the SVC has no moving parts (other than circuit breakers and disconnects, which do not move under normal SVC operation). The SVC is an automated impedance matching device, designed to bring the system closer to unity power factor. If the power system's reactive load is capacitive(leading), the SVC will use reactors (usually in the form of thyristor-Controlled Reactors) to consume vars from the system, lowering the system voltage. Under inductive (lagging) conditions, the capacitor banks are automatically switched in, thus providing a higher system voltage.
Shunt compensation
Shunt-connected reactors are used to reduce the line over-voltages by consuming the reactive power, while shunt-connected capacitors are used to maintain the voltage levels by compensating the reactive power to transmission line.
Series compensation
When a device is connected in series with the transmission line it is called a series compensator. A series compensator can be connected anywhere in the line. There are two modes of operation -capacitive mode of operation and inductive mode of operation. A simplified model of a transmission system with series compensation is shown in Figure .The voltage magnitudes of the two buses are assumed equal as V, and the phase angle between them is .
Components of Reactive Power Compensator
Capacitor
Capacitor is one of the core components of reactive power compensation device. Its main function is to improve the power factor of the power system by storing electrical energy. By adjusting the capacity and quantity of capacitors, the power factor of the grid can be improved and the reactive power in the grid can be reduced, thereby improving the stability and energy efficiency of the grid.
Reactor
The reactor is also an important part of the reactive power compensation device. Its main function is to offset the capacitive load in the power grid and reduce the flow of reactive power. Reactors are mainly divided into two types: iron core reactors and iron core reactive reactors, which are suitable for different power systems.
Controller
The controller is the intelligent part of the reactive power compensation device, used to control the operation of capacitors and reactors and regulate and maintain the power factor of the power grid. Modern controllers usually have high-precision electrical parameter detection and calculation functions, and can adjust the output power of the device based on the monitoring results to achieve the best compensation effect.
Reactor switch
The reactor switch is mainly used to turn on and off the reactor to realize the application of the reactor in the power system. Reactor switches mainly include contactors, fuses, circuit breakers, etc. Different switch types can be selected according to specific power system requirements. At the same time, the reactor switch also needs to cooperate with the controller to achieve accurate control.
Filter
The filter is an electrical appliance designed to reduce harmonics caused by reactive power compensation devices. Its main function is to separate harmonics and reduce the impact of harmonics on the power system. Modern filters mostly use passive filters, which have the advantages of simple structure and stable operation, and can effectively ensure the safe and stable operation of the power system.
How to Choose Reactive Power Compensator
Understand system requirements
First, it is necessary to clarify the specific needs of the power system, including load type, reactive power demand, load changes, etc. These factors will directly affect the selection and configuration of the compensation device.
Determine compensation method
Determine the appropriate compensation method based on system requirements. For example, if the system needs to supply reactive power to the load nearby and improve the power factor, parallel capacitor compensation can be selected. If the system needs to compensate for reactive power under dynamic working conditions, a static reactive power compensation device can be selected.
Consider device performance parameters
When selecting a reactive power compensation device, you need to pay attention to its performance parameters, such as reactive power capacity, voltage modulation range, response speed, etc. These parameters will directly affect the compensation effect and operating efficiency of the device.
Consider economics
On the premise of meeting system requirements, the economy of the reactive power compensation device also needs to be considered. This includes equipment purchase costs, installation costs, operation and maintenance costs, etc. Cost-effective equipment should be selected to reduce the overall cost of the power system.
Choose reliable brands and suppliers
Choose brands and suppliers with good reputation and reputation to ensure the quality of the equipment and the reliability of after-sales service. This helps reduce equipment failure rates and improves the stability of the power system.
Consider future expansion and upgrades
When selecting a reactive power compensation device, you also need to consider the future expansion and upgrade needs of the power system. Choose equipment that is flexible and scalable so that it can be easily upgraded and retrofitted in the future.
Security Checks and Preparations
Make sure the equipment is shut down and disconnected from the power source to avoid the risk of electric shock. Clean up debris around equipment to ensure a clean and safe working environment.
Visual inspection
Check the appearance of the reactive power compensation controller, including the casing, panel, heat sink, etc., to see if there is any damage, deformation or corrosion. Check whether the identification and labels of the equipment are clear and not peeling off or blurred.
Wiring and connection checks
Check whether the wiring terminals of the reactive power compensation controller are tight and not loose or falling off. Check whether the connecting cable is damaged or aged, and replace it if necessary.
Function test
According to the equipment manual or technical information, test various functions of the reactive power compensation controller, such as switching function, protection function, etc. Check whether the test results meet the requirements and record the test data and abnormal situations.
Cleaning and maintenance
Use appropriate cleaning agents and tools to clean the housing, panels and heat sinks of the reactive power compensation controller to remove dust and dirt. Dust and clean the inside of the equipment to make sure there is no accumulation of debris or dust.
Parts replacement and maintenance
According to the equipment manual and technical information, check and replace parts that need to be replaced regularly, such as capacitors, fuses, etc. Lubricate and maintain the lubricated parts of the equipment to ensure the flexibility and reliability of the equipment's moving parts.
Zhejiang Nengrong Electric Power Equipment Co.,Ltd. was established in 2007 (formerly known as Yueqing Zhongrong Power Compensation Equipment Co., Ltd.). It is a high-tech enterprise that provides power system power quality monitoring and control, reactive power compensation, harmonic control, and power safety protection equipment as its core business. Since its establishment, we have always adhered to the concept of "energy conservation creates value, protection builds harmony" and are committed to providing high-quality products and comprehensive solutions for users in various fields to improve power quality, optimize control, save energy and reduce consumption, and protect power grid safety.
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FAQ
Q: How reactive power can be compensated?
Q: What are the basic types of reactive power compensation?
Q: Why is reactive power called useless?
Q: Does capacitor absorb reactive power?
Q: Can reactive power be negative?
Q: Why does reactive power affect voltage?
Q: Can reactive power be zero?
Q: What is another name for reactive power?
Q: What is reactive power in layman's terms?
Q: Do inductors produce reactive power?
Q: Does the negative of a capacitor go to ground?
Q: Do capacitors release AC or DC?
Q: What is the symbol for reactive power?
Q: Is reactive power wasted?
Q: Is reactive power delivered or absorbed?
Q: Which static device can generate reactive power?
A Static VAR compensator (SVC) is a set of electrical devices for providing fast-acting reactive power on high-voltage electricity transmission networks. SVCs are part of the flexible AC transmission system device family, regulating voltage, power factor, harmonics and stabilizing the system.
Q: How many types of reactive power are there?
Q: Why reactive power is not used?
Q: Is reactive power a vector?
Q: Which direction will reactive power flow?
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