Application scope of low-voltage dynamic reactive power compensation device

Release time:

2025-06-25

Author:

Source:

Abstract

Low-voltage dynamic reactive power compensation devices are widely used in the following fields and scenarios:

1. Industrial Manufacturing

  • Metallurgy : Suitable for medium-frequency induction heating furnaces, arc furnaces, and other inductive load equipment, solving harmonic and reactive power impact problems (such as a case study of a metal processing company in Shanxi).
  • Machinery Manufacturing : Used for motors, rolling mills, injection molding machines, air hammers, and other equipment to reduce reactive power loss and improve power factor.
  • Chemical and Building Materials : To meet the reactive power needs of large mixers, crushers, and pumps, improving power quality.

 

2. Energy and Power Systems

  • Distribution Network Optimization : Used in urban distribution networks (0.4kV voltage level), real-time monitoring of grid parameters (voltage, current, power factor), reducing line loss, and improving power supply capacity.
  • Box-type Substations and Pole-mounted Substations : Outdoor devices can be installed in 10/0.4kV or 6/0.4kV substations to achieve low-voltage reactive power compensation.

 

3. Buildings and Infrastructure

  • High-rise Buildings and Large Venues : To meet the reactive power needs of elevators, air conditioners (variable frequency equipment), and lighting systems, improving power supply efficiency.
  • Residential Communities : Reduce harmonic pollution to the grid from variable frequency air conditioners, electric water heaters, and other equipment, reducing transformer losses.

 

4. Transportation

  • Ports and Mines : Used for cranes, hoists, conveyors, and other equipment to stabilize grid operation and avoid reactive power backfeeding.
  • Railways and Rail Transit : Compensate for inductive loads such as traction motors to improve the stability of the power supply system.

 

5. Special Load Scenarios

  • Impact Load Equipment : Such as welding machines, mixing mills, and rolling mills, through dynamic compensation to quickly respond to load fluctuations, avoiding over-compensation or under-compensation.
  • Harmonic Control : Combined with harmonic controllers and reactors to suppress harmonic amplification and protect capacitors and grid equipment.

 

6. Intelligent Management Needs

  • Data Monitoring and Remote Control : Equipped with RS485/232 communication interfaces, supporting GPRS/CDMA remote transmission, integrated background management software, realizing real-time analysis and report output of grid data.
  • Unattended Substations : Suitable for highly automated locations, such as factory substations and box substations, reducing manual maintenance costs.

 

Typical Application Cases

  • A ceramic production company in Jiangsu : Using intelligent dynamic compensation (LC+SVG hybrid), solving the harmonic and surge current problems caused by the variable frequency drive of the ball mill, and the power factor is improved to over 0.95.
  • A metal smelting plant in Shanxi : Configured with ANSVC-600-380/B device, compensating for the reactive power demand of the medium-frequency furnace, reducing the transformer load rate, and saving electricity costs by about 15%.

 

Application Scenarios Matching Technical Advantages

  • Dynamic Compensation Needs : Frequent load fluctuations (such as rolling mills and cranes), when traditional static compensation cannot meet the requirements, devices with fast dynamic response speed are needed.
  • Harmonic Sensitive Environments : Such as precision manufacturing workshops, it is necessary to avoid capacitor banks amplifying harmonics, and reactors or SVG modules need to be matched.
  • High Reliability Requirements : Using intelligent composite switches or thyristor switching, surge-free, low-noise, suitable for 24-hour continuous operation in industrial environments.

  Low-voltage dynamic reactive power compensation devices are widely applicable to various occasions with inductive loads, frequent load fluctuations, serious harmonic pollution, or urgent needs to improve the power factor, especially in key areas such as industrial manufacturing, energy supply, building intelligence, and transportation, its application effect is particularly significant. The core value of this device lies in its ability to significantly improve the efficiency of the power grid, effectively reduce energy consumption, extend the service life of related equipment, and fully meet the strict regulatory requirements of power supply departments for power factor.

Key words:

Previous:

Main application areas and characteristics of fiber optic boxes

Next:

Maintenance and precautions for KYN28A-12 switchgear

Recommended Reading

Chengyuan Electric and Siemens join forces to create a better future!

On October 23, 2024, at 2:00 PM, Chengyuan Electric successfully held a project communication and technical sharing meeting with Siemens in the first-floor exhibition hall of the factory. The purpose of this meeting was to strengthen cooperation and communication between both parties, promote innovation, and jointly advance the development of the smart electrical field.

2024-10-29

How to choose suitable box-type substations and cable branch boxes

In the power system, box substations and cable branch boxes play a crucial role and are widely used in various settings, such as industrial parks, residential areas, and commercial buildings. However, faced with a variety of models and specifications available in the market, how can one choose the box substation and cable branch box that best meet their needs?

2023-12-25

The role of cable junction boxes in automated control systems.

The cable branching box is one of the indispensable components in an automation control system, playing an important role in the system by enabling the branching and connection of cables, ensuring the normal operation of the entire system. This article introduces the function of the cable branching box and its significance in automation control systems.

2023-12-15

%E7%AC%AC%E4%B8%80%EF%BC%8C%E6%9C%80%EF%BC%8C%E4%BC%98%E7%A7%80%EF%BC%8C%E5%A2%9E%E5%BC%BA%EF%BC%8C%E4%B8%80%E6%B5%81%EF%BC%8C%E5%8D%93%E8%B6%8A%EF%BC%8C%E9%A2%86%E5%85%88%EF%BC%8C%E5%85%88%E8%BF%9B%EF%BC%8C%E5%BC%95%E9%A2%86

Sorry，当前栏目暂无内容!

您可以查看其他栏目或返回 首页

Sorry，The current column has no content!

You can view other columns or return Home