Technological innovation and breakthrough of the capacity and voltage regulating switch for dry vacuum air conditioners

I. Preface

With the rapid development of modern power systems, the stability of power grid operation and power quality have become the focus of attention. Dry-Type Vacuum Tap Changer with Voltage Regulation (V-TC), as an important accessory equipment of transformers, plays a key role in voltage regulation and power grid stability. Compared with traditional tap changers, dry-type capacitive voltage regulating switches have achieved many innovative breakthroughs in insulation technology, arc extinguishing mechanism, intelligent control and reliability. This article will conduct an in-depth discussion from aspects such as technical background, core innovation, application advantages and development trends.

Ii. Technical Background

Traditional oil-immersed tap changers rely on oil for arc extinguishing and insulation when regulating voltage under load. Although the technology is mature, it has the following limitations:

High safety risk: There is a risk of oil leakage and fire.

Complex maintenance: Regular oil replacement and oil circuit cleaning are required, resulting in high operation and maintenance costs.

Poor environmental adaptability: Greatly affected by temperature, humidity and pollution.

Low intelligent compatibility: It is difficult to meet the remote monitoring and automation requirements of modern smart grids.

In response to these issues, dry-type vacuum air conditioning capacitive voltage regulating switches have emerged. Their technological innovations mainly focus on dry insulation, vacuum arc extinguishing, precise control, and intelligent operation and maintenance.

Iii. Core Technological Innovation

1. Dry insulation technology

Innovation point

Air or epoxy resin is used as the insulating medium, completely replacing traditional oil.

Insulating materials undergo high-temperature curing treatment to enhance their withstand voltage capacity and mechanical strength.

Technological breakthrough

It eliminates the risks of oil leakage and fire, and is suitable for high-temperature, high-humidity and dusty environments.

The structure is compact, the equipment volume is significantly reduced, and the installation is flexible and convenient.

2. Vacuum arc extinguishing technology

Innovation point

The tap changer switches in a vacuum environment, and the arc goes out in an extremely short time.

Technological breakthrough

The switching speed is fast, the operation under load is smooth, and there is no arc splashing.

The contact wear is small, significantly extending the service life of the equipment.

Improve the stability of the power system and reduce transient voltage fluctuations.

3. Precise volume adjustment design

Innovation point

Equipped with precise gear linkage and spring mechanism, it enables fine-tuning of tap points.

Voltage fine-tuning can be carried out under power-off or load conditions to improve voltage regulation accuracy.

Technological breakthrough

The tap accuracy has been improved, and the voltage fluctuation is controlled within ±1%.

Adapt to industrial and urban power distribution systems with rapid load changes and large power consumption fluctuations.

4. Intelligent control and monitoring

Innovation point

Built-in position sensor, voltage sensor and remote communication interface.

Supports automatic pressure regulation, remote monitoring and status diagnosis.

Technological breakthrough

The efficiency of operation and maintenance can be improved, and potential faults can be detected through remote monitoring.

Support smart grid dispatching to achieve automatic control of the power grid.

Iv. Analysis of Application Advantages

1. Security advantage

Dry insulation and oil-free design eliminate the risks of oil leakage and fire.

Vacuum arc extinguishing technology reduces contact loss and arc hazards, enhancing operational safety.

2. Environmental adaptability advantage

It can still operate stably in high-temperature, high-humidity and dusty environments.

The compact structure makes it convenient for installation in urban power distribution, industrial plants and complex terrain in mountainous areas.

3. Maintain the advantage of convenience

The dry structure reduces maintenance frequency and eliminates the need for oil replacement.

Modular design makes fault detection and component replacement more efficient.

4. Advantages in improving power quality

Vacuum arc extinguishing and precise capacity adjustment technology result in small voltage fluctuations and fast response.

Improve the stability of grid voltage under load fluctuation conditions and enhance power quality.

V. Typical Application Cases

1. Industrial load voltage regulation

A large industrial park adopts dry vacuum air capacity voltage regulating switches to achieve rapid load switching and voltage stability.

During the switching process, there is no arc splashing, the equipment operation and maintenance cycle is prolonged, and the stability of power supply is enhanced.

2. Urban distribution network

Dry vacuum air conditioning capacity and pressure regulating switches are adopted in urban residential and commercial areas to reduce the risk of oil pollution.

The intelligent voltage regulation system, combined with remote monitoring, realizes automatic voltage regulation and enhances the reliability of power usage.

3. New energy grid connection scenarios

After wind power and photovoltaic power are connected to the power grid, voltage fluctuations occur. The dry-type true air conditioning capacity voltage regulating switch can quickly adjust the tap points to ensure the stability of the power grid.

Vi. Development Trends and Prospects

Intelligent and digital development

In the future, the capacity and pressure regulating switches of dry vacuum air conditioners will increasingly adopt digital monitoring and intelligent algorithms to achieve fully automatic pressure regulation and fault early warning.

Trends in environmental protection and green power

The dry design complies with environmental protection standards and will replace traditional oil-immersed tap changers in the future, achieving green power distribution.

Modular and standardized design

Enhance equipment compatibility and maintenance efficiency, and support multiple transformer capacities and voltage levels.

Adapt to new energy and distributed power grids

Respond quickly to fluctuations in distributed energy to ensure the reliable operation of the smart grid.

Through technological innovations such as dry insulation, vacuum arc extinguishing, precise capacitance adjustment and intelligent monitoring, the dry-type vacuum conditioning capacitance and voltage regulating switch has achieved safe, reliable, environmentally friendly and efficient operation under load voltage regulation. Its breakthrough not only resolves the safety hazards and complex maintenance issues of traditional oil-immersed switches, but also meets the demands of modern smart grids and the integration of new energy. With the continuous development of intelligence, digitalization and environmental protection, dry-type true air conditioning capacity and voltage regulating switches will play an increasingly important role in industrial, urban power distribution and new energy access fields, providing a strong guarantee for the stability of power grids and the improvement of power quality.