What Is A Corona Ring Used For?
The aluminum corona rings are mainly used for high voltage industry to suppress corona effectively. At sharp point (like bushing head) the electric field is high which results in corona. Aluminum corona ring ( shielding ring) should be installed at this point. The ring is suitable for the voltage form of alternating current (AC), which can distribute the high voltage evenly around the object to ensure that there is no potential difference (PD) between the various parts of the ring.
The larger outside diameter, smooth polishing surface finish of aluminum corona rings/shielding rings can help control the local electric field. So electric field gradient reduces and suppresses the corona. As the testing voltage increases the outside diameter of the required corona ring/shielding ring must also increase to obtain better corona control effect. Highv has rich decades of experience in corona rings design and shielding solutions technology, uses advanced manufacturing equipments and high efficient drawing software, which can make sure user’s every project to run more smoothly, safely and efficiently.
Aluminum Corona rings are also known as corona shielding rings, which are widely used in high voltage test equipments and power systems (substations, high voltage transmission line, AC voltage system, etc.) and are mainly made of aluminum alloy. The aluminum corona ring can be divided into single ring and phase to earth one. Meanwhile, in a lot of supporting AC/DC measurement of electrical equipments, often used aluminum corona rings.
Here let Highv team introduce aluminum corona rings application in power and high voltage industry. Then you will be able to get a clear understanding of them.
1. High Voltage Capacitor Banks and Dividers
High voltage capacitor banks and dividers are widely used in electrical power industry, such as standard capacitors, high voltage compensation capacitors, starting capacitors, phase changers, etc. Depending on the specific type, high voltage dividers are used to measure alternating voltage (AC), direct voltage (DC), lightning impulse voltage (LI), and switching impulse voltage (SI) systems.
2. GIS (Gas Insulated Switchgear)
A gas insulated Switchgear (GIS) is a kind of high voltage equipment in which the major structures are contained in a sealed environment with sulfur hexafluoride gas as the insulating medium.
3. Power Transformer&AC Voltage Test Transformer
Power transformer is a device which is used to transfer electricity from one circuit to another by electromagnetic induction. The energy transmission is followed by no change in frequency. AC voltage test transformer is used to be the electrical test performed on the component (such as, transformer bushings, surge arresters, insulating materials) and high voltage testing systems to determine the insulation effect.
4. High Voltage Bushing
A high voltage bushing is a type of insulator that allows an electrical conductor to pass safely through through an earthed barrier such as a wall or a metal tank. What Is A Corona Ring Used For here?
5. Impulse Voltage Generator&Current Generator Testing System
Impulse voltage generator and current generator testing systems are used for impulse voltage testing of power transformers, power cables, gas insulated switchgears (GIS), surge arresters, and other high voltage devices.
6. High Voltage Laboratory
The high voltage laboratory can provide a wide range of possibilities in the field of high voltage testing and research. Many components and measuring systems are used in the high voltage laboratory, such as power transformer, voltage or current generator, high voltage divider, bushings, power cables, corona rings and shields, etc.
7. Other Application
- Surge Arrester
A surge arrester device is used to protect the electrical power system from surges caused by lightning.
- Power Cable (accessory)
The power cables assembly is used for transmission of electrical power and numerous types of electrical testing.
- High Voltage Transmission Line
High voltage transmission lines are used for long distances electricity delivery.
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