In the power system, the healthy operation of equipment is of paramount importance. If some "minor problems" are not discovered in a timely manner, they may develop into major problems and even lead to accidents. Today, let's talk about a key "health monitor" - a partial discharge detector.
What is partial discharge?
Simply put, Partial Discharge (PD) refers to the phenomenon of partial and discontinuous discharge that occurs inside the insulation medium of power equipment before the voltage reaches the breakdown level. It is like a "small crack" quietly growing in the insulation layer. Although it may not be noticeable at first, it will continue to erode the insulation over time, ultimately leading to equipment insulation breakdown and causing malfunctions.
Why is the monitoring bureau so important?
Early warning and prevention: Partial discharge is an early signal of insulation aging in many high-voltage electrical equipment, such as transformers, cables, GIS, etc. Through monitoring, we can promptly detect potential insulation defects and avoid sudden failures.
Ensuring the safe operation of equipment: Timely handling of partial discharge issues can effectively extend the service life of equipment and reduce operation and maintenance costs.
Improving the reliability of the power grid: A stable and reliable power grid is the cornerstone of normal social operation, and the stable operation of equipment is the prerequisite for the reliability of the power grid.
What factors can affect partial discharge?
There are many factors that affect partial discharge, including:
The quality and aging degree of insulation materials: Poor quality insulation materials or long-term aging insulation layers are more prone to partial discharge.
Internal structure and process of equipment: The gaps, impurities, metal burrs, etc. inside the equipment may become a "breeding ground" for partial discharge.
Operating environment: Environmental factors such as temperature, humidity, and pollutants can also affect the insulation state.
Overvoltage surge: Overvoltage caused by lightning strikes or operations may accelerate insulation aging and induce partial discharge.
Partial discharge detector: a powerful tool for capturing 'invisible threats'
To effectively monitor partial discharge, professional partial discharge detection instruments are indispensable. These instruments can 'hear', 'see', and even 'smell' partial discharge signals that cannot be detected by the naked eye.
Intelligent partial discharge detection: a professional solution from Wuhan UHV Power Technology Co., Ltd
In the field of partial discharge detection, Wuhan UHV Power Technology Co., Ltd. has provided advanced partial discharge online monitoring systems with years of technological accumulation and innovation. Their product integrates multiple detection technologies, enabling online monitoring and real-time monitoring of equipment operation status.
The partial discharge detection equipment of Wuhan UHV Power Technology Co., Ltd. can comprehensively capture partial discharge signals using various technologies such as pulse current method, ultrasonic method, ultraviolet imaging method, etc.
Pulse current method: Determine the discharge amount and discharge position by measuring the weak pulse current generated by discharge.
Ultrasonic method: Partial discharge generates ultrasonic waves when it occurs, and the discharge point is located by receiving these sound waves.
UV imaging method: Discharge generates ultraviolet light, which is captured to visually display the discharge area.
How can we do better?
Regular testing and maintenance: Partial discharge testing is not a one-time task, but requires regular online monitoring and periodic offline testing.
Multi technology integration: By combining different partial discharge detection methods, the nature and location of partial discharge can be more comprehensively and accurately determined.
Data analysis and diagnosis: The intelligent partial discharge detection system of Wuhan UHV Power Technology Co., Ltd. can conduct in-depth analysis of the collected data and provide professional diagnostic recommendations.
Pay attention to insulation status: The health of insulation in power equipment is of utmost importance, and partial discharge testing is just one important part of it.
Frequently Asked Questions (FAQ)
Q1: Will partial discharge necessarily cause equipment damage? A: Partial discharge is a potential danger signal, and if left untreated, long-term accumulation can accelerate insulation aging and increase the risk of damage.
Q2: What is the accuracy of the partial discharge detector? A: Modern partial discharge detectors have high accuracy and can detect weak discharge signals, but their accuracy is also affected by the environment and detection methods.
Q3: Which devices are most prone to partial discharge? A: High voltage electrical equipment, such as high-voltage transformers, transformers, cables, GIS equipment, etc., are common sources of partial discharge.
Q4: What are the characteristics of the partial discharge detection products of Wuhan UHV Power Technology Co., Ltd? A: Their products typically feature high precision, multifunctionality, strong online monitoring capabilities, and advanced diagnostic analysis capabilities.
Q5: Can regular users perform partial discharge testing? A: Partial discharge testing belongs to the professional technical field and usually requires professional technicians and specialized partial discharge testing instruments to complete.
