Partial discharge detector is an important tool for detecting internal partial discharge phenomena in electrical equipment such as transformers, switchgear, cables, etc. Its advantages are mainly reflected in the following aspects:
1. Early warning of faults
① Preventive maintenance
Partial discharge is an early sign of insulation degradation in electrical equipment. The detector can capture weak discharge signals (such as Naku level discharge), detect potential defects before insulation damage, avoid sudden failures, and extend equipment life.
Case: Partial discharge inside a transformer may be caused by aging insulation paper or metal particles. The detector can provide early warning months or even years in advance, making it easier to arrange planned maintenance.
② Reduce unplanned downtime
By conducting regular inspections and promptly addressing discharge hazards, equipment shutdown caused by insulation breakdown can be avoided, ensuring the continuity of the power system or industrial production.
2. High sensitivity and precise positioning
① Multi dimensional signal acquisition
Modern detectors can synchronously collect various signals such as high-frequency current (HFCT), ultrasonic (AE), ultra-high frequency (UHF), transient earth voltage (TEV), etc., covering different types of discharges (such as corona, surface, internal discharge).
② Accurate positioning of fault location
Time difference positioning method: By using the time difference of signals received by multiple sensors, combined with algorithms to calculate the position of the discharge point, the error can be controlled within centimeters.
Spatial positioning technology: In complex structures such as GIS and switchgear, combined with 3D modeling and acoustic electrical joint positioning, it can quickly locate the fault source.
3. Non invasive detection
① No need for power outage
The detector can be used for detection through couplers (such as HFCT sensors clamped on the grounding wire) or external sensors (such as ultrasonic probes in contact with the equipment casing), without the need for equipment shutdown, reducing detection costs and risks.
② Adapt to complex environments
Suitable for high voltage and strong electromagnetic interference environments, such as substations, wind farms, etc. The sensor design has strong anti-interference ability to ensure data reliability.
4. Data Analysis and Intelligence
① Intelligent diagnostic algorithm
Built in PRPD (phase resolved partial discharge) pattern analysis, PRPS (phase resolved pulse sequence) analysis and other functions can automatically identify discharge types (such as suspended discharge, hole discharge) and compare them with typical defect pattern libraries to assist in determining the cause of faults.
② Trend prediction and health assessment
By monitoring the changes in discharge amplitude, frequency, and other parameters over a long period of time, combined with machine learning models such as LSTM neural networks, the remaining insulation life of equipment can be predicted and maintenance strategies can be optimized.
5. Convenient operation and compatibility
① Portable design
The handheld detector is small in size, light in weight, equipped with a touch screen and intuitive interface, suitable for quick on-site inspections; The online monitoring system can upload real-time data to the cloud and support remote monitoring.
② Multi interface and protocol support
Compatible with IEC 60270 standard, supports communication protocols such as Modbus and OPC UA, and can be integrated with SCADA systems, intelligent inspection robots, etc. to achieve automated data exchange.
6. Economy and safety
① Reduce operation and maintenance costs
By early warning of faults, expensive maintenance costs caused by equipment damage (such as transformer replacement costs reaching millions of yuan) can be avoided, while reducing power outage losses.
② Ensure the safety of personnel
Non contact detection avoids direct exposure to high-pressure environments and reduces personal safety risks; The online monitoring system can achieve unmanned operation and reduce the frequency of manual inspections.
7. Widely applicable in the industry
① Power system: transformers GIS、 Factory testing, handover acceptance, and operation and maintenance inspection of switchgear, cable terminals, and other equipment.
② In the field of new energy: insulation status monitoring of wind/photovoltaic substations and energy storage systems.
③ Rail transit: Partial discharge detection of traction power supply system and contact network.
④ Industrial manufacturing: Quality inspection of high-voltage motors, capacitors, and other equipment.
summarize
The partial discharge detector provides reliable basis for the condition maintenance of electrical equipment through high sensitivity detection, precise positioning, non-invasive operation, and intelligent analysis, effectively balancing equipment reliability and operation and maintenance costs. With the advancement of sensor technology and AI algorithms, their application value in preventive maintenance, smart grids, and Industry 4.0 will be further enhanced.
The ZC-830 partial discharge detector can be widely used for partial discharge detection in power systems, including high-voltage switchgear, ring main unit, voltage/current transformers, and transformers (including dry-type transformers) GIS、 Insulation state detection of overhead lines, cables and other equipment
Kvtester Electronics Technology Co.,Ltd. is a high-tech enterprise specializing in power testing, testing, research and development, production, and sales of testing equipment. It has been engaged in the electrical testing industry for many years, and its products are of high quality. We welcome customers to come and purchase. Service hotline: 0086-27-81778799, to learn more, visit the official website: www.kvtester.com
