The GIS/GIL Integrated Online Monitoring System combines five core functions: partial discharge monitoring, GIL fault location, circuit breaker mechanical characteristic monitoring, and SF₆ gas humidity and concentration monitoring. Utilising its high sensitivity and stability, the system is capable of automatically identifying and precisely locating partial discharges and equipment faults, providing comprehensive real-time condition monitoring and intelligent operation and maintenance support for applications such as power transmission and distribution, and high-voltage switchgear.
Precise PD Identification & Localization: The system intelligently identifies PD types with 95% accuracy, and provides centimeter-level localization with an error ≤20cm.
Multi-dimensional Spectrum Analysis: Supports UHF PRPS, PRPD characteristic spectra and customizable time-accumulated spectra to visualize discharge features and trends.
High-performance Sensing: Equipped with high-sensitivity sensors and an ultra-wide dynamic range to capture weak discharge signals accurately.
Reliable Alarm & Anti-interference: Features a robust alarm strategy to minimize false alarms; built-in software filtering (full-pass, high-pass, low-pass) enhances signal purity.
Flexible Synchronization: Supports four synchronization modes: internal, external, power supply, and intelligent synchronization, adapting to diverse testing scenarios.
Long-term uninterrupted online monitoring for substation GIS/GIL equipment
Real-time partial discharge monitoring and early warning of internal insulation defects
Online monitoring of SF6 gas density, moisture and leakage
On-line condition monitoring of circuit breaker operating mechanism and mechanical status
Abnormal fault real-time alarm, trend analysis and life prediction for GIS/GIL
Intelligent operation and maintenance management of unattended and smart substations
Whole-process state monitoring for newly commissioned and long-term operated GIS/GIL equipment
Risk pre-control of power grid key hub substation equipment
Contact-type ultrasonic sensor | Frequency range: 20 kHz–200 kHz Dynamic range: ≤40 dB Peak sensitivity: 60 dB(V/(m/s)) |
Built-in UHF sensor | Monitoring bandwidth: 50 Hz–100 MHz Measurement range: 100V to 500kV Material: Aluminium alloy Installation method: Internal |
Ultrasonic fault location sensor | Monitoring bandwidth: 300 MHz–2000 MHz Measurement range: -80 to -20 dBm Material: Aluminium alloy Installation method: Internal |
Hall-effect current sensor | Input current: ±10 A DC Output voltage: 2.5 V ±1.5 V DCSupply voltage: +5 V DC Accuracy: 1% |
Collection device | Sampling rate: ≥100 MHz Positioning accuracy: 20 cm Number of channels: 8 (customisable) |
Built-in travelling wave sensor (2 models) | Dynamic range: ≤40 dB Detection bandwidth: 300–1500 MHz Mean effective height: ≥12 mm |
The GIS/GIL Integrated Online Monitoring System combines five core functions: partial discharge monitoring, GIL fault location, circuit breaker mechanical characteristic monitoring, and SF₆ gas humidity and concentration monitoring.
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