Wind Power Inspection Technology
• NDT: phased array ultrasonic testing (PAUT), TOFD time-of-flight diffraction testing, conventional ultrasonic testing, magnetic particle testing, and penetrant testing, covering all structural welds of blades, towers, and foundation rings
• Dedicated blade inspection: blade borescope inspection, ultrasonic scanning of blade bonding zones, and leading-edge / trailing-edge defect identification
• Drivetrain inspection: vibration spectrum analysis, gearbox fault diagnosis, bearing condition assessment, oil physicochemical analysis, and wear particle monitoring
• Electrical inspection: generator insulation resistance testing, DC resistance testing, withstand voltage testing, and converter performance testing
• Structure and foundation: tower wall thickness measurement, flange flatness inspection, foundation ring weld inspection, settlement observation, and tilt measurement
• Performance testing: power curve testing, energy efficiency assessment, noise testing, and load testing
• Comprehensive assessment: whole-turbine Post-warranty inspections and assessment, technical retrofitting inspection of aging turbines, and remaining service life assessment
PV Inspection Technology
• Module inspection: EL electroluminescence defect inspection (micro-cracks / broken grid lines / black cores / weak solder joints), I-V curve performance testing, module degradation rate assessment, and wet leakage current testing
• Thermographic inspection: infrared thermography scanning, hot spot localization and grading, and module temperature field analysis
• Electrical inspection: insulation resistance testing, ground continuity testing, DC withstand voltage testing, combiner box performance testing, and inverter efficiency and harmonic testing
• Structural inspection: mounting system strength verification, fastener torque testing, pile foundation pull-out testing, and tracking system accuracy inspection
• System assessment: plant performance ratio (PR) assessment, comparison of simulated and measured energy yield, line loss analysis, and power quality testing
• Comprehensive acceptance: full Post-warranty inspections and assessment of PV plants, grid connection acceptance inspection, and decommissioning assessment
Energy Storage Inspection Technology
• Battery performance testing: battery system capacity testing, charge/discharge efficiency testing, cycle life testing, rate performance testing, and high/low temperature performance testing
• Battery consistency assessment: cell voltage / internal resistance / capacity consistency analysis, SOC dispersion assessment, and battery cluster balancing performance testing
• Electrical safety inspection: insulation resistance testing, withstand voltage testing, ground continuity testing, DC interrupting capacity testing, and lightning protection inspection
• BMS inspection: BMS function verification, SOC estimation accuracy calibration, SOH estimation accuracy testing, fault alarm and protection logic verification, and balancing strategy assessment
• PCS and grid connection inspection: PCS conversion efficiency testing, grid connection performance testing, power quality testing (harmonics / voltage deviation / flicker), low voltage ride-through testing, and off-grid switching testing
• Safety protection inspection: thermal runaway trigger and propagation testing, thermal runaway early warning system verification, fire protection system interlock testing, gas detection system inspection, temperature control system performance testing, and explosion-proof inspection
• Comprehensive assessment: full end-of-warranty safety assessment of energy storage plants, grid connection acceptance inspection, operation and maintenance patrol inspection, and decommissioning safety assessment
