Solar PV Commissioning And Maintenance

Solar PV Commissioning And Maintenance

COMMISSIONING & MAINTENANCE

‘Aerial thermography is the most efcient method of inspecting
solar PV systems’
OVERVIEW
STANDARD
COMPREHENSIVE
Each report difers in fight altitude, data capture time, level of analysis, and detail of deliverables.

Understanding the level of inspection you require will maximise your ROI.

COMISSIONING & MAINTENANCE

OVERVIEW

For use for quarterly, semi-annual full-site assesments. These reports are also widely used for comissioning inspections and to create a benchmark of the system condition and performance.

‘The most economical method to quickly identify major faults and anomalies in order to gauge the operating
health and production’

ADVANTAGES

  • Quick response times
  • Economical
  • Identifcation of large-scale anomalies that cause a large loss in production and are of the highest
    priority such as:

    • – Module: Entire module is offline
    – String: Offine string due to circuit interruption or reversed polarity
    – Inverter: Inverter section is offine or significantly warmer than system average.
    – Combiner: All strings feeding into single combiner box are ofine or signifcantly warmer than
    system average
    – Tracker: Tilt tracking mechanism in incorrect or stow position

  • Resolution:

    • – Thermal Imagery: 10-15 cm/px
    – HD Imagery: 5 cm/px

DISADVANTAGES

  • Limited Resolution
  • Limits on Module and Sub-Module Anomalies
  • Increased possibility of ‘false-positives’ on sub-module anomalies
  • No absolute temperature accuracy

COMISSIONING & MAINTENANCE

STANDARD

For use for quarterly, semi-annual full-site assesments. These reports are also widely used for comissioning inspections and to create a benchmark of the system condition and performance.

‘Bridge the gap between overview and comprehensive inspections, delivering an in-depth understanding of a site’s
current operating condition without sacrifcing time, costs or quality’

ADVANTAGES

  • All fndings described in Overview
  • Go-to for Operation and Maintenance teams
  • Module physical fndings only includes shattering, delamination and soiling, eg:

    • a. Module physical fIndings
    – Shattering
    – Delamination
    – Soiling
    b. Diode
    c. Hot Spot

  • Resolution:

    • – Thermal Imagery: 5 – 6 cm/px
    – HD Imagery: 1.5 – 2 cm/px

DISADVANTAGES

  • No absolute temperature accuracy
  • Does not meet IEC Standards

COMISSIONING & MAINTENANCE

COMPREHENSIVE

Inspections performed in compliance with IEC standards.

‘These inspections require a large number of man-hours and time-on-site to complete but deliver and incomparable level of insight into the PV system’.

ADVANTAGES

  • All fIndings described in Standard
  • Absolute Temperature Delta’s
  • Highly detailed
  • Identifcation of anomalies such as:

    • – Cell: Single-cell hot spot with ΔT > 4 K
    – Junction Box: Heated junction box with ΔT > 4 K
    – Substring: Substring in short circuit with ΔT > 4 K

  • Analysis in accordance with IEC TS 62446-3 Technical Specifcation:

    • – Photovoltaic Systems – Requirements for testing, documentation and Maintenance Part 3:
    Photovoltaic modules and plants
    – Outdoor infrared thermography: Identifcation of defects with Class of Abnormality (CoA) 2 and 3

  • Resolution:

    • – Thermal Imagery: 3 cm/px
    – HD Imagery: 1 cm/px

DISADVANTAGES

  • Time and Resource Intensive

SOLAR INSPECTION REPORT

EASY TO USE REPORTS THAT REDUCE RISKS,
INCREASE OUTPUT AND IMPROVE EFFICIENCY.

The AI online platform converts aerial imagery into detailed analytics to provide unparrelled insight into your PV system.