Sizing of Solar System Components

 

Why do we need sizing?

  • To determine the size and capacity of the PV modules, battery, and other Balance of System components.
  • To determine the configuration of batteries and PV modules.

Types of PV System

PV systems can be broadly classified into three categories:


I.












II.












III.











List of Equipment & materials used in the sizing of a PV system

  • PV Modules (Solar Panels)
  • DC Cables
  • DCDB/SJB/AJB
  • ACDB
  • Cable Tray/Conduit
  • Inverter
  • Isolators
  • AC Cables
  • Isolation Transformer (Where Required)
  • Earthing Cable/Earthing Strip
  • Earthing Rods
  • Lightening Arrestor
  • Generation and Net Meter(Bidirectional Meter)

System Sizing

Step 1: PV System Capacity

While sizing the PV system, we mean to manipulate the capacities of generation to the AC load where we specify:

  • DC Capacity of the PV plant
  • AC Capacity of the Inverter output
  • Battery Capacity and the total size as per backup power

Capacity is based on:
  • Energy requirement
  • Space limitation
  • Budget limitation


Step 2: Specific Equipment  Specifications

Where we specify:
  • Make and model
  • Quantities & Sizing
  • Dimensions (e.g. cable length)

Selection is based on:
  • Specification
  • Availability
  • Cost



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