The IEC 61724-1 standard for PV system performance monitoring has been revised. A information, that is relevant for system owners, O&M managers, compliance officers, investors and suppliers. The SR30 pyranometer by Hukseflux is the first thermal Sensor to meet the new requirements.
The first edition of “IEC 61724-1: Photovoltaic system performance monitoring – Guidelines for measurement”, data exchange and analysis, dates from 2008. The new 2017 version of the standard is fundamentally different from the 2008 version. It not only defines the measuring system components and procedures (as in the 2008 version), but also aims to keep measurement errors within specified limits. This is done by establishing accuracy classes for monitoring systems.
The new standard includes:
- 3 accuracy classes:
A, B and C, for monitoring systems, to be used in conformity declarations
- accuracy requirements for monitoring equipment per class
- required quality checks (i.e. calibration and maintenance) per class
- recommended minimum number of instruments used as a function of the PV system scale
SR30 pyranometer, released by the Hukseflux Thermal Sensors B.V. in January 2017, is the first pyranometer meeting Class A requirements of the new IEC 61724-1 standard. The device measures solar radiation employing a state-of-the-art thermopile sensor with black coated surface and two domes. The outer pyranometer dome is heated by ventilating the area between the inner and outer dome using RVH™ (Recirculating Ventilation and Heating-technology).
The RVH™-techonology, developed by Hukseflux, suppresses dew and frost deposition and is as effective as traditional ventilation systems, without the maintenance hassle and large footprint. Domes free of dew and frost ensure high data availability. In addition to the highest measurement accuracy and data availability, SR30 pyranometer offers remote diagnostics and low total cost of ownership for PV system performance monitoring.
Hukseflux / Philipp Kronsbein