IEC 61724 PDF

The standard for PV system performance monitoring has been revised. The new version, released February , defines “accuracy classes”. Abstract — After a PV system is installed, periodic analysis is necessary to track how measured performance meets expectations. IEC outlines methods . The IEC standard for PV system performance monitoring has been revised. This is relevant for system owners, O&M managers.

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IEC 61724-1: what’s it all about?

Both standards define Class A, B and C but with a different meaning. A survey showed that the main reason for most companies not to aim for a Class A status for IEC, is the cost-benefit analysis they made.

It is too costly to obtain a Class A status:. There are two reasons for the extra steps iwc by IEC to comply with an optimal Class A: To achieve this, dew, frost, soiling and instrument deposition as such should be prevented, and customers have to do good product maintenance.

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You should at least do all of the below:.

Delft – The Netherlands T: It outlines equipment, methods, and terminology for performance monitoring and analysis of photovoltaic PV systems. It addresses sensors, installation, and accuracy for monitoring equipment in addition to measured parameter data acquisition and quality checks, calculated parameters, irc performance metrics.

Class A means great care for the maintenance of your pyranometers A survey showed that the main reason for most companies not to aim for a Class A status for IEC, is the cost-benefit analysis they made. It is too costly to obtain a Class A status: The classes A, B and C are site requirements; all individual onsite measurement instruments have to be Class A, in order to obtain a Class A status of the site.

IEC what’s it all about? | PV Tech

It is no use having only one or a few instruments Class A. For pyranometers, the following costs are associated with Class A: You should at least do all of the below: The solution with true air ventilation, not air circulation.

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Emerainville – France T: Class A high accuracy. Class B medium accuracy.

The IEC standard for PV monitoring systems. A quick explanation. | Hukseflux

Class C basic accuracy. Once every 2 years. At least once per week.