{"id":11180,"date":"2026-09-28T08:32:05","date_gmt":"2026-09-28T06:32:05","guid":{"rendered":"https:\/\/www.neo-messtechnik.com\/?p=11180"},"modified":"2026-09-28T08:32:09","modified_gmt":"2026-09-28T06:32:09","slug":"pqa8000h-supraharmonic-measurement-pv-plant","status":"publish","type":"post","link":"https:\/\/www.neo-messtechnik.com\/en\/pqa8000h-supraharmonic-measurement-pv-plant","title":{"rendered":"Supraharmonic Measurement at a PV Plant: The PQA8000H at Work"},"content":{"rendered":"\n
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Grid-connected PV plants often need to prove that the harmonic currents they feed into the network stay within allowed limits – and getting that proof takes more than a quick check. A recent article on harmonic measurement at PV plants<\/a> walks through exactly when and how that measurement is done, from the certification requirements down to a real-world example with the NEO PQA8000H<\/a>, connected directly at the grid connection point.<\/p>\n\n\n\n

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When a Measurement Becomes Necessary<\/strong><\/strong><\/h2>\n\n\n\n
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Solar inverters feed power into the grid using switching electronics, which can generate harmonic currents alongside the standard 50 Hz waveform. For larger PV plants – particularly those connected via their own transformer station to the medium-voltage grid – certification bodies typically require proof that these harmonic emissions stay within the limits set at the grid connection point. That proof usually starts as a calculation. If the calculation shows the limits might be exceeded, a real measurement on the completed plant becomes necessary.<\/p>\n\n\n\n

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Where and How It’s Measured<\/strong><\/strong><\/h2>\n\n\n\n

The article makes a point that’s easy to underestimate: the measurement has to happen at the actual grid connection point, on the medium-voltage side. Measuring on the low-voltage side of the plant transformer isn’t a reliable substitute, since the transformer’s frequency-dependent behaviour distorts the readings in ways that are hard to correct for afterwards. That means working with the medium-voltage instrument transformers already in place, capturing three-phase currents and voltages, harmonics, interharmonics and supraharmonics simultaneously, across a period with enough variation in PV output to be representative.<\/p>\n\n\n\n

\ud83d\udca1 Want to learn more about the PQA8000H? <\/strong>Visit the product page: PQA8000H<\/a><\/p>\n\n\n\n

The PQA8000H in This Setup<\/strong><\/h2>\n\n\n\n

This is exactly the kind of setup the PQA8000H is built for. Measuring reliably from the fundamental frequency up through the supraharmonic range, under real, fluctuating feed-in conditions, is what turns a calculated compliance risk into a documented, defensible measurement report.<\/p>\n\n\n\n

\ud83d\udc49 Read the full article (German)<\/a><\/p>\n\n\n\n

We’re here for you<\/strong><\/h2>\n\n\n\n

If you’re facing a similar harmonic measurement requirement at a PV plant, or have any questions, feel free to reach out via email or telephone<\/strong> \u2013 or we\u2019d be happy to arrange an online consultation <\/strong>or product demonstration.<\/strong> We’re happy to talk through how the PQA8000H fits into that process.<\/p>\n\n\n\n

Contact us:<\/strong><\/p>\n\n\n\n