EMC-ESD Vereniging

Supraharmonics in the Grid: The Hidden Threat to Power Quality

Supraharmonics in the Grid: The Hidden Threat to Power Quality

door C.N. Rood

It’s no secret that the integration of new technologies into the electrical grid offers numerous advantages. Namely, enabling renewable energy sources that enhance sustainability and efficiency.

However, it also introduces a set of unique challenges for utilities.

One of the most concerning issues is the rise of supraharmonics, or high-frequency emissions in the 2 kHz to 150 kHz range. These emissions are a byproduct of non-linear loads like electric vehicle (EV) chargers, solar farm inverters and other distributed energy resources. Supraharmonics can propagate through power lines and underground cables, often going unnoticed until their negative impacts show up as reliability of performance problems.

How Supraharmonics Impacts Power Quality

The consequences of supraharmonics on power quality can be significant and include:

  • Equipment impacts like overheating, malfunctioning or failure
  • Damage to transformers and power-supply infrastructure
  • Unpredictable power supplies overheat and fail
  • Early component aging

With the increased deployment of sophisticated electronics at the grid’s edge, the levels of supraharmonics-conducted emissions are expected to worsen. That’s why detecting and addressing this issue is now critical.

Challenges to Solving for Supraharmonics

One of the primary challenges in mitigating the effects of supraharmonics is accurate measurement. Traditional power quality analyzers fall short on this in many areas:

  • Sampling rate: Supraharmonics requires a faster sampling rate than what traditional analyzers offer to capture high-frequency events accurately.
  • Reproducibility: Emissions measurements may not be reproducible at different locations, making it challenging to pinpoint the equipment causing the problem.
  • Intermittency: Supraharmonics can be intermittent and change over extended periods of time, making them difficult to detect with conventional equipment.
  • Specialized sensors: For medium-voltage grids, specialized sensors are often required to detect and analyze high-frequency emissions effectively.

 

The Supraharmonic Threat Solution

Fortunately, there is a solution to these challenges: the PQube® 3.

This advanced power analyzer is capable of detecting, quantifying and diagnosing supraharmonics and potential failures that traditional analyzers miss. How? The PQube 3 provides ultra-precise, continuous monitoring and analysis — granting complete visibility into the hidden issues weighing down your operational efficiency.

With the PQube 3, utilities can more proactively address the supraharmonics issue — ensuring the stability and reliability of their power supply.

 

For more information, contact CN Rood.

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C.N. Rood

Degelijk.  Betrouwbaar. Kennispartner.

De CN Rood groep is koploper in kennis en oplossingen op het gebied van test- en meetapparatuur. We onderscheiden ons met een persoonlijke en klantgerichte aanpak. Onze klanten zoeken vaak niet een product, maar een oplossing en wij hebben allemaal de gedrevenheid om mee te werken aan die oplossing. Wat wij het liefste doen: continu bezig zijn met de nieuwste ontwikkelingen op het gebied van test- en meetapparatuur. Nu, en in de toekomst. Want daar ligt nu eenmaal onze passie: het precies willen weten. Zo kunnen we onze klanten optimaal verder helpen.

Wij denken mee, adviseren en begeleiden onze klanten in het maken van de juiste keuze in hun test- en meetapparatuur. Mensen in verschillende sectoren vertrouwen op onze expertise en ons advies. We werken voor overheid, wetenschap, onderwijs, lucht- en ruimtevaart- en auto-industrie in Noord-Europa en de Benelux. Daaronder bevinden zich vele prestigieuze en vooraanstaande organisaties. Vanuit locaties in Zweden, Nederland en België werken meer dan zestig toegewijde professionals aan oplossingen variërend van communicatie-testapparatuur en algemene test- en meetinstrumenten tot apparatuur voor data-acquisitie, logistieke automatisering, aangevuld met consultancy, training en turnkeyoplossingen.

We hebben een historie die teruggaat tot 1938. Onze oprichter, Cornelis Nicolaas Rood, was destijds een pionier in moderne elektronica. Onze mensen bevinden zich ook anno nu graag in de frontlinie van technologische ontwikkelingen. Op onze eigen manier leveren we zo een bijdrage aan belangrijke maatschappelijke vraagstukken. Bijvoorbeeld in energietransitie, quantum computing, medische technologie, de zelfrijdende auto, de auto op zonne-energie, de energie transitie en alle andere deeptech die bijdraagt aan de schonere en betere wereld van morgen.

Daarom letten we ook op onze eigen impact op het milieu en klimaat. Aangezien wij vooral een adviserende functie hebben is onze eigen milieu-footprint gering. Vanzelfsprekend zien we wel toe op een zo duurzaam mogelijke productie van de apparatuur die wij verkopen en zorgen we voor een maatschappelijk verantwoorde bedrijfsvoering. Al onze producten kopen we uitsluitend in bij gecertificeerde fabrikanten die werken met herleidbare en verantwoorde grondstoffen. Gebruikte apparatuur wordt kosteloos opgehaald en gerecycled.

Het zijn maar een paar voorbeelden om duidelijk te maken dat we hechten aan een langetermijnvisie op de wereld om ons heen. Want juist met een geschiedenis van meer dan tachtig jaar kun je goed vooruitkijken. Daarom blijven we ook vooroplopen. Onze brede en diepe technische kennis van test- en meetapparatuur, in combinatie met onze persoonlijke connectie met onze klanten, maken ons uniek in de markt. De CN Rood groep is uw degelijke en betrouwbare kennispartner voor test- en meetapparatuur!

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The CN Rood Group is a leader in knowledge and solutions in the field of test and measurement equipment. We distinguish ourselves with a personal and customer-oriented approach. Our customers often seek not a product but a solution, and we all have the drive to contribute to that solution. What we like doing best: continuously working on the latest developments in test and measurement equipment. Now, and in the future. Because that's where our passion lies: wanting to know exactly what is going on. That way, we can help our customers in the best possible way.

We think along, advise and guide our customers in making the right choice of test and measurement equipment. People in various sectors rely on our expertise and advice. We work for government, science, education, aerospace and automotive industries in Northern Europe and the Benelux. These include many prestigious and leading organisations. From locations in Sweden, the Netherlands and Belgium, more than sixty dedicated professionals work on solutions ranging from communication test equipment and general test and measurement instruments to data acquisition equipment, logistics automation, complemented by consultancy, training and turnkey solutions.

We have a history dating back to 1938. At the time, our founder, Cornelis Nicolaas Rood, was a pioneer in modern electronics. Even today, our people enjoy being at the forefront of technological developments. In our own way, we contribute to important social issues. For instance, in energy transition, quantum computing, medical technology, the self-driving car, the solar car, the energy transition and all other deep-tech that contributes to the cleaner and better world of tomorrow.

Therefore, we also pay attention to our own impact on the environment and climate. Since we mainly have an advisory function, our own environmental footprint is small. Naturally, we do see to it that the equipment we sell is produced as sustainably as possible and we ensure socially responsible business practices. We purchase all our products exclusively from certified manufacturers working with traceable and responsible raw materials. Used equipment is collected and recycled free of charge.

These are just a few examples to make it clear that we value a long-term view of the world around us. Because it is precisely with a history of more than eighty years that it is easy to look ahead. That's why we stay ahead. Our broad and deep technical knowledge of test and measurement equipment, combined with our personal connection with our customers, make us unique in the market. The CN Rood group is your solid and reliable knowledge partner for test and measurement equipment!

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