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Harmonizer Power Quality Consulting

Power Quality Consulting in Stockholm

Pylons with high-voltage power lines over a green field under a blue sky

With our help, you can get regular checks on the current situation, solutions to malfunctioning problems, checking the compatibility between the network and different appliances, development of appropriate filtering solutions, checking the power quality effects when installing new appliances, EMC specification before purchasing new equipment, training on power quality issues.

Since the start in 1992 we have helped hundreds of power and industrial companies, both in Sweden and abroad.

Clients:

  • Boliden
  • LKAB
  • ABB
  • Siemens
  • Orkuvirki
  • Nordural
Wind turbines and solar panels in front of a forested mountain range

Our activities

Electric power systems in Sweden and the rest of Europe are currently undergoing major changes in both the generation and distribution of electric power.

  • Traditional energy sources will be replaced by a large number of wind and solar power plants.
  • Transmission and distribution systems must be expanded to cope with increased consumption of electric power in a fossil-free society.
  • Increased cabling
  • The number of inverter-controlled loads for e.g. production of hydrogen, charging of electric cars, etc. will increase.

The consequences of such a change will be:

  • Larger frequency and voltage variations
  • Higher harmonic distortion
  • Transients with higher amplitude and longer duration
  • Higher risk of harmonics and ferro-resonances
  • Higher risk of breakdowns and equipment failures

In order to achieve the planned transition with unchanged operational availability, new power quality solutions are required in the form of:

  • Effective filtering and blocking of harmonics at the source of interference
  • Filter solutions for high frequency harmonics (supratones)
  • Damping filters to counteract harmonics, ferro-resonances and coupling transients.
  • Firewalls in the form of non-linear impedances to prevent uncontrolled propagation of disturbances between different parts of the electricity network

With Harmonizer as a partner, you get access to our collective experience and knowledge in network analysis and applications of various power quality improvement measures. This, in combination with our other partners’ construction expertise and product range, makes it possible to offer total power quality commitments from feasibility study to installation and commissioning.

Services

Technician connecting measuring equipment at a transformer station next to solar panels

Measurements

Power quality measurements are often part of a package of measures to improve the power quality of the installation. To obtain a reliable basis for further analysis, system studies and design, the measurements described below must be carried out correctly.

Charts and measurement data on a transparent screen above a laptop

Simulations

Solutions to power quality problems require accurate network analysis using reliable simulation software. HARMONIZER performs studies of both low and high voltage networks with regard to …

Lecturer in front of an audience in a lecture hall

Education and training

  • Harmonics and harmonic filters
  • Transients, voltage dips, commutation hiccups, rapid voltage variations.
  • Power quality measurements

Products

Two grey Elspec LV Equalizer cabinets

ELSPEC LV Equalizer

for dynamic reactive power compensation. Recommended for rapidly changing loads e.g. spot welds, heat pumps, elevators, rolling mills, etc.

Elspec MV Equalizer, a large light grey cabinet system

ELSPEC MV Equalizer 1-36 kV

Reactive power compensation systems for dynamic loads with rapid reactive power variations e.g. electric arc furnaces, rolling mills, wind farms.

Portable Elspec G4500 analyzer with a laptop and current clamp

Analyzer

ELSPEC G4500 portable power quality analyzer

CYME Power Engineering Software logo

Cyme

Programs for distribution and transmission network simulations

Specialized in power quality

We help our customers to achieve electromagnetic compatibility in the electricity network and thus avoid troublesome and costly disruptions.