HARMONIC MODELLING FOR GRID CONNECTION

Premium Power worked directly with the multinational data centre engineering team to successfully deliver a grid harmonics compliance study.

INDUSTRY SUCCESS

Estimated spend of

9

Euro by 2021

Accounts for

5

of the states power requirements

Over

46

Locations in Ireland

THE CHALLENGE

We were tasked with carrying out power quality analysis (harmonics & transformer inrush) at the sites 220 kV PCC to ensure full compliance with the grid requirements. The project also included power systems analysis (short circuit, protection coordination and arc flash analysis) within the client’s facility to ensure optimum reliability and safety in all fault conditions.

HOW WE HELPED

We developed comprehensive power systems models and delivered the project in two stages.

  • PQ analysis using DIgSILENT to identify VTHD at the 220 kV PCC. The PQ analysis was also used to assess the grid transformers/grids response during transformer start up.
  • Power systems analysis; short circuit calculations were used to assist in the design of both MV & LV protection schemes. Following this prospective arc incident energies were calculated for all 3-phase equipment types.

THE RESULT

The Client was able to prove 100% compliance with the requirements set out by the TSO (transmission system operator). There was no delays in grid transformer energisation and the project could run on schedule. The power systems analysis meant the protection schemes were designed to achieve a reliable and safe electrical system – the settings were designed to ensure prospective arc incident energies were minimised while achieving optimum grading on site.

THE CLIENT

This multinational technology company specialise in information technology and cloud computing. Headquartered in the US, the company operate data centres in a number of different countries.

"Feedback from the utility company stated that the grid PQ compliance report was the best they had ever received. This demonstrates our abilities and knowledge"

George MoklElectrical Engineer

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