Kraftkvalitetsstudier

Kraftkvalitetsstudier are systematic assessments of electrical power quality in power systems, including utility networks, industrial facilities, and data centers. The studies aim to quantify and characterize disturbances that can affect equipment performance, energy efficiency, and reliability, and to ensure compliance with relevant standards and grid codes. They are used in design, commissioning, operation, and maintenance to identify problem sources and to inform mitigation strategies.

Typical elements of a kraftkvalitetsstudie include measurement campaigns using power quality meters that record voltage, current, and frequency over a defined period. Key metrics often analyzed are voltage sags and swells, interruptions, transients, flicker, unbalance, and harmonic distortion (THD). Time-domain and frequency-domain analyses may be employed, along with statistical summaries, event logs, and correlation with switching operations or load changes. Standards and guidelines commonly referenced include IEC 61000-4-30 for measurement methods, IEC 61000-3 for grid compatibility, and IEEE 1159 or IEEE 519 for power quality and harmonic limits.

Outputs typically consist of a technical report, annotated data sets, and a set of actionable recommendations. Recommended mitigations can include equipment upgrades (filters, UPS systems, voltage regulators), improved switching practices, harmonic studies and detuning, or expansion of monitoring to maintain ongoing quality assurance. Kraftkvalitetsstudier support utilities and industrial operators in reducing downtime, protecting sensitive equipment, and achieving compliance with regulatory and contractual power quality requirements. The scope can range from short-term diagnostic assessments to long-term monitoring programs.