Transformer Reactive Power Compensation-Fixed Capacitor Bank Calculation

This letter derives a simple and compact expression for the power of fixed capacitor banks intended for reactive power compensation absorbed by the transformer. Input data for this expression, except no-load current value, are already given on the transformer nameplate. In addition, the expression that gives the percentage no-load current value versus the rated power of standardized transformers is presented. A derived expression is valid for any operating regime of the transformer.