Events
Electrical Studies for Renewable Energy Grid Connection
Steady-state and Dynamic studies for renewable energy integration, system stability and Grid-Code compliance
Short Circuit Study
Evaluation of the short-circuit currents and the interrupting capacity of the installation.
A short circuit is defined as an event that occurs when two conductors of different phase (or polarity) make contact. Contact between these conductors causes the circuit resistance to decrease to zero and, according to Ohm's law, the circuit current will increase sharply.
The goals of short-circuit studies are to calculate the maximum short-circuit currents of all the lines and busbars of a generating plant, and to verify that they are lower than those of the associated equipment.
The values of these maximum short-circuit currents must be lower than the breaking capacities of the cubicles and outdoor circuit-breakers. Otherwise, breakers would not be able to withstand or dissipate this fault, seriously endangering the whole installation.
If the expected fault levels are higher than the permissible values of the switchgear, the dimensioning of the short-circuit current limiting reactance must be checked to ensure that the requirements are met.
The short circuit study will be carried out considering all the elements that make up the electrical system being studied and following standards, to check all the equipment associated to:
- Substation cubicles, primary switchgear of the electrical infrastructures involved, and protection equipment (fuses and switches.)
- Medium voltage power cables (collector circuits.)
If a limiting resistor is required, the correct dimensioning of the limiting reactance shall be proposed and verified.
Documentation and Downloads
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Brochure - Arteche Services
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Brochure PQ Grid code solutions for renewable power
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Flyer Technical consultancy for renewable energy grid connection
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Flyer Maintenance for capacitor banks and harmonic filters
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