Power Systems Engineering & Renewable Energy Sources

Power Systems Engineering

An electrical distribution system that functions optimally is essential for a reliable power supply. Every new load, expansion, upgrade and configuration change in your network can produce conditions for which your network was not originally designed. If there are faults in the protection system, any relatively small errors such as overloads, short circuits or earth faults can lead to significant financial damage as a result of uncontrolled interruptions to the voltage in your company. The network studies conducted by RENEWABLE show where critical points occur in your network. We provide you with information so that the right decisions can be made when planning upgrades or expansions of your electrical system. This results in lower operational costs, greater availability and minimum risk of faults. At this field of engineering, RENEWABLE provides the following services:

Load Flow Analysis

Power flow analysis / Voltage drop study / Power factor correction
Device evaluation / Transformer sizing
Real & reactive power losses
Bus voltages, currents, losses & power factors calculations
1&3 phase panel systems according to ANSI, IEC or NEC

Short Cirvuit Analysis According to ANSI / IEEE

Maximum & minimum short circuit fault currents determination
Calculate ½ cycle, 1.5 – 4, & 30 cycle faults (3-phase, L-G, L-L, L-L-G)
Single-phase & panel systems device duty evaluation

Short Circuit Analysis According to IEC 60909 & 61363

Short circuit study calculations based on IEC 60909
Transient short circuit calculations based on IEC 61363
Unbalanced L-G, L-L, & L-L-G fault current analysis
1-pole / 2-pole short circuit device duty for single-phase panel

Ground Grid Systems

Ground grid study according to IEEE
Ground grid study based on FEM

Cable Systems

Cable capacity study according to IEEE 399 / NEC / ICEA P-54-440 / IEC 60502 / IEC 60364
Protective conductor (PE) sizing based on IEC 60364
Electric shock calculations based on IEC 60364
Cable sizing study according to multiple criteria as load current, voltage drop, motor minimum starting voltage, short circuit, current & protective device requirements
Cable Management & Cable Lists

Protective Devises

PROTECTIVE DEVICE COORDINATION STUDY (Over current protective device coordination & selectivity / Equipment damage curve plotting – TCC)
SEQUENCE-OF-OPERATION FAULT ANALYSIS (Device operation sequence graphical visualization / Detailed relay actions / Sequence of events / Normalized time current characteristic curves / Phase & Ground faults (symmetrical & asymmetrical)

Renewable Energy

RENEWABLE provides integrated services to clients seeking an innovative approach to developing and managing renewable energy projects and assets.
Our capabilities include Wind / Solar (photovoltaic and solar thermal) / Hydro / Combined Heat & Power (CHP) / Geothermal / Biomass & Biogas systems. Our services include: