Long term planning models and software serve to provide a platform where testing can be performed and scenarios can be verified in an offline environment such that the operation of the networks can be planned and optimised appropriately.
The electrical authorities around the globe have made various electric grid codes that need to be complied by all the parties involved in generating, operating, transmitting, and new additions (renewables solar and wind).
Sgurr Energy helps the electric grid owners, manufacturer’s, EPC’s and other related parties with Power System Studies (PSS) required to operate, maintain, plan and expand the electric grid with its growing nature.
Study results are generally presented for grid code requirements that cannot be tested onsite, to perform a single-phase short circuit test is dangerous and places the plant at high risk. Simulation study results are required to show suitable performance under such an event.
- Technical information about your system under normal and fault conditions.
- Opportunities to reduce demand & energy costs.
- Reports highlighting problem areas.
- Recommendations on solutions and equipment to system-wide problems.
- Reassurance of protective device ratings.
- Help to avoid damage and injuries.
- Knowledge of the effects of harmonics and transients.
- Selection of BIL, LA ratings.
Steady-state power system analysis.
A. Assessment of voltage and thermal conditions, fault levels (active power Load flow, reactive power compensation, voltage step, fault level contribution of DG).
- Network Model creation.
- Network Losses and Optimization Study.
- Optimal Power flow analysis.
B. Tools used – DIgSILENT, ETAP Power World, PSS/E, SKM Power Tools.
Dynamic power system analysis.
A. Assessment of the transient and dynamic behaviour of equipment e.g. generators, DFIGs, and/or the network (Transient stability, critical clearing time, dynamic voltage step/control, fault ride through).
B. Tools – DIgSILENT, ETAP Power World, PSS/E, SKM Power Tools.
Power Quality & Harmonic analysis.
A. Assessment of harmonics, distortion levels and identification of resonances (Impedance scan, harmonic load flow (including impact of VSC).
- Reactive Power and Voltage Compliance Studies.
- Harmonic & Filter studies.
B. Tools – DIgSILENT, ETAP, Power World, PSS Sincal, SKM Power Tools.
Electro-Magnetic Transient (EMT)/ Insulation Co-ordination Analysis.
A. Assessment of electromagnetic transients and phenomena (Insulation coordination (lightning, switching).
- Voltage Ride Through (Low and High)
- Frequency Response
- Fault Levels
- Protection coordination
- Arc Flash AC/DC
B. Tools – ATP-EMTP, EMTP-RV, PSCAD/ EMTDC.
Battery storage solution analysis.
Distributed energy resource (DER) penetration planning and studies.
Financial Risk Assessment.
Advanced Contingency Analysis
Inverter PPC Model Integration.
Relay co-ordination studies.