HYDROELECTRIC TRANSIENT ANALYSIS
WATER HAMMER CALCULATION
TRANSIENT ANALYSIS
- Hydraulic and electric transient analysis
- Hydraulic layout design and optimisation for PSPP and HPP
- Surge tank design and optimisation
- Penstock protection valve transients
- Air-valve sizing
- Hydraulic short-circuit operation
STABILITY/
RESONANCE ANALYSIS
- Resonance risk assessment according to IEC 62882:
part load and full load surge risk, rotor stator interactions (RSI) induced resonance, Von Karman vortex shedding induced resonance (valves, GV, SV) - Penstock resonance risk assessment
- Follow-up of hydraulic machine reduced scale mode tests and transposition of pressure fluctuations from model to prototype according to IEC 62882 and resonance risk assessment
- Hydraulic system dynamics and pressure fluctuations troubleshooting
SYSTEM STABILITY ANALYSIS
ANCILLARY SERVICES & GRID CODE COMPLIANCE
CONTROL SYSTEM OPTIMISATION
POWER NETWORK STABILITY ANALYSIS
- Isolated operation
- Islanded network
- Interconnected grid
OPTIMISATION
- Control/command strategy
- Control/command parameters
- Emergency procedures
- Annual production
ANCILLARY SERVICES ASSESSMENT
- Primary (FCR) and secondary (aFRR) control capabilities assessment
- Evaluation of penstock fatigue risk
- Variable speed unit contribution to grid stability
- Power System Stabilizer (PSS) optimisation
GRID CODE COMPLIANCE
- Short circuits
- Low voltage ride through (LVRT)
- Ramping rates optimisation
- Primary and secondary control for voltage and frequency control
CFD & COMPLEX FLOW SIMULATION
2D/3D STEADY/UNSTEADY CFD (ANSYS-CFX®)
- Surge tank diaphragm optimisation
- Bifurcations flow stability
- Hydraulic short-circuit operation
- Von Karman vortices
- Part/Full load operation
- Valve torque and discharge characteristics
- Air-valve discharge characteristics
RENOV-HYDRO
Quantify the true potential of hydropower considering:
- Concession ends
- Technology limits
- Environment conditions
- Costs
Develop a decision making assistant for hydropower project potential renovation and optimization by considering:
- Hydraulic structures
- Hydraulic turbines
- Electrical systems
- Services to the grid (Ancillary services)
Methodology
- Selection of the options
- Hydraulic performance table
- Simulation of 1 year
- Ancillary services
