Modules · Modeling studies · Module 041
Transient Overvoltage Study
Transient overvoltage restudy where extended ride-through capability requires it, scoped from the ride-through workflow.
About this module
What this module covers.
For certain plants, extension of the ride-through capability of the turbines/inverters may require a transient over-voltage (TOV) restudy based upon engineering judgment. This module performs the TOV study for each applicable plant and coordinates the work.
Module: 041
Kind: Modeling studies
Governing body: Any region
Applies to: Operating plants
Typical time: Four to five weeks from receipt of your data
Dashboard capabilities
- Model Workspace Management: your plant's simulation model files kept in one dashboard workspace, with version tracking
- PSCAD Simulations
Support services
What GridStrong does inside this module.
- Perform a TOV study or demonstrate that any switching devices, such as breakers, capacitor switchers, and surge arresters are properly rated for their expected duty after modifying the ride-through capability of the inverter-based resource (IBR) plant. The PSCAD model will model the detailed feeder cable segments and individual inverters.
Load Rejection Study:
- Analyze the maximum TOV expected when the inverters/turbines are operating at full rated power, and a fault occurs on the feeder side causing the feeder breaker to open.
- A single-line-to-ground (SLG) fault is applied at two locations, the longest and shortest collector feeders, at various points on wave. An SLG is also applied at the collector medium voltage bus.
- Simulation results are analyzed to identify the impact of the worst-case TOVs on equipment and protection settings.
Final deliverables
- Transient Overvoltage Study Report.
- Delivered within four to five weeks of receiving and verifying your data, for up to four plants per month.
What we need from you
- Detailed PSS/E model (if available)
- Single line diagram of facility
- Breaker data sheet for all breakers in the facility
- Basic Insulation Level (BIL) for feeder buses
- Surge arrester I-V characteristics, datasheets and locations
- Transformer datasheet and saturation data
Assumptions and considerations
How the scope is bounded.
Other modules
Every module runs on the same record.
Run this module on one site.
Tell us the plant and the deadline. An engineer confirms the inputs, the schedule and what the Dashboard needs from you.