Grid Integration Study Awarded for 25 MW Solar Power Plant
PSS®E-based steady-state and dynamic studies to assess solar plant performance under grid disturbances
Power Projects has been awarded a comprehensive grid integration study for a 25 MW solar power plant. The study will assess the plant's performance under both steady-state and dynamic operating conditions using PSS®E, covering power flow, reactive power capability, voltage and frequency ride-through, active power curtailment and reactive power setpoint control. The assignment is designed to provide a detailed assessment of the solar plant's grid-connected performance across normal operating conditions and specified grid disturbances.
Project Overview
The 25 MW solar power plant will be evaluated through a combination of steady-state power flow and dynamic simulations. The study will assess:
- Steady-state power flow performance
- Reactive power capability
- Low and high voltage ride-through
- Low and high frequency ride-through
- Active power curtailment
- Reactive power setpoint control
The assessment will use PSS®E for the required steady-state and dynamic studies.
Scope of the Grid Integration Study
The project covers the following key study areas:
- Steady-State Power Flow Study
- Low Voltage Ride Through (LVRT)
- High Voltage Ride Through (HVRT)
- Low Frequency Ride Through (LFRT)
- High Frequency Ride Through (HFRT)
- Reactive Power Capability Curve
- Active Power Curtailment Assessment
- Reactive Power Setpoint Control Assessment
Together, these studies provide an assessment of the plant under normal operating conditions and during specified voltage and frequency disturbances.
PSS®E Model Development
A detailed PSS®E simulation model will be prepared using the available project inputs. The modelling scope includes:
- Review and validation of available electrical inputs
- Representation of the 25 MW solar generating plant
- Network preparation for steady-state and dynamic simulations
- Model readiness verification before execution of study cases
This model will provide the basis for the subsequent steady-state and dynamic assessments.
Steady-State Power Flow Assessment
The steady-state power flow study will evaluate the electrical performance of the solar plant under normal operating conditions. The assessment will establish the base operating condition required for the subsequent dynamic simulations and support evaluation of the plant's grid-connected performance.
Voltage Ride-Through Assessment
Dynamic simulations will assess the solar plant during:
- Low Voltage Ride Through (LVRT)
- High Voltage Ride Through (HVRT)
The assessment will evaluate the plant's dynamic behaviour when grid voltage moves outside its normal operating range.
The simulations will assess whether the plant can remain connected and recover following the specified voltage disturbances.
Frequency Ride-Through Assessment
The dynamic study will also cover:
- Low Frequency Ride Through (LFRT)
- High Frequency Ride Through (HFRT)
These simulations will assess plant behaviour during grid frequency deviations and evaluate the dynamic response of the generating system across the required operating conditions.
Reactive Power Capability and Plant Control
The study will include development and assessment of the Reactive Power Capability Curve. The plant's control response will also be evaluated through:
- Active power curtailment
- Reactive power setpoint control
These assessments will help verify the ability of the solar plant to regulate its active and reactive power output in response to grid operating requirements.
Integrated Study Approach
The combination of steady-state and dynamic studies provides a broader assessment of the solar plant's grid-connected performance. The study brings together:
This integrated assessment allows the different aspects of plant performance specified within the project scope to be evaluated using a common PSS®E-based simulation framework.
Project Delivery
Despite the combination of steady-state analysis, multiple dynamic ride-through simulations and plant control assessments, the complete study is scheduled for delivery within 8 weeks upon receipt of the purchase order and complete input data.
The project workflow includes:
- 1Review and validation of project inputs
- 2PSS®E model development
- 3Steady-state power flow assessment
- 4Voltage ride-through studies
- 5Frequency ride-through studies
- 6Reactive power capability assessment
- 7Active power curtailment assessment
- 8Reactive power setpoint control assessment
- 9Consolidation of study outcomes
Supporting Reliable Solar Power Integration
As solar generation becomes an increasingly important part of the power system, detailed grid integration studies provide the technical assessment required to understand plant behaviour under both normal operating conditions and specified network disturbances.
Through this 25 MW solar power plant grid integration study, Power Projects is applying its capability in:
- Steady-state power system studies
- Dynamic grid integration studies
- Voltage ride-through assessment
- Frequency ride-through assessment
- Reactive power capability assessment
- Active power curtailment evaluation
- Reactive power setpoint control assessment
- PSS®E-based simulation and analysis
Planning a Grid Integration Study?
Talk to our engineering team about PSS®E-based steady-state and dynamic grid integration studies for your solar, wind, BESS or hybrid generation project.