Frequency Response Study

Objective

Frequency response studies are essential for ensuring system stability and compliance with Australian grid codes. These studies focus on evaluating how generation systems respond to frequency disturbances, ensuring grid stability, and optimizing system performance under various operating conditions. We specialize in providing insights into how generating units, including synchronous generators and inverter-based systems, contribute to maintaining frequency stability during disturbances.

Methodology

• Dynamic Frequency Analysis: We assess the impact of frequency deviations on generating units, including synchronous generators and inverterbased systems, during grid disturbances.

• Inertia and Synthetic Inertia Evaluation: We analyze the contribution of system inertia and synthetic inertia from renewable energy systems and BESS to frequency stability.

• Optimization of Frequency Controls: We recommend settings for primary frequency response (PFR), droop control, and governor parameters to maintain frequency within permissible limits.

Examples

We have conducted frequency response studies to evaluate grid firming and grid forming inverters performance during frequency disturbances. The studies ensured compliance with GPS by optimizing the droop control settings and enabling synthetic inertia support.
At a hybrid renewable project with a 200MW BESS, we analyzed the system’s ability to provide fast frequency response (FFR) during sudden load changes. The study ensured the BESS supported grid frequency stability effectively, aligning with grid code requirements.
For a mining facility operating a 20MW gas turbine, we performed a frequency response study to evaluate the turbine’s governor control during grid disturbances.

Through detailed frequency response studies, we ensure that power systems, particularly those with high renewable energy penetration, maintain frequency stability and optimize performance across a variety of operating scenarios.

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