Southern peak loading and frequency regulation company energy storage project

How effective is peak-load regulation capacity planning?

Based on probabilistic production simulation, a novel calculation approach for peak-load regulation capacity was established in Jiang et al. (2017), which is still effective for peak-regulation capacity planning when some information of renewable energy and loads is absent.

What is peak-regulation capability of a power grid?

Principle of the evaluation method The peak-regulation capability of a power grid refers to the ability of power supply balancing with power load, especially in the peak load and valley load periods. Specifically, the adjustment range of power supply in one day should be high enough to reach the peak load and low enough to reach the valley load.

Why is peak-regulation insufficiency a problem in urban power grids?

In recent years, the power load as well as the peak–valley load difference has increased greatly, causing the shortage of peak-regulation capacity in urban power grids. Furthermore, with the increasing penetration of renewable energy generation (Ahmad et al., 2021), the peak-regulation insufficiency issue becomes even more serious and complicated.

Is the proposed method practical for peak-regulation evaluation of power grid?

(1) The proposed method is practical for peak-regulation evaluation of power grid. On one hand, the proposed method features high efficiency. It only takes a few seconds to complete all computations and give the visual results for a practical power grid.

Can peak-regulation capacity supply be modified if unit parameters are changed?

Even if the unit parameters are changed, the modification for the cumulative diagram of peak-regulation capacity supply is also convenient. However, using the optimization model-based evaluation methods, the mathematical model needs to be solved again regardless of the changes to load curves or unit parameters.

Do inter-regional hydro power imports increase peak-regulation pressure?

Massive inter-regional hydro power imports significantly increase the peak-regulation pressure of inner-regional units in ECG, especially during rainy seasons. The peak–valley load difference of daily load curve determines the peak-regulation demand.