Power grid solar container peak load regulation

How to evaluate peak-regulation capability in Chinese power grid?

2. Methodology

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.

What is peak regulation?

Peak-regulation refers to the planned regulation of generation to follow the load variation pattern either in peak load or valley load periods. Sufficient peak-regulation capability is necessary for the reliable and secure operation of power grid, especially in urban regions with extremely large peak–valley load difference (Jin et al., 2020).

How to evaluate peak-regulation capability in Chinese power grid?

A visualization method of evaluating peak-regulation capability is proposed. Effective clustering method reduces the number of unit on–off state combinations. Two typical peak-regulation problems in Chinese power grid are analyzed. Four measures are discussed to enhance the peak-regulation capability.

What is the peak load demand of a solar system?

It can be observed from Fig. 4 that the peak load demand of the system is 1500 MW at 12th hour. The next subsequent peak of 1400 MW is observed at 20th hour of the next day. In this case study, load uncertainty is introduced on the maximum side, with the upper bound established as mentioned in Eq. (18), in the absence of PV-ES.

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.

Do PV storage systems mitigate peak loads?

The results indicate that PV storage systems effectively mitigate system peak loads, thereby enabling conventional generators to fulfill the requisite energy demand for DA UC while maintaining the minimum contingency margin and preventing overload.