Coal-fired power peak regulation or energy storage support

Do coal-fired power plants provide peak regulation service?

The hydropower plants, wind plants and solar plants are each aggregated to one plant. The imported electricity is assumed to be a virtual plant. In this study, all plants provide peak regulation (PR) service within the technically feasible load rate range, but the focus is on the DPR service of coal-fired power plants. Fig. 1.

How do coal-fired power units regulate peak loads?

This is the most common and effective way to regulate peak loads. At present, most coal-fired power units in China are under the control of the power grid called Automatic Generation Control (AGC), that is, coal-fired power units track the load fluctuation of the power grid in time by changing their own parameters.

What is the peaking capacity of coal-fired power plants?

It was asked that the load peaking capacity of newly built coal-fired power plants should not be less than 35–40% of the rated power load, in addition to burning inferior coal. These documents have played a formative role in power grid peak regulation for decades.

Do coal-fired power units need more peak shaving tasks?

This means that coal-fired power units will need to undertake more peak shaving tasks for a long period of time. In this paper, we provide an overall review of China׳s coal-fired power units׳ peak regulation with a detailed presentation of the installed capacity, peak shaving operation modes and support policies.

How to improve peak-regulation capability of coal-fired thermal power units?

To enhance the peak-regulation capability, technical means are suggested to be implemented in source-side. For coal-fired thermal power units, the technical modification for denitrification system is necessary.

What is peak regulation & power system flexibility?

The peak regulation (PR) service provided by generation plants are the major source of power system flexibility. PR means that the plants changing its’ generation to match the power demand. As the main power resource in most countries and regions, including China, coal-fired power plants are the most important source of power system flexibility.