Calculation method for peak-valley price difference of industrial and commercial energy storage

Does energy storage affect peak-shaving cost?

On the other hand, references [35, 36] do not consider the impact of energy storage utilizing peak and off-peak electricity price arbitrage on the peak-shaving cost of the power system, thus failing to fully utilize the peak-shaving capabilities of energy storage.

Does a thermal power unit have a peak-shaving cost?

All thermal power units have no change in the start-stop state in 24 periods, so there is no start-stop peak-shaving cost. The consumption of renewable energy in typical winter days is shown in Fig. 13. It can be seen that there are different degrees of renewable energy abandonment during periods 12–17.

What is the quantification model of power system peak-shaving cost?

According to the typical daily renewable energy and load characteristics of Ningxia region, the quantification model of power system peak-shaving cost is established. The model takes into account the time-of-use electricity price factor. The objective function is to minimize the total peak-shaving cost of power system.

What is Peak-Valley price ratio?

The peak-valley price ratio adopted in domestic and foreign time-of-use electricity price is mostly 3–6 times, and even reach 8–10 times in emergency cases. It is generally believed that when the peak-valley price difference transcends 0.7 CNY/kWh, the energy storage will have the peak-valley arbitrage profit space (Li and Li, 2022).

What is the technical cost characteristic boundary of peak-shaving resources?

Thus, the technical cost characteristic boundary of various peak-shaving resources is determined. According to the typical daily renewable energy and load characteristics of Ningxia region, the quantification model of power system peak-shaving cost is established. The model takes into account the time-of-use electricity price factor.

What is the peak valley difference of a net load curve?

However, it can be seen that the peak valley difference of the typical daily net load curve in summer is higher than that in winter. Their peak-valley differences are 8480 MW and 5910 MW respectively. 4.2. Technical and economic parameters