Peak price energy storage case

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.

Will energy storage become the second largest peak-shaving resource?

By 2030, the scale of energy storage will expand rapidly, becoming the second largest peak-shaving resource in addition to thermal power units, as shown in Table 1. With the abundance of peak-shaving resources and the development of power auxiliary service market, the optimization of peak-shaving cost of power system has become an urgent problem.

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.

How much does energy storage cost in China?

The total cost of renewable energy abandonment is 4,930,200 yuan, accounting for 67.40 % of the total cost of peak-shaving. In addition to the peak-shaving cost of energy storage, the arbitrage profit generated by charging and discharging energy storage using time-of-use electricity price is 0.648 yuan/kWh. Fig. 10.

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.

How much does a peak-shaving system cost?

Based on the above technical and economic parameters, the optimal calculation of the peak-shaving market is carried out and the total paid peak-shaving cost of the system on a typical day in summer is 7,314,300 yuan. The electric power balance diagram of different time periods on a typical day in summer is shown in Fig. 8. Fig. 8.