Economic analysis table of energy storage peak shaving project

Does es capacity enhance peak shaving and frequency regulation capacity?

However, the demand for ES capacity to enhance the peak shaving and frequency regulation capability of power systems with high penetration of RE has not been clarified at present. In this context, this study provides an approach to analyzing the ES demand capacity for peak shaving and frequency regulation.

How to calculate peaking demand and capacity of Es?

Then, the power of maximum peaking demand of ES and the capacity of maximum peaking demand of ES are calculated as follows: (30) (31) where is the accumulated power of the continuous charging or discharging for peak shaving of ES; is the duration of each peaking cycle.

How does energy storage power correction affect es capacity?

Energy storage power correction During peaking, ES will continuously absorb or release a large amount of electric energy. The impact of the ESED on the determination of ES capacity is more obvious. Based on this feature, we established the ES peaking power correction model with the objective of minimizing the ESED and OCGR.

Why is peak shaving unbalanced?

Due to the cost of deep peaking of conventional units, the system needs a larger charging power provided by ES to participate in peak shaving when the power of RE is larger (e.g. Fig. 7 (Typical day 3 0:00 to 8:00 p.m.)). In this way, the charge and discharge of ES involved in peak shaving may be unbalanced.

Does penetration rate affect energy storage demand power and capacity?

Energy storage demand power and capacity at 90% confidence level. As shown in Fig. 11, the fitted curves corresponding to the four different penetration rates of RE all show that the higher the penetration rate the more to the right the scenario fitting curve is.

What is the demand power for peaking es?

The demand power for peaking of ES for the four penetration scenarios is 461 MW, 1021 MW, 1362 MW, and 1784 MW at 90% of the confidence level, which is equivalent to 3.83%, 7.85%, 9.64%, and 11.55% of the total installed system capacity respectively.