China southern power grid energy storage deep peak shaving
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6 FAQs about [China southern power grid energy storage deep peak shaving]
How to improve peak-shaving capacity of Ningxia power system?
Utilizing the deep regulation capability of thermal power units and energy storage for peak-shaving and valley filling is an important means to enhance the peak-shaving capacity of the Ningxia power system. There are existing references on the economic optimization of operation using energy storage and thermal power units.
What is peak shaving in power system?
In the power system, the load usually shows “peak” and “valley” differences. It refers to the fact that the load is higher during certain times of the day and lower during other times of the day. In order to meet the peak demand, the power system needs to carry out peak-shaving.
What is the winning capacity of thermal power unit deep peak-shaving?
The winning capacity of thermal power unit deep peak-shaving not only depends on its technical output limit but also is affected by the unit quotation. In this example, the thermal power unit second grade deep peak-shaving quotation is 550 yuan/MWh, while the abandonment cost of renewable energy is 500 yuan/MWh.
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.
What is deep peak shaving?
Deep peak-shaving is a type of peak-shaving operation mode which is carried out in thermal power plants beyond the basic peak-shaving range when the load difference between peak and valley is large. The paid peak-shaving standard of thermal power units is 50 % of their rated capacity.
What is the maximum deep peak-shaving ratio of thermal power units?
In other words, the maximum deep peak-shaving ratio of thermal power units currently stands at 65 %. From Fig. 5, we observe that as the deep peak-shaving ratio of thermal power units continues to increase, more renewable energy can be accommodated.
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