"The overall operation of the project is stable, the charging and discharging efficiency is stable at more than 85%, and as of May 23, 520000 kilowatt-hours have been discharged." Operator Xiao Xie reports with a walkie-talkie. The energy storage power station project of China Gezhouba Shimen Cement Company (hereinafter referred to as Shimen Cement Company) has been successfully connected to the grid for one month since it was closed and connected to the grid
on April 18. All the indicators are good, and the green and low-carbon development efficiency has gradually emerged. Walking into the waste heat power generation area of Shimen Cement Company, two rows of energy storage bins stand neatly, which is particularly noticeable. This is the first energy storage power station project applied to cement enterprises in Hunan Province, and also a demonstration project of China Gezhouba Cement Company.
It is reported that the project is expected to discharge about 4 million kilowatt-hours annually, save more than 2 million yuan annually, save 1200 tons of standard coal annually, and reduce carbon dioxide emissions by 3240 tons, equivalent to planting 20 hectares of trees annually. While optimizing the company's energy structure, it also contributes to improving the regional ecological environment. In recent years, the contradiction between power supply and demand of
energy storage power stations
is extremely prominent, and the price difference between peak and valley is widening. Peak shaving and valley filling and optimizing the way of power consumption have become an inevitable way for cement enterprises to reduce the cost of power consumption. At the end of 2022, after full investigation and investigation, Shimen Cement Company decided to cooperate with Hunan Yingke Energy Storage Technology Co., Ltd. (Hereinafter referred to as Yingke Energy Storage Company) to build an energy storage power station project to jointly promote the development of energy storage industry on the user side and alleviate the tense situation of power supply and demand in the plant area. The total scale of the
energy storage power station project is 4 MW/8 MWh (that is, the maximum discharge intensity is 4000 kW and the maximum single discharge is 8000 kWh), covering an area of 300 square meters, with a total investment of about 15 million yuan. The project uses high-safety lithium iron phosphate batteries, prefabricated cabin design, energy management system (EMS) and other information technology, the main construction contents are lithium iron phosphate batteries, energy storage bidirectional converters (PCS), booster stations, etc., and adopts the "two-charge and two-discharge" charging and discharging strategy, charging in the low power consumption period and discharging in the peak period. The maximum daily discharge capacity can reach 16000 kWh. The
energy storage power station
project is operated in the contract energy management mode, relying on the "peak-valley electricity price difference" dividend to produce energy-saving benefits. During the cooperation period, Yingke Energy Storage Company is responsible for all investment and equipment maintenance of the project, Shimen Cement Company provides project site and technical support, and both parties share energy-saving benefits in accordance with the agreed proportion. The
energy storage power station can store surplus electric energy in the peak period of photovoltaic power generation, release the stored electric energy in the low period of power generation, and act as the "power bank" of the power supply side; in the peak period of production and power consumption, it can improve the flexible regulation ability of the power grid, effectively realize the peak shaving and valley filling of the power grid, and play the role of the "frequency modulator" of the user side. Since the grid-connected operation of the project, the control mode has been continuously optimized to ensure that the power load of the large grid does not exceed the preset value, which has basically met the requirements of production scheduling.
For a long time, China Gezhouba Cement Company has been implementing the national "double carbon" strategy, starting with optimizing and adjusting the energy structure and industrial structure, actively promoting the development of new energy fields such as photovoltaic and energy storage. The photovoltaic power generation projects with a total capacity of 38.24 MW of 7 subsidiaries of the Company were all connected to the grid in December 2022. The energy storage power station project of Shimen Cement Company was successfully put into operation, which laid a solid foundation for the Company to continue to expand its energy storage business. As an important project for the company to achieve green development, transformation and upgrading, photovoltaic power generation and energy storage power station effectively alleviate the pressure of "two high" power limitation of the affiliated units, and also provide clear path guidance for the company to adhere to the road of high-quality development of energy saving and carbon reduction.
In the next step, China Gezhouba Cement Company will vigorously promote the operation mode of the energy storage power station of Shimen Cement Company, promote the implementation of the energy storage power station project in its kiln line enterprises, and create a new situation for the green development of cement enterprises.
At present, the downward trend of cement demand is prominent, energy prices remain high, costs remain high for a long time, and profit compression has become the norm. Improving energy efficiency and reducing cost pressure have become the key breakthrough points for cement enterprises to enhance their comprehensive strength and market competitiveness.
China Cement Network will hold the "2023 China Cement Energy Conservation and New Energy Development Conference" in Chongqing on July 6-7, 2023. Explore new ways of energy saving and consumption reduction in cement industry.
After the meeting, we will visit Oriental Hope Chongqing Cement .
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