First of all, it can play the role of peak regulation for Meng Xi power grid. The existing power supply in Meng Xi Power Grid is mainly thermal power, so peak shaving can only be realized by thermal power units. According to the operation data, the peak shaving range of thermal power units above 200MW is between 30% and 50%, but relevant data show that the economic peak shaving range of thermal power units is generally below 30%. If it exceeds the peak shaving range, the coal consumption of thermal power units will increase greatly, which is also extremely unfavorable to the stable operation of the system. If the completed Hohhot Pumped Storage Power Station participates in the system peak shaving, the peak shaving capacity can be increased by 2400MW, and the peak shaving range of thermal power can be maintained at 30%-35%, which is conducive to the safe, stable and economic operation of the system. However, Meng Xi Power Grid is responsible for transmitting electricity to the Beijing-Tianjin-Tangshan area. Due to the special geographical location and power supply object of Beijing-Tianjin-Tangshan power grid, the quality of transmission is very high and must meet the requirements stipulated in the contract. With the increase of outgoing load year by year and the increase of peak-valley difference, higher requirements are put forward for the dispatching operation of Meng Xi power grid. At the peak of the outgoing load, priority must be given to the outgoing load, and the reduced outgoing load must be absorbed by Meng Xi Power Grid, which requires that the power grid can adjust the peak load and fill the valley in time and have strong adaptability to load changes. Hohhot pumped storage power station has the function of fast switching between power generation and pumping conditions, which is conducive to ensuring high-quality power transmission to Beijing, Tianjin and Tangshan areas.
Secondly, the pumped storage unit has a variety of working conditions, such as power generation, pumping, frequency modulation, phase modulation, static and so on. , and the switching time of each working condition is less than 120 seconds, and the slow time is less than 360 seconds, so it can be started quickly with a black screen. After the power station is put into operation, it can make full use of the characteristics of rapid start-stop and flexible operation of the unit to provide frequency modulation, phase modulation and emergency backup for the power grid, which can improve the safe operation level of the power system, improve the operation status of the power grid, minimize the fluctuation and loss of power grid accidents, and greatly improve the quality and reliability of power supply. For example, if the Hohhot Pumped Storage Power Station is completed, the quality and safety of electricity consumption of ordinary citizens' families will be greatly improved. One more thing, pumped storage power stations are clean energy. Its construction can not only reduce the construction of a large thermal power station of the same scale, but also save coal and reduce fuel consumption, which not only saves resources, but also reduces air pollution, with remarkable environmental benefits. The construction of pumped storage power station has increased the surface water area of Daqingshan, which can improve the local ecological environment, make Daqingshan more beautiful and become a new tourist attraction in Hohhot.
The completed Hohhot Pumped Storage Power Station has the advantages of adjustable peak and valley, fast tracking of load changes and low construction and operation costs, which can undertake the tasks of peak load regulation and valley filling, emergency standby and frequency modulation, and increase the dynamic benefits of the system. It is the best peak-shaving power supply for power grid. At the same time, Hohhot pumped storage power station has good construction conditions and superior economic indicators, which has great system and economic benefits. After completion, it will also become a rare tourist and leisure place in Hohhot, and it is the most ideal place for Qingcheng citizens to travel on holidays.