School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, China.
PLoS One. 2022 Oct 5;17(10):e0275514. doi: 10.1371/journal.pone.0275514. eCollection 2022.
The integrated energy system (IES) optimal scheduling under the comprehensive flexible operation mode of pumping storage is considered. This system is conducive to the promotion of the accommodation of wind and solar energy and can meet the water, electricity and heat needs of coastal areas far away from the energy center. In this study, the joint dispatch between double pumped storage power stations is used to accommodate wind and solar energy better and smooth their fluctuations on the grid. Through the scheduling of water between the high and low reservoirs of double pumped storage power stations and the reservoir of the seawater desalination plant, the impact of storage capacity constraints on pumped storage power plants is reduced. Moreover, the objective function to build the IES optimization scheduling model is to achieve minimum economic cost. The results reveal that the integrated energy system accommodates all wind energy and solar energy. As such, the system increases the average working time of the pumped storage unit by 1.9 hours and reduces the economic cost by 31.50%. Based on the simulation results, the model can enhance the accommodation capability of wind energy and solar energy and improve the system economy.
考虑了在综合灵活运行模式下的综合能源系统（IES）优化调度。这种系统有利于促进风能和太阳能的容纳，并能满足远离能源中心的沿海地区的水电和热力需求。在本研究中，使用双抽水蓄能电站的联合调度来更好地容纳风能和太阳能，并平滑其在电网中的波动。通过双抽水蓄能电站高低水库之间的水量调度和海水淡化厂水库的水量调度，降低了储能容量约束对抽水蓄能电站的影响。此外，建立 IES 优化调度模型的目标函数是实现最低经济成本。结果表明，综合能源系统容纳了所有的风能和太阳能。因此，系统将抽水蓄能机组的平均工作时间增加了 1.9 小时，降低了 31.50%的经济成本。基于仿真结果，该模型可以提高风能和太阳能的容纳能力，提高系统经济性。
