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电力系统需要配置大容量的储能装置,补偿功率变化,适应新能源的大规模发展。更重要的是,近年来电力负荷率较低、负荷波动较大,需要对负荷进行调整。在电力系统中配置适当规模的抽水蓄能,是解决当前风电等新能源大规模发展对电网安全稳定影响问题的最佳选择。分析了抽水蓄能技术的基本原理和特性,阐述了抽水蓄能技术发展的新趋势。介绍了可变速抽水蓄能技术,探讨了双馈方式和全功率方式的整体结构,并提出了在不同模式下的控制策略,分析了新型特殊抽水蓄能电站的构成、技术挑战和解决方案。
The power system needs to allocate large-capacity energy storage devices to compensate for the power changes and adapt to the large-scale development of new energy sources. More importantly, in recent years, the power load rate is low and the load fluctuates greatly, and the load needs to be adjusted. In the power system to configure the appropriate size of pumped storage is to solve the current large-scale development of new energy sources such as wind power grid security and stability of the best choice. The basic principle and characteristics of pumped storage technology are analyzed, and the new trend of pumped storage technology is expounded. The variable speed pumped storage technology is introduced. The overall structure of the doubly fed mode and the full power mode is discussed. The control strategies under different modes are proposed. The composition, technical challenges and solutions of the new type of special pumped storage power station are analyzed.