Addressing the multi-time scale coupling issues in power and energy balance systems involving pumped storage and cascade hydropower stations
this study focuses on provincial power grids dominated by multi-basin cascade hydropower systems to explore supply-demand balance challenges across different temporal scales. Firstly
the characteristics of the provincial power grid mainly consisting of multi basin cascade hydropower stations with pumped storage and the bidirectional coupling relationship of different time scales were analyzed
and a robust optimization method based on confidence intervals was determined; Secondly
a power and electricity balance model was established at different time scales of year
week
and day; Finally
simulation calculations were conducted based on the planning and construction of a provincial power grid in 2030
and results under different scenarios were analyzed. The simulation results show that the power and electricity balance method proposed in this paper can balance various indicators of different time scale plans and ensure both weekly and daily peak shaving needs while formulating annual plans. Pumped storage power stations can play a role in various situations considering different water and load conditions. They can not only transfer electricity during wet years
but also use large storage capacity to operate in a conventional hydroelectric manner to absorb and replenish water
and provide high-quality rotating backup power for the system.
TWO-STAGE OPTIMAL DISPATCHING OF WIND POWER-PHOTOVOLTAIC-THERMAL POWER-PUMPED STORAGE COMBINED SYSTEM
MULTI-TIME SCALE OPTIMIZATION SCHEDULING OF COMBINED SYSTEM OF NEW ENERGY POWER GENERATION AND PUMPED STORAGE POWER STATION BASED ON NSGA-Ⅱ SERIAL PATTERN SEARCH
不同间距比下筏式波浪能转换装置的水动力性能研究
基于物理神经网络的风电机组转矩-桨距角协同控制策略
新型电力系统多级运行指标协同的电碳优化控制策略
Related Author
潘婷
王俐英
丁红坚
曾鸣
张晓春
苏一博
周旭艳
Luo Yuanxiang
Related Institution
School of Electrical Engineering, Northeast Electric Power University
PowerChina Beijing Engineering Co., Ltd.
State Grid XinYuan Group Co., Ltd.
North China Branch of State Grid Corporation of China