计及火电经济出力和最小技术出力的抽水蓄能合理规模预测

Prediction of Reasonable Scale of Pumped Storage Energy Considering Economic Output and Minimum Technical Output of Thermal Power

针对新型电力系统下论证抽水蓄能规模时,采用的多能互补平衡模型仅计及火电最小技术出力进行燃煤机组调峰所带来的深度调峰高昂的成本,忽略了燃煤机组与抽水蓄能机组协调运行的经济性问题,提出将火电经济出力系数与火电最小出力系数作为火电与抽水蓄能协调运行的判别指标,并将其纳入原多能互补平衡分析模型,从经济性角度,以总年费用最小为目标,预测抽水蓄能规模。以某电网为实例,阐述抽水蓄能规模的论证过程,可为类似电网电源发展规划和工程前期设计工作提供借鉴。

The multi-energy complementary balance model used in the demonstration of the scale of pumped storage in the new power system only considers the high cost of deep peak shaving brought about by the minimum technical output of thermal power for coal-fired unit peak shaving,ignoring the economic issue of coordinated operation between coal-fired and pumped storage units.This paper proposed to use the economic output coefficient of thermal power and the minimum output coefficient of thermal power as discriminant indicators for coordinated operation of thermal power and pumped storage,and incorporate it into the original multi-energy complementary balance analysis model.From an economic perspective,the scale of pumped storage was predicted with the minimum total annual cost as goal.Taking a certain power grid as an example,the process of demonstrating the scale of pumped storage energy was illustrated,which provides reference for similar power grid development planning and early engineering design work.