水光互补组合等效电厂的短期调峰调度方法

梯级水电站与区域光伏电站互补调度一直是研究的热点问题，为充分发挥不同调节类型水电站对光伏电互补作用，本文提出一种基于等效电厂的梯级水光短期互补调度方法。考虑到区域光伏电站发电特性各异，利用kmeans聚类方法划分多个光伏汇聚区。将梯级各个水电站与汇聚区两两组合进行互补调度，通过3种调峰评价指标分析，找出汛平枯各时期较优的水光组合，形成等效电厂。在此基础上，将等效电厂与梯级其余水电厂作为调度对象，进行联合调峰优化调度。以云南省澜沧江流域5座梯级水电站和大理州7座光伏电站为背景，模拟计算结果验证了本文所提方法的可行性，通过几种模型对比分析，该方法可提升梯级水电站与光伏电的整体调峰效果。

Short-term dispatching method for equivalent power plants of hydropower-photovoltaic complementation

Complementary dispatching of cascade hydropower plants and photovoltaic (PV) power plants is always a hot topic in research. To improve the complementary effect of the hydropower plants of different regulation types on the PV power output, this paper presents a new method of short-term complementary dispatching based on a concept of equivalent power plants. Considering the different characteristics of PV power generation, we use the K-means clustering method to divide multiple PV convergence areas. Each hydropower plant is combined with its corresponding convergence area for complementary operation; through analysis of peak regulating indexes, the optimal combination of hydropower and PV plants is found for every time period to construct an equivalent power plant. Then, these equivalent plants and the other hydropower plants are taken as the object for joint peak regulating and dispatching. This new method is verified through simulating a system of five cascade hydropower plants on the Lancang River and seven photovoltaic power plants in Yunnan. It improves the overall peak regulation significantly in comparison with several other models.