水电站群迎峰度夏顶峰能力分析方法

Method for Analyzing the Peak Load Capacity of Hydropower Stations during the Summer Peak Season

摘要: 分析迎峰度夏期间水电的顶峰能力对于制定水电运行策略，缓解电网高峰供电压力，保证电力系统安全运行具有重要意义。本文提出水电站群中期顶峰能力分析方法：首先，根据电网下达的电量计划以及统调水电站的初始水位、来水预测情况，建立水电站顶峰发电调度模型，保证水电参与系统调峰时的电量供应；在此基础上，提出了基于水电站日内最大发电能力试算、水电站运行方式动态分类的快速求解方法，并利用电量分配滚动计算，实现水电顶峰问题的高效求解。以我国西南某地区电网水电站群中期顶峰为实例进行研究，结果表明，本文所提方法能够根据水电站发电能力动态调整工作位置，快速得到合理的水电顶峰运行结果，实现水电中期计划的合理安排，为地区电网水电站群迎峰度夏调度运行提供决策支持。

Abstract: Analyzing the peak load capacity of hydropower system during the summer peak season is of great signif-icance for formulating hydropower operation strategies, relieving the pressure on the power grid during peak supply and ensuring the safe operation of the power system. This paper proposes a method for ana-lyzing the mid-term peak load capacity of hydropower system. Firstly, based on the hydropower electricity generation plan issued by the power grid, the beginning water level and water inflow forecast of the hy-dropower stations, a peak power generation dispatch model is established to ensure the electricity supply from hydropower during peak demand periods. Furthermore, a fast solution method is put forward based on the calculation of the maximum daily power generation capacity of the hydropower stations and the dynamic classification of their operation modes. By using rolling calculations for power allocation, efficient solutions to the peak load problem of hydropower stations are achieved. The study is conducted using the mid-term peak load in a region of southwest China as an example. The results show that the proposed method can dynamically adjust the positioning of hydropower stations based on their power generation capacity, quickly obtain reasonable operational results for the mid-term operation of hydropower stations, and facilitate the rational arrangement of the mid-term plan, providing decision support for the schedul-ing and operation of the hydropower stations during the summer peak season.