基于市场偏差考核的梯级水电调度模型研究

Research on Cascade Hydropower Dispatching Model Based on Market Deviation Assessment

偏差考核现已成为电力市场交易的常规环节,发电企业若不处理好相关问题、合理调度运行,将影响其市场收益,不利于企业的健康持续发展,进而对电力市场的健全发展造成一定影响。因此,为给企业合理应对偏差考核提供参考,首先对偏差电量考核规则进行概述,建立了计及偏差考核的电站收益模型,随后考虑梯级各电站间水力联系,基于单站运行约束条件,构建了基于偏差考核的梯级水电调度模型,并以四川省某流域梯级共8级电站为例,利用逐步优化算法进行计算。结果表明,梯级各站各考核时段电量偏差率介于-0.799%~0.558%之间,均免受偏差考核。

Deviation assessment has become a routine part of electricity market transactions.If power generation enterprises do not handle the relevant issues properly and dispatch operation reasonably,it will affect their market returns,and is not conducive to the healthy and sustainable development of enterprises,which will have a certain impact on the sound development of the power market.Therefore,in order to provide references for enterprises to deal with deviation assessment reasonably,this paper firstly summarizes the evaluation rules of deviation electricity,establishes a profit model of power station considering deviation assessment.And then considering the hydraulic relationship among cascade power stations,cascade hydropower dispatching model based deviation assessment is established in terms of single hydropower station operation constraints.Taking eight hydropower stations in a certain basin in Sichuan Province for an example,a progressive optimal algorithm is used to solve the model.The results show that the deviation rate of electricity in each assessment period of the cascade stations is between-0.799%and 0.558%,which is free from deviation assessment.