CAJ | 학술논문

为了解决风光荷等多种随机因素对系统调度带来的问题，需进行含风力发电、光伏发电的电力系统经济调度研究。通过引入风电与光电功率以及负荷预测偏差的概率分布，并考虑各种随机因素之间的关联性，构建了风光荷的联合概率密度函数。建立了典型运行方式下失负荷风险模型和经济调度模型，该模型采用失负荷损失量约束取代一般调度模型的失负荷概率约束。利用改进的超分位数方法，采用蒙特卡罗模拟和解析法相结合进行仿真计算。算例仿真结果表明：基于实际系统运行方式及随机因素关联性，根据典型运行方式经济调度模型，不仅能得到不同置信水平、随机因素不同关联程度的系统最优调度结果，还可在满足系统可靠性的前提下实现经济性最优。
위료해결풍광하등다충수궤인소대계통조도대래적문제，수진행함풍력발전、광복발전적전력계통경제조도연구。통과인입풍전여광전공솔이급부하예측편차적개솔분포，병고필각충수궤인소지간적관련성，구건료풍광하적연합개솔밀도함수。건립료전형운행방식하실부하풍험모형화경제조도모형，해모형채용실부하손실량약속취대일반조도모형적실부하개솔약속。이용개진적초분위수방법，채용몽특잡라모의화해석법상결합진행방진계산。산례방진결과표명：기우실제계통운행방식급수궤인소관련성，근거전형운행방식경제조도모형，불부능득도불동치신수평、수궤인소불동관련정도적계통최우조도결과，환가재만족계통가고성적전제하실현경제성최우。
To solve the power dispatch problem caused by the uncertainties of wind power, photovoltaic generation and load, it is necessary to research economic dispatch of power systems including wind power and photovoltaic generation. This paper introduced the probability model of wind power, photovoltaic power and load forecasting error, constructed joint probability models considering the correlation among the random factors, established load loss risk model and economic dispatch model for typical operation modes. The constraint of load loss will replace the load missing probability constraint of dispatch models. The improved α-superquantile (α-SQ) was introduced, and Monte Carlo simulation and analytic method were combined to resolve optimal model with risk constraints. The simulation shows that, based on actual operational modes of power systems and correlation of randomness, the optimal dispatch results can be achieved at different confidence levels and different correlations of randomness, and optimal-economy can be achieved when the reliability of system is satisfied.