作　　者： (王云静）; (王雅坤）; (郑磊）; (曲正伟）;

机构地区： 电力电子节能与传动控制河北省重点实验室（燕山大学）,河北秦皇岛066004

出　　处： 《电机与控制应用》 2017年第8期104-111,共8页

摘　　要： 针对单一Copula函数在描述风速相关性时的限制性,通过引入mix-Copula函数获取具有相关性的多维风速样本。引入条件风险价值理论,将风电功率的不确定性以经济性考量,建立了一种含多风电场的电力系统经济调度模型,协调经济性和安全性的问题。采用场景化理论对目标函数进行处理,使得计算得以简化。以含2个风电场的IEEE30节点系统为算例,分析风速相关性和置信水平对优化结果的影响,验证模型的合理性及有效性。 Considering the limitations of single Copula function, the mix-Copula was introduced to analysis the wind speed correlations. To harmonize the contradictory between economy and safety, an economic dispatch optimization model for power grid containing muhi-wind farms was proposed. The model took the uncertainty in wind power under consideration based on conditional value-at-risk theory. In order to simplify the computation, the scene theory was allied to solve the model. Taking IEEE 30-bus system with two wind farms as an example, the influence of wind speed correlations and the credit level on the results of probabilistically optimal power flow were analyzed, indicating the feasibility and efficiency of the proposed model.

关 键 词： 经济调度 多风电场 函数 条件风险价值 场景化