考虑风电接入的电-热耦合能源系统安全性分析研究

Study on Security Analysis of Electricity-heat Coupled Energy System Considering Wind Power Access

随着多能源耦合程度的加深,电-热耦合能源系统发生级联事故的概率日益增大,其安全性面临新的挑战。针对现有区域综合能源系统安全域研究中未深入考虑风电不确定性影响的问题,建立了考虑风电接入的电-热耦合能源系统实用化安全域模型,提出了考虑风电接入的电-热耦合能源系统实用化安全上边界仿真求解流程。结合算例验证了所提模型的有效性,并对系统安全域的二维/三维安全上边界进行求解观测。结果表明,在二维/三维空间中,风电的不确定性会导致系统实用化安全上边界在一定区域内分布,不再是唯一确定的一条直线或一个平面,分布区域范围的大小与可视化观测管线容量和风机额定容量有关。

Along with the deepening of multi-energy coupling degree,the probability of cascading accidents in an elec⁃tricity-heat coupled energy system is increasing,and its security is facing new challenges.Considering that the impact of wind power uncertainties is not considered in depth in the existing research on the security region of regional integrat⁃ed energy systems,a practical security region model of the electricity-heat coupled energy system considering wind pow⁃er access is established,and the process to find its practical upper security boundary through simulations is proposed.The effectiveness of the proposed model is verified by a case study.Meanwhile,the 2D/3D upper security boundary of the system security region is solved and observed.Results show that in the 2D/3D space,the wind power uncertainties will cause the system’s practical upper security boundary to be distributed in a certain area instead of a definite line or plane.In addition,the extension range is related to the visual observation pipeline capacity and the rated capacity of wind turbine generators.