摘要
基于能量枢纽的电热网优化运行中,忽略能量枢纽设备能量效率随其输入或输出功率变化而变化的特性会导致优化运行结果与实际结果之间存在明显偏差。针对以上问题,首先,采用分段线性化方法逼近设备的可变能量效率,建立标准化矩阵模型对考虑设备可变能量效率的能量枢纽进行描述。其次,以系统购能总成本最小为目标,通过考虑设备可变能量效率的能量枢纽将区域供热网和配电网耦合,建立了电热网优化运行线性模型。最后,通过算例验证了电热网优化运行与能量枢纽设备可变能量效率有关。结果表明:基于设备可变能量效率的电热网运行情况与基于设备恒定能量效率的电热网运行情况相比,运行成本相对误差从12.71%降到了0.03%,风电消纳率增加了4.29%。
In the optimization operation of electric heating networks based on energy hubs,the neglect of the characteristic of energy efficiency of energy hub equipment changing with its input or output power leads to a significant deviation between the optimization operation results and the actual results.To solve this problem,firstly,the piecewise linearization method was used to approximate the variable energy efficiency of the equipment,and a standardized matrix model was established to characterize the energy hub considering the variable energy efficiency of the equipment.Secondly,with the goal of minimizing the total cost of system energy procurement,a linear model for optimizing the operation of the electric heating network was established by coupling the regional heating network and distribution network considering the energy hub with variable energy efficiency of equipment.Finally,numerical examples were used verifying that the optimized operation of the electric heating network is related to the variable energy efficiency of the energy hub equipment.Compared with the operation of the electric heating network based on the constant energy efficiency of the equipment,the relative error of the operating cost decreased from 12.71%to 0.03%,and the wind power consumption rate increased by 4.29%.The operation situation of the electric heating network based on the variable energy efficiency of the equipment,compared with the operation of the electric heating network based on constant energy efficiency of the equipment,the relative error in operating cost dropped from 12.71%to 0.03%,the wind power consumption rate increased by 4.29%。
作者
李红伟
荆浩婕
吴磊
李婷玉
LI Hongwei;JING Haojie;WU Lei;LI Tingyu(School of Electrical Engineering and Information,Southwest Petroleum University,Chengdu 610500,China)
出处
《郑州大学学报（工学版）》
CAS
北大核心
2023年第6期76-83,共8页
Journal of Zhengzhou University（Engineering Science）
基金
国家自然科学基金资助项目(51905457)
国家社会科学基金资助项目(22XGL019)。
关键词
可变能量效率
能量枢纽
标准化矩阵模型
电热网
优化运行
variable energy efficiency
energy hub
standardized matrix model
electric heating network
optimal operation
