基于路径描述模型的城市电网负载均衡方法Load Balancing Method for Urban Power System Based on Path Description Model
徐奇锋,马翔,朱嘉麒,董树锋,卢开诚
XU Qifeng,MA Xiang,ZHU Jiaqi,DONG Shufeng,LU Kaicheng
摘要(Abstract):
负载均衡是降低城市电网运行风险、提高系统运行质量的有效手段,但现有负载均衡研究方法无法兼顾多层转供可能性和方法最优解的获取。对此,提出一种基于路径描述模型的城市电网负载均衡方法,以路径通断状态为变量,将问题转化为混合整数线性规划问题,将负载率控制纳入约束条件,同时以开关操作次数最少为目标函数,求解结果为综合考虑均衡性和可靠性的优化网络拓扑。经算例验证,该方法可有效降低系统主变压器的平均负载率以及负载率差异波动性,降低系统损耗,提升系统可靠性。
Load balancing is an effective way to reduce the risk of urban power grid operation and improve the operation quality of the system. However, the existing load balancing research methods cannot take account of the possibility of multi-layer transfer and the acquisition of the optimal solution. Therefore, the paper proposes a load balancing method for urban power grid based on path description model. The problem is formulated as a mixed-integer linear programming problem with the on-off state of the path as a variable. The load rate control is incorporated into the constraints, and the objective function aims to minimize the number of switching operations. The result is an optimized network topology considering balance and reliability. Examples show that the proposed method can effectively reduce the average load rate of the main transformer and the fluctuation of load rate difference, reduce system losses and improve system reliability.
关键词(KeyWords):
城市电网;负载均衡;路径描述;综合优化
urban power system;load balancing;path description;comprehensive optimization
基金项目(Foundation): 国网浙江省电力有限公司科技项目(5211JH180081)
作者(Author):
徐奇锋,马翔,朱嘉麒,董树锋,卢开诚
XU Qifeng,MA Xiang,ZHU Jiaqi,DONG Shufeng,LU Kaicheng
DOI: 10.19585/j.zjdl.202002003
参考文献(References):
- [1]王成山,罗凤章,肖峻,等.基于主变互联关系的配电系统供电能力计算方法[J].中国电机工程学报,2009,29(13):86-91.
- [2]肖峻,谷文卓,郭晓丹,等.配电系统供电能力模型[J].电力系统自动化,2011,35(24):47-52.
- [3]葛少云,韩俊,刘洪,等.计及主变过载和联络容量约束的配电系统供电能力计算方法[J].中国电机工程学报,2011,31(25):97-103.
- [4]肖峻,谷文卓,贡晓旭,等.基于馈线互联关系的配电网最大供电能力模型[J].电力系统自动化,2013,37(17):72-77.
- [5]肖峻,祖国强,贺琪博,等.馈线联络对配电网最大供电能力的作用机理[J].电力系统自动化,2015,39(8):38-44.
- [6]肖峻,刚发运,黄仁乐,等.柔性配电网的最大供电能力模型[J].电力系统自动化,2017,41(5):30-38.
- [7]汲国强,吴文传,张伯明,等.以降损和载荷均衡为目标的地区电网网络重构快速算法[J].电网技术,2012,36(11):172-178.
- [8]荆朝霞,王宏益,江昌旭.考虑负荷均衡的220 kV电网供电能力多目标优化[J].电网技术,2017,41(5):1619-1628.
- [9]孙明,董树锋,夏圣峰,等.基于路径描述的馈线分区N-1可装容量计算方法[J].电力系统自动化,2017,41(16):123-129.
- [10]徐成司,董树锋,孙洲,等.基于网络简化和深度优先遍历的配电网路径搜索算法[J].电力系统自动化,2017,41(24):170-176.
- [11]蔡玺,屈伟,李秋燕.一种电网云平台资源调度算法的研究[J].四川电力技术,2018,41(4):19-22.
- [12]杨烁,杨卫红,刘艳茹,等.考虑电能替代负荷接入的配电网鲁棒重构优化[J].电力工程技术,2019,38(4):48-55.
- [13]舒舟,杜佩仁,张杰,等.市场化环境下的电力平衡及变电容量需求计算方法研究[J].电力大数据,2018,21(3):15-21.
- [14]连亦承,喻鹏,亓峰,等.一种面向负载均衡的电力OTN路由优化算法[J].广东电力,2018,31(5):42-48.
- [15]刘亚南,徐研,韩华春,等.多端背靠背柔性直流互联系统负载均衡[J].电力工程技术,2018,37(3):84-90.
- [16]朱英伟,李宇泽,侯建生,等.基于变电站全停场景的负荷转移能力评估方法研究及应用[J].电力大数据,2018,21(3):27-32.
- [17]郭林,李杰.面向提高供电能力的中压配电网架精细化规划方法[J].电网与清洁能源,2018,34(1):8-14.
- [18]卫鹏杰,韩卫恒,贺卫华.光伏持续投产对山西电网统配用电负荷影响的分析[J].山西电力,2019(1):6-9.