基于网损最小的智能配电网“源网荷”优化研究Research on Optimization of Source-Grid-Load of Smart Distribution Networks Based on the Minimum Line Loss
朱正元,韦浩,曾莉,王泽民
ZHU Zhengyuan,WEI Hao,ZENG Li,WANG Zemin
摘要(Abstract):
智能配电网的典型特征是有大量分布式电源与多元负荷的接入。在新的电网发展形态下,明确了影响线损的主要因素,提出了基于"源网荷"协调优化的节能降损思路。"源网荷"优化的主要措施有:源源出力优化配置、储能设备最优接入容量与接入位置、网络重构、负荷优化。在分布式电源的最优装接容量和位置的研究成果基础上,研究了多个分布式电源接入情况下的有功出力协调优化;针对储能设备的运行特征,研究了储能设备接入电网的最优容量与位置。从网络重构角度出发,建立了网络重构的计算模型,研究了在分布式电源接入的条件下,进行网络重构的判定条件。从负荷避峰的角度,提出了计算用户可限负荷的方法和避峰的边界条件。
The intelligent distribution networks feature the access of distributed generation and multi-source load. Under the new development patterns of power grid, the paper clarifies the influencing factors of the line loss and proposes an energy-saving and loss reduction idea based on "source-grid-load" coordination and optimization, the measure of which comprise optimized configuration of source-source output, the optimal access capacity and location of energy storage device, network reconstruction and load optimization. Based on the research achievement of optimal access capacity and location of distribution generation, the paper investigates the coordination and optimization of reactive power output with the access of multiple distribution generations;given the operation characteristics of energy storage devices, it expounds the optimal capacity and location of energy storage device for grid connection. The paper also builds a calculation model for network reconstruction and discusses judge criteria of network reconstruction with the access of distribution generation. Finally, the paper proposes a calculation method for load-limit of users and the boundary condition of peak shifting.
关键词(KeyWords):
线损;分布式电源;储能;网络重构;避峰
line loss;distributed generation;energy storage;grid reconfiguration;peak shifting
基金项目(Foundation):
作者(Author):
朱正元,韦浩,曾莉,王泽民
ZHU Zhengyuan,WEI Hao,ZENG Li,WANG Zemin
DOI: 10.19585/j.zjdl.202005010
参考文献(References):
- [1]周孝信,陈树勇,鲁宗相,等.能源转型中我国新一代电力系统的技术特征[J].中国电机工程学报,2018,38(7):1893-1904.
- [2]曾重谦,廖民传,张勇军.配电网电能损耗的原因与主要降损措施[J].供用电,2009(4):28-31.
- [3]付丽伟,王守相,张永武,等.多类型分布式电源在配电网中的优化配置[J].电网技术,2012,36(1):79-84.
- [4]寇凤海.分布式光伏电源对配电网网损的影响[J].电网与清洁能源,2011,27(11):62-68.
- [5]张勇,吴淳.分布式发电机在配电网中的优化配置[J].电力系统保护与控制,2010,38(11):33-37.
- [6]王守相,王慧,蔡声霞.分布式发电优化配置研究综述[J].电力系统自动化,2009,33(18):110-115.
- [7]姚遥,刘东,廖怀庆,等.含储能电池的配电网降损分析[J].华东电力,2010,38(5):677-680.
- [8]胡泽春,宋永华,徐智威,等.电动汽车接入电网的影响与利用[J].中国电机工程学报,2012,32(4):1-10.
- [9]张俊,郭锋,陈思宇,等.分布式光伏大量接入对配电网的影响分析[J].上海电力学院学报,2015,31(3):214-218.
- [10]傅晓飞,纪坤华,廖天明,等.含间歇性DG的主动配电网动态重构研究[J].浙江电力,2018,37(11):70-78.
- [11]董杰,李领南,张纯江,等.微电网中的有功功率和无功功率均分控制[J].电力系统自动化,2016,40(10):90-96.
- [12]张璨,林振智,文福拴,等.计及不确定性因素的多目标网架重构策略优化[J].华北电力大学学报(自然科学版),2012,39(3):13-23.
- [13]余小燕,于继来.基于有功无功联合调整的动态潮流[J].电网技术,2005,29(22):61-65.
- [14]曾鸣,杨雍琦,刘敦楠,等.能源互联网“源-网-荷-储”协调优化运营模式及关键技术[J].电网技术,2016,40(1):114-121.
- [15]范展滔,郑浩,赵晋泉,等.基于动态潮流的网损微增率算法[J].南方电网技术,2016,10(2):77-81.