基于智能电表大数据分析的台区变压器三相不平衡治理
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摘要
针对台区变压器三相不平衡,提出了一种基于智能电表大数据分析的台区变压器三相不平衡治理方法。首先,计算台区用户与台区变压器A,B,C三相电压序列数据之间相关系数,识别每个用户相序;接着,基于用户电流序列数据计算台区变压器A,B,C三相电流序列数据,进而计算台区变压器三相平均不平衡度;最后,以台区变压器三相平均不平衡度最小为目标采用遗传算法搜索1种最优台区用户相序组合,指导配电运检人员精准调整用户相序。该方法在某电网公司台区变压器三相不平衡治理工作中进行了应用验证,取得了较好效果。
Aiming at the three-phase unbalanced control of distribution transformer,a three-phase unbalanced control method based on big data analysis of smart meters is proposed in this paper. Firstly, identify the phase sequence of each user by calculating the correlation coefficient between every user and every phase voltage sequence data. Secondly, the A, B, C three-phase current sequence data are calculated based on every user's sequence data, and then calculate the mean three-phase unbalance. Finally, GA is used to search a best users phase combination to minimize the three-phase unbalance, which can guide the power distribution personnel to accurately adjust the user phase sequence. The method has been applied to the three phase imbalance control of distribution transformer in certain power grid company, and has achieved good results.
Aiming at the three-phase unbalanced control of distribution transformer,a three-phase unbalanced control method based on big data analysis of smart meters is proposed in this paper. Firstly, identify the phase sequence of each user by calculating the correlation coefficient between every user and every phase voltage sequence data. Secondly, the A, B, C three-phase current sequence data are calculated based on every user's sequence data, and then calculate the mean three-phase unbalance. Finally, GA is used to search a best users phase combination to minimize the three-phase unbalance, which can guide the power distribution personnel to accurately adjust the user phase sequence. The method has been applied to the three phase imbalance control of distribution transformer in certain power grid company, and has achieved good results.
引文
[1]何奕枫,郭琳,黄鑫,等.低压配网三相负荷不平衡危害研究[J].青岛大学学报(工程技术版),2017,32(2):67-75.HE Yifeng,GUO Lin,HUANG Xin,et al.Hazard analysis and control of three-phase load unbalance in low voltage distribution networks[J].Journal of Qingdao University(E&T)2017,32(2):67-75.
[2]陈晓科,钟榜,李钙,等.三相不平衡配电系统不同补偿方式下的线路损耗[J].广东电力,2017,30(7):96-100.CHEN Xiaoke,ZHONG Bang,LI Gai,et al.Line loss ofthree-phase unbalanced power distribution system under different compensation modes[J].Guangdong Electric Power,2017,30(7):96-100.
[3]王晓文,申凯,高强,等.配电网三相不平衡抑制方法综述[J].沈阳工程学院学报(自然科学版),2016,12(1):40-47.WANG Xiaowen,SHEN Kai,GAO Qiang,et al.Summary on suppression methods for three-phase unbalance in distribution network[J].Journal of Shenyang Institute of Engineering(Natural Science),2016,12(1):40-47.
[4]彭春华,陈首昆,于蓉.基于模拟结晶算法的长效三相平衡优化换相策略[J].中国电机工程学报,2014,34(22):3760-3767.PENG Chunhua,CHEN Shoukun,YU Rong.An optimal phase swapping strategy for long-term three-phase balancing using a novel simulated crystallizing algorithm[J].Proceedings of the CSEE,2014.34(22):3760-3767.
[5]缪伟,任思源,庞英俊,等.基于配电网三相不平衡问题的多目标优化调节策略研究[J].智能电网,2017,5(1):69-74.MIAO Wei,REN Siyuan,PANG Yingjun,et al.Study on multi-objective optimal regulation strategy based on threephase unbalance in distribution network[J].Smart Grid,2017,5(1):69-74.
[6]方恒福,盛万兴,王金丽,等.配电台区三相负荷不平衡实时在线治理方法研究[J].中国电机工程学报,2015,35(9):2185-2193.FANG Hengfu,SHENG Wanxing,WANG Jinli,et al.Research on the method for real-time online control of three-phase unbalanced load in distribution area[J].Proceedings of the CSEE,2015,35(9):2185-2193.
[7]傅军栋,喻勇,黄来福.不平衡负载的一种更加经济的补偿方法[J].电力系统保护与控制,2015,43(2):126-132.FU Jundong,YU Yong,HUANG Laifu.A more economical compensation method for unbalanced load[J].Power System Protection and Control,2015,43(2):126-132.
[8]SITI M W,DAN V N,JIMOH A A,et al.Reconfiguration and load balancing in the LV and MV distribution networks for optimal performance[J].IEEE Transactions on Power Delivery,2007,22(4):2534-2540.
[9]耿俊成,张小斐,郭志民,等.基于离散Fréchet距离和剪辑近邻法的低压配电网拓扑结构校验方法[J].电测与仪表,2017,54(5):50-55.GENG Juncheng,ZHANG Xiaofei,GUO Zhimin,et al.Topology verification of low-voltage transformer areas based on discrete Frechet distance and editing nearest-neighbors method[J].Electrical Measurement&Instrumentation,2017,54(5):50-55.
[10]耿俊成,吴博,万迪明,等.基于离群点检测的低压配电网拓扑结构校验[J].电力信息与通信技术,2017,15(5):61-65.GENG Juncheng,WU Bo,WAN Diming,et al.Lowvoltage transformer area topology verification based on outlier detection[J].Electric Power ICT,2017,15(5):61-65.
[11]马立肖,王江晴.遗传算法在组合优化问题中的应用[J].计算机工程与科学,2005,27(7):72-73.MA Lixiao,WANG Jiangqing.Application of genetic algorithms in solving the optimal combination problem[J].Computer Engineering&Science,2005,27(7):72-73.
[12]游金阔,黄霆,黄道姗,等.基于改进遗传算法的交直流系统低压减载优化策略[J].电力系统保护与控制,2016,44(14):40-47.YOU Jinkuo,HUANG Ting,HUANG Daoshan,et al.Under-voltage load shedding optimization allocation for AC/DC hybrid system based on genetic algorithm[J].Power System Protection and Control,2016,44(14):40-47.
[13]梁捷,李刚.基于节点特征分类的配电网重构辐射约束处理法[J].广东电力,2016,29(8):91-95.LIANG Jie,LI Gang.Radial constraint handling method for reconfiguration of power distribution network based on feature classification of nodes[J].Guangdong Electric Power,2016,29(8):91-95.
[14]江龙才.基于遗传算法的配用电光通信网路径寻优方法[J].电力信息与通信技术,2016,14(4):112-116.JIANG Longcai.Optical communication network path optimization method for distribution and utilization based on genetic algorithm[J].Electric Power ICT,2016,14(4):112-116.
[15]刘俊毅,黄红兵,章毅,等.基于非一致性业务均衡的电力通信网路由分配方法[J].电力信息与通信技术,2017,15(10):103-108.LIU Junyi,HUANG Hongbin,ZHANG Yi,et al.A power communication network routing method based on nonuniform service balance[J].Electric Power ICT,2017,15(10):103-108.
[16]Q/GDW519-2010配电网运行规程[S].
[2]陈晓科,钟榜,李钙,等.三相不平衡配电系统不同补偿方式下的线路损耗[J].广东电力,2017,30(7):96-100.CHEN Xiaoke,ZHONG Bang,LI Gai,et al.Line loss ofthree-phase unbalanced power distribution system under different compensation modes[J].Guangdong Electric Power,2017,30(7):96-100.
[3]王晓文,申凯,高强,等.配电网三相不平衡抑制方法综述[J].沈阳工程学院学报(自然科学版),2016,12(1):40-47.WANG Xiaowen,SHEN Kai,GAO Qiang,et al.Summary on suppression methods for three-phase unbalance in distribution network[J].Journal of Shenyang Institute of Engineering(Natural Science),2016,12(1):40-47.
[4]彭春华,陈首昆,于蓉.基于模拟结晶算法的长效三相平衡优化换相策略[J].中国电机工程学报,2014,34(22):3760-3767.PENG Chunhua,CHEN Shoukun,YU Rong.An optimal phase swapping strategy for long-term three-phase balancing using a novel simulated crystallizing algorithm[J].Proceedings of the CSEE,2014.34(22):3760-3767.
[5]缪伟,任思源,庞英俊,等.基于配电网三相不平衡问题的多目标优化调节策略研究[J].智能电网,2017,5(1):69-74.MIAO Wei,REN Siyuan,PANG Yingjun,et al.Study on multi-objective optimal regulation strategy based on threephase unbalance in distribution network[J].Smart Grid,2017,5(1):69-74.
[6]方恒福,盛万兴,王金丽,等.配电台区三相负荷不平衡实时在线治理方法研究[J].中国电机工程学报,2015,35(9):2185-2193.FANG Hengfu,SHENG Wanxing,WANG Jinli,et al.Research on the method for real-time online control of three-phase unbalanced load in distribution area[J].Proceedings of the CSEE,2015,35(9):2185-2193.
[7]傅军栋,喻勇,黄来福.不平衡负载的一种更加经济的补偿方法[J].电力系统保护与控制,2015,43(2):126-132.FU Jundong,YU Yong,HUANG Laifu.A more economical compensation method for unbalanced load[J].Power System Protection and Control,2015,43(2):126-132.
[8]SITI M W,DAN V N,JIMOH A A,et al.Reconfiguration and load balancing in the LV and MV distribution networks for optimal performance[J].IEEE Transactions on Power Delivery,2007,22(4):2534-2540.
[9]耿俊成,张小斐,郭志民,等.基于离散Fréchet距离和剪辑近邻法的低压配电网拓扑结构校验方法[J].电测与仪表,2017,54(5):50-55.GENG Juncheng,ZHANG Xiaofei,GUO Zhimin,et al.Topology verification of low-voltage transformer areas based on discrete Frechet distance and editing nearest-neighbors method[J].Electrical Measurement&Instrumentation,2017,54(5):50-55.
[10]耿俊成,吴博,万迪明,等.基于离群点检测的低压配电网拓扑结构校验[J].电力信息与通信技术,2017,15(5):61-65.GENG Juncheng,WU Bo,WAN Diming,et al.Lowvoltage transformer area topology verification based on outlier detection[J].Electric Power ICT,2017,15(5):61-65.
[11]马立肖,王江晴.遗传算法在组合优化问题中的应用[J].计算机工程与科学,2005,27(7):72-73.MA Lixiao,WANG Jiangqing.Application of genetic algorithms in solving the optimal combination problem[J].Computer Engineering&Science,2005,27(7):72-73.
[12]游金阔,黄霆,黄道姗,等.基于改进遗传算法的交直流系统低压减载优化策略[J].电力系统保护与控制,2016,44(14):40-47.YOU Jinkuo,HUANG Ting,HUANG Daoshan,et al.Under-voltage load shedding optimization allocation for AC/DC hybrid system based on genetic algorithm[J].Power System Protection and Control,2016,44(14):40-47.
[13]梁捷,李刚.基于节点特征分类的配电网重构辐射约束处理法[J].广东电力,2016,29(8):91-95.LIANG Jie,LI Gang.Radial constraint handling method for reconfiguration of power distribution network based on feature classification of nodes[J].Guangdong Electric Power,2016,29(8):91-95.
[14]江龙才.基于遗传算法的配用电光通信网路径寻优方法[J].电力信息与通信技术,2016,14(4):112-116.JIANG Longcai.Optical communication network path optimization method for distribution and utilization based on genetic algorithm[J].Electric Power ICT,2016,14(4):112-116.
[15]刘俊毅,黄红兵,章毅,等.基于非一致性业务均衡的电力通信网路由分配方法[J].电力信息与通信技术,2017,15(10):103-108.LIU Junyi,HUANG Hongbin,ZHANG Yi,et al.A power communication network routing method based on nonuniform service balance[J].Electric Power ICT,2017,15(10):103-108.
[16]Q/GDW519-2010配电网运行规程[S].