考虑多次转供的配电网最大供电能力评估方法
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摘要
最大供电能力是配电网发展规划的重要参考数据,现有评估方法未考虑多次转供,评估结果偏于保守,不能适应配电网自动化发展趋势。鉴于此,提出一种考虑多次转供的配电网最大供电能力评估模型。首先基于路径描述方式,建立负荷的供电路径集。然后以路径的通断状态为变量,以系统负荷之和最大为目标函数,以配电网N-1安全校验准则为约束条件,建立了配电网最大供电能力评估模型。最后采用粒子群算法求解该问题,并设计了粒子N-1校验不通过时的罚函数。算例证明,该方法可以充分挖掘配电网的供电潜力,同时可以针对各类主变故障提出相应的失电负荷转供策略,破解了传统评估方法的局限性。
Total supply capacity is an important reference index for distribution network development planning. Existing evaluation methods do not consider multiple transfers, leading the evaluation results conservative, not adapting to the development trend of distribution automation. In view of this, this paper proposes an evaluation model of the total supply capacity of distribution network considering multiple transfers. Firstly, a load path set is established based on path description mode. Then a total supply capacity evaluation model of distribution network is established, taking path on-off state as variable, the maximum system load sum as objective function and the N-1 security check condition of the distribution network as constraint. Finally, a penalty function of N-1 check is designed, and particle swarm optimization algorithm is used to solve the problem. Case study shows that this method can fully excavate the power supply potential of distribution network. Corresponding power-loss transfer strategy for all kinds of main transformer faults can be put forward and the limitation of traditional evaluation methods can be broken.
Total supply capacity is an important reference index for distribution network development planning. Existing evaluation methods do not consider multiple transfers, leading the evaluation results conservative, not adapting to the development trend of distribution automation. In view of this, this paper proposes an evaluation model of the total supply capacity of distribution network considering multiple transfers. Firstly, a load path set is established based on path description mode. Then a total supply capacity evaluation model of distribution network is established, taking path on-off state as variable, the maximum system load sum as objective function and the N-1 security check condition of the distribution network as constraint. Finally, a penalty function of N-1 check is designed, and particle swarm optimization algorithm is used to solve the problem. Case study shows that this method can fully excavate the power supply potential of distribution network. Corresponding power-loss transfer strategy for all kinds of main transformer faults can be put forward and the limitation of traditional evaluation methods can be broken.
引文
[1]甄国栋,高新智,于树刚,等.配电网的剩余供电能力实用模型[J].电网技术,2018,42(10):3420-3428.Zhen Guodong,Gao Xinzhi,Yu Shugang,et al.The practical residue supply capability model of distribution network[J].Power System Technology,2018,42(10):3420-3428(in Chinese).
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[3]张曦,刘友波,吕林,等.计及高压配电网负荷转供的城市220 kV片区电网供电能力分析[J].电网技术,2017,41(5):1612-1618.Zhang Xi,Liu Youbo,LüLin,et al.Total supply capability analysis of urban 220 kV area power system considering load transfer capability of HV distribution network[J].Power System Technology,2017,41(5):1612-1618(in Chinese).
[4]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):1619-1626.Jing Zhaoxia,Wang Hongyi,Jiang Changxu.Multi-objective optimization of power supply capability of 220 kV power grid concerning load balance[J].Power System Technology,2017,41(5):1619-1626(in Chinese).
[5]肖峻,张苗苗,司超然,等.配电网的供电能力分布[J].电网技术,2017,41(10):3326-3332.Xiao Jun,Zhang Miaomiao,Si Chaoran,et al.Supply capability distribution of distribution systems[J].Power System Technology,2017,41(10):3326-3332(in Chinese).
[6]李欣然,刘友强,朱湘友,等.地区中压配电网容载比的研究[J].继电器,2006,34(7):47-50.Li Xinran,Liu Youqiang,Zhu Xiangyou,et al.Research on capacity-load ratio in district MV distribution networks[J].Relay,2006,34(7):47-50(in Chinese).
[7]李振坤,陈星莺,刘皓明,等.配电网供电能力的实时评估分析[J].电力系统自动化,2009,33(6):36-39,62.Li Zhenkun,Chen Xingying,Liu Haoming,et al.Online assessment of distribution network loading capability[J].Automation of Electric Power Systems,2009,33(6):36-38(in Chinese).
[8]邱丽萍,范明天.城市电网最大供电能力评价算法[J].电网技术,2006,30(9):68-71.Qiu Liping,Fan Mingtian.A new algorithm to evaluate maximum power supply capability of urban distribution netwrok[J].Power System Technology,2006,30(9):68-71(in Chinese).
[9]国家电网公司.Q/GDW 156-2006城市电力网规划设计导则[S].2006.
[10]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.Wang Chengshan,Luo Fengzhang,Xiao Jun,et al.An evaluation method for power supply capability of distribution system based on analyzing interconnection of main transformers[J].Proceedings of the CSEE,2009,29(13):86-91(in Chinese).
[11]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.Xiao Jun,Gu Wenzhuo,Guo Xiaodan,et al.A supply capability model for distribution systems[J].Automation of Electric Power Systems,2011,35(24):47-52(in Chinese).
[12]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.Xiao Jun,Gu Wenzhuo,Gong Xiaoxu,et al.A total supply capability model for power distribution network based on feeders interconnection[J].Automation of Electric Power Systems,2013,37(17):72-77(in Chinese).
[13]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.Ge Shaoyun,Han Jun,Liu Hong,et al.Power supply capability determination considering constraints of transformer overloading and tie-line capacity[J].Proceedings of the CSEE,2011,31(25):97-103(in Chinese).
[14]肖峻,谷文卓,王成山.面向智能配电系统的安全域模型[J].电力系统自动化,2013,37(8):14-19.Xiao Jun,Gu Wenzhuo,Wang Chengshan.A security region model for smart distribution system[J].Automation of Electric Power Systems,2013,37(8):14-19(in Chinese).
[15]肖峻,苏步芸,贡晓旭,等.基于馈线互联关系的配电网安全域模型[J].电力系统保护与控制,2015,43(20):36-44.Xiao Jun,Su Buyun,Gong Xiaoxu,et al.Model of distribution system security region based on interconnections of feeders[J].Power System Protection&Control,2015,43(20):36-44(in Chinese).
[16]肖峻,祖国强,白冠男,等.配电系统安全域的数学定义与存在性证明[J].中国电机工程学报,2016,36(18):4828-4836.Xiao Jun,Zu Guoqiang,Bai Guannan,et al.Mathematical definition and existence proof of distribution system security region J].Proceedings of the CSEE,2016,36(18):4828-4836(in Chinese).
[17]肖峻,左磊,祖国强,等.基于潮流计算的配电系统安全域模型[J].中国电机工程学报,2017,37(17):4941-4949.Xiao Jun,Zuo Lei,Zu Guoqiang,et al.Model of distribution system security region based on power flow calculation[J].Proceedings of the CSEE,2017,37(17):4941-4949(in Chinese).
[18]肖峻,李振生,张跃.基于最大供电能力的智能配电网规划与运行新思路[J].电力系统自动化,2012,36(13):8-14+31.Xiao Jun,Li Zhensheng,Zhang Yue.A novel planning and operation mode for smart distribution networks based on total supply capability J].Automation of Electric Power Systems,2012,36(13):8-14+31(in Chinese).
[19]肖峻,张婷,张跃,等.基于最大供电能力的配电网规划理念与方法[J].中国电机工程学报,2013,33(10):106-113.Xiao Jun,Zhang Ting,Zhang Yue,et al.TSC-based planning idea and method for distribution networks[J].Proceedings of the CSEE,2013,33(10):106-113(in Chinese).
[20]肖峻,祖国强,李晓辉,等.基于最大供电能力的配电网馈线联络建设次序规划方法[J].电力系统自动化,2014,38(11):49-55.Xiao Jun,Zu Guoqiang,Li Xiaohui,et al.A TSC-based planning method on construction order of feeder links for distribution networks J].Automation of Electric Power Systems,2014,38(11):49-55(in Chinese).
[21]杨汾艳,张跃,曾杰,等.计及分布式光伏配电网供电能力计算方法[J].中国电力,2016,49(12):150-155.Yang Fenyan,Zhang Yue,Zeng Jie,et al.Calculation method of power supply capacity of distribution network considering distributed PV[J].Electric Power,2016,49(12):150-155(in Chinese).
[22]郭焱林,刘俊勇,魏震波,等.配电网供电能力研究综述[J].电力自动化设备,2018(1):33-43.Guo Yanlin,Liu Junyong,Wei Zhenbo,et al.Load supply capacity of distribution network[J].Electric Power Automation Equipment,2018(1):33-43(in Chinese).
[23]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.Sun Ming,Dong Shufeng,Xia Shengfeng,et al.Path description based calculation method for available capacity of feeder partition satisfied with N-1 security criterion[J].Automation of Electric Power Systems,2017,41(16):123-129(in Chinese).
[24]Kennedy J,Eberhart R C.Particle swarm optimization[C]//Proc.IEEEInt’l Conf.on Neural Networks,Piscataway,NJ,1995:1942-1948.
[25]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.Xu Chengsi,Dong Shufeng,Sun Zhou,et al.A path searching algorithm for distribution network based on network simplification and depth first traversal[J].Automation of Electric Power Systems,2017,41(24):170-176(in Chinese).
[2]孙丰杰,谢宁,王承民,等.2017年国际供电会议配电系统规划研究成果综述[J].电网技术,2018,42(9):2733-2741.Sun Fengjie,Xie Ning,Wang Chengmin,et al.Review of CIRED2017 on power distribution system planning[J].Power System Technology,2018,42(9):2733-2741(in Chinese).
[3]张曦,刘友波,吕林,等.计及高压配电网负荷转供的城市220 kV片区电网供电能力分析[J].电网技术,2017,41(5):1612-1618.Zhang Xi,Liu Youbo,LüLin,et al.Total supply capability analysis of urban 220 kV area power system considering load transfer capability of HV distribution network[J].Power System Technology,2017,41(5):1612-1618(in Chinese).
[4]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):1619-1626.Jing Zhaoxia,Wang Hongyi,Jiang Changxu.Multi-objective optimization of power supply capability of 220 kV power grid concerning load balance[J].Power System Technology,2017,41(5):1619-1626(in Chinese).
[5]肖峻,张苗苗,司超然,等.配电网的供电能力分布[J].电网技术,2017,41(10):3326-3332.Xiao Jun,Zhang Miaomiao,Si Chaoran,et al.Supply capability distribution of distribution systems[J].Power System Technology,2017,41(10):3326-3332(in Chinese).
[6]李欣然,刘友强,朱湘友,等.地区中压配电网容载比的研究[J].继电器,2006,34(7):47-50.Li Xinran,Liu Youqiang,Zhu Xiangyou,et al.Research on capacity-load ratio in district MV distribution networks[J].Relay,2006,34(7):47-50(in Chinese).
[7]李振坤,陈星莺,刘皓明,等.配电网供电能力的实时评估分析[J].电力系统自动化,2009,33(6):36-39,62.Li Zhenkun,Chen Xingying,Liu Haoming,et al.Online assessment of distribution network loading capability[J].Automation of Electric Power Systems,2009,33(6):36-38(in Chinese).
[8]邱丽萍,范明天.城市电网最大供电能力评价算法[J].电网技术,2006,30(9):68-71.Qiu Liping,Fan Mingtian.A new algorithm to evaluate maximum power supply capability of urban distribution netwrok[J].Power System Technology,2006,30(9):68-71(in Chinese).
[9]国家电网公司.Q/GDW 156-2006城市电力网规划设计导则[S].2006.
[10]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.Wang Chengshan,Luo Fengzhang,Xiao Jun,et al.An evaluation method for power supply capability of distribution system based on analyzing interconnection of main transformers[J].Proceedings of the CSEE,2009,29(13):86-91(in Chinese).
[11]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.Xiao Jun,Gu Wenzhuo,Guo Xiaodan,et al.A supply capability model for distribution systems[J].Automation of Electric Power Systems,2011,35(24):47-52(in Chinese).
[12]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.Xiao Jun,Gu Wenzhuo,Gong Xiaoxu,et al.A total supply capability model for power distribution network based on feeders interconnection[J].Automation of Electric Power Systems,2013,37(17):72-77(in Chinese).
[13]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.Ge Shaoyun,Han Jun,Liu Hong,et al.Power supply capability determination considering constraints of transformer overloading and tie-line capacity[J].Proceedings of the CSEE,2011,31(25):97-103(in Chinese).
[14]肖峻,谷文卓,王成山.面向智能配电系统的安全域模型[J].电力系统自动化,2013,37(8):14-19.Xiao Jun,Gu Wenzhuo,Wang Chengshan.A security region model for smart distribution system[J].Automation of Electric Power Systems,2013,37(8):14-19(in Chinese).
[15]肖峻,苏步芸,贡晓旭,等.基于馈线互联关系的配电网安全域模型[J].电力系统保护与控制,2015,43(20):36-44.Xiao Jun,Su Buyun,Gong Xiaoxu,et al.Model of distribution system security region based on interconnections of feeders[J].Power System Protection&Control,2015,43(20):36-44(in Chinese).
[16]肖峻,祖国强,白冠男,等.配电系统安全域的数学定义与存在性证明[J].中国电机工程学报,2016,36(18):4828-4836.Xiao Jun,Zu Guoqiang,Bai Guannan,et al.Mathematical definition and existence proof of distribution system security region J].Proceedings of the CSEE,2016,36(18):4828-4836(in Chinese).
[17]肖峻,左磊,祖国强,等.基于潮流计算的配电系统安全域模型[J].中国电机工程学报,2017,37(17):4941-4949.Xiao Jun,Zuo Lei,Zu Guoqiang,et al.Model of distribution system security region based on power flow calculation[J].Proceedings of the CSEE,2017,37(17):4941-4949(in Chinese).
[18]肖峻,李振生,张跃.基于最大供电能力的智能配电网规划与运行新思路[J].电力系统自动化,2012,36(13):8-14+31.Xiao Jun,Li Zhensheng,Zhang Yue.A novel planning and operation mode for smart distribution networks based on total supply capability J].Automation of Electric Power Systems,2012,36(13):8-14+31(in Chinese).
[19]肖峻,张婷,张跃,等.基于最大供电能力的配电网规划理念与方法[J].中国电机工程学报,2013,33(10):106-113.Xiao Jun,Zhang Ting,Zhang Yue,et al.TSC-based planning idea and method for distribution networks[J].Proceedings of the CSEE,2013,33(10):106-113(in Chinese).
[20]肖峻,祖国强,李晓辉,等.基于最大供电能力的配电网馈线联络建设次序规划方法[J].电力系统自动化,2014,38(11):49-55.Xiao Jun,Zu Guoqiang,Li Xiaohui,et al.A TSC-based planning method on construction order of feeder links for distribution networks J].Automation of Electric Power Systems,2014,38(11):49-55(in Chinese).
[21]杨汾艳,张跃,曾杰,等.计及分布式光伏配电网供电能力计算方法[J].中国电力,2016,49(12):150-155.Yang Fenyan,Zhang Yue,Zeng Jie,et al.Calculation method of power supply capacity of distribution network considering distributed PV[J].Electric Power,2016,49(12):150-155(in Chinese).
[22]郭焱林,刘俊勇,魏震波,等.配电网供电能力研究综述[J].电力自动化设备,2018(1):33-43.Guo Yanlin,Liu Junyong,Wei Zhenbo,et al.Load supply capacity of distribution network[J].Electric Power Automation Equipment,2018(1):33-43(in Chinese).
[23]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.Sun Ming,Dong Shufeng,Xia Shengfeng,et al.Path description based calculation method for available capacity of feeder partition satisfied with N-1 security criterion[J].Automation of Electric Power Systems,2017,41(16):123-129(in Chinese).
[24]Kennedy J,Eberhart R C.Particle swarm optimization[C]//Proc.IEEEInt’l Conf.on Neural Networks,Piscataway,NJ,1995:1942-1948.
[25]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.Xu Chengsi,Dong Shufeng,Sun Zhou,et al.A path searching algorithm for distribution network based on network simplification and depth first traversal[J].Automation of Electric Power Systems,2017,41(24):170-176(in Chinese).