配电网典型接线模式下分布式电源的准入容量计算
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摘要
随着分布式电源DG(distributed generation)接入配电网的多样化发展,快速确定DG在不同模式配电网的准入容量是其规划设计和安全运行的重要环节。根据DG接入配电网后馈线稳态运行指标的变化情况,分析了DG准入容量对馈线电压、电流的影响,并定义了电压抬升率。针对单辐射接线、单环网接线、多供一备接线和多分段多联络接线4种典型配电网接线模式,综合节点电压、设备容量和电压抬升率影响因素,提出了一种解析计算DG准入容量的快速实用算法。对深圳电网的10 k V馈线实际案例,计算了前述4种典型接线模式下DG准入容量,验证了所提出的DG准入容量算法的可行性。
With the diversified development of access ways for distributed generation(DG),determining the allowable capacity of DG quickly in different wiring modes of distribution network is the key to its planning/design and safe operation. In this paper,according to the steady-state indexes of the feeder after the access of DG to distribution network,the influence of DG capacity on the feeder voltage and current is analyzed,and the voltage rise rate is defined. For typical wiring modes of distribution network,such as radial grid,single-ring grid,multi-in-service and one back-up grid,andmulti-sectioned and multi-linked grid,a practical and fast algorithm for analyzing and calculating the DG allowable capacity is given by combining the influencing factors such as node voltage,equipment capacity,and voltage rise rate.With the 10 kV feeder in Shenzhen grid as an example,the DG allowable capacities in the above four typical wiringmodes are calculated,which verifies the feasibility of the proposed algorithm for the calculation of DG allowable capacity.
With the diversified development of access ways for distributed generation(DG),determining the allowable capacity of DG quickly in different wiring modes of distribution network is the key to its planning/design and safe operation. In this paper,according to the steady-state indexes of the feeder after the access of DG to distribution network,the influence of DG capacity on the feeder voltage and current is analyzed,and the voltage rise rate is defined. For typical wiring modes of distribution network,such as radial grid,single-ring grid,multi-in-service and one back-up grid,andmulti-sectioned and multi-linked grid,a practical and fast algorithm for analyzing and calculating the DG allowable capacity is given by combining the influencing factors such as node voltage,equipment capacity,and voltage rise rate.With the 10 kV feeder in Shenzhen grid as an example,the DG allowable capacities in the above four typical wiringmodes are calculated,which verifies the feasibility of the proposed algorithm for the calculation of DG allowable capacity.
引文
[1]Zhu Jizhong.Renewable Energy Applications in PowerSystems[M].New York:Nova Science Publishers,2012.
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[8]刘健,同向前,潘忠美,等(Liu Jian,Tong Xiangqian,Pan Zhongmei,et al).考虑过电压因素时分布式光伏电源的准入容量(The maximum power of distributed PVgeneration according to over-voltage in distribution net-work)[J].电力系统保护与控制(Power System Protec-tion and Control),2014,42(6):45-51.
[9]邹宏亮,韩翔宇,廖清芬,等(Zou Hongliang,HanXiangyu,Liao Qingfen,et al).考虑电压质量与短路容量约束的分布式电源准入容量分析(Penetration capacitycalculation for distributed generation considering voltagequality and short circuit capacity constraints)[J].电网技术(Power System Technology),2016,40(8):2273-2280.
[10]郑涛,贾仕龙,潘玉美,等(Zheng Tao,Jia Shilong,PanYumei,et al).基于配电网原故障定位方案的分布式电源准入容量研究(Research on allowed penetration levelof DGs based on the traditional fault location methods)[J].电网技术(Power System Technology),2014,38(8):2257-2262.
[11]陈晓龙,李永丽,赵曼勇,等(Chen Xiaolong,Li Yongli,Zhao Manyong,et al).计及配电网电流保护整定原则的逆变型分布式电源准入容量计算(IBDG penetrationlevel calculation considering current protection settingprinciple for distribution network)[J].电力自动化设备(Electric Power Automation Equipment),2016,36(6):156-162.
[12]钟清,高新华,余南华,等(Zhong Qing,Gao Xinhua,YuNanhua,et al).谐波约束下的主动配电网分布式电源准入容量与接入方式(Accommodating capacity andmode of distributed generation under harmonic constraintin distribution networks)[J].电力系统自动化(Automa-tion of Electric Power Systems),2014,38(24):108-113.
[13]彭春华,于蓉,孙惠娟(Peng Chunhua,Yu Rong,Sun Hui-juan).基于K-均值聚类多场景时序特性分析的分布式电源多目标规划(Multi-objective DG planning based onK-means clustering and multi-scenario timing characteris-tics analysis)[J].电力自动化设备(Electric Power Auto-mation Equipment),2015,35(10):58-65.
[14]谭颖,吕智林,李捷(Tan Ying,LüZhilin,Li Jie).基于改进ELM的风/光/柴/储独立微网分布式电源多目标容量优化配置(Multi-objective optimal sizing method for dis-tributed power of wind-solar-diesel-battery independentmicrogrid based on improved electromagnetism-like mech-anism)[J].电力系统保护与控制(Power System Protec-tion and Control),2016,44(8):63-70.
[15]刘科研,刘永梅,盛万兴,等(Liu Keyan,Liu Yongmei,Sheng Wanxing,et al).考虑电压约束的分布式电源接入配电网最大准入容量计算方法(Maximal allowableDG penetration capacity calculation considering voltageconstraints)[J].电力系统自动化设备(Electric PowerAutomation Equipment),2016,36(6):81-87.
[16]王成山,张楠,赵金利,等(Wang Chengshan,Zhang Nan,Zhao Jinli,et al).考虑波动性的分布式电源最大接入能力计算(Maximum capacity calculation of distributed gen-erators considering fluctuation characteristics)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2016,28(8):38-43.
[17]钟嘉庆,叶治格,卢志刚(Zhong Jiaqing,Ye Zhige,Lu Zh-igang).分布式发电注入容量与接入位置的优化配置分析(Analysis of optimal allocation of penetration level andinterconnected location of DG)[J].电力系统保护与控制(Power System Protection and Control),2012,40(7):50-55.
[18]葛少云,闫常晓,刘洪,等(Ge Shaoyun,Yan Changxiao,Liu Hong,et al).配电网中分布式电源的选址定容问题研究(Optimal locating and sizing of distributed genera-tions in distribution network)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2016,28(2):8-14.
[19]文升,顾洁,程浩忠,等(Wen Sheng,Gu Jie,Cheng Hao-zhong,et al).分布式电源的准入容量与优化布置的实用方法(Maximum penetration level and optimal place-ment of distributed generation)[J].电力自动化设备(Electric Power Automation Equipment),2012,32(10):109-114.
[20]Shih-Chieh H.Effects of mutual coupling and transposi-tion of phase conductors on the maximum photovoltaicpenetration levels in distribution feeders[J].IEEE Transon Power Delivery,2015,30(2):923-930.
[21]Shayani R A,de Oliveira M A G.Photovoltaic generationpenetration limits in radial distribution systems[J].IEEETrans on Power Systems,2011,26(3):1625-1631.
[2]吕华(LüHua).分布式电源对配电网保护影响研究及改进(Distributed Power Grid Impact Study And Improve-ment of Distribution Protection)[D].北京:华北电力大学电气与电子工程学院(Beijing:School of Electrical andElectronic Engineering,North China Electric Power Uni-versity),2014.
[3]Eftekharnejad S,Vittal V,Heydt G T,et al.Impact of in-creased penetration of photovoltaic generation on powersystems[J].IEEE Trans on Power Systems,2013,28(2):893-901.
[4]张曦,张宁,龙飞,等(Zhang Xi,Zhang Ning,Long Fei,et al).分布式电源接入配网对其静态电压稳定性影响多角度研究(Research of the impacts on static voltage sta-bility of distribution networks with distributed generationfrom different aspects)[J].电力系统保护与控制(PowerSystem Protection and Control),2017,45(6):120-125.
[5]周卫,张尧,夏成军,等(Zhou Wei,Zhang Yao,XiaChengjun,et al).分布式发电对配电网继电保护的影响(Effect of distributed generation on relay protection of dis-tributed system)[J].电力系统保护与控制(Power SystemProtection and Control),2010,38(3):1-5,10.
[6]赵珊珊,盛万兴,孟晓丽,等(Zhao Shanshan,ShengWanxing,Meng Xiaoli,et al).Multi-resolution model andmethodology for analyzing the impact of voltage qualityon maximum penetration level of distributed generation[J].中国电机工程学报(Proceedings of the CSEE),2015,35(6):1306-1313.
[7]周辛南,柯德平,孙元章(Zhou Xinnan,Ke Deping,SunYuanzhang).基于配电网静态电压质量机会性约束的可再生能源分布式发电容量规划(DG planning basedon chance constraint of distribution network static voltagequality for renewable energies)[J].电力自动化设备(Electric Power Automation Equipment),2015,35(9):143-149.
[8]刘健,同向前,潘忠美,等(Liu Jian,Tong Xiangqian,Pan Zhongmei,et al).考虑过电压因素时分布式光伏电源的准入容量(The maximum power of distributed PVgeneration according to over-voltage in distribution net-work)[J].电力系统保护与控制(Power System Protec-tion and Control),2014,42(6):45-51.
[9]邹宏亮,韩翔宇,廖清芬,等(Zou Hongliang,HanXiangyu,Liao Qingfen,et al).考虑电压质量与短路容量约束的分布式电源准入容量分析(Penetration capacitycalculation for distributed generation considering voltagequality and short circuit capacity constraints)[J].电网技术(Power System Technology),2016,40(8):2273-2280.
[10]郑涛,贾仕龙,潘玉美,等(Zheng Tao,Jia Shilong,PanYumei,et al).基于配电网原故障定位方案的分布式电源准入容量研究(Research on allowed penetration levelof DGs based on the traditional fault location methods)[J].电网技术(Power System Technology),2014,38(8):2257-2262.
[11]陈晓龙,李永丽,赵曼勇,等(Chen Xiaolong,Li Yongli,Zhao Manyong,et al).计及配电网电流保护整定原则的逆变型分布式电源准入容量计算(IBDG penetrationlevel calculation considering current protection settingprinciple for distribution network)[J].电力自动化设备(Electric Power Automation Equipment),2016,36(6):156-162.
[12]钟清,高新华,余南华,等(Zhong Qing,Gao Xinhua,YuNanhua,et al).谐波约束下的主动配电网分布式电源准入容量与接入方式(Accommodating capacity andmode of distributed generation under harmonic constraintin distribution networks)[J].电力系统自动化(Automa-tion of Electric Power Systems),2014,38(24):108-113.
[13]彭春华,于蓉,孙惠娟(Peng Chunhua,Yu Rong,Sun Hui-juan).基于K-均值聚类多场景时序特性分析的分布式电源多目标规划(Multi-objective DG planning based onK-means clustering and multi-scenario timing characteris-tics analysis)[J].电力自动化设备(Electric Power Auto-mation Equipment),2015,35(10):58-65.
[14]谭颖,吕智林,李捷(Tan Ying,LüZhilin,Li Jie).基于改进ELM的风/光/柴/储独立微网分布式电源多目标容量优化配置(Multi-objective optimal sizing method for dis-tributed power of wind-solar-diesel-battery independentmicrogrid based on improved electromagnetism-like mech-anism)[J].电力系统保护与控制(Power System Protec-tion and Control),2016,44(8):63-70.
[15]刘科研,刘永梅,盛万兴,等(Liu Keyan,Liu Yongmei,Sheng Wanxing,et al).考虑电压约束的分布式电源接入配电网最大准入容量计算方法(Maximal allowableDG penetration capacity calculation considering voltageconstraints)[J].电力系统自动化设备(Electric PowerAutomation Equipment),2016,36(6):81-87.
[16]王成山,张楠,赵金利,等(Wang Chengshan,Zhang Nan,Zhao Jinli,et al).考虑波动性的分布式电源最大接入能力计算(Maximum capacity calculation of distributed gen-erators considering fluctuation characteristics)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2016,28(8):38-43.
[17]钟嘉庆,叶治格,卢志刚(Zhong Jiaqing,Ye Zhige,Lu Zh-igang).分布式发电注入容量与接入位置的优化配置分析(Analysis of optimal allocation of penetration level andinterconnected location of DG)[J].电力系统保护与控制(Power System Protection and Control),2012,40(7):50-55.
[18]葛少云,闫常晓,刘洪,等(Ge Shaoyun,Yan Changxiao,Liu Hong,et al).配电网中分布式电源的选址定容问题研究(Optimal locating and sizing of distributed genera-tions in distribution network)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2016,28(2):8-14.
[19]文升,顾洁,程浩忠,等(Wen Sheng,Gu Jie,Cheng Hao-zhong,et al).分布式电源的准入容量与优化布置的实用方法(Maximum penetration level and optimal place-ment of distributed generation)[J].电力自动化设备(Electric Power Automation Equipment),2012,32(10):109-114.
[20]Shih-Chieh H.Effects of mutual coupling and transposi-tion of phase conductors on the maximum photovoltaicpenetration levels in distribution feeders[J].IEEE Transon Power Delivery,2015,30(2):923-930.
[21]Shayani R A,de Oliveira M A G.Photovoltaic generationpenetration limits in radial distribution systems[J].IEEETrans on Power Systems,2011,26(3):1625-1631.