面向低压配变台区的微电网技术
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摘要
大规模分布式电源、储能和电动汽车等电力电子装置分散接入配电网,致使出现用户侧供电电压频繁双向越限、台区潮流倒送、谐波超标等问题,给配电网供电电能质量、运行经济性和供电可靠性造成了重大影响;本文结合配电网台区实际建设情况,提出了一种面向低压配变台区的新型微电网配置方法,并系统阐述了面向低压配变台区的微电网技术架构、功能架构和控制目标,建立了基于台区微电网两阶段协调控制模型,通过微电网协调控制与优化调度,实现分布式电源优化并网和高效发电。采用典型台区微电网进行了仿真计算,验证了方法和模型的有效性。
Large-scale distributed power supply, energy storage and electric vehicles are distributed into the distribution network, resulting in frequent bidirectional overrun of power supply voltage at the user side, power flow reversal at the station area, harmonic overrun and other issues, which have a significant impact on the power quality, operation economy and reliability of distribution network. A new micro-grid configuration method for low-voltage distribution transformer area is presented. The technical framework, functional framework and control objectives of the micro-grid oriented to lowvoltage distribution transformer area are systematically described. A two-stage coordinated control model based on the micro-grid is established. Through the coordinated control and optimal dispatch of the micro-grid, the optimal grid-connected and efficient generation of distributed generation are realized. The validity of the method and model is validated by the simulation calculation of typical microgrid.
Large-scale distributed power supply, energy storage and electric vehicles are distributed into the distribution network, resulting in frequent bidirectional overrun of power supply voltage at the user side, power flow reversal at the station area, harmonic overrun and other issues, which have a significant impact on the power quality, operation economy and reliability of distribution network. A new micro-grid configuration method for low-voltage distribution transformer area is presented. The technical framework, functional framework and control objectives of the micro-grid oriented to lowvoltage distribution transformer area are systematically described. A two-stage coordinated control model based on the micro-grid is established. Through the coordinated control and optimal dispatch of the micro-grid, the optimal grid-connected and efficient generation of distributed generation are realized. The validity of the method and model is validated by the simulation calculation of typical microgrid.
引文
[1]中华人民共和国国务院.国务院关于促进光伏产业健康发展的若干意见[EB/OL].2013-07-15[2016-08-01].http://www.gov.cn/zwgk.
[2]国家能源局.分布式光伏发电示范区工作方案[EB/OL].国家能源局,2013-06-17[2016-08-01].http://www.nea.gov.cn.
[3]国家能源局,国务院扶贫开发领导小组办公室.关于印发实施光伏扶贫工程工作方案的通知[EB/OL].国家能源局,2014-10-11[2016-08-01].http://zfxxgk.nea.gov.cn.
[4]国家能源局.关于推进分布式光伏发电应用示范区建设的通知[EB/OL].国家能源局,2014-11-21[2016-08-01].http://zfxxgk.nea.gov.cn.
[5]国家电网公司.关于做好分布式电源并网服务工作的意见[EB/OL].国家电网公司,2013-02-27[2016-08-01].http://www.sgcc.com.cn/ztzl.
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[7]盛万兴,吴鸣,季宇,等.分布式可再生能源并网消纳关键技术与工程实践[J].中国电机工程学报,2019,39(8):2175-2186.SHENG Wanxing,WU Ming,JI Yu,et al.Key techniques and engineering practice of distributed renewable generation clusters integration[J].Proceedings of the CSEE,2019,39(8):2175-2186.
[8]寇凌峰,徐毅虎,侯小刚,等.一种大规模分散光伏接入配电网的集群划分方法[J].可再生能源,2019,39(4):525-530.KOU Lingfeng,XU Yihu,HOU Xiaogang,et al.Cluster partition method for large scale distributed photovoltaic in distribution network[J].Renewable Energy Resource,2019,39(4):525-530.
[9]杨新法,苏剑,吕志鹏,等.微电网技术综述[J].中国电机工程学报,2014,34(1):57-70.YANG Xinfa,SU Jian,LV Zhipeng,et al.Overview on micro-grid technology[J].Proceedings of the CSEE,2014,34(1):57-70.
[10]李建林,靳文涛,徐少华,等.用户侧分布式储能系统接入方式及控制策略分析[J].储能科学与技术,2018,7(1):80-89.LI Jianlin,JIN Wentao,XU Shaohua,et al.Analysis of access mode and control strategy of distributed energy storage system on user side[J].Energy Storage Science and Technology,2018,7(1):80-89.
[11]何国庆,刘纯,孙文文,等.GB/T33589-2017《微电网接入电力系统技术规定》解读[J].中国标准化,2018(1):103-106.HE Guoqing,LIU Chun,SUN Wenwen,et al.An interpretation of GB/T33589-2017,technical requirementsfor connecting microgrid to power system[J].China Standardization,2018(1):103-106.
[12]寇凌峰,李洋,吴鸣,等.分布式微电网电压恢复协调控制策略[J].电工电能新技术,2018,37(5):65-72.KOU Lingfeng,LI Yang,WU Ming,et al.Coordinated control strategy for voltage recovery in distributed microgrids[J].Advance Technology of Electrical Engineering and Energy,2018,37(5):65-72.
[2]国家能源局.分布式光伏发电示范区工作方案[EB/OL].国家能源局,2013-06-17[2016-08-01].http://www.nea.gov.cn.
[3]国家能源局,国务院扶贫开发领导小组办公室.关于印发实施光伏扶贫工程工作方案的通知[EB/OL].国家能源局,2014-10-11[2016-08-01].http://zfxxgk.nea.gov.cn.
[4]国家能源局.关于推进分布式光伏发电应用示范区建设的通知[EB/OL].国家能源局,2014-11-21[2016-08-01].http://zfxxgk.nea.gov.cn.
[5]国家电网公司.关于做好分布式电源并网服务工作的意见[EB/OL].国家电网公司,2013-02-27[2016-08-01].http://www.sgcc.com.cn/ztzl.
[6]博伦M H J,哈桑F.分布式发电接入电力系统[M].王政,译.北京:机械工业出版社,2015:2-4.
[7]盛万兴,吴鸣,季宇,等.分布式可再生能源并网消纳关键技术与工程实践[J].中国电机工程学报,2019,39(8):2175-2186.SHENG Wanxing,WU Ming,JI Yu,et al.Key techniques and engineering practice of distributed renewable generation clusters integration[J].Proceedings of the CSEE,2019,39(8):2175-2186.
[8]寇凌峰,徐毅虎,侯小刚,等.一种大规模分散光伏接入配电网的集群划分方法[J].可再生能源,2019,39(4):525-530.KOU Lingfeng,XU Yihu,HOU Xiaogang,et al.Cluster partition method for large scale distributed photovoltaic in distribution network[J].Renewable Energy Resource,2019,39(4):525-530.
[9]杨新法,苏剑,吕志鹏,等.微电网技术综述[J].中国电机工程学报,2014,34(1):57-70.YANG Xinfa,SU Jian,LV Zhipeng,et al.Overview on micro-grid technology[J].Proceedings of the CSEE,2014,34(1):57-70.
[10]李建林,靳文涛,徐少华,等.用户侧分布式储能系统接入方式及控制策略分析[J].储能科学与技术,2018,7(1):80-89.LI Jianlin,JIN Wentao,XU Shaohua,et al.Analysis of access mode and control strategy of distributed energy storage system on user side[J].Energy Storage Science and Technology,2018,7(1):80-89.
[11]何国庆,刘纯,孙文文,等.GB/T33589-2017《微电网接入电力系统技术规定》解读[J].中国标准化,2018(1):103-106.HE Guoqing,LIU Chun,SUN Wenwen,et al.An interpretation of GB/T33589-2017,technical requirementsfor connecting microgrid to power system[J].China Standardization,2018(1):103-106.
[12]寇凌峰,李洋,吴鸣,等.分布式微电网电压恢复协调控制策略[J].电工电能新技术,2018,37(5):65-72.KOU Lingfeng,LI Yang,WU Ming,et al.Coordinated control strategy for voltage recovery in distributed microgrids[J].Advance Technology of Electrical Engineering and Energy,2018,37(5):65-72.