地区电网光伏消纳能力的提升策略
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摘要
针对大规模光伏发电功率倒送造成传输通道发生阻塞的问题,提出一种传输通道潮流评估模型。利用传输通道负载率期望评估传输通道的负载率水平,利用传输通道潮流熵确定传输通道功率波动剧烈程度,在此基础上采用传输通道阻塞二维评定等级值判定传输通道发生阻塞的可能性大小。应用模糊数学的隶属度函数来决策消纳能力提升措施类型,利用逐步扩展法和灵敏度系数法分别指导网络解与非网络解的实施。通过某地区实际电网算例对所提方法的有效性进行了验证。
Aiming at the problem of transmission channel obstruction caused by large-scale photovoltaic power reversal,a power flow evaluation model for transmission channel is proposed.The load rate expectation of transmission channel is adopted to evaluate the load rate level,and the power flow entropy of transmission channel is used to determine the power fluctuation intensity,on this basis,the two-dimensional evaluation level of transmission channel obstruction is adopted to judge the possibility of blocking in the transmission channel.The membership function of fuzzy mathematics is applied to determine the type of accommodation ability promotion measure,and the stepwise expansion method and sensitivity coefficient method are used to guide the implementation of network solution and nonnetwork solution respectively.The validity of the proposed method is verified by an actual power grid in a region.
Aiming at the problem of transmission channel obstruction caused by large-scale photovoltaic power reversal,a power flow evaluation model for transmission channel is proposed.The load rate expectation of transmission channel is adopted to evaluate the load rate level,and the power flow entropy of transmission channel is used to determine the power fluctuation intensity,on this basis,the two-dimensional evaluation level of transmission channel obstruction is adopted to judge the possibility of blocking in the transmission channel.The membership function of fuzzy mathematics is applied to determine the type of accommodation ability promotion measure,and the stepwise expansion method and sensitivity coefficient method are used to guide the implementation of network solution and nonnetwork solution respectively.The validity of the proposed method is verified by an actual power grid in a region.
引文
[1]国家能源局.电力发展“十三五”规划[EB/OL].[2016-11-07].http:∥www.nea.gov.cn.
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[15]MORALES J M,CONEJO A J,PEREZ-RUIZ J.Economic valuation of reserves in power systems with high penetration of wind power[J].IEEE Transactions on Power Systems,2009,24(2):900-910.
[16]江岳文,张艺渊.风火调峰权交易促进风电再次接纳研究[J].电力自动化设备,2017,37(11):14-21.JIANG Yuewen,ZHANG Yiyuan.Peak regulation right trading between wind farm and thermal unit for second accommodation of wind power[J].Electric Power Automation Equipment,2017,37(11):14-21.
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[18]国家发展改革委.关于降低燃煤发电上网电价和一般工商业用电价格的通知[EB/OL].[2015-12-27].http:∥www.ndrc.gov.cn/zwfwzx/zfdj/jggg/201512/t20151230_769630.html.
[2]国家能源局西北监管局.2016年西北区域新能源并网运行情况通报[EB/OL].[2017-01-18].http:∥xbj.nea.gov.cn/website/Aastatic/news-176162.html.
[3]闫占新,刘俊勇,许立雄,等.风能等效转化利用模型及其效益研究[J].电力自动化设备,2017,37(6):48-54.YAN Zhanxin,LIU Junyong,XU Lixiong,et al.Investigation on equivalent conversion-utilization models and corresponding benefits for wind energy[J].Electric Power Automation Equipment,2017,37(6):48-54.
[4]孙盛鹏,刘凤良,薛松.需求侧资源促进可再生能源消纳贡献度综合评价体系[J].电力自动化设备,2015,35(4):77-83.SUN Shengpeng,LIU Fengliang,XUE Song.Comprehensive evaluation system for contribution degree of demandside resources to renewable enemy source integration[J].Electric Power Automation Equipment,2015,35(4):77-83.
[5]李则衡,陈磊,路晓敏,等.基于系统灵活性的可再生能源接纳评估[J].电网技术,2017,41(7):2187-2194.LI Zeheng,CHEN Lei,LU Xiaomin,et al.Assessment of renewable energy accommodation based on system flexibility analysis[J].Power System Technology,2017,41(7):2187-2194.
[6]陈磊,徐飞,王晓,等.储热提升风电消纳能力的实施方式及效果分析[J].中国电机工程学报,2015,35(17):4283-4290.CHEN Lei,XU Fei,WANG Xiao,et al.Implementation and effect of thermal storage in improving wind power accommodation[J].Proceedings of the CSEE,2015,35(17):4283-4290.
[7]王奇伟,姜飞,马瑞,等.基于状态转移的风电并网下线路潮流分析[J].电网技术,2013,37(7):1880-1886.WANG Qiwei,JIANG Fei,MA Rui,et al.Power flow analysis of power grid connected with wind farms based on state transition[J].Power System Technology,2013,37(7):1880-1886.
[8]苏胜皓,宋锐,陈庆芳,等.基于序列运算的含分布式发电配电网潮流分析[J].电力系统保护与控制,2014,42(24):12-17.SU Shenghao,SONG Rui,CHEN Qingfang,et al.Power flow analysis of distribution network containing distributed generation based on sequence operation[J].Power System Protection and Control,2014,42(24):12-17.
[9]彭慧敏,薛禹胜,许剑冰,等.关于输电阻塞及其管理的评述[J].电力系统自动化,2007,31(13):101-107.PENG Huimin,XUE Yusheng,XU Jianbing,et al.A review of transmission congestion management[J].Automation of Electric Power Systems,2007,31(13):101-107.
[10]丁理杰.复杂电网连锁故障大停电分析与预防研究[D].杭州:浙江大学,2008.DING Lijie.Research on analysis and preventive control of cascading blackouts in complex power systems[D].Hangzhou:Zhejiang University,2008.
[11]李勇,刘俊勇,刘晓宇,等.基于潮流熵的电网连锁故障传播元件的脆弱性评估[J].电力系统自动化,2012,36(19):11-16.LI Yong,LIU Junyong,LIU Xiaoyu,et al.Vulnerability assessment of power grid cascading failures based on entropy of power flow[J].Automation of Electric Power Systems,2012,36(19):11-16.
[12]张继国,辛格.信息熵——理论与应用[M].北京:中国水利水电出版社,2012:31-34.
[13]程浩忠.电力系统规划[M].北京:中国电力出版社,2014:127-130.
[14]舒印彪,张智刚,郭剑波,等.新能源消纳关键因素分析及解决措施研究[J].中国电机工程学报,2017,37(1):1-9.SHU Yinbiao,ZHANG Zhigang,GUO Jianbo,et al.Study on key factors and solution of renewable enemy accommodation[J].Proceedings of the CSEE,2017,37(1):1-9.
[15]MORALES J M,CONEJO A J,PEREZ-RUIZ J.Economic valuation of reserves in power systems with high penetration of wind power[J].IEEE Transactions on Power Systems,2009,24(2):900-910.
[16]江岳文,张艺渊.风火调峰权交易促进风电再次接纳研究[J].电力自动化设备,2017,37(11):14-21.JIANG Yuewen,ZHANG Yiyuan.Peak regulation right trading between wind farm and thermal unit for second accommodation of wind power[J].Electric Power Automation Equipment,2017,37(11):14-21.
[17]国家发展改革委.关于调整光伏发电陆上风电标杆上网电价的通知[EB/OL].[2016-12-26].http:∥www.ndrc.gov.cn/gzdt/201612/t20161228_833065.html.
[18]国家发展改革委.关于降低燃煤发电上网电价和一般工商业用电价格的通知[EB/OL].[2015-12-27].http:∥www.ndrc.gov.cn/zwfwzx/zfdj/jggg/201512/t20151230_769630.html.