摘要
全清洁能源特高压青豫直流工程顺利投产初期,由于配套电源尚未全部投运,青海水电峰枯季节出力差异较大,新能源出力随机性、间歇性和波动性问题突出,仅依托青海难以满足直流大功率稳定输电要求。在深入分析青豫直流送端青海电网的负荷特性和发电特性的基础上,开展青豫直流外送电力平衡分析,针对存在的峰盈谷缺和汛富枯贫问题,提出发挥西北电网整体合力,实现西北多省份清洁能源打捆外送的模式,在新能源大发、新能源小发、黄河丰水期、黄河枯水期4种场景下开展模拟测算,结果表明,通过清洁能源打捆外送可有效提升特高压青豫直流稳定外送水平。
At present,the Qing(Qinghai)-Yu(Henan)UHV DC Project for all-clean energy transmission has been put into operation,but the supporting power sources have not been fully put into production yet.Due to the big output difference of hydropower between flood and dry seasons,and the stochastic,intermittent and fluctuating characteristics of wind and photovoltaic power output,it is hard to meet the requirements for large-power and stable transmission of Qing-Yu UHV DC Project by Qinghai Grid alone.Based on an investigation of the load and generation characteristics of the sending-end Qinghai Grid,a power balance analysis is carried out for the outbound transmission of the Qing-Yu DC Project.Aiming at the problems of surplus in peak time while shortage in valley time,and rich in flood season while poor in dry season for power output in the Qinghai Grid,the paper proposes a bundled clean energy transaction model for multiple provinces in the northwest region,so as to give a full play of the overall dispatching role of the Northwest Power Grid.Simulations are carried out under four scenarios,including the new energy enrichment and barren periods,the flood season and the dry season of the Yellow River.The results show that the bundled transaction of clean energy can significantly improve the stable outbound transmission level of the Qing-Yu UHV DC Project.
作者
贺元康
刘瑞丰
陈天恩
别朝红
HE Yuankang;LIU Ruifeng;CHEN Tian'en;BIE Zhaohong(Northwest China Branch of State Grid Corporation of China,Xi'an 710048,China;School of Electrical Engineering,Xi'an Jiaotong University,Xi'an 710049,China)
出处
《中国电力》
CSCD
北大核心
2021年第7期83-92,共10页
Electric Power
基金
国家重点研发计划资助项目(2016YFB0901900)
国家自然科学基金资助项目(51977166)
国家电网有限公司管理咨询项目(SGNW0000DKWT2000176)
国家电网有限公司科技项目(SGNW0000DKJS2000167)。
关键词
打捆交易
全清洁能源
曲线匹配
电力平衡
bundled transaction
all-clean energy
curve matching
power balance
作者简介
贺元康(1983-),男,博士研究生,高级工程师,从事电力市场、电力系统运行与控制研究,E-mail:jacbob1890@163.com;刘瑞丰(1979-),男,硕士,高级工程师,从事电力市场体系建设、省间电力交易和新能源高占比电力系统运行优化等研究和管理工作,E-mail:liurf@nw.sgcc.com.cn;陈天恩(1963-),男,硕士,正高级经济师,从事电力市场、电力交易、电力营销研究,E-mail:chente@nw.sgcc.com.cn;别朝红(1970-),女,教授,博士生导师,从事电力系统规划与可靠性、弹性电力系统、能源互联网研究,E-mail:zhbie@mail.xjtu.edu.cn。
