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新能源基地汇集工程可接纳风电光伏潜力研究
Research on the Acceptable Scale of Wind and Photovoltaic Power in Collection Engineering for New Energy Bases
新能源基地汇集工程一般会接入与汇集容量相等或略小于汇集容量的新能源装机。考虑到新能源出力具有随机性、波动性和间歇性的特点，汇集工程容量全年大部分时间未得到充分利用。从国民经济和新能源合理利用率的角度出发，汇集工程实际可接纳的新能源潜力有待进一步挖掘。以新能源基地汇集工程的度电成本最低为目标，根据风光电站出力特性，考虑电网调峰能力，对新能源基地各电压等级汇集站可接纳新能源潜力进行研究。对华北地区某新能源汇集场景的研究表明：所提方法可在满足新能源利用率要求的前提下多接入约50%的风电光伏装机，并降低新能源基地的整体度电成本；风光互补汇集站相较纯风电/纯光伏汇集站可接入更多的新能源装机。研究结果可为后续新能源基地汇集工程可接纳的新能源潜力提供参考。
The installed new energy capacity of new energy bases is usually equal to or slightly smaller than the capacity of collection engineering. Considering the randomness，fluctuation and intermittency of new energy units’ output，the capacity of collection engineering has not been fully utilized in most of the time. The potential scale of new energy that can be accepted by collection engineering could be further excavated from the perspective of national economy and rational new energy utilization rate. This paper studies reasonable accepted new energy scale of new energy bases in various voltage levels based on optimal levelized cost of electricity considering the characteristics of wind and solar power stations and regulation capability of power grid. The research of collection scene in north China region shows that the new method proposed in this paper can accept 50% larger capacity of wind and photovoltaic power and effectively reduces the levelized cost of electricity for new energy bases while meeting the requirements of new energy utilization rate. In addition，the acceptable new energy capacity of complementary collection stations can be significantly larger than pure wind or photovoltaic collection stations. Research in this paper can provide reference for acceptable new energy potential scale of collection engineering in subsequent new energy bases.
新能源基地 / 汇集工程 / 可接纳规模 / 调峰能力 / 度电成本
new energy bases / collection engineering / acceptable scale / regulation capability / levelized cost of electricity
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