基于系统灵活性的可再生能源接纳评估

发布时间：2019-07-23 13:05

【摘要】：以电力电量平衡为基本条件的传统机组组合方法,通常足以应对系统中负荷功率的不确定,而对于高比例可再生能源的系统中功率的大幅度随机波动性,这种方法难以满足系统消纳可再生能源的需求,这也使得在开机方式制定过程中率先对系统可再生能源消纳能力进行评估变得尤为重要。从系统运行灵活性的视角出发,首先从功率调节范围角度对系统内各类资源所能提供的灵活性进行定量分析;然后提出了基于系统灵活性充裕度的可再生能源消纳能力评估方法;最后通过具体算例分析验证了所提方法的实用性。此外,针对自备电厂参与功率调节以及储能装置投入运行时的系统消纳能力的提升进行了讨论,并对不同可再生能源预测精度下系统的消纳能力进行了分析。
[Abstract]:The traditional unit combination method with power balance as the basic condition is usually enough to deal with the uncertainty of load power in the system, but for the large random fluctuation of power in the system with high proportion of renewable energy, this method is difficult to meet the needs of the system to absorb renewable energy, which makes it particularly important to take the lead in evaluating the absorption capacity of renewable energy in the process of starting the system. From the point of view of system operation flexibility, the flexibility provided by all kinds of resources in the system is quantitatively analyzed from the point of view of power regulation range, and then an evaluation method of renewable energy absorption capacity based on system flexibility adequacy is proposed. Finally, the practicability of the proposed method is verified by an example. In addition, the system absorption ability of self-provided power plant participating in power regulation and energy storage unit put into operation is discussed, and the absorption capacity of the system under different renewable energy prediction accuracy is analyzed.
【作者单位】：东北电力大学电气工程学院;清华大学电机工程与应用电子技术系;内蒙古电力(集团)有限责任公司;
【基金】：国家科技支撑计划项目(2015BAA01B03) 国家自然科学基金项目(51377002) 国家电网公司科技项目(SGTJ0000KXJS1500072)~~
【分类号】：TM73

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