促进跨区新能源消纳的直流联络线功率优化模型及分析

发布时间：2018-06-13 05:44

本文选题：高压直流输电 + 新能源消纳　；参考：《电力系统自动化》2017年18期

【摘要】：提出了一种考虑直流联络线功率阶梯化运行、送端电网与多个受端电网跨区协调的常规能源与新能源联合优化的发电计划模型。建立了直流联络线功率阶梯化运行的数学模型,该模型满足直流功率调整的各项特性要求,包括直流功率阶梯化、相邻时段不可反向调整、稳定运行持续时间、日交换电量不变等约束,既充分发挥了直流联络线可灵活调节的特点,又避免了高压直流换流设备的频繁转换,提高了直流联络线计划的可执行性。同时,该模型可考虑多个跨区互联电网间的多条输电通道,以及送受端电网间的系统负荷互补性和新能源接纳能力,实现了送受端电网间的协调调度,促进新能源在更大空间范围内消纳。基于国内某跨区互联电网的实际数据,验证了所提模型的有效性。
[Abstract]:In this paper, a new generation planning model is proposed, which takes into account the stepwise operation of DC tie-line power, and the cross-region coordination of the feed-end network and the multi-receiving network, which combines conventional and new energy sources. The mathematical model of stepwise operation of DC tie-line power is established. The model meets the requirements of DC power adjustment, including the stepwise DC power, the unreversible adjustment of adjacent periods, and the steady running duration. The restriction of constant daily exchange quantity not only gives full play to the flexible regulation of DC tie-line but also avoids the frequent conversion of HVDC converter and improves the execution of DC tie-line plan. At the same time, the model can take into account multiple transmission channels among inter-area interconnected power networks, as well as the complementary system load and the new energy acceptance ability between the transmission and receiving power networks, so that the coordinated dispatching between the transmission and receiving power networks can be realized. Promote the absorption of new energy in a larger space. The validity of the proposed model is verified based on the actual data of a cross-region interconnected power network in China.
【作者单位】：南瑞集团公司(国网电力科学研究院);国电南瑞科技股份有限公司;智能电网保护和运行控制国家重点实验室;国网宁夏电力公司;
【基金】：国家电网公司科技项目“考虑多基地和直流外送的新能源消纳调度决策分析和评价方法研究及应用”~~
【分类号】：TM721.1;TM73

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