考虑不确定功率注入的安全约束经济调度模型非有效约束识别方法

发布时间：2018-02-16 09:17

本文关键词： 安全约束经济调度非有效约束单纯形体贪婪算法不确定性　出处：《中国电机工程学报》2014年34期 　论文类型：期刊论文

【摘要】：随着电网规模的扩大,数量庞大的安全约束给在线经济调度问题带来了极大的挑战,如何判别并剔除其中的非有效约束成为大电网安全约束经济调度问题研究的新方向。考虑大规模新能源并网给系统带来的不确定性,提出一种可快速有效地识别非有效安全约束的新方法。首先给出不确定情况下非有效安全约束的定义和识别非有效约束的充分必要条件;考虑到判别过程中求解大量线性规划的耗时问题,将原优化模型的可行域进行松弛,根据松弛模型的特殊性,利用连续贪婪算法快速剔除部分非有效约束,再利用充分必要条件进行离线计算,进而识别出其余非有效约束。通过24个时间段的9节点系统和96个时间段的IEEE 118节点系统仿真,验证了所提方法的快速性和有效性。另外,仿真结果页可为调度运行人员提供必要信息,统计出可能产生电力传输阻塞的线路情况。
[Abstract]:With the expansion of power grid security constraints, a large number of poses a great challenge to the on-line economic dispatch problem, how to identify and remove the non effective constraints become a new research direction of security constrained economic dispatch problem of large power grid. Considering the large-scale new energy grid system to bring uncertainty, put forward a fast recognition a new method of non effective security constraints. Firstly, the necessary and sufficient conditions of uncertain non definition and identification of effective security constrained non effective constraints; taking into account the time-consuming problem solving process of linear discriminant planning, the feasible domain of the original optimization model for relaxation, according to the special nature of the relaxation model, using continuous greedy a fast algorithm to eliminate some non effective constraints, and then using the off-line calculation of necessary and sufficient conditions to identify the remaining non effective through 24 time constraints. The simulation results of the 9 node system and 96 time period IEEE 118 node system verify the rapidity and effectiveness of the proposed method. Moreover, the simulation results page can provide necessary information for the dispatching operator, and statistics the transmission lines that may generate power transmission congestion.

【作者单位】：电力系统及发电设备控制和仿真国家重点实验室(清华大学电机系);美国中西部电网独立输电系统运行公司;美国田纳西大学电气工程与计算机科学系;
【基金】：国家重点基础研究发展计划项目(973项目)(2013CB 228203) 国家自然科学基金项目(51277105) 国家杰出青年科学基金(51025725)~~
【分类号】：TM73

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