柔性配电网的安全域模型

发布时间：2018-05-10 05:12

本文选题：柔性配电网 + 安全域　；参考：《电网技术》2017年12期

【摘要】：提出了柔性配电网(flexible distribution network,FDN)的安全域模型,并与传统配电网(traditional distribution network,TDN)对比分析。首先,介绍了FDN的概念与特点。其次,分析了FDN正常运行N-0和N-1下的安全约束。再次,提出了FDN的安全域模型以及安全边界方程。最后,通过单联络与多联络电缆网算例验证了本文方法的正确性,对FDN和TDN的N-0域、N-1域以及供电能力进行了对比研究。对比发现:1)FDN能扩大N-0/N-1域,提高正常运行情况下带负载的能力与N-1安全性;2)FDN达到不计及N-1和计及N-1下的最大供电能力工作点相比TDN多很多,使其在实际中更容易实现;3)FDN节点负荷能突破馈线容量限制,具有更大的局部带大负荷能力。同时,通过二维视图观察总结FDN安全域的形状特点及形成机理,并揭示其与柔性闭环特征的内在联系,最终从安全和高效角度分析得出多联络更适合发挥FDN作用的结论。
[Abstract]:The security domain model of flexible distribution network for flexible distribution network is presented, and compared with traditional distribution network (TDN). Firstly, the concept and characteristics of FDN are introduced. Secondly, the security constraints of N-0 and N-1 in normal operation of FDN are analyzed. Thirdly, the security domain model and security boundary equation of FDN are proposed. Finally, the correctness of this method is verified by single and multi-connection cable network examples. The N-0 domain N-1 and power supply capacity of FDN and TDN are compared and studied. It is found that the N-0/N-1 domain can be expanded and the capacity of load under normal operation can be improved by 1: 1 N-0/N-1. Compared with N-1 security, the maximum power supply capacity working point of N-1 and N-1 is much higher than that of N-1, and the maximum power supply capacity of N-1 is not taken into account, and the maximum power supply capacity of N-1 is higher than that of N-1. It makes it easier to realize the load of F3 FDN node in practice. It can break through the limit of feeder capacity and has greater local load capacity. At the same time, the shape characteristics and formation mechanism of FDN security domain are summarized through two-dimensional view observation, and the internal relationship between the FDN and flexible closed-loop features is revealed. Finally, from the perspective of safety and efficiency, the conclusion that multi-connection is more suitable to play the role of FDN is concluded.
【作者单位】：智能电网教育部重点实验室(天津大学);国网北京市电力公司;国网浙江省义乌市供电公司;
【基金】：国家重点研发计划项目(2016YFB0900103) 国家自然科学基金项目(51477112)~~
【分类号】：TM727

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