基于潮流计算的配电网最大供电能力模型

发布时间：2018-04-02 02:05

本文选题：配电网　切入点：最大供电能力　出处：《中国电机工程学报》2014年31期

【摘要】：现有文献计算配电网最大供电能力(total supply capability,TSC)的方法均未计及线路潮流引起的电压降落和网络损耗,其结果准确性应用于实际运行还存在一定难度。为解决这一基础性问题,首先提出基于潮流计算的TSC模型,精确计及了电压降落和网络损耗。该模型基于馈线间互联关系建立,其计算结果能精确到馈线负荷,同时考虑了主变N-1故障和馈线N-1故障。其次,针对该含有迭代的非线性规划模型,提出一种基于前推回推的迭代和广义梯度法的求解方法。最后,通过算例对比所提方法与现有文献方法,并利用N-1安全校验仿真来验证。结果表明,所得TSC结果更为准确,为TSC理论的应用从规划向运行提供了参考。
[Abstract]:The existing methods for calculating the maximum power supply capacity of distribution network, total supply capability, do not take into account the voltage drop and network losses caused by line power flow, and it is difficult to apply the accuracy of the results to actual operation.In order to solve this fundamental problem, a TSC model based on power flow calculation is proposed, which accurately takes into account voltage drop and network loss.The model is based on the interconnection between feeders. The calculation results are accurate to the feed load, and the main transformer N-1 fault and the feeder N-1 fault are taken into account at the same time.Secondly, for the nonlinear programming model with iteration, an iterative and generalized gradient method is proposed.Finally, the proposed method is compared with the existing methods by an example, and the N-1 security verification simulation is used to verify it.The results show that the obtained TSC results are more accurate and provide a reference for the application of TSC theory from programming to operation.
【作者单位】：智能电网教育部重点实验室(天津大学);
【基金】：国家自然科学基金项目(51277129) 国家863高技术基金项目(2011AA05A117) 教育部新世纪优秀人才支持计划(NCET-10-0624)~~
【分类号】：TM744

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