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arXiv 2002.01787eess.SYcs.SY
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基于谐波同步相量测量的配电网拓扑辨识

Topology Identification in Distribution Networks using Harmonic Synchrophasor Measurements

Lei Chen, Mohammad Farajollahi, Mahdi Ghamkhari, Wei Zhao, Songling Huang, Hamed Mohsenian-Rad

摘要:

由于测量资源有限,因此不可避免地需要使用往往不准确的伪测量,配电网中的拓扑识别(TI)是一项具有挑战性的任务。为了解决这个问题,本文提出了一种新的方法,将谐波同步相量的TI问题,以提高TI的精度在配电网。在该方法中,拓扑识别是基于基波同步相量测量和谐波同步相量测量联合进行的。这是通过公式化然后求解混合整数线性规划(MILP)问题来完成的。此外,提供了一个分析,以捕获的数量和位置的谐波源和传感器,需要确保充分的可观测性。建议的TI计划的好处相比,传统的计划,只利用基本的测量。最后,通过对IEEE 33节点电力系统的仿真,验证了该方法的正确性。

英文摘要:

Topology identification (TI) in distribution networks is a challenging task due to the limited measurement resources and therefore the inevitable need to use pseudo-measurements that are often inaccurate. To address this issue, a new method is proposed in this paper to integrate harmonic synchrophasors into the TI problem in order to enhance TI accuracy in distribution networks. In this method, topology identification is done jointly based on both fundamental synchrophasor measurements and harmonic synchrophasor measurements. This is done by formulating and then solving a mixed-integer linear programming (MILP) problem. Furthermore, an analysis is provided to capture the number of and the location of harmonic sources and sensors that are needed to ensure full observability. The benefits of the proposed TI scheme are compared against those of the traditional scheme that utilizes only the fundamental measurements. Finally, through numerical simulations on the IEEE 33-Bus power system, it is shown that the proposed scheme is considerably accurate compared to the traditional scheme in topology identification.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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