arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.09131eess.SYcs.SY
收藏

保护隐私的分布式概率潮流算法

Privacy-preserving Distributed Probabilistic Load Flow

Mengshuo Jia, Yi Wang, Chen Shen, Gabriela Hug

摘要:

概率潮流(PLF)允许评估可再生能源对系统运行的不确定性。理想情况下,PLF计算是针对整个电网实施的,要求输电线路和节点负载/发电的所有参数都可用。然而,在多区域互联电网中,跨区域的独立系统运营商(ISO)可能不与其他ISO共享其各自区域的参数。因此,面临的挑战是如何识别区域电网中的流量与跨区域可再生发电源的不确定功率注入之间的函数关系,而无需有关整个电网的完整信息。为了克服这一挑战,我们首先提出了一个隐私保护的分布式加速投影为基础的共识算法为每个ISO计算所需的函数关系的相应的系数矩阵。然后,我们利用隐私保护的加速平均共识算法,让每个ISO获得相同关系的相应常数向量。使用这两个算法,我们最终得出一个隐私保护的分布式PLF方法,每个ISO解析地获得其区域联合PLF在一个完全分布式的方式,而不会透露其参数给其他ISO。通过对IEEE 118节点系统的算例分析,验证了该方法的正确性、有效性和高效性。

英文摘要:

Probabilistic load flow (PLF) allows to evaluate uncertainties introduced by renewable energy sources on system operation. Ideally, the PLF calculation is implemented for an entire grid requiring all the parameters of the transmission lines and node load/generation to be available. However, in a multi-regional interconnected grid, the independent system operators (ISOs) across regions may not share the parameters of their respective areas with other ISOs. Consequently, the challenge is how to identify the functional relationship between the flows in the regional grid and the uncertain power injections of renewable generation sources across regions without full information about the entire grid. To overcome this challenge, we first propose a privacy-preserving distributed accelerated projection-based consensus algorithm for each ISO to calculate the corresponding coefficient matrix of the desired functional relationship. Then, we leverage a privacy-preserving accelerated average consensus algorithm to allow each ISO to obtain the corresponding constant vector of the same relationship. Using the two algorithms, we finally derive a privacy-preserving distributed PLF method for each ISO to analytically obtain its regional joint PLF in a fully distributed manner without revealing its parameters to other ISOs. The correctness, effectiveness, and efficiency of the proposed method are verified through a case study on the IEEE 118-bus system.

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。

↑