Impact of Communication Latency on the Bus Voltage of Centrally Controlled DC Microgrids During Islanding
Impact of Communication Latency on the Bus Voltage of Centrally Controlled DC Microgrids During Islanding
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DOI：
10.1109/tste.2018.2873699
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发表时间：
2019-10
影响因子：
8.8
通讯作者：
Mahmoud Saleh;Yusef Esa;A. Mohamed
中科院分区：
文献类型：
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作者：
Mahmoud Saleh;Yusef Esa;A. Mohamed
在停电期间，可再生能源微电网（MG）能否维持可持续可靠的能源供应，直接关系到母线电压的变化。例如，电压变化可能触发保护装置并断开MG内的der。ccmg （central controlled mg）的类型取决于通信。因此，分析通信网络性能下降（如时延）对ccmg总线电压的影响是非常重要的。本文研究了无线通信技术时延对直流ccmg总线电压和性能的影响以及如何减小时延的影响。开发了两个数学模型来描述和预测MGs在延迟期间的行为。以可再生能源直流自动控制系统及其集中控制方案为例，对所建立的数学模型进行了仿真验证和比较。结果验证了所开发模型的准确性，并表明根据设计和延迟发生前MG的运行条件，影响可能会很严重。
Maintaining a sustainable and reliable source of energy to supply critical loads within a renewable energy-based microgrid (MG) during blackouts is directly related to its bus voltage variations. For example, voltage variation might trigger protection devices and disconnect DERs within the MG. Centrally controlled MGs (CCMGs) type is dependent on communication. Therefore, it is very important to analyze the impact of communication networks performance degradation, such as latency, on the bus voltage of CCMGs. This paper investigates the effect of wireless communication technologies latency on the bus voltage and performance of DC CCMGs and how to mitigate it. Two mathematical models were developed to describe and predict the behavior of MGs during latency. As a case study, a renewable energy-based DC MG with its centralized control scheme was simulated to validate and compare the developed mathematical models. Results verify the accuracy of the developed models and show that the impact may be severe depending on the design, and the operational condition of the MG before latency occurs.