Application of Smart Grid Communication Service Flow Modeling Based on Poisson Model in Grid Operation

Application of Smart Grid Communication Service Flow Modeling Based on Poisson Model in Grid Operation

Xiaojing Cao, Longxing Jin, Fuquan Huang, Zijun Liu, Rongkun Xiu
Copyright: © 2022 |Pages: 12
DOI: 10.4018/JCIT.302243
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Abstract

The early Poisson distribution and Markov autoregressive models can no longer reflect the characteristics of smart grid business flow. The long correlation characteristics of burst flow are simulated by the heavy tail ON/OFF model with multi-source convergence, while the Poisson model with short correlation and no memory is used for random flow. The simulation results show that the synthesized flow is still has a certain statistical self-similarity, and the coefficient H decreases after synthesis.That the long correlation and burst of self-similar business flows will not be smoothed by the convergence and synthesis of the self-similar business flows with short correlation services. In the actual operation process, the station-level power grid will result in load aggravation and significantly affect the network performance when it acts in response to faults. Therefore, it is necessary to consider the changes of network performance under different burst degrees.
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2. Analysis Of Service Behavior Of Smart Grid Station Level Network

The main business data transmitted during the operation of the station level network can be divided into three categories: periodic, sudden, and random (Yang T., Hou Y. C. & Zhao L. Y., 2020; Hao W. J., Yang Q., & Li W., 2019; Liu E. W., 2010), as shown in Table 1.

Periodic messages such as monitoring host polling message, intelligent electronic device (IED) periodic upload or passive transmission to the station control layer switch message, such message transmission real-time requirements are high.

Table 1.
Characteristics of station-level network message classification
TypeSource nodeTarget nodeCommunication behaviorByte
Periodic message, high real-time requirementsIEDStation level equipmentPeriodic timing message actively uploaded by IED, switch message passively transmitted to station control layer446
Burst messages require high real-time performanceIEDor station level equipmentIEDor station level equipmentProtection action, event report, control command, displacement information, file transmission and other unexpected irregular messages190
Random messageIEDor station level equipmentIEDor station level equipmentTrip command, customization, recording, event recording, document, etc. sent between monitoring equipment and IED512k

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