Coverage and connectivity based lifetime maximization with topology update for WSN in smart grid applications

In optical fiber composite overhead ground wire (OPGW) networks, the current monitoring is mainly through installing electronic sensors on the cable and manually monitoring the video on the cable, where the interference plays an important role in the communication and monitoring based systems. In essence, the interference arises from aggressive frequency reuse, especially in the frequency-limited Internet of Things (IoT) networks. The existence of interference causes a negative effect on the system performance of communication systems and IoT networks including the OPGW networks. Hence, this article investigates the communication technology of OPGW line in distribution network under interference environment, where there is one primary link, one secondary link, and one legitimate monitor listening to the secondary link. The secondary user needs to transmit its message to the secondary receiver under the interference power constrained by the primary node. We firstly define the outage probability of legitimate monitoring based on the data rate, and then analyze the system performance by theoretically deriving a closed-form expression of the outage probability for the OPGW communication under interference environment. Simulation results are finally demonstrated to verify the correctness of the closed-form expression for the OPGW communication under interference environment, and show that the interference has a negative impact on the OPGW communication performance.

Section: Introductionmentioning

confidence: 99%

Research on Communication Technology of OPGW Line in Distribution Network under Interference Environment

Huang

Zhang

et al. 2023

“…Promoted by the rapid development of wireless communication technology [1][2][3] and edge computing [4][5][6] as well as electronic technology and computer network technology, the 10kV overhead line has been enhanced by improving fault alarm data, real-time operational data, equipment parameters and other information integrated processing and integration. The characteristics of the collected data can be sent to the detection and control center, for the normal operation of power distribution network monitoring, the monitoring and fault localization [7,8]. Through the implementation of this system, the modernization of power distribution network operation and management is realized, and the safety, reliability and economic operation of power distribution network are ensured.…”

Section: Introductionmentioning

confidence: 99%

Intelligent Wireless Monitoring Technology for 10kV Overhead lines in Smart Grid Networks

Shi

Liu

2022

Promoted by the rapid development of information technology, 10kV overhead line has been widely used in the majority of cities, and it is of great significance to monitor the distribution network effectively, in order to ensure the normal operation of the system. Most of traditional distribution network monitoring methods are based on manual work, which causes inconvenience to the distribution network fault location, repair, maintenance and real-time monitoring, and reduces the efficiency of the distribution network emergency repair and the reliability of power supply. Aiming at the automatic monitoring problem of 10kV overhead network, this paper adopts an intelligent wireless monitoring technology, where a monitoring node is employed to monitor the network transmission status through wireless links. We evaluate the system monitoring performance by using the metric of outage probability, depending on the wireless data rate over wireless channels. For the considered system, we derive analytical outage probability, in order to measure the system performance in the whole range of signal-to-noise ratio (SNR). The simulation results are finally presented to verify the analytical expressions on the system monitoring outage probability in this paper.

“…Transformer is a common electrical equipment, which can realize the conversion of AC energy. The transformer can convert one kind of electric energy (AC current and AC voltage) into another kind of electric energy (AC current and AC voltage with the same frequency) [1][2][3]. The function of transformer in practical application is mainly to complete the voltage conversion and make the transmission of electric energy more convenient.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Design of Power System Transformer Standard Based on Knowledge Graph

Zhou

Lin

et al. 2022

The transformer can convert one kind of electric energy such as AC current and AC voltage into another kind of electric energy with the same frequency. Knowledge graph (KG) can describe various entities and concepts in the real world and their relationships, and it can be considered as a semantic network for power system transformer. Hence, it is of vital importance to analyze and design the power system transformer standard based on the knowledge graph. To this end, we firstly examine the power system transformer with one KG node and one eavesdropper E, where the eavesdropper E can overhear the network from the source, which may cause physical-layer secure issue and an outage probability event. To deal with the issue, we analyze and design the system secure performance under the eavesdropper and define the outage probability for system security, by providing analytical expression of outage probability. We further investigate the power system transformer with multiple KG nodes which can help strengthen the system security and reliability. For such a system, we analyze and design the system secure performance under the eavesdropper and define the outage probability for system security, by providing analytical expression of outage probability. Finally, we give some simulations to analyze the impact of secure transformer standard on the power system, and verify the accuracy of our proposed analytical expression for the the power system transformer standard based on the knowledge graph.