Research on Application of Wireless Bridge Technology in the Smart Grid

Research on Application of Wireless Bridge Technology in the Smart Grid

Zou Ying (Beijing Guodiantong Network Technology Co., Ltd., Beijing, China), Wang Si-ning (Beijing Guodiantong Network Technology Co., Ltd., Beijing, China), Du Chang-yu (Beijing Guodiantong Network Technology Co., Ltd., Beijing, China) and Jiang Yuan-kun (Beijing Guodiantong Network Technology Co., Ltd., Beijing, China)
DOI: 10.4018/IJISSCM.2018010104
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Abstract

The construction of smart grid, in the meet of communication network core layer must have the strong bearing capacity and the strong network frame, also requires the access layer have the wide variety and flexible edge access ability. In this article, in accordance with the technical features of the smart grid communication network, combined with the Global Energy Interconnection to the requirement of all kinds of communication. The wireless bridge system based on the IEEE 802.11 series protocol as flexible edge access is applied to the smart grid communications, to forward the power wireless bridge structure design and the bridge monitoring management platform design and safety protection design. The use of a wireless bridge will increase the transmission quality of signal, distance and the safety of the transmission. In this article, the wireless bridge in the application of the smart grid electric power communication network has a role in promoting, has a guiding significance to the construction of the smart grid communication.
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Introduction

Wireless bridge is wireless network bridge, which uses wireless transmission to achieve in two or more networks to build the bridge of communication (Tian, 2013; Zou, 2010), the communication technology abiding by the WLAN 802.11b / a / g / n Protocol.

In the process of building smart grid, the WLAN networking sometimes encounters sites with no fiber transmission resources. The user data after through the AP (Access Point) cannot converge to the backbone network, now we can use wireless bridge technology to bridge optical fiber resource site and the site optical fiber unable to reach, in order to enhance the smart grid edge access capability (Zou, Wang, Wang & Wang, 2016). Currently wireless bridge used in the industries such as Transport, Government, Military, Petro China, Police etc.

Wireless bridge uses the IEEE 802.11 series protocol, wireless bridge technology experienced 802.11b, 802.11g, 802.11a, until now 802.11n (Zhang, Xiao & Yan, 2011). 802.11b can usually provide 4Mbps to 6Mbps of actual data rate, and 802.11g, 802.11a standard wireless bridge has 54Mbps transmission bandwidth, the majority of 802.11n wireless bridge can reach 150Mbps or more transmission rate, as shown in Table 1.

Table 1.
Using different standards corresponding to the transmission rate
IEEE
802.11a
IEEE
802.11b
IEEE
802.11g
IEEE
802.11n
Transmission rate54 Mbps11 Mbps54 Mbps600 Mbps
Frequency Range5G2.4G2.4G2.4G & 5G

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