Abstract
The access layer in the communication network for distribution is an important link in the automation of smart distribution power grid. In current access layer of communication network for distribution in Chinese power grid systems, several communication methods like optical fiber, mediumvoltage carrier communication, 1.8GHz TD-LTE power private wireless network, 230MHz TD-LTE power private wireless network, public wireless network are constructed concurrently and running simultaneously in an identical power supply area. This traditional networking model will cause repeated construction and operation and maintenance difficulties in the communication network of power grid. On the basis of giving a detailed analysis of the radio link budget of TD-LTE power private wireless network in two frequencies, this paper present a multi-communication methods hybrid networking model, which gives a clear boundary for different communication methods based on the isoline with equal signal strength of the TD-LTE power private wireless network and accomplish the optimization of communication resources for distribution.
Highlights
The access layer in the communication network for distribution showed in Figure 1. is used in gather the data flow in the distribution automation equipment such as DTU(Distribution Terminal Unit) and FTU(Feeder Terminal Unit) and send it to the backbone layer in the communication network
Radio link budget is required before giving a clear boundary for wire communication and wireless communication. 1.8GHz TD-LTE power private wireless network and 230MHz TD-LTE power private wireless network is two mainstream technologies and different algorithms should be used in the radio link budget
The Okumuram- Hata model[2] is used in the radio link budget of 230MHz TD-LTE power private wireless network
Summary
The access layer in the communication network for distribution showed in Figure 1. is used in gather the data flow in the distribution automation equipment such as DTU(Distribution Terminal Unit) and FTU(Feeder Terminal Unit) and send it to the backbone layer in the communication network. In current access layer of communication network for distribution in Chinese power grid systems, several communication methods like optical fiber(industrial switch or EPON), medium-voltage carrier communication, 1.8GHz TD-LTE power private wireless network, 230MHz TD-LTE power private wireless network, public wireless network[1] are constructed concurrently and running simultaneously in an identical power supply area. This traditional networking model will cause repeated construction and operation and maintenance difficulties in the communication network of power grid. The research of a new networking model is very necessary to solve these problems
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