Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE credits
The next generation electric power system, known as Smart Grid, is expected to alleviate
the energy shortage problem by exploiting renewable energy resources. The Smart
Grid communication network, with its diverse structure, constitutes an indispensable component in the new power system. In terms of power industry standards, the International
Electrotechnical Commission (IEC) 61850 framework is of particular note. Originally
defined to cover the stringent requirements for automation within the substation, IEC
61850 is proving to be a versatile standard that can also be applied to the medium- and
low-voltage networks while facilitating control applications. Long Term Evolution (LTE)
appears as a remarkable candidate for supporting remote automation tasks in the electricity
grid, offering low latency, high throughput and quality of service differentiation in
a single radio access technology. In the context of the thesis, a performance evaluation
of the integration of LTE technology with IEC 61850 communication services is carried
out. A characterization of the network architecture and the performance requirements
for intelligent power system management is performed and an analytical model for the
scheduling framework is proposed. Emphasis is given on the development of optimal prioritization
schemes and techniques in order to ensure control data scheduling in situations
when LTE background traffic coexists in the network. In addition, realistic communication
scenarios specifically designed to emulate real network operations are considered
and extensive simulations are performed with the use of Ericsson’s radio system simulator
platform. The results have demonstrated that LTE networks successfully meet the
performance requirements for wide-area automation tasks within a Smart Grid context.
Given the size of the LTE ecosystem, such an evolution constitutes an attractive path for
future wireless communication.
2014. , 75 p.