Chapter 1 Introduction
Recently, wind power has gained greater attention with respect to sources of renewable energy due to the maturity of the technology and its relative cost competitiveness. Wind power farms (WPFs) are scattered in remote areas (onshore and offshore) selected by the wind speed, water depth, and distance to shore. It is important to develop technology to monitor WPFs with higher capacities as the size and number of wind turbines in a WPF is continuously increasing. In order to provide real-time control and monitoring, reliable bi-directional communication infrastructure is needed. According to their needs, most turbine manufacturers have developed their own ...view middle of the document...
However, the requirements for different applications should be satisfied in order to guarantee that the new network configuration is acceptable for use.
1.2 Scope of the work
The dissertation is divided into three main parts. In the first part, we proposed the hierarchical communication network architectures that consist of a turbine area network (TAN), farm area network (FAN), and control area network (CAN) for WPFs. The wind turbines are modelled based on the logical nodes (LN) concepts of the IEC 61400-25 standard. The WPF communication network is configured with a switch-based architecture where each wind turbine has a dedicated link to the wind farm main switch. Servers at the control center are used to store and process the data received from the WPF. The network architecture is modelled and evaluated via OPNET. We investigated the end-to-end (ETE) delay for different WPF applications, and our network architecture is validated by analyzing the simulation results.
In order to meet the growing demand of large-scale WPFs, integration of high reliability, high speed, cost effectiveness and secure communication networks are needed. In the second part of this dissertation, we proposed the Ethernet passive optical network (EPON) as one of promising candidates for next generation WPF. Critical communication network characteristics such as reliability, mean downtime, optical power budget, path loss and network cost are evaluated and compared with conventional switched-based architectures for five different architectures. Based on ITU-T, three different protection schemes (feeder fiber protection, distributed fiber protection and full protection) are configured, explained and discussed. The results show that our proposed EPON-based network architectures are superior to conventional switch-based architectures.
Finally, the dissertation provides an insight view into the future smart-wind power farm (S-WPF). Wind turbines are still blind machines because the control center is responsible for managing and controlling individual wind turbines that are turned on or off according to demand for electricity. We propose a communication network architecture for Smart-WPFs. The proposed architecture is designed for...