Smart Grid and Enabling Technologies. Frede Blaabjerg

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Figure 2.31 Barriers to renewable energy technology deployment.

The issues associated with implementing renewable energies can be summarized as shown in Figure 2.31. An economic barrier arises if the cost of a given technology is more than the cost of competing alternatives, even under optimal market conditions, with a direct connection between technological maturity and economic barriers. All other types of barriers are categorized as non‐economic, although these barriers play a vital role in determining the cost of renewables. The importance of the barriers depends on the technology and market, and the priority varies as a technology matures along the direction to commercialization, [9].

A number of renewable energy technologies are present at different stages of maturity, which affects its odds of achieving commercialization, its cost of implementation, or – in the case of many mature technologies – its market cost and the level of subsidies needed to obtain market competitiveness with incumbent energy technologies as indicated in Figure 2.32. Hydropower and bioenergy are major sources of energy globally. Additional options, yet technically proven and available on commercial terms, still hold only a small percentage of their potential markets. Consequently, there are numerous chances to enhance performance and decrease costs [60–62].

2.4 Smart Grid Enable Renewables

Over the past decade, renewable energy technologies have moved into the mainstream of every technology. Annual capacity of RES has been added to 100 GW and exceeds all traditional energies since 2011. Figure 2.33 illustrates a general taxonomy of possible RES challenges. These challenges could be classified into: technical, financial and societal.

Figure 2.32 Maturity of selected renewable energy technologies, Adapted from [9].

Figure 2.33 Common challenges in bulk implementation of RES into the SG [9]. Reproduced with permission from ELSEVIER.

      From figure 2.33 two technical problems are reported:

      1 Governing the energy mix and dealing with uncertainty during operational conditions.

      2 Managing supply and demand during outages and abundances of energy demand.

Currently, existing power systems are not suitable for the bulk integration of the RES. Thus, it is vital to implement advanced technologies to support the stability and reliability of the power system. SG operations take advantage of information and communication technologies to add more flexibility in the energy mix deployment. The flexibility measures are classified into six categories as shown in Figure 2.34. To date, a variety of intelligent tools are proposed to support the integration of RES into the SG. Figure 2.35 proposes different options according to the location where they would be implemented [63, 64].

2.5 Conclusion

After the explanation of the different RES, it should be considered that each source of renewable energy has its ups and downs as summarized by Table 2.3. Moreover, Table 2.4 illustrates some undesirable environmental effects of RES [9].

Figure 2.34 Modern power system flexibility measures.

Figure 2.35 Overview of technical solutions for renewables integration into SG [63].

      As a result of a shortage of inexhaustible resources, and environmental issues due to emissions, conventional energy production predicated upon fossil fuels are considered to be unsustainable in the long term. Therefore, numerous works are invested globally for integration of more renewable energies. RES are advanced options for electrical power generation and their chance to meet the world's energy need. This chapter presents an up‐to‐date and detailed current status and future projection of major renewable energy resources, and their benefits, growth, investment and implementation. To sum up, the deployment of renewable energy is one of the essential elements for a better reliability and resilience of the actual power grid. Moreover, the implementation of RES into SG system will aid in meeting the electrical power demands effectively.

Table 2.3 Advantages and disadvantages of different renewable energy resources. Ref Num [9]. Reproduced with permission from ELSEVIER

Energy source	Advantages	Disadvantages
Bioenergy Energy	Abundant and renewableCan be used to burn waste products	Burning biomass can result in air pollutionMay not be cost effective
Geothermal Energy	Provides an unlimited supply of energyProduces no air or water pollution	Start‐up/development costs can be expensiveMaintenance costs, due to corrosion, can be a problem
Hydropower Energy	Abundant, clean, and safeEasily stored in reservoirsRelatively inexpensive way to produce electricityOffers recreational benefits like boating, fishing, etc.	Can cause the flooding of surrounding communities and landscapesDams have major ecological impacts on local hydrology. Can have a significant environmental СКАЧАТЬ В начало < 34 35 36 37 38 39 40 41 42 > В конец