Historically, electrical energy storage (EES) systems have played three important roles [1]: (i) they reduce electricity costs by storing electricity obtained during offpeak load at which the electricity price is low, to be used during peak load times instead of buying electricity whose prices then are high; (ii) they are used to improve the reliability of the power supply, whereby EES systems support users when, for example, an electrical network is subjected to disruption due to natural disasters; and (iii) they maintain and improve power quality, frequency, and voltage.

Chapter Contents:

• 10.1 Introduction
• 10.2 Characteristics of energy storage devices/systems
• 10.3 Types and characteristics of EES systems
• 10.3.1 Mechanical storage systems
• 10.3.2 Electrochemical storage systems (batteries)
• 10.3.2.1 Secondary batteries
• 10.3.2.2 Flow batteries
• 10.3.3 Chemical ESS
• 10.3.4 Electrical storage systems
• 10.3.5 Thermal energy storage systems
• 10.4 Benefits of ESSs
• 10.5 Applications of ESSs
• 10.5.1 Electrical network energy storage applications
• 10.5.2 Transport and mobility energy storage applications
• 10.6 Energy storage systems and integration of wind power-based plants
• 10.6.1 Mitigation of power fluctuation
• 10.6.2 Improvement in LVRT capability
• 10.6.2.1 Grid codes requirements for wind power plants to withstand voltage dips
• 10.6.2.2 How an ESS can help improving LVRT capability
• 10.7 Summary
• References

Inspec keywords: energy storage; power supply quality; smart power grids; power system reliability

Other keywords: peak load times; natural disasters; EES systems; electrical energy storage systems; electricity costs; offpeak load; power supply reliability; electricity price; power quality; smart grid; electrical network

Subjects: Power supply quality and harmonics; Other energy storage; Power systems