Reliability and power quality

Reliability and power quality

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This chapter aims to present different aspects of reliability and power quality in microgrids from a perspective of its interconnection with a larger system, such a smart grid or a centralised power system. After definitions and key concepts are presented, a case study is included in order to highlight how vulnerable a microgrid can be under disturbances, and the important role of control and storage systems to keep the grid stable and working properly.

Chapter Contents:

  • 5.1 Introduction
  • 5.1.1 Overview
  • 5.1.2 Chapter's aim and scope
  • 5.2 Power quality
  • 5.2.1 What is power quality?
  • 5.2.2 Why power quality is important?
  • 5.2.3 Smart grids and power-quality issues
  • 5.2.4 The concept of virtual generator in microgrids
  • Research in the literature
  • Virtual inertia principle
  • Comparison
  • Discussion
  • 5.3 Reliability
  • 5.3.1 What is reliability?
  • 5.3.2 Interoperability
  • 5.3.3 Cybersecurity
  • 5.3.4 Flexible operation and self-healing
  • 5.3.5 Demand response
  • 5.3.6 Smart grids and microgrid standards
  • 5.4 Case study
  • 5.4.1 Introduction
  • 5.4.2 Study system
  • Location
  • Transmission network
  • Renewable generation
  • Storage systems
  • 5.4.3 Control strategy
  • Normal condition
  • Abnormal condition
  • 5.4.4 Scenario construction
  • 5.4.5 Simulation results
  • Scenario 1: Target system connected to the local utility
  • Scenario 2: Target system isolated from the local utility
  • Scenario 3: Primary frequency support by WTs
  • 5.4.6 Conclusion
  • References

Inspec keywords: power supply quality; power generation reliability; distributed power generation; power distribution control; power generation control; power distribution protection

Other keywords: centralised power system; control systems; storage systems; microgrid disturbances; microgrid reliability; smart grid; power quality

Subjects: Power system control; Control of electric power systems; Distributed power generation; Reliability; Power supply quality and harmonics

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