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Future trends in power quality

Future trends in power quality

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The chapter presents a review of power quality issues, measurements, monitoring, performance indices, impacts and standards associated with established PQ indices, impacts, emerging limitations and PQ future trends and challenges. The case study presented at the chapter-end presents three new designs of FACTS-based low-cost switched filter compensation devices acting as dynamic Modulated/PWM switched filters to reduce power quality THD of voltages and currents at point of common coupling. The three FACTS devices include hybrid switched power filter, switched/ MPFC and series-shunt FACTS switched power filter. The chapter is intended as a short guide and a review of power quality issues, limitations and emerging challenges due to the increasing use of renewable Energy AC-DC FACTS devices and compensating systems, mushrooming use of non-linear loads and new smart metering and interface issues with the smart grid.

Chapter Contents:

  • 12.1 Introduction
  • 12.2 Contracts of PQ in a reconfigured electric power industry
  • 12.3 Emerging power quality measurements
  • 12.4 Power quality: impacts, harmonics estimation and mitigation
  • 12.5 Power quality indices and standards
  • 12.6 Power quality and smart grid
  • 12.7 Power quality trends and future requirements
  • 12.8 Case studies
  • 12.8.1 The hybrid FACTS SPFC-filter compensator
  • 12.8.2 FACTS-MPFC Modulated power filter compensator scheme I
  • 12.8.3 FACTS-MPFC switched power filter compensator scheme II
  • 12.8.4 Modulated/switched series-shunt power filter compensator scheme III
  • 12.9 Conclusions
  • Appendix
  • References

Inspec keywords: smart meters; AC-DC power convertors; power harmonic filters; harmonic distortion; smart power grids; switched filters; flexible AC transmission systems; power supply quality

Other keywords: point of common coupling; power quality; smart metering; nonlinear loads; smart grid; compensating systems; renewable energy AC-DC FACTS devices; hybrid switched power filter; total harmonic distortion; FACTS-based low-cost switched filter compensation devices; dynamic modulated-PWM switched filters; series-shunt FACTS switched power filter

Subjects: a.c. transmission; Power supply quality and harmonics; Power system measurement and metering; Power electronics, supply and supervisory circuits; Power system management, operation and economics

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