Optimal capacity planning of solar PV inverters for distribution system with reactive-power transaction

Jian Tang Liao, Chien Hsuan Liu, Hong Tzer Yang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Higher and higher penetration of photovoltaic (PV) system considerably affects the voltage in power distribution systems and restricts the feed-in power of PV generation. To stabilize power distribution system and increase the profits of PV system owners, this paper proposes a dual-loop PV smart inverter (SI) capacity optimization method which collaborates with a distribution-level reactive-power transaction strategy. Due to the high dependency of optimal capacities of SI on their operations, the proposed dual-loop SI capacity optimization method is integrated with a two-stage voltage control strategy. The strategy optimizes the operations of on-load tap changer (OLTC), capacitor bank (C-bank), and reactive-power output of PV SI to minimize line loss and maintain the system voltage within an acceptable range. To verify the feasibility of the proposed PV SI capacity optimization method and voltage control strategy, the practical load and PV generation data are used in this paper. The simulation results show that the proposed method can effectively mitigate the overvoltage problems and increase the feed-in power of the PV system. Besides, the proposed distribution-level reactive-power transaction strategy can improve the benefits of both DSO and PV system owners.

Original languageEnglish
Title of host publication2017 IEEE PES Innovative Smart Grid Technologies Conference Europe, ISGT-Europe 2017 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-6
Number of pages6
ISBN (Electronic)9781538619537
DOIs
Publication statusPublished - 2017 Jul 1
Event2017 IEEE PES Innovative Smart Grid Technologies Conference Europe, ISGT-Europe 2017 - Torino, Italy
Duration: 2017 Sep 262017 Sep 29

Publication series

Name2017 IEEE PES Innovative Smart Grid Technologies Conference Europe, ISGT-Europe 2017 - Proceedings
Volume2018-January

Other

Other2017 IEEE PES Innovative Smart Grid Technologies Conference Europe, ISGT-Europe 2017
CountryItaly
CityTorino
Period17-09-2617-09-29

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All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Computer Networks and Communications

Cite this

Liao, J. T., Liu, C. H., & Yang, H. T. (2017). Optimal capacity planning of solar PV inverters for distribution system with reactive-power transaction. In 2017 IEEE PES Innovative Smart Grid Technologies Conference Europe, ISGT-Europe 2017 - Proceedings (pp. 1-6). (2017 IEEE PES Innovative Smart Grid Technologies Conference Europe, ISGT-Europe 2017 - Proceedings; Vol. 2018-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISGTEurope.2017.8260123