Improved coordinated control strategy for hybrid STATCOM using required reactive power estimation method

Sungyoon Song; Sungchul Hwang; Gilsoo Jang; Minhan Yoon

doi:10.1109/ACCESS.2019.2924296

Improved coordinated control strategy for hybrid STATCOM using required reactive power estimation method

Sungyoon Song
, Sungchul Hwang
, Gilsoo Jang
, Minhan Yoon^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

The penetration level of renewable energy resources has grown in such a way that their effects on the power system can no longer be neglected. In order to cope with these problems, grid operators are forced to improve the stability of the grid connection point, and the static synchronous compensator (STATCOM), which has a fast dynamic response is emerging as an alternative. Due to the prohibitive cost of STATCOM, however, grid operators have begun applying a new concept of hybrid STATCOM, which is a combination of mechanically switched capacitors (MSCs) and STATCOM. Thus, this paper investigates the use of new coordinated control between STATCOM and MSCs, and the solution relies on the required reactive power estimation method using online grid strength level (OGSL) index, which is newly proposed in this paper, and the optimal MSCs allocation algorithm. Following the proposed procedure, an improved coordinated control scheme is obtained whose objective is to reduce the switching times of the MSCs while maximizing the reserve reactive power margin of the STATCOM in transient state. This proposal is analyzed on the Jeju island power system in South Korea with the developed hybrid STATCOM model.

Original language	English
Article number	8743415
Pages (from-to)	84506-84515
Number of pages	10
Journal	IEEE Access
Volume	7
DOIs	https://doi.org/10.1109/ACCESS.2019.2924296
Publication status	Published - 2019

Bibliographical note

Funding Information:
This work was supported in part by the ‘‘Human Resources Program in Energy Technology’’ of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), through the Ministry of Trade, Industry and Energy, South Korea, under Grant 20174030201540, and in part by the KERI Primary Research Program of MSIT/NST under Grant 18-11-N0103-08 and Grant 18-12-N0103-08.

Publisher Copyright:
© 2013 IEEE.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Hybrid STATCOM
MSCs
coordinated control
online grid strength estimation

ASJC Scopus subject areas

General Computer Science
General Materials Science
General Engineering

Access to Document

10.1109/ACCESS.2019.2924296

Cite this

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title = "Improved coordinated control strategy for hybrid STATCOM using required reactive power estimation method",

abstract = "The penetration level of renewable energy resources has grown in such a way that their effects on the power system can no longer be neglected. In order to cope with these problems, grid operators are forced to improve the stability of the grid connection point, and the static synchronous compensator (STATCOM), which has a fast dynamic response is emerging as an alternative. Due to the prohibitive cost of STATCOM, however, grid operators have begun applying a new concept of hybrid STATCOM, which is a combination of mechanically switched capacitors (MSCs) and STATCOM. Thus, this paper investigates the use of new coordinated control between STATCOM and MSCs, and the solution relies on the required reactive power estimation method using online grid strength level (OGSL) index, which is newly proposed in this paper, and the optimal MSCs allocation algorithm. Following the proposed procedure, an improved coordinated control scheme is obtained whose objective is to reduce the switching times of the MSCs while maximizing the reserve reactive power margin of the STATCOM in transient state. This proposal is analyzed on the Jeju island power system in South Korea with the developed hybrid STATCOM model.",

keywords = "Hybrid STATCOM, MSCs, coordinated control, online grid strength estimation",

author = "Sungyoon Song and Sungchul Hwang and Gilsoo Jang and Minhan Yoon",

note = "Funding Information: This work was supported in part by the {\textquoteleft}{\textquoteleft}Human Resources Program in Energy Technology{\textquoteright}{\textquoteright} of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), through the Ministry of Trade, Industry and Energy, South Korea, under Grant 20174030201540, and in part by the KERI Primary Research Program of MSIT/NST under Grant 18-11-N0103-08 and Grant 18-12-N0103-08. Publisher Copyright: {\textcopyright} 2013 IEEE.",

year = "2019",

doi = "10.1109/ACCESS.2019.2924296",

language = "English",

volume = "7",

pages = "84506--84515",

journal = "IEEE Access",

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N1 - Funding Information: This work was supported in part by the ‘‘Human Resources Program in Energy Technology’’ of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), through the Ministry of Trade, Industry and Energy, South Korea, under Grant 20174030201540, and in part by the KERI Primary Research Program of MSIT/NST under Grant 18-11-N0103-08 and Grant 18-12-N0103-08. Publisher Copyright: © 2013 IEEE.

PY - 2019

Y1 - 2019

N2 - The penetration level of renewable energy resources has grown in such a way that their effects on the power system can no longer be neglected. In order to cope with these problems, grid operators are forced to improve the stability of the grid connection point, and the static synchronous compensator (STATCOM), which has a fast dynamic response is emerging as an alternative. Due to the prohibitive cost of STATCOM, however, grid operators have begun applying a new concept of hybrid STATCOM, which is a combination of mechanically switched capacitors (MSCs) and STATCOM. Thus, this paper investigates the use of new coordinated control between STATCOM and MSCs, and the solution relies on the required reactive power estimation method using online grid strength level (OGSL) index, which is newly proposed in this paper, and the optimal MSCs allocation algorithm. Following the proposed procedure, an improved coordinated control scheme is obtained whose objective is to reduce the switching times of the MSCs while maximizing the reserve reactive power margin of the STATCOM in transient state. This proposal is analyzed on the Jeju island power system in South Korea with the developed hybrid STATCOM model.

AB - The penetration level of renewable energy resources has grown in such a way that their effects on the power system can no longer be neglected. In order to cope with these problems, grid operators are forced to improve the stability of the grid connection point, and the static synchronous compensator (STATCOM), which has a fast dynamic response is emerging as an alternative. Due to the prohibitive cost of STATCOM, however, grid operators have begun applying a new concept of hybrid STATCOM, which is a combination of mechanically switched capacitors (MSCs) and STATCOM. Thus, this paper investigates the use of new coordinated control between STATCOM and MSCs, and the solution relies on the required reactive power estimation method using online grid strength level (OGSL) index, which is newly proposed in this paper, and the optimal MSCs allocation algorithm. Following the proposed procedure, an improved coordinated control scheme is obtained whose objective is to reduce the switching times of the MSCs while maximizing the reserve reactive power margin of the STATCOM in transient state. This proposal is analyzed on the Jeju island power system in South Korea with the developed hybrid STATCOM model.

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KW - MSCs

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KW - online grid strength estimation

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DO - 10.1109/ACCESS.2019.2924296

M3 - Article

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VL - 7

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JF - IEEE Access

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ER -

Improved coordinated control strategy for hybrid STATCOM using required reactive power estimation method

Abstract

Bibliographical note

UN SDGs

Keywords

ASJC Scopus subject areas

Access to Document

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