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Specification, Control, and Applicat...

Bhatta, Sagar.

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Specification, Control, and Applications of Z-Source Circuit Breakers for the Protection of DC Power Networks.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Specification, Control, and Applications of Z-Source Circuit Breakers for the Protection of DC Power Networks./
作者:	Bhatta, Sagar.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
面頁冊數:	143 p.
附註:	Source: Dissertations Abstracts International, Volume: 82-12, Section: B.
Contained By:	Dissertations Abstracts International82-12B.
標題:	Electrical engineering. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28322209
ISBN:	9798516059827

Specification, Control, and Applications of Z-Source Circuit Breakers for the Protection of DC Power Networks.
Bhatta, Sagar.

Specification, Control, and Applications of Z-Source Circuit Breakers for the Protection of DC Power Networks. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 143 p.

Source: Dissertations Abstracts International, Volume: 82-12, Section: B.

Thesis (Ph.D.)--Old Dominion University, 2021.

This item must not be sold to any third party vendors.

There is a highly-increasing demand for the DC power transmission and distribution in modern power systems for the integration of newly-installed renewable energy resources and storage systems to the existing utilities. Application of DC power systems in electric ships, battery energy devices, high-voltage DC networks, smart grids, electric vehicles, microgrids, and wind farms is a recent trend that is being highly investigated. The fault protection of DC systems is an essential but challenging issue that needs careful attention to maintain system operation reliability and device safety. In this research, the specification, control, and application of Z-source breakers (ZCBs) are investigated for DC network protection. Initially, the power loss associated with the topology of ZCBs is a key consideration in the design, and thus, the most efficient ZCB topology is identified. In this study, the topology of inter-cross-connected bi-directional ZCB (ICC-BZCB) was selected due to its least power loss when operating in a steady-state condition. Based on ICC-BZCB, a new approach of parameter specification is proposed by considering the reverse-recovery time of thyristors. The proposed approach ensures the turnoff action of ZCB in practical application. Its effectiveness was verified by experimental tests on a hardware testbed in the laboratory. Secondly, a new method of specifying the Z-source capacitances is proposed to identify the high-impedance faults in DC power networks. The method defines the principle of HIF detection and interruption by monitoring the status of Z-source capacitances. Finally, the assessment of cable length limit for ZCB application is analyzed for the DC system applications. It has been found that the cable length limit decreases along with the decreasing fault current level, as well as the increasing power delivery level. The cutoff performance of the ZCBs is significantly impacted by the line parameters of the power cables. The outcomes of this research benefit the component design and application design of ZCB devices, which would promote the technology readiness level of ZCB's practice in the DC system protection.

ISBN: 9798516059827Subjects--Topical Terms:

649834
Electrical engineering.
Subjects--Index Terms:

Cable Length Limit

Specification, Control, and Applications of Z-Source Circuit Breakers for the Protection of DC Power Networks.
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245 1 0 $a Specification, Control, and Applications of Z-Source Circuit Breakers for the Protection of DC Power Networks.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2021
300 $a 143 p.
500 $a Source: Dissertations Abstracts International, Volume: 82-12, Section: B.
500 $a Advisor: Zhang, Yucheng.
502 $a Thesis (Ph.D.)--Old Dominion University, 2021.
506 $a This item must not be sold to any third party vendors.
520 $a There is a highly-increasing demand for the DC power transmission and distribution in modern power systems for the integration of newly-installed renewable energy resources and storage systems to the existing utilities. Application of DC power systems in electric ships, battery energy devices, high-voltage DC networks, smart grids, electric vehicles, microgrids, and wind farms is a recent trend that is being highly investigated. The fault protection of DC systems is an essential but challenging issue that needs careful attention to maintain system operation reliability and device safety. In this research, the specification, control, and application of Z-source breakers (ZCBs) are investigated for DC network protection. Initially, the power loss associated with the topology of ZCBs is a key consideration in the design, and thus, the most efficient ZCB topology is identified. In this study, the topology of inter-cross-connected bi-directional ZCB (ICC-BZCB) was selected due to its least power loss when operating in a steady-state condition. Based on ICC-BZCB, a new approach of parameter specification is proposed by considering the reverse-recovery time of thyristors. The proposed approach ensures the turnoff action of ZCB in practical application. Its effectiveness was verified by experimental tests on a hardware testbed in the laboratory. Secondly, a new method of specifying the Z-source capacitances is proposed to identify the high-impedance faults in DC power networks. The method defines the principle of HIF detection and interruption by monitoring the status of Z-source capacitances. Finally, the assessment of cable length limit for ZCB application is analyzed for the DC system applications. It has been found that the cable length limit decreases along with the decreasing fault current level, as well as the increasing power delivery level. The cutoff performance of the ZCBs is significantly impacted by the line parameters of the power cables. The outcomes of this research benefit the component design and application design of ZCB devices, which would promote the technology readiness level of ZCB's practice in the DC system protection.
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650 4 $a Electromagnetics. $3 3173223
650 4 $a Energy. $3 876794
650 4 $a Systems science. $3 3168411
653 $a Cable Length Limit
653 $a DC protection
653 $a High Impedance Fault
653 $a SCR turnoff
653 $a Tripping time
653 $a Z-source Circuit Breaker
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690 $a 0607
690 $a 0790
690 $a 0791
710 2 $a Old Dominion University. $b Electrical/Computer Engineering. $3 3351310
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792 $a 2021
793 $a English
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