Research on shutdown control strategy of hybrid DC system

The hybrid DC system combined with line commutated converter (LCC) and hybrid modular multilevel converter (HY-MMC), which is named LCC-HY-MMC, has technical advantages and economy. Shutdown is a key problem that any DC system needs to face. In order to ensure that the DC system and the sub-module c...

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Main Authors: Feng Xu, Xiaoming Huang, Yi Lu, Peng Qiu, Chengyu Lu, Chao Ding
Format: Article
Language:English
Published: Elsevier 2022-11-01
Series:Energy Reports
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2352484722010174
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author Feng Xu
Xiaoming Huang
Yi Lu
Peng Qiu
Chengyu Lu
Chao Ding
author_facet Feng Xu
Xiaoming Huang
Yi Lu
Peng Qiu
Chengyu Lu
Chao Ding
author_sort Feng Xu
collection DOAJ
description The hybrid DC system combined with line commutated converter (LCC) and hybrid modular multilevel converter (HY-MMC), which is named LCC-HY-MMC, has technical advantages and economy. Shutdown is a key problem that any DC system needs to face. In order to ensure that the DC system and the sub-module capacitors of HY-MMC can be discharged quickly during shutdown stage, a complete shutdown control strategy is proposed in this paper. From the characteristics of shutdown, it can be basically regarded as three stages: DC energy feedback stage, controllable dissipation stage of sub-module capacitor energy and uncontrollable dissipation stage of sub-module capacitor energy. Finally, based on the 200 MW/ 200 kV digital simulation model built in the electromagnetic transient simulation software PSCAD/EMTDC, the effectiveness of the proposed method is verified.
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spelling doaj.art-1206716306504114b1f84b9d00430e572023-01-20T04:25:12ZengElsevierEnergy Reports2352-48472022-11-018438445Research on shutdown control strategy of hybrid DC systemFeng Xu0Xiaoming Huang1Yi Lu2Peng Qiu3Chengyu Lu4Chao Ding5Corresponding author.; State Grid Zhejiang Electric Power Research Institute, Hangzhou 310014, ChinaState Grid Zhejiang Electric Power Research Institute, Hangzhou 310014, ChinaState Grid Zhejiang Electric Power Research Institute, Hangzhou 310014, ChinaState Grid Zhejiang Electric Power Research Institute, Hangzhou 310014, ChinaState Grid Zhejiang Electric Power Research Institute, Hangzhou 310014, ChinaState Grid Zhejiang Electric Power Research Institute, Hangzhou 310014, ChinaThe hybrid DC system combined with line commutated converter (LCC) and hybrid modular multilevel converter (HY-MMC), which is named LCC-HY-MMC, has technical advantages and economy. Shutdown is a key problem that any DC system needs to face. In order to ensure that the DC system and the sub-module capacitors of HY-MMC can be discharged quickly during shutdown stage, a complete shutdown control strategy is proposed in this paper. From the characteristics of shutdown, it can be basically regarded as three stages: DC energy feedback stage, controllable dissipation stage of sub-module capacitor energy and uncontrollable dissipation stage of sub-module capacitor energy. Finally, based on the 200 MW/ 200 kV digital simulation model built in the electromagnetic transient simulation software PSCAD/EMTDC, the effectiveness of the proposed method is verified.http://www.sciencedirect.com/science/article/pii/S2352484722010174Hybrid HVDCShutdown controlCapacitor voltageHY-MMC
spellingShingle Feng Xu
Xiaoming Huang
Yi Lu
Peng Qiu
Chengyu Lu
Chao Ding
Research on shutdown control strategy of hybrid DC system
Energy Reports
Hybrid HVDC
Shutdown control
Capacitor voltage
HY-MMC
title Research on shutdown control strategy of hybrid DC system
title_full Research on shutdown control strategy of hybrid DC system
title_fullStr Research on shutdown control strategy of hybrid DC system
title_full_unstemmed Research on shutdown control strategy of hybrid DC system
title_short Research on shutdown control strategy of hybrid DC system
title_sort research on shutdown control strategy of hybrid dc system
topic Hybrid HVDC
Shutdown control
Capacitor voltage
HY-MMC
url http://www.sciencedirect.com/science/article/pii/S2352484722010174
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