Research and application of a power-flow-calculation method in multiterminal VSC-HVDC power grid

For demonstrating a multiterminal voltage-source converter (VSC)-based high-voltage DC (HVDC) (VSC- HVDC) project, this study puts forward a technical route for calculating the power flow in a 500-kV VSC-HVDC power grid in comparison with that of an AC power grid. The Jacobian matrix used in the pow...

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Main Authors: Linlin Wu, Xiaowei Fan, Man Xu, Zhendong Li, Xiao Wang, Xiaofei Zhang, Haiwang Jin
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2019-02-01
Series:Global Energy Interconnection
Online Access:http://www.sciencedirect.com/science/article/pii/S2096511719300258
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spelling doaj-98df64b986fd4d1bb276408fc8a6d8be2021-04-02T10:38:35ZengKeAi Communications Co., Ltd.Global Energy Interconnection2096-51172019-02-01213744Research and application of a power-flow-calculation method in multiterminal VSC-HVDC power gridLinlin Wu0Xiaowei Fan1Man Xu2Zhendong Li3Xiao Wang4Xiaofei Zhang5Haiwang Jin6State Grid Jibei Electric Power Co. Ltd. Research Institute, No. 1 Dizang'an Nan Lane, Xicheng District, Beijing 100045, P.R. ChinaState Grid Jibei Electricity Power Maintenance Company, No. 3 Jinguang Street, Fangshan District, Beijing 102488, P.R. ChinaState Grid Jibei Electric Power Co. Ltd. Research Institute, No. 1 Dizang'an Nan Lane, Xicheng District, Beijing 100045, P.R. ChinaState Grid Jibei Electricity Power Maintenance Company, No. 3 Jinguang Street, Fangshan District, Beijing 102488, P.R. ChinaState Grid Jibei Electric Power Co. Ltd. Research Institute, No. 1 Dizang'an Nan Lane, Xicheng District, Beijing 100045, P.R. ChinaState Grid Jibei Electricity Power Maintenance Company, No. 3 Jinguang Street, Fangshan District, Beijing 102488, P.R. ChinaState Grid Jibei Electricity Power Maintenance Company, No. 3 Jinguang Street, Fangshan District, Beijing 102488, P.R. ChinaFor demonstrating a multiterminal voltage-source converter (VSC)-based high-voltage DC (HVDC) (VSC- HVDC) project, this study puts forward a technical route for calculating the power flow in a 500-kV VSC-HVDC power grid in comparison with that of an AC power grid. The Jacobian matrix used in the power-flow calculation was deduced through methods such as Newton-Laphson iteration and Taylor series expansion. Further, the operation effect of power- flow calculation on a true bipolar VSC-HVDC power grid was analyzed briefly. The elements of the Jacobian matrix corresponding to VSC were studied under the mode of droop control and the control strategy of VSC-HVDC power grid was analyzed in detail. The power-flow calculation model for VSC-HVDC power grid of the master-slave control mode was simplified using the PQ decomposition method of the power-flow calculation of an AC power grid. Moreover, a four-terminal model of the Zhangbei VSC-HVDC demonstration project was established and tested on MATLAB. The simulation results under two kinds of operating conditions were analyzed and compared to the results of BPA; the deviation between the power-flow results was studied. The results show that the proposed calculation method can provide a feasible support for calculating the power flow in VSC-HVDC grids. Keywords: VSC-HVDC grids, Power-flow calculation, Jacobian matrix, Droop controlhttp://www.sciencedirect.com/science/article/pii/S2096511719300258
collection DOAJ
language English
format Article
sources DOAJ
author Linlin Wu
Xiaowei Fan
Man Xu
Zhendong Li
Xiao Wang
Xiaofei Zhang
Haiwang Jin
spellingShingle Linlin Wu
Xiaowei Fan
Man Xu
Zhendong Li
Xiao Wang
Xiaofei Zhang
Haiwang Jin
Research and application of a power-flow-calculation method in multiterminal VSC-HVDC power grid
Global Energy Interconnection
author_facet Linlin Wu
Xiaowei Fan
Man Xu
Zhendong Li
Xiao Wang
Xiaofei Zhang
Haiwang Jin
author_sort Linlin Wu
title Research and application of a power-flow-calculation method in multiterminal VSC-HVDC power grid
title_short Research and application of a power-flow-calculation method in multiterminal VSC-HVDC power grid
title_full Research and application of a power-flow-calculation method in multiterminal VSC-HVDC power grid
title_fullStr Research and application of a power-flow-calculation method in multiterminal VSC-HVDC power grid
title_full_unstemmed Research and application of a power-flow-calculation method in multiterminal VSC-HVDC power grid
title_sort research and application of a power-flow-calculation method in multiterminal vsc-hvdc power grid
publisher KeAi Communications Co., Ltd.
series Global Energy Interconnection
issn 2096-5117
publishDate 2019-02-01
description For demonstrating a multiterminal voltage-source converter (VSC)-based high-voltage DC (HVDC) (VSC- HVDC) project, this study puts forward a technical route for calculating the power flow in a 500-kV VSC-HVDC power grid in comparison with that of an AC power grid. The Jacobian matrix used in the power-flow calculation was deduced through methods such as Newton-Laphson iteration and Taylor series expansion. Further, the operation effect of power- flow calculation on a true bipolar VSC-HVDC power grid was analyzed briefly. The elements of the Jacobian matrix corresponding to VSC were studied under the mode of droop control and the control strategy of VSC-HVDC power grid was analyzed in detail. The power-flow calculation model for VSC-HVDC power grid of the master-slave control mode was simplified using the PQ decomposition method of the power-flow calculation of an AC power grid. Moreover, a four-terminal model of the Zhangbei VSC-HVDC demonstration project was established and tested on MATLAB. The simulation results under two kinds of operating conditions were analyzed and compared to the results of BPA; the deviation between the power-flow results was studied. The results show that the proposed calculation method can provide a feasible support for calculating the power flow in VSC-HVDC grids. Keywords: VSC-HVDC grids, Power-flow calculation, Jacobian matrix, Droop control
url http://www.sciencedirect.com/science/article/pii/S2096511719300258
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