DC Voltage Adaptive Droop Control Strategy for a Hybrid Multi-Terminal HVDC System
To solve the problems of DC voltage control and power allocation in the hybrid multi-terminal high voltage direct current system effectively, a DC voltage adaptive droop control strategy based on DC voltage-current characteristics is proposed. Based on adjustment of the droop coefficient of the conv...
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Online Access: | https://www.mdpi.com/1996-1073/12/3/380 |
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doaj-4cf12f96026f44598ba69ef18023491c2020-11-25T00:27:21ZengMDPI AGEnergies1996-10732019-01-0112338010.3390/en12030380en12030380DC Voltage Adaptive Droop Control Strategy for a Hybrid Multi-Terminal HVDC SystemYingpei Liu0La Zhang1Haiping Liang2School of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071003, ChinaSchool of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071003, ChinaSchool of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071003, ChinaTo solve the problems of DC voltage control and power allocation in the hybrid multi-terminal high voltage direct current system effectively, a DC voltage adaptive droop control strategy based on DC voltage-current characteristics is proposed. Based on adjustment of the droop coefficient of the converter station, the proposed control strategy introduces the influence factor of the droop coefficient, which considers the dynamic power margin of the converter station according to the direction of DC current variation in the converter station. When changes in the hybrid multi-terminal high voltage direct current system power flow occur, the droop coefficient of the converter station can be adjusted by the influence factor of the droop coefficient, so that the converter station can participate in power regulation according to its own power regulating ability. Consequently, the proposed control strategy can reasonably allocate the active power and minimize the deviation of the DC voltage. Besides, the stability analysis of the proposed control strategy is also carried out. Simulation results have verified the feasibility and effectiveness of the proposed control strategy.https://www.mdpi.com/1996-1073/12/3/380adaptive droop controldeviation of the DC voltagehybrid multi-terminal high voltage direct current systeminfluence factor of the droop coefficientpower margin |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yingpei Liu La Zhang Haiping Liang |
spellingShingle |
Yingpei Liu La Zhang Haiping Liang DC Voltage Adaptive Droop Control Strategy for a Hybrid Multi-Terminal HVDC System Energies adaptive droop control deviation of the DC voltage hybrid multi-terminal high voltage direct current system influence factor of the droop coefficient power margin |
author_facet |
Yingpei Liu La Zhang Haiping Liang |
author_sort |
Yingpei Liu |
title |
DC Voltage Adaptive Droop Control Strategy for a Hybrid Multi-Terminal HVDC System |
title_short |
DC Voltage Adaptive Droop Control Strategy for a Hybrid Multi-Terminal HVDC System |
title_full |
DC Voltage Adaptive Droop Control Strategy for a Hybrid Multi-Terminal HVDC System |
title_fullStr |
DC Voltage Adaptive Droop Control Strategy for a Hybrid Multi-Terminal HVDC System |
title_full_unstemmed |
DC Voltage Adaptive Droop Control Strategy for a Hybrid Multi-Terminal HVDC System |
title_sort |
dc voltage adaptive droop control strategy for a hybrid multi-terminal hvdc system |
publisher |
MDPI AG |
series |
Energies |
issn |
1996-1073 |
publishDate |
2019-01-01 |
description |
To solve the problems of DC voltage control and power allocation in the hybrid multi-terminal high voltage direct current system effectively, a DC voltage adaptive droop control strategy based on DC voltage-current characteristics is proposed. Based on adjustment of the droop coefficient of the converter station, the proposed control strategy introduces the influence factor of the droop coefficient, which considers the dynamic power margin of the converter station according to the direction of DC current variation in the converter station. When changes in the hybrid multi-terminal high voltage direct current system power flow occur, the droop coefficient of the converter station can be adjusted by the influence factor of the droop coefficient, so that the converter station can participate in power regulation according to its own power regulating ability. Consequently, the proposed control strategy can reasonably allocate the active power and minimize the deviation of the DC voltage. Besides, the stability analysis of the proposed control strategy is also carried out. Simulation results have verified the feasibility and effectiveness of the proposed control strategy. |
topic |
adaptive droop control deviation of the DC voltage hybrid multi-terminal high voltage direct current system influence factor of the droop coefficient power margin |
url |
https://www.mdpi.com/1996-1073/12/3/380 |
work_keys_str_mv |
AT yingpeiliu dcvoltageadaptivedroopcontrolstrategyforahybridmultiterminalhvdcsystem AT lazhang dcvoltageadaptivedroopcontrolstrategyforahybridmultiterminalhvdcsystem AT haipingliang dcvoltageadaptivedroopcontrolstrategyforahybridmultiterminalhvdcsystem |
_version_ |
1725340567741661184 |