| 多端柔性直流输电系统新型直流电压控制策略 |
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| 引用本文： | 阎发友,马巍巍,朱琳,李婧妍. 多端柔性直流输电系统新型直流电压控制策略[J]. 智能电网, 2013, 1(2): 17-21 |
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| 作者姓名： | 阎发友 马巍巍 朱琳 李婧妍 |
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| 作者单位： | 中国电力科学研究院;国网智能电网研究院中电普瑞电力工程有限公司;国网智能电网研究院中电普瑞电力工程有限公司;中国电力科学研究院 |
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| 摘 要： | 随着电压源型换流器的发展，多端柔性直流输电技术受到了越来越多的关注。提出一种适用于多端柔性直流输电系统的新型直流电压控制策略。该策略通过在直流电压斜率控制中引入一个公共直流参考电压，作为多点直流电压控制换流站的电压反馈控制信号。最后，在PSCAD/EMTDC中建立基于模块化多电平换流器的4端柔性直流输电仿真模型，对所提出直流电压控制策略的特性进行稳态和暂态仿真验证。仿真结果表明：利用所提出的直流电压控制策略，多端柔性直流输电系统能够稳定、可靠地运行。
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| 关 键 词： | 多端柔性直流输电系统；直流电压控制；模块化多电平换流器；新型斜率控制；公共参考电压 |
A Novel DC Voltage Control Strategy for Multi-terminal VSC-HVDC System |
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| YAN Fayou,MA Weiwei,ZHU Lin and LI Jingyan. A Novel DC Voltage Control Strategy for Multi-terminal VSC-HVDC System[J]. Smart Grid, 2013, 1(2): 17-21 |
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| Authors: | YAN Fayou MA Weiwei ZHU Lin LI Jingyan |
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| Affiliation: | China Electric Power Research Institute;C-EPRI Electric Power Engineering CO., Ltd, State Grid Smart Grid Research Institute;C-EPRI Electric Power Engineering CO., Ltd, State Grid Smart Grid Research Institute;China Electric Power Research Institute |
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| Abstract: | With the development of voltage source converter (VSC), the multiterminal HVDC system based on VSC (VSC-MTDC) has received increasing attention. A novel DC voltage control strategy was proposed for VSC-MTDC. A common DC voltage is introduced as a feedback signal in the DC voltage feed-back control loop. Finally, A four-terminal VSC-MTDC model based on modular multilevel converter (MMC) was developed in PSCAD/EMTDC and then steady and transient state was performed to validate the feasibility of the proposed DC voltage droop control strategy. The simulation results prove that by applying the novel DC control strategy, the VSC-MTDC system can run stably and reliably both in steady state and transient state. |
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| Keywords: | multiterminal HVDC system based on voltage source converter DC voltage control modular multilevel converter novel droop control common reference voltage |
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