多点直流电压控制在VSC-MTDC系统中的应用

IF 1.2 Q4 COMPUTER SCIENCE, INFORMATION SYSTEMS

Journal of Electrical and Computer Engineering Pub Date : 2013-01-01 DOI:10.1155/2013/257387

Yang Xi, Ai Qian, Huang Jiantao, An Yiran

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引用次数: 1

摘要

基于电压源变换器(VSC)的多终端VSC- hvdc输电系统(VSC- mtdc)是实现风电场与电网连接的理想途径。分析了双馈感应发电机的特点，结合VSC-MTDC的基本原理和控制策略，提出了一种适用于与VSC-MTDC连接的风电场的多端直流电压控制策略。利用PSCAD/EMTDC对所提出的控制策略进行了仿真，仿真结果表明，所提出的控制策略可以自动实现恒功率控制模式与恒直流电压控制模式之间的转换;从而在直流恒压控制换流站故障停机及其他故障情况下，保证风电场直流电压稳定控制和可靠输出。仿真结果表明，该模型能够实现多端功率传输和快速响应控制。

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Application of multipoint DC voltage control in VSC-MTDC system

The voltage-source-converter- (VSC-) based multiterminal VSC-HVDC power transmission system (VSC-MTDC) is an ideal approach to connectwind farmwith power grid. Analyzing the characteristics of doubly fed induction generators aswell as the basic principle and the control strategy of VSC-MTDC, a multiterminal DC voltage control strategy suitable for wind farm connected with VSC-MTDC is proposed. By use of PSCAD/EMTDC, the proposed control strategy is simulated, and simulation results show that using the proposed control strategy the conversion between constant power control mode and constant DC voltage control mode can be automatically implemented; thus the DC voltage stability control and reliable power output of wind farm can be ensured after the fault-caused outage of converter station controlled by constant DC voltage and under other faults. The simulation result shows that the model can fulfill multiterminal power transmission and fast response control.

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