新型直流电网潮流控制器及其控制方法

发布时间：2018-04-27 22:28

本文选题：直流电网 + 环网　；参考：《电力系统自动化》2017年04期

【摘要】：直流潮流控制器能够有效提升环网式直流电网的潮流控制自由度,解决直流电网部分线路潮流不可控问题。针对现有直流潮流控制器应用场合的局限性,基于电容线间能量交换的思路,提出一种新型直流潮流控制器拓扑,并对其工作原理和运行特性进行了深入研究。基于新型潮流控制器的多种运行状态,设计了基于脉宽调制(PWM)的控制策略,并以其中一种运行状态为例,研究了各状态变量之间的关系。最后,在电磁暂态仿真软件中搭建等效三端直流环网模型,验证了所提出的直流电网潮流控制器拓扑方案与控制策略的可行性与有效性。
[Abstract]:DC power flow controller can effectively enhance the degree of freedom of power flow control in the loop DC network and solve the problem of uncontrollable power flow in some lines of DC network. In view of the limitations of current DC power flow controllers, a new DC power flow controller topology is proposed based on the idea of energy exchange between capacitor lines, and its working principle and operating characteristics are studied in depth. A control strategy based on pulse width modulation (PWM) is designed based on a variety of running states of a new power flow controller. Taking one of the states as an example, the relationship between the state variables is studied. Finally, an equivalent three-terminal DC loop network model is built in the electromagnetic transient simulation software, which verifies the feasibility and effectiveness of the proposed topology scheme and control strategy of DC power flow controller.
【作者单位】：中国科学院大学电子电气与通信工程学院;中国科学院电工研究所;
【基金】：国家自然科学基金资助项目(51607171)~~
【分类号】：TM721.1;TM76

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