一种适用于柔性直流配电网的电压控制策略
发布时间：2018-09-07 10:12
【摘要】：随着分布式能源的兴起和电力电子技术的发展,相比交流配电网,直流配电网拥有更大的发展潜力。该文首先对直流配电网的拓扑结构、控制方法以及模式切换问题进行了阐述。其次,为了有效解决配网系统中复杂的模式切换问题,简化控制流程和优化潮流控制,文中提出了一种适用于直流配电网的电压控制策略,该策略使各端电压源换流站均具有维持电压和调节功率的能力,其中主站作为功率平衡节点,并为系统提供参考电压。最后,在PSCAD/EMTDC中建立了双端和三端直流配电网结构的仿真模型。通过仿真验证了该直流配电网电压控制策略的有效性。
[Abstract]:With the rise of distributed energy and the development of power electronics technology, DC distribution network has more potential than AC distribution network. In this paper, the topology, control method and mode switching of DC distribution network are discussed. Secondly, in order to effectively solve the complex mode switching problem in distribution network system, simplify the control flow and optimize power flow control, a voltage control strategy suitable for DC distribution network is proposed in this paper. The strategy makes the terminal voltage source converter stations have the ability to maintain voltage and adjust power. The main station acts as the power balance node and provides the reference voltage for the system. At last, the simulation model of two-terminal and three-terminal DC distribution network is established in PSCAD/EMTDC. The effectiveness of the voltage control strategy is verified by simulation.
【作者单位】： 东南大学电气工程学院;清华大学电机工程与应用电子技术系;南方电网科学研究院;
【基金】：国家高技术研究发展计划项目(863计划)(2015AA050103) 江苏省产学研前瞻性联合研究项目(BY2014127-15)~~
【分类号】：TM721.1
[Abstract]:With the rise of distributed energy and the development of power electronics technology, DC distribution network has more potential than AC distribution network. In this paper, the topology, control method and mode switching of DC distribution network are discussed. Secondly, in order to effectively solve the complex mode switching problem in distribution network system, simplify the control flow and optimize power flow control, a voltage control strategy suitable for DC distribution network is proposed in this paper. The strategy makes the terminal voltage source converter stations have the ability to maintain voltage and adjust power. The main station acts as the power balance node and provides the reference voltage for the system. At last, the simulation model of two-terminal and three-terminal DC distribution network is established in PSCAD/EMTDC. The effectiveness of the voltage control strategy is verified by simulation.
【作者单位】： 东南大学电气工程学院;清华大学电机工程与应用电子技术系;南方电网科学研究院;
【基金】：国家高技术研究发展计划项目(863计划)(2015AA050103) 江苏省产学研前瞻性联合研究项目(BY2014127-15)~~
【分类号】：TM721.1
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