面向智能直流配网的高压大容量直流变压器控制策略研究
摘要：基于现有的谐振型CLLC变换器,采用输入级串联输出并联的多模块高压大容量直流变压器,在低压直流侧提供了多样化的直流负载以及分布式电源的接口。与传统的配电网变压器相比,新型直流变压器有助于高渗透率分布式能源的消纳,提高电能质量。本文分析了单个模块中输出功率、输出电压与移相角之间的关系,提出一种利用移相角进行功率均衡的控制策略。并在此基础上,提出了能量双向流动的控制策略,从而实现分布式能源柔性接入和高效利用。最后利用PSCAD仿真软件进行了仿真验证。
Abstract:In this paper, input-series-output-parallel multiple modules DC transformer with high voltage and large capacity is used based on the CLLC resonant converter, which provides a variety of ports for the DC load and distributed power supply at low-voltage DC side. Compared with the traditional transformers, the proposed DC transformers is helpful for distributed power consume, and improves the quality of electric energy. In this paper, the relationship between the output power, the phase-shifting angle and output voltage in the single module is analyzed, a control strategy is proposed for the power balancing by using phase-shifting angle. In addition, a bidirectional power flow control scheme is presented, which can achieve high efficient and flexible access of distribution resources. In the end, the simulation are carried out based on PSCAD.
标题：面向智能直流配网的高压大容量直流变压器控制策略研究
英文标题：Control Strategy of High-voltage Large-capacity DC Transformer Applied in the Intelligent DC Distribution Network
作者：李 琳, 张 琳,
关键词：直流配电网, 大容量直流变压器, 软开关, 功率均衡, 双向潮流控制,
发表日期：2017-02-09
- 文件大小:
- 2.84 MB
- 下载次数:
- 60
-
高速下载
|
|
