Experimental Validation of Dual H-Bridge Current Flow Controllers for Meshed HVdc Grids
Experimental Validation of Dual H-Bridge Current Flow Controllers for Meshed HVdc Grids
复制标题
适用于网状 HVdc 电网的双 H 桥电流控制器的实验验证
DOI：
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发表时间：
2018
影响因子：
4.4
通讯作者：
A. Adamczyk
中科院分区：
文献类型：
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作者：
S. Balasubramaniam;C. E. Ugalde;Jun Liang;T. Joseph;R. King;A. Adamczyk
直流线路的载流能力受其热应力和电应力极限的限制。因此，线路电流必须保持在允许的工作范围内，以保护线路免受损坏。在密集的直流电网中，如果不包括额外的控制装置，就无法实现对每条线路电流的控制。本文采用双h桥电流控制器（2B-CFC），通过与直流线路串联提供直流电压补偿，实现对直流电网线路潮流的管理。提出了一种集中分层控制系统，以协调多个CFCs之间的运行。提出了一种新的电压共享控制方案。结果表明，该方案通过在多个CFC之间共享所需的控制电压，减少了单个CFC的工作量，并且可以避免在通信失败时主动CFC之间的控制冲突。开发了一个由三端直流电网和小型2B-CFC原型组成的实验平台来验证这些概念。为了完整起见，本文分析了过载和无通信情况下的CFC性能。为了研究CFC在极对极故障下的性能，研制了小型直流断路器。
The current-carrying capability of dc lines is limited by their thermal and electric stress limits. Thus, the line current must be maintained within the permissible operational region to protect the lines from damage. In a dense dc grid, control over each line current cannot be achieved without including additional control devices. In this paper, a dual H-bridge current flow controller (2B-CFC) is used to manage the dc grid line power flow by providing dc voltage compensation in series with dc lines. A centralized hierarchical control system is proposed to coordinate the operation between multiple CFCs. A novel voltage-sharing control scheme is demonstrated. It is shown that such a scheme reduces the workload on a single CFC by sharing the required control voltage between multiple CFCs, and, in addition, can be used to avoid control conflicts among active CFCs during communication failure. An experimental platform consisting of a three-terminal dc grid and small-scale 2B-CFC prototypes has been developed to validate the concepts. For completeness, the CFC performance has been analyzed for overload conditions and when no communication exists. Small-scale dc circuit breakers have been developed to study the CFC performance under a pole-to-pole fault.
DOI：
10.1109/upec.2014.6934626
发表时间：
2014-10
期刊：
2014 49th International Universities Power Engineering Conference (UPEC)
影响因子：
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作者：
S. Balasubramaniam;Jun Liang;C. E. Ugalde-Loo
通讯作者：
S. Balasubramaniam;Jun Liang;C. E. Ugalde-Loo