MVDC link in a 33 kV distribution network
MVDC link in a 33 kV distribution network
复制标题
33 kV 配电网中的 MVDC 链路
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
James Yu
中科院分区：
文献类型：
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作者：
C. Long;Jianzhong Wu;Kevin Smith;A. Moon;R. Bryans;James Yu
对安格尔西岛和北威尔士大陆之间拟议的中压直流（MVDC）连接的33千伏配电网络的性能进行了评估。作为Ofgem电力网络创新竞赛项目ANGLE-DC的一部分，MVDC链路将在广泛的需求和发电条件下进行模拟，其控制策略基于三个132/33千伏电网变压器（gt）的实时数据，这些变压器为岛屿网络供电或更广泛的监控和数据采集（SCADA）系统。通过对网络损耗的敏感性分析，确定了基于GT数据控制的MVDC链路的有功功率设定点。对于更广泛的基于SCADA系统的控制，采用最优潮流法获得最优设定点。考虑正常网络和N - 1条件，对配电网损耗和DG承载能力进行了评估。本研究发现，MVDC链路的使用增加了网络的DG承载能力，但根据负载和发电条件以及控制策略，网络损耗可能会增加或减少。
The performance of a 33 kV distribution network with a proposed medium-voltage DC (MVDC) link between the island of Anglesey and the mainland in North Wales was assessed. The MVDC link, which will be constructed as part of the Ofgem Electricity Network Innovation Competition project ANGLE-DC, was simulated under a wide range of demand and generation, with control strategies based on real-time data from the three 132/33 kV grid transformers (GTs) that supply the island network or the wider supervisory control and data acquisition (SCADA) system. The active power set points of the MVDC link for the GT data-based control were determined by a sensitivity analysis of the network losses. For a wider SCADA system-based control, optimal set points were obtained using an optimal power flow method. The network losses and hosting capacity of distribution generation (DG) were assessed considering both normal network and N−1 conditions. This study found that the use of the MVDC link increased the DG hosting capacity of the network, but network losses might be increased or reduced depending on the load and generation conditions, and control strategies.