Flexible voltage control to support Distributed Generation in distribution networks
Flexible voltage control to support Distributed Generation in distribution networks
复制标题
灵活的电压控制支持配电网中的分布式发电
DOI：
10.1109/upec.2008.4651447
复制
发表时间：
2008
期刊：
影响因子：
--
通讯作者：
P. Lang
中科院分区：
文献类型：
--
作者：
M. Fila;G. Taylor;J. Hiscock;M. Irving;P. Lang
分布式发电（DG）在配电网中的渗透率不断提高，极大地改变了电网中的实际潮流和无功潮流，并可能产生严重的电压控制问题。此外，传统的自动电压控制（AVC）方案通常可以处理反向潮流，但在某些条件下无法处理与DG存在相关的电压问题。在这种情况下，已经部署了几种技术来改善配电网电压分布，例如网络加固或远程电压传感装置的主动电压控制。另一种已经提出并最近实施的方法是SuperTAPP n+继电器方案，该方案基于在变电站一级进行的本地测量并结合状态估计技术。这种方法可以评估DG连接点的电压上升，有效地控制变电站的电压水平。本文的第一个目标是提出基于局部测量信号的DG配电网创新电压控制方案的基本原理。其次，最灵活方案的功能将通过软件模拟来展示，该软件模拟了一系列基于法国电力公司实际网络场景的配电网案例研究。最后，讨论了supertappn +中继方案的建模和分析结果及其可行的应用，并给出了详细的结论。
Increasing penetration of Distributed Generation (DG) in distribution networks significantly changes both the real and reactive power flows in the network and can create serious voltage control problems. Furthermore, traditional Automatic Voltage Control (AVC) schemes that can normally deal with the reverse power flows, are unable to cope with the voltage problems associated with the presence of DG under certain conditions. Several techniques have been deployed to improve distribution network voltage profiles in such cases, for instance network reinforcement or active voltage control with remote voltage sensing units. Another method that has been proposed and recently implemented is the SuperTAPP n+ relay scheme that is based on locally taken measurements at the substation level combined with a state estimation technique. Such an approach enables assessment of the voltage rise at the point of connection of DG and effective control of the voltage level at the substation. The first objective of this paper is to present the fundamental principles of innovative voltage control schemes for distribution networks with DG based on locally measured signals. Secondly the functionality of the most flexible scheme will be demonstrated via software simulation for a range of distribution network case studies based upon realistic EDF Energy network scenarios. Finally, the results from the modelling and analysis of the SuperTAPP n+ relay scheme and its feasible application will be discussed and detailed conclusions are presented.