Benefits analysis of Soft Open Points for electrical distribution network operation
Benefits analysis of Soft Open Points for electrical distribution network operation
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DOI：
10.1016/j.apenergy.2015.12.022
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发表时间：
2016-03
期刊：
影响因子：
11.2
通讯作者：
Wanyu Cao;Jianzhong Wu;N. Jenkins;Chengshan Wang;T. Green
中科院分区：
文献类型：
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作者：
Wanyu Cao;Jianzhong Wu;N. Jenkins;Chengshan Wang;T. Green
软开关点(SOP)是在配电网中安装的代替常开点的电力电子装置。它们能够在正常网络运行条件下提供有源潮流控制、无功补偿和电压调节，以及在异常情况下提供快速故障隔离和供电恢复。建立了一个静态分析框架，用于量化正常运行条件下含SOP的配电网运行效益。建立了一个通用的功率注入模型，并利用改进的Powell直接集法确定了SOP的最优运行模式。该模型考虑了SOP器件(基于背靠背电压型变流器)的物理极限和功率损耗。开发了配电网重构算法，包括有无SOP，并用于确定使用SOP的好处。在33节点配电网上的测试结果比较了使用SOP、传统网络重构以及两者结合的好处。结果表明，与在所有分支机构都配备远程控制交换机的情况下使用网络重构的情况相比，仅使用一个SOP在网络运行方面取得了类似的改善。SOP控制和网络重新配置的组合提供了最佳的网络运行。
Soft Open Points (SOPs) are power electronic devices installed in place of normally-open points in electrical power distribution networks. They are able to provide active power flow control, reactive power compensation and voltage regulation under normal network operating conditions, as well as fast fault isolation and supply restoration under abnormal conditions. A steady state analysis framework was developed to quantify the operational benefits of a distribution network with SOPs under normal network operating conditions. A generic power injection model was developed and used to determine the optimal SOP operation using an improved Powell’s Direct Set method. Physical limits and power losses of the SOP device (based on back to back voltage-source converters) were considered in the model. Distribution network reconfiguration algorithms, with and without SOPs, were developed and used to identify the benefits of using SOPs. Test results on a 33-bus distribution network compared the benefits of using SOPs, traditional network reconfiguration and the combination of both. The results showed that using only one SOP achieved a similar improvement in network operation compared to the case of using network reconfiguration with all branches equipped with remotely controlled switches. A combination of SOP control and network reconfiguration provided the optimal network operation.