Active Management of Low-Voltage Networks for Mitigating Overvoltages Due to Photovoltaic Units
Active Management of Low-Voltage Networks for Mitigating Overvoltages Due to Photovoltaic Units
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DOI：
10.1109/tsg.2015.2410171
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发表时间：
2016-03-01
影响因子：
9.6
通讯作者：
Van Cutsem, Thierry
中科院分区：
文献类型：
--
作者：
Olivier, Frederic;Aristidou, Petros;Van Cutsem, Thierry
本文讨论了将光伏板集成到低压配电网中可能产生的过电压问题。提出了一种分布式方案，通过调整逆变器的无功输出和有功输出来防止或缓解这类问题。该方案是无模型的，并且仅在紧急情况下以遇险信号的形式利用控制器之间的有限通信。它优先考虑无功功率的使用，而有功功率的削减只作为最后的手段。通过对单个低压馈线和由14个低压馈线组成的更大网络的动态仿真研究了该方案的行为。将其性能与以有功弃流最小为目标的基于最优潮流（OPF）问题求解的集中式方案进行了比较。该方案成功地缓解了由于高PV渗透率而导致的过电压情况，并且性能几乎与基于opf的解决方案一样好，且信息和通信需求明显减少。
In this paper, the overvoltage problems that might arise from the integration of photovoltaic (PV) panels into low-voltage (LV) distribution networks is addressed. A distributed scheme is proposed that adjusts the reactive and active power output of inverters to prevent or alleviate such problems. The proposed scheme is model-free and makes use of limited communication between the controllers in the form of a distress signal only during emergency conditions. It prioritizes the use of reactive power, while active power curtailment is performed only as a last resort. The behavior of the scheme is studied using dynamic simulations on a single LV feeder and on a larger network composed of 14 LV feeders. Its performance is compared with a centralized scheme based on the solution of an optimal power flow (OPF) problem, whose objective function is to minimize the active power curtailment. The proposed scheme successfully mitigates overvoltage situations due to high PV penetration and performs almost as well as the OPF-based solution with significantly less information and communication requirements.