Online hierarchical and distributed method for voltage control in distribution smart grids
Online hierarchical and distributed method for voltage control in distribution smart grids
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DOI：
10.1049/iet-gtd.2016.1096
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发表时间：
2017-03
影响因子：
2.5
通讯作者：
Hossein Fallahzadeh-Abarghouei;M. Nayeripour;S. Hasanvand;E. Waffenschmidt
中科院分区：
文献类型：
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作者：
Hossein Fallahzadeh-Abarghouei;M. Nayeripour;S. Hasanvand;E. Waffenschmidt
提出了一种基于协调分布式智能电网的不平衡配电网分布式发电机和有载调压变压器优化设定值的方法。该方法在可再生能源和负载的不同运行条件下，提高了能源效率，并将电压分布保持在可接受的范围内。在所提出的分层方法的第一级中，分布式电源以最优的方式独立地试图将电压分布保持在可接受的范围内。如果第一级不成功，则在第二级，OLTC与第一级合作以消除系统中的电压违规。基于分布式梯度算法，推导了控制定值的更新规则。与集中式优化方案相比，所提出的分布式方案具有相似的稳态结果。由于减少了处理数据，因此可以实现对改变操作条件的短时间响应。对三个不同规模的配电试验系统的仿真结果验证了所提出的控制方案的有效性。
This study proposes a coordinated and distributed smart grid based method for optimal set points of distributed generators (DGs) as well as on-load tap changer (OLTC) transformer in the unbalanced power distribution grid. In this approach, energy efficiency is improved and voltage profile is kept in an acceptable range under different operating conditions of renewable energy resources and loads. In the first level of proposed hierarchical method, DGs are independently trying to keep voltage profile in an acceptable range in an optimal way. If the first level is not succeeding, at the second level, OLTC cooperates with the first level to eliminate the voltage violation in the system. The rules for updating control setting are derived based on distributed gradient algorithm. The proposed distributed solution presents analogous steady state results in comparison with centralised optimisation solution. Since the processing data is reduced, short-timed response to change operating conditions could be achieved. Simulation results on three distribution test systems with different sizes demonstrate the effectiveness of proposed control solution.