Distribution Voltage Control Considering the Impact of PV Generation on Tap Changers and Autonomous Regulators
Distribution Voltage Control Considering the Impact of PV Generation on Tap Changers and Autonomous Regulators
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DOI：
10.1109/tpwrs.2013.2279721
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发表时间：
2014
影响因子：
6.6
通讯作者：
Yashodhan P. Agalgaonkar;B. Pal;R. Jabr
中科院分区：
文献类型：
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作者：
Yashodhan P. Agalgaonkar;B. Pal;R. Jabr
从光伏（PV）中吸收可变兆瓦的能量对配电系统的运行提出了挑战。主要问题是馈电线中的电压显著升高，这迫使现有的电压控制设备（例如有载分接开关和线路电压调节器）连续操作。其结果是电压控制机构的工作寿命变差。此外，传统的非协调无功功率控制可能导致线路调节器在其控制极限（失控条件）下操作。提出了一种基于负荷和辐射预测的最优无功协调策略。其目的是尽量减少分接操作的次数，以便不减少分接控制机构的工作寿命，并避免失控。所提出的目标是通过协调配电网络中的各种无功功率控制选项，同时满足约束条件，如最大功率点跟踪的PV和馈线的电压限制。还考虑了光伏电站的电压支持选项。将问题转化为约束优化问题，并通过内点法求解.在一个现实的分销网络模型中证明了该方法的有效性。
The uptake of variable megawatts from photovoltaics (PV) challenges distribution system operation. The primary problem is significant voltage rise in the feeder that forces existing voltage control devices such as on-load tap-changers and line voltage regulators to operate continuously. The consequence is the deterioration of the operating life of the voltage control mechanism. Also, conventional non-coordinated reactive power control can result in the operation of the line regulator at its control limit (runaway condition). This paper proposes an optimal reactive power coordination strategy based on the load and irradiance forecast. The objective is to minimize the number of tap operations so as not to reduce the operating life of the tap control mechanism and avoid runaway. The proposed objective is achieved by coordinating various reactive power control options in the distribution network while satisfying constraints such as maximum power point tracking of PV and voltage limits of the feeder. The option of voltage support from PV plant is also considered. The problem is formulated as constrained optimization and solved through the interior point technique. The effectiveness of the approach is demonstrated in a realistic distribution network model.