Distributed voltage regulation of smart distribution networks: Consensus-based information synchronization and distributed model predictive control scheme
Distributed voltage regulation of smart distribution networks: Consensus-based information synchronization and distributed model predictive control scheme
复制标题
智能配电网分布式调压：基于共识的信息同步和分布式模型预测控制方案
DOI：
10.1016/j.ijepes.2019.03.059
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发表时间：
2019-10
影响因子：
5.2
通讯作者：
Shen Feifan
中科院分区：
文献类型：
--
作者：
Guo Yifei;Wu Qiuwei;Gao Houlei;Shen Feifan
提出了一种适用于逆变器型分布式发电（DG）渗透率高的智能配电网的分布式电压控制（DVC）方案，旨在优化DG单元和有载分接开关（OLTC）Transformer之间的协调，使电压调节在可行范围内。该方案包括两个重要部分：（1）分布式信息同步（DIS）框架和（2）基于分布式模型预测控制（DMPC）的电压控制方案。DIS框架建立在共识协议的基础上，以同步有关关键母线电压和潜在OLTC动作的特定信息。基于DMPC的电压控制方案，其中每个DG单元只与其直接邻居交换信息，并解决局部最优控制问题。设计了两种控制模式，以更好地处理不同的操作条件。在正常模式下，只有无功功率输出的DG单元进行优化，以减轻电压偏差。在校正模式下，DG机组的有功功率和无功功率输出均得到优化控制，以校正严重的电压偏差。为了减轻分布式发电和有载分接开关之间的相互影响，预测和考虑在每个单元的优化问题的有载分接开关的潜在行动。采用真实的中压配电网，在正常和大扰动条件下，验证了所提方案的控制性能。
This paper proposes a distributed voltage control (DVC) scheme for smart distribution networks with high penetration of inverter-based distributed generators (DGs), aiming to optimally coordinate DG units and on load tap changer (OLTC) transformer to regulate the voltages within the feasible range. The proposed scheme consists of two important parts: (1) distributed information synchronization (DIS) framework and (2) distributed model predictive control (DMPC)-based voltage control scheme. The DIS framework is established based on the consensus protocols to synchronize the specific information about the critical bus voltages and potential OLTC actions. The DMPC-based voltage control scheme is presented, in which each DG unit only exchanges information with its immediate neighbors and solves the local optimal control problem. Two control modes are designed to better deal with different operating conditions. In the normal mode, only the reactive power outputs of DG units are optimized to mitigate the voltage deviations. In the corrective mode, both of the active and reactive power outputs of DG units are optimally controlled to correct the severe voltage deviations. To mitigate the mutual interaction between the DGs and OLTC, the potential actions of OLTC are predicted and considered in the optimization problem of each units. The control performance of the proposed scheme was demonstrated using a real medium-voltage (MV) distribution network with two feeders under both normal and large-disturbance conditions.
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