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高渗透率分布式光伏接入的配电网台区防逆流调控技术

Anti-backflow Regulation Technology for Distribution Network Station Area with High Permeability Distributed Photovoltaic Access

  • 摘要: 光伏出力与用电负荷的不匹配有可能会加重配电网台区电压越限和反向重过载的风险。为此,开发了一种基于数据驱动的高渗透率分布式光伏接入下配电网台区防逆流控制技术,基于TiDE算法实现了台区用电负荷的实时预测,并提出了4种基于历史负荷数据和预测负荷数据的配电网台区防逆流控制策略。此外,还基于核密度函数定义了风险因子作为评估配电网台区逆流风险的可靠指标。最后,基于北京怀柔某屋顶光伏电站项目的仿真测试验证了算法的有效性,算法在降低配电网台区逆流风险的同时增大分布式光伏的利用率,对高渗透率分布式光伏接入下的配电网的安全稳定运行具有参考意义。

     

    Abstract: The mismatch between PV output and power load may increase the risk of voltage overrun and reverse overload in the distribution network area. Based on this, this study developed a data-driven anti-backflow control technology for distribution network stations under high-permeability distributed photovoltaic access, realized the real-time prediction of power load in the distribution network based on the TiDE algorithm, and proposed four anti-backflow control strategies for distribution network stations based on historical load data and predicted load data. In addition, this study also defines the risk factor based on the kernel density function as a reliable indicator to evaluate the counterflow risk of the distribution network area. Finally, based on the simulation test of a rooftop photovoltaic power station project in Huairou, Beijing, the effectiveness of the algorithm is verified, which can reduce the risk of backflow in the distribution network area and increase the utilization rate of distributed photovoltaic, which has reference significance for the safe and stable operation of the distribution network under the access of distributed photovoltaic with high permeability.

     

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