【摘要】 针对现有配电网有源电压消弧方法未充分考虑线路电压降落以及分布式电源接入的影响，发生单相接地故障时无法保证故障点电压为0，存在无法可靠消弧的问题，提出了一种考虑分布式电源接入的配电网有源电压消弧技术。首先，在接入分布式电源的基础上，考虑线路的电压降落，推导消弧电压理论计算公式，提出改进有源电压消弧方法。其次，提出一种基于馈线终端设备(feeder terminal unit, FTU)量测数据的数据驱动测距方法，能够在故障发生后准确计算出故障距离，为消弧线圈的控制提供数据。最后，通过仿真证明所提方法相较于传统有源电压消弧方法，能够更好地控制故障点电压为0。更多还原

【Abstract】 Existing active voltage arc suppression technologies for distribution networks often fail to fully consider the effects of line voltage drop and distributed generation(DG) integration. As a result, during single-phase-to-ground faults, these methods cannot guarantee zero voltage at the fault point, resulting in unreliable arc suppression. To address this issue, this paper proposes a new active voltage arc suppression technology for distribution networks with DG integration. First, based on the access of DG and considering line voltage drop, the theoretical calculation formula for the arc suppression voltage is derived, and an improved active voltage arc suppression method is proposed. Second, a data-driven distance measurement method based on feeder terminal unit(FTU) measurement data is proposed, which can calculate the fault distance after a fault occurs, providing accurate data for controlling the arc suppression coil. Finally, simulation results show that the proposed method is more effective in controlling the fault voltage to zero than traditional active voltage arc suppression techniques.更多还原