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基于电能路由器的被转供线路“低电压”治理方法

Power Router-based Low Node Voltage Mitigation Method for Transferred Lines

  • 摘要: 由于农村配网的网络基础薄弱、供电半径长、线路容量小,因此常出现线路末端电压较低的现象,而在故障发生时,对故障线路的转供将加重这一局面,导致被转供线路末端的“低电压”问题。针对此问题,文章总结了网络改造、安装调压器和安装无功补偿设备等传统方法的特点,提出了基于电能路由器的被转供线路“低电压”治理转供方法,通过电能路由器主动控制端口电压和无功功率提升线路电压,并与其他联络线路合环运行对故障线路进行多端供电,较其他方案具有更低的电压降落与网络损耗,达到农村配网“低电压”问题的经济高效治理,算例验证了该方法的有效性。

     

    Abstract: Rural distribution networks often suffer from low node voltage issues at line ends due to weak grid infrastructure, long feeder length, and limited line capacity. These problems are further aggravated due to the load transfer operations for fault area, which will exacerbate voltage drops on the transferred lines. To address this issue, this paper first reviews conventional mitigation approaches, including network reinforcement, voltage regulator installation, and reactive power compensation. Subsequently, a power router-based solution is proposed to actively regulate terminal voltage and reactive power, thereby improving line voltages. Furthermore, the proposed method enables multi-terminal power supply through closed-loop operation with interconnected lines, significantly reducing voltage drop and power losses compared to traditional methods. Case studies demonstrate that this approach provides an economical and efficient solution for low node voltage mitigation in rural distribution networks.

     

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