一种基于柔直技术的低电压治理方法

A Low-Voltage Regulation Method Based on Flexible DC Technology

根据配电网低电压特性,基于主网的柔性直流输电思路,设计了一套多端直流低电压治理装置(MVR)。利用交直流变换,重点针对配电网中供电半径过长、线径过细的台区,在网改工程改造完成的前期,先一步解决台区末端用户用电困难的问题。同时根据仿真计算,采用本装置能有效降低台区损耗,提升台区传输容量。

According to low-voltage characteristics of distribution network and the flexible DC transmission idea of the main network,this paper is based on the idea of flexible DC transmission in main network to design a multiterminal DC low-voltage regulator(MVR). And then,using AC-DC transformation and focusing on the power distribution area with too long a radius of power supply and too thin a wire diameter in the distribution network,the paper solves the problem of difficult power supply for the end users of the power distribution area in the early stage of the completion of the network reform project. At the same time,simulation calculation is conducted to show that the adoption of this device can effectively reduce line loss in the power distribution area,and improve the transmission capacity of the distribution area.