将故障限流功能集成到单相串联补偿器中

A. Bahrami, R. Faranda, H. Hafezi
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引用次数: 4

摘要

单相串联补偿器是配电系统运营商(DSO)在降低投资成本的同时提高低压电网的电能质量和负荷管理水平的一种非常有吸引力的电子设备。低压电网的一个主要问题是电压降。减轻电压降的主要方法是采用定制的电力系统器件作为不间断电源或采用固态转换开关。目前,动态电压调节器(DVC)或动态电压恢复器(DVR)也是补偿电压干扰的有效手段和经济可行的解决方案。与以往的解决方案相反,这些装置不仅可以有效地解决负载的电压扰动问题,而且可以通过限制下游故障电流来减轻下游故障对上游低压网络的干扰。一般来说,DVC或DVR设备限制下游故障电流的策略主要有两种:传统的无源策略和创新的有源策略。本文通过在MATLAB环境下的仿真结果,分析了将故障限流(FCL)功能集成到DVC器件中的有源方案的工作原理,并对其性能进行了比较。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Integration of fault current limiting function into a single-phase series compensator
Single-phase Series Compensators are very attractive electronic device for Distribution System Operator (DSO) in order to increase power quality level and load management in LV networks with reduced investment cost. One of the main important problem in LV network is due to voltage drop. The main approach to mitigate voltage drop, is employing custom power system devices as uninterruptible power supply or adapt solid-state transfer switch. Nowadays, also Dynamic Voltage Conditioners (DVC) or Dynamic Voltage Restorers (DVR) are effective apparatus and economically justified solution to compensate voltage disturbances. In contrary to the previous solutions, these devices can be efficiently used not only to solve the problem of voltage disturbance for the loads, but also to mitigate the disturbances of the upstream LV network due to a fault in the downstream by limiting the downstream fault current. Generally, there are two main strategies in order to limit downstream fault current in DVC or DVR devices: the conventional passive strategy and the innovative active one. This paper analyzes the operation principle of active solutions integrating a Fault Current Limiting (FCL) function into a DVC device, by simulation results in MATLAB environment and comparing their performance.
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