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直接潮流控制器——电力传输中的新概念

Direct Power Flow Controller—A New Concept in Power Transmission

语言:

中文摘要

本文提出了一种基于单级AC-AC变换器的直接潮流控制器(DPFC)新概念,通过调节输出补偿电压的幅值和相位,将其串联接入电网,从而实现对电网节点电压的精确控制,进而有效调节电网中的有功和无功功率流动。

English Abstract

For power transmission in grid, a new concept of direct power flow controller (DPFC) was proposed based on single-stage ac–ac converter with controllable phase and amplitude. By connecting its regulated output compensation voltage with grid in series, DPFC is able to regulate the amplitude and phase angle of grid node voltage, and thus can effectively control active and reactive power flow in grid...
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SunView 深度解读

DPFC技术通过串联补偿调节潮流,与阳光电源的构网型(Grid-forming)技术理念有异曲同工之妙。在当前高比例可再生能源接入导致的电网波动背景下,该技术可提升电网灵活性。对于阳光电源而言,虽然目前核心产品集中在逆变器与储能PCS,但DPFC的控制逻辑可借鉴用于PowerTitan等大型储能系统的并网控制策略,特别是在弱电网环境下,通过模拟DPFC的电压调节特性,可进一步增强储能系统对电网电压的支撑能力,提升系统并网的稳定性与调节精度。