摘要
由于电力电子装置、非线性负载及不平衡负载的存在,电网中产生较多的谐波电流、负序电流和无功电流,导致配电网的电能质量恶化,严重威胁电网和电气设备安全运行与正常使用。因此,对电能质量的治理显得尤为重要。详细阐述配电网中存在的电能质量问题,分别介绍无功功率、负载不平衡、谐波的产生及其危害。以D-STATCOM和APF两类广泛使用的DFACTS技术为例,介绍其发展、研究和应用情况。
Due to the existence of power electronic devices, nonlinear and unbalanced loads, more harmonic currents, negative sequence currents and reactive currents are generated in the power grid, which lead to the deterioration of power quality of distribution network and seriously threaten the safe and normal operation of power grid and electrical equipment. Therefore, it is particularly important to control the power quality. In this paper, the problems of power quality in distribution network are described in detail. Reactive power, load unbalance, harmonic generation and its harm are introduced respectively. Taking D-STATCOM and APF, which are two kinds of widely used DFACTS technology, as an example, this paper introduces its development as well as the research and application of it.
出处
《智能电网》
2016年第11期1136-1140,共5页
Smart Grid
关键词
电能质量
无功补偿
负载不平衡
谐波治理
有源电力滤波器
静止同步补偿器
power quality
reactive power compensation
load unbalance
harmonic control
active power filter
static synchronous compensator
