风电/光伏发电接入电网的电压稳定及控制分析

在世界能源需求大幅增长及环保意识提升的大环境下,风能与太阳能等可再生能源逐步成为主力进军电网领域。然而,这种能源的波动性与不确定性为电网稳压带来新难题。首先,本文深度解析了风电/光伏接入电网后的静态与动态电压稳定性,揭示出输出功率的不确定性、无功功率特性以及接入位置与容量对电压稳定的影响。其次,针对这些问题,细致讨论了风电及光伏发电接入电网的电压调控策略,包括风电机组的桨距角调整、无功功率调节,光伏电站的逆变器控制、最大功率点跟踪等方法,旨在提升电网电压稳定性,对实现绿色、低碳、可持续电力供应具有重大参考价值。

风电/光伏发电接入电网的电压稳定及控制分析

作为典型的新能源发电方式,风电/光伏发电系统出力带有间歇性和不确定性,接入电网时容易导致电网电压不稳。因此该文从静态和动态两个方面分析了风电/光伏发电接入电网的电压稳定能力,分别提出了风电和光伏发电入网的电压控制策略,以防止电网运行受到影响,为改善电力系统能源结构提供了技术支撑。

风电光伏发电接入电网的电压稳定及控制方法

随着可持续发展观念的引入,新能源的开发与使用越来越受到人们的重视。如今,电的已经成为人们生存和发展必不可少的能源,但是传统的发电方法费时费力,污染环境,所以就出现了风电/光伏发电。但是因为风电/光伏发电具有不稳定性,所以导致了风电/光伏发电接入电网的电压也不稳定。本文通过研究风电/光伏发电接入电网的电压不稳定的原因,提出了相应的应对策略及控制方法。

Cooperative Voltage Control Method by Residential PV Systems in Distribution System

Recently, the number of system interconnection of the renewable energy such as PV （photovoltaic） generation system and wind power generation system has been increasing drastically. A distribution system with the distributed generation must be operated keeping reliability of power supply and power quality. When high-capacity PV systems are interconnected to the distribution system, the system voltages may be deviated from the upper limit or lower limit of proper voltage in the distribution system. In this study, the authors propose a cooperative voltage control method of the distribution system by the power factor control of plural residential PV systems. In order to verify the validity of the proposal method, the numerical calculations are carried out by using an analytical model of distribution system which interconnected residential PV systems.