A. Kulmala, A. Mutanen, Antti Koto, S. Repo, P. Järventausta
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引用次数: 30
摘要
在弱电配电网中,分布式发电量通常受到电压上升效应的限制。电压上升可以用无源方法来缓解,例如增加导体尺寸,但是,这是相当昂贵的。也可以采用主动电压控制方法来降低电网的最高电压。在许多情况下,主动电压控制可以大大增加可连接DG的容量,从而显著降低连接成本。本文介绍了一种有源电压控制算法的工作原理。该算法对变电站电压和DG无功功率进行控制,并根据全网状态确定其控制动作。该算法以Matlab程序的形式实现,并采用OPC Data Access实现Matlab与SCADA之间的通信。利用实时数字模拟器(RTDS)验证了算法的正确性。同样的算法也可以作为配电管理系统(DMS)的一部分来实现。
RTDS verification of a coordinated voltage control implementation for distribution networks with distributed generation
In weak distribution networks the amount of distributed generation (DG) is usually limited by the voltage rise effect. The voltage rise can be mitigated using passive methods such as increasing the conductor size which can, however, be quite expensive. Also active voltage control methods can be used to reduce the maximum voltage in the network. In many cases active voltage control can increase the capacity of connectable DG substantially which can lead to significantly lower connection costs. In this paper, operation of an active voltage control algorithm is viewed. The algorithm controls the substation voltage and DG reactive power and determines its control actions based on the state of the whole network. The algorithm is implemented as a Matlab program and communication between Matlab and SCADA is realized using OPC Data Access. Correct operation of the algorithm is verified using Real Time Digital Simulator (RTDS). The same algorithm could also be implemented as a part of the distribution management system (DMS).