考虑节点负荷波动的直流电网暂态电压稳定性自动控制方法  

Automatic Control Method for Transient Voltage Stability of DC Grid Considering Node Load Fluctuation

作　　者：卢志财[1] LU Zhi-cai(Practice Teaching Center,Minnan University of Science and Technology,Shishi 362700,China)

机构地区：[1]闽南理工学院实践教学中心,福建石狮362700

出　　处：《辽东学院学报（自然科学版）》2022年第4期279-285,共7页Journal of Eastern Liaoning University:Natural Science Edition

摘　　要：直流电网暂态电压稳定性控制能够保证电网的可靠性,为此设计了一个考虑节点负荷波动的直流电网暂态电压稳定性自动控制方法。建立直流输电系统方程,对暂态电压进行分区,分析暂态电压稳定的关键影响因素,获得特征量。在此基础上,分析直流配电网的惯性,对薄弱节点进行标准化处理,解析受端电压稳定判据,制定模糊规则,实现直流电网暂态电压稳定性自动控制。结果表明,在没有干扰与有干扰的情况下,所提出的自动控制方法都能够对电流与电压进行控制,保证直流电网暂态电压的稳定性。Transient voltage stability control of DC power grid can ensure the reliability of power grid. In this paper, the author designs an automatic control method for transient voltage stability of DC power grid considering node load fluctuation. The DC transmission system equation is established, the transient voltage is partitioned, the key influencing factors of transient voltage stability are analyzed, and the characteristic quantities are obtained. On this basis, the inertia of the DC distribution network is analyzed, the weak nodes are standardized, the voltage stability criterion of the receiving end is analyzed, and the fuzzy rules are formulated to realize the automatic control of the transient voltage stability of the DC grid. The results show that the proposed automatic control method can control the current and voltage without or with interference, and ensure the transient voltage stability of the DC grid.

关 键 词：节点负荷波动 直流电网 暂态电压 稳定性 自动控制 

分 类 号：TK89[动力工程及工程热物理—流体机械及工程]