摘要
大容量负荷的突然投入对黑启动初期小系统的电压影响十分巨大。文中利用叠加原理,首先将黑启动过程中对称三相负荷的突然投入问题分解为2个独立的简单问题,然后利用考虑转子阻尼绕组的同步发电机模型推导出突然投入负荷后起始电压幅值与电机、线路参数、负荷类型的关系式并对其进行了分析、讨论,根据关系式得出黑启动过程中在一定范围内适当提高负荷功率因数及综合阻抗的负荷投入原则。实时数字仿真器(RTDS)仿真及现场试验结果均证实了文中结论的正确性及有效性。
Black startup with large amount of load has enormous impact on system voltage. An approach based on superpositioh is used to decompose sudden three-phase symmetrical load resumption in black startup into two simpler independent problems. Synchronous generator model including damping winding is then used to derive the relationship between voltage magnitude and machine, circuit parameters, and load types. After further analyzing the relationship derived, a general load resumption principle is proposed. It increases the power factor and composite impedance of the load in a certain range. Simulation results using RTDS and filed test measurement verify the correctness and effectiveness of the proposed methods.
出处
《电力系统自动化》
EI
CSCD
北大核心
2008年第24期11-15,51,共6页
Automation of Electric Power Systems
关键词
黑启动
负荷恢复
电压降落
black startup
load resuming
voltage fall-off
