经同步调相机补偿的HVDC电压稳定控制策略研究
党睿
(南京理工大学 自动化学院,江苏 南京 210094)
摘 要:要实现高压直流输电线路的安全稳定运行需要为其提供充足的无功功率。提出将同步调相机配置在高压直流输电线路换流站中,对其进行无功补偿以提升扰动或者故障时高压直流输电线路的逆变侧交流电压。基于PSCAD/EMTDC软件搭建了同步调相机与高压直流输电线路模型,对同步调相机的无功补偿能力进行仿真分析,并针对同步调相机补偿过程中出现的电压波动不能立即平稳的问题,提出一种针对同步调相机的励磁机的优化控制策略,实现了电压的快速稳定。
关键词:高压直流输电;同步调相机;扰动;电压稳定控制
中图分类号:TM714.3 文献标识码:A 文章编号:1007-3175(2018)07-0016-06
Research on High Voltage Direct Current Voltage Stability Control Strategy
Compensated by Synchronous Compensator
DANG Rui
(School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China)
Abstract: To achieve the safe and stable operation of high voltage direct current(HVDC) transmission lines, it is necessary to provide sufficient reactive power for them. This paper proposed that the synchronous compensator was put into the converter station of HVDC transmission lineand reactive power compensation was used to improve the AC voltage at inverter side of the HVDC transmission line when the disturbance or fault occurred.The synchronous compensator and HVDC transmission line modelswere built based on PSCAD/EMTDC,and the reactive power compensation capability of synchronous camera was carried out simulated analysis.Aiming at the problem that the voltage fluctuation in the compensation process of synchronous compensator can’t be immediately smooth, an optimal control strategy of synchronous generator is proposed to realize the fast and stable voltage.
Key words: high voltage direct current transmission; synchronous compensator (SC); disturbances; voltage stability control
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