调相机无功调节在弱电网侧应用分析
|
摘要
随着特高压直流远距离输电技术的推广应用,"强直弱交"现象日益明显,交流电网短路容量降低,电网抗无功冲击和电压稳定问题日益突出,对换流站稳定运行产生很大影响,增加了换相失败概率。针对调相机的动态无功补偿、提高系统短路容量等特性,国家电网公司对调相机的应用提出了新的要求。对调相机应用背景、调相机无功调节原理、控制功能策略及在换流站无功传输和电压稳定方面优越性等进行分析,提出目前调相机应用存在的缺陷,以便后期研究不断完善。
As the UHVDC transmission technology becoming widely used,the phenomenon of "strong DC and Weak AC" is increasingly apparent.Reducing of AC power grid short-circuit capacity,impact resistance of power grid reactive power and voltage stability problem is increasingly outstanding.This has a great effect on the steady operation of the converter,increasing the chance of commutation failure.For the characteristics of the phase modifier,such as dynamic reactive compenstion and improving the short circuit capacity of system,new requirements are put forword for the application of the phase modifier by State Grid Corporation of China.In this paper,the principle of reactive power adjustment,the control function strategy,the superiority of reactive power transmission and voltage stability of the dynamo condenser in the converter station are reviewed.And the defects of the dynamo condenser are pointed out,so as to improve the research process in the later period.
As the UHVDC transmission technology becoming widely used,the phenomenon of "strong DC and Weak AC" is increasingly apparent.Reducing of AC power grid short-circuit capacity,impact resistance of power grid reactive power and voltage stability problem is increasingly outstanding.This has a great effect on the steady operation of the converter,increasing the chance of commutation failure.For the characteristics of the phase modifier,such as dynamic reactive compenstion and improving the short circuit capacity of system,new requirements are put forword for the application of the phase modifier by State Grid Corporation of China.In this paper,the principle of reactive power adjustment,the control function strategy,the superiority of reactive power transmission and voltage stability of the dynamo condenser in the converter station are reviewed.And the defects of the dynamo condenser are pointed out,so as to improve the research process in the later period.
引文
[1]赵畹君.高压直流输电工程技术[M].北京:中国电力出版社,2011.
[2]汤蕴缪,罗应立,梁艳萍,等.电机学[M].北京:机械工业出版社,2008.
[3]倪以信,陈寿孙,张宝霖,等.动态电力系统的理论和分析[M].北京:清华大学出版社,2005.
[2]汤蕴缪,罗应立,梁艳萍,等.电机学[M].北京:机械工业出版社,2008.
[3]倪以信,陈寿孙,张宝霖,等.动态电力系统的理论和分析[M].北京:清华大学出版社,2005.