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电网技术  2010 

多端直流系统接线和控制方式对暂态稳定性的影响

, PP. 87-91

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Abstract:

分析了多端直流系统的接线方式对暂态稳定性的影响。研究结果表明,与并联型接线方式相比,串联型接线方式的多端直流系统无功需求大、有功损耗多,使暂态过程中交流功率和直流功率的传输比较困难,不利于维持交直流系统的暂态稳定性。以并联型接线方式为例,研究了多端直流系统的控制方式对暂态稳定性的影响,指出了定电流控制和定电压控制可以在暂态期间减缓换流器交流母线电压的下降,有利于防止直流功率的降低,所以其保持暂态稳定性的能力要好于定功率控制和定熄弧角控制。

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