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电网技术  2007 

考虑全电流的高压侧电压控制方法

, PP. 50-53

Keywords: 电力系统,电压稳定,电压控制,自动电压调节器,高压侧电压控制,励磁系统

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Abstract:

以常规的发电机励磁系统为基础,通过引入补偿控制的方式,提出了一种全电流高压侧电压控制方法,并描述了它的工作原理、特性及优点。与常规的励磁系统相比较,先进的高压侧电压控制能够控制发电机高压侧电压为目标设定值,维持传输网络良好的电压分布及较高的电压水平。与已有的先进的高压侧电压控制不同,文中所提出的方法不仅考虑发动机的无功电流,而且将有功电流的影响也引入计算方法中,从而在理论上更加严谨,也更符合电力系统的实际情况。通过数值仿真分析证明了这种方法可以明显改善高压侧电压目标设定值的准确性,提高了电压稳定性,而且无需额外的投资及高压侧信号,易于实现且经济。

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