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工程科学与技术:2013,45(6):127-134
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交直流系统换流母线电压相互影响特性分析
(四川大学 电气信息学院)
Analysis on Voltage Interaction Characteristic Among Commutation Buses in AC/DC System
(School of Electrical Eng. and Info.,Sichuan Univ.)
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投稿时间:2013-06-17    修订日期:2013-10-16
中文摘要: 为了探讨交直流并联系统和多馈入系统换流母线电压间的相互影响关系以及相互作用因子的解析式,以增量形式的潮流方程为基础,通过分析异步电动机的阻抗特性、换流站的外特性方程以及各节点注入功率的变化量,给出了各节点电压间相互影响关系式及相互作用因子的求解方法。明确了异步电动机的等效阻抗是机端电压幅值的函数,节点电压间的相互影响关系与系统结构、扰动前运行状态以及直流系统控制方式有关,节点电压变化量之间的比值近似为一常数。最后通过具体的算例分析,说明了换流母线电压相互影响关系式的有效性和准确性。
Abstract:In order to study the voltage interaction and the multi-infeed interaction factor of the AC/DC parallel power system and multi-infeed HVDC, the solving method for the voltage interaction and multi-infeed interaction factor was proposed by analyzing the impedance characteristic of asynchronous motor, characteristic equations of converter stations and the increment of node power on the basis of the incremental form of power flow equation. It was pointed out that the equivalent impedance of asynchronous motor is a function of voltage, the voltage interaction relationship among nodes is related to the structure and operating state of the whole system and control mode of the DC system, and the ratio between increments of node voltage is a constant approximately. Finally, the effectiveness and accuracy of the voltage interaction formula were verified by a specific case.
文章编号:201300608     中图分类号:    文献标志码:
基金项目:国家自然科学基金资助项目(51037003);国家高技术研究发展计划资助项目(2011AA05A119);国家重点基础研究发展计划资助项目(2013CB228204)
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肖俊,李兴源.交直流系统换流母线电压相互影响特性分析[J].工程科学与技术,2013,45(6):127-134.
Xiao Jun,Li Xingyuan.Analysis on Voltage Interaction Characteristic Among Commutation Buses in AC/DC System[J].Advanced Engineering Sciences,2013,45(6):127-134.