高比例电力电子电力系统过电压(三):直流故障下新能源暂时工频过电压机理OA北大核心CSTPCD
Overvoltage of the Power System Integrated With High Proportion of Power Electronics Equipment(Ⅲ):Mechanistic Analysis of Temporary Power Frequency Overvoltage Caused by DC Fault
在高比例新能源和大容量直流输电工程大量投运的背景下,电力系统过电压问题日渐凸显,不仅制约直流输电能力,而且可能引发新能源大规模脱网.在新能源占比较高时,与交流设备相比,新能源的工频过电压耐受能力更低,该文针对直流故障引发的送端新能源机端过电压问题进行机理分析.首先,建立直流闭锁和直流多次换相失败后闭锁故障状态下新能源及传统同步机经特高压直流外送系统的等效电路分析模型,基于矢量关系,解析推导直流故障下的暂时工频过电压最大值.然后,分析直流输电功率水…查看全部>>
With high share of renewable energy sources and large capacity of DC transmission projects,the problem of overvoltage has drawn more and more attention,which not only restricts the DC transmission capacity,but may also cause large-scale off-grid accidents of renewable energy sources.When the proportion of renewable energy is relatively high,compared with AC equipment,the renewable energy is more likely to face temporary power frequency overvoltage.This paper…查看全部>>
王姝彦;徐式蕴;孙华东;赵兵;易俊
中国电力科学研究院有限公司,北京市 海淀区 100192中国电力科学研究院有限公司,北京市 海淀区 100192中国电力科学研究院有限公司,北京市 海淀区 100192中国电力科学研究院有限公司,北京市 海淀区 100192中国电力科学研究院有限公司,北京市 海淀区 100192
动力与电气工程
暂时工频过电压直流闭锁直流换相失败后闭锁新能源电压最大值计算
temporary power frequency overvoltageDC bipolar blocking faultDC blocking after continuous commutation failurerenewable energy sourcecalculation of maximum voltage
《中国电机工程学报》 2024 (8)
2990-3001,中插5,13
国家自然科学基金项目(51977197,U2166601,51907179). Project Supported by National Natural Science Foundation of China(51977197,U2166601,51907179).
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