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电网技术 2008, 32(19) 5-9 DOI:
ISSN: 1000-3673 CN: 11-2410/TM |
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| 特高压输电 |
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云广特高压直流输电系统中换流变压器铁心饱和不稳定分析 |
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杨小兵1，李兴源1，金小明2，郝巍3 |
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四川大学 电气信息学院，四川省 成都市 610065；2．中国南方电网技术研究中心，广东省 广州市 510620；3．云南省电力设计院，云南省 昆明市 650011 |
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摘要：
高压直流换流器和换流变压器的饱和特性之间的相互作用可以导致换流变压器铁心饱和不稳定现象的发生。文章研究了变压器铁心饱和不稳定的产生机理，给出了饱和稳定因子(saturation stability factor，SSF)的定义，提出了采用仿真方法求取换流器两侧谐波关系的矩阵参数和SSF。基于南方电网2010年数据，采用PSCAD/EMTDC对云广±800 kV特高压直流输电系统建立了详细的电磁暂态仿真模型，对三相接地故障激发的铁心饱和不稳定现象进行了仿真研究，验证了SSF判断法的有效性。 |
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关键词：
特高压直流(UHVDC)
铁心饱和不稳定
饱和稳定因子(SSF)
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Analysis on Converter Transformer Core Saturation Instability in UHVDC Power Transmission System from Yunnan to Guangdong |
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YANG Xiao-bing1，LI Xing-yuan1，JIN Xiao-ming2，HAO Wei31．四川大学 电气信息学院， |
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1．School of Electrical Engineering and Information，Sichuan University，Chengdu 610065，Sichuan Province，China；2．Technology Research Center of China Southern Power Grid，Guangzhou 510620，Guangdong Province，China； 3．Yunnan Electric Power Design Institute，Kunming 650011，Yunnan Province，China |
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Abstract:
The interaction of HVDC converter with the saturation characteristic of converter transformer can lead to core saturation instability of converter transformer. The authors research the generation mechanism of transformer core saturation instability, give the definition of saturation stability factor (SSF), and propose that by use of simulation method to obtain the matrix and SSF that describe the harmonic relation between both sides of converter. Based on the data of China Southern Power Grid in the year of 2010, a detailed electromagnetic transient simulation model for ±800 kV DC power transmission system from Yunnan to Guangdong is built by use of software package PSCAD/EMTDC, and the core saturation instability caused by three-phase earth fault is researched. Simulation results verify the effectiveness of SSF based judgment method. |
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Keywords:
ultra high voltage direct current(UHVDC)
core saturation instability
saturation stability factor(SSF)
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收稿日期 2008-01-28 修回日期 1900-01-01 网络版发布日期 |
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DOI: |
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基金项目:
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通讯作者: 杨小兵 |
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作者简介: |
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作者Email: yahui_1983@163.com |
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| 参考文献： |
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| 本刊中的类似文章 |
| 1．郭小江 卜广全 马世英 申洪 .西南水电送华东多送出多馈入直流系统稳定控制策略[J]. 电网技术, 2009,33(2): 56-61 |
| 2．李战鹰|李建华|夏道止.±800 kV特高压直流输电系统特征谐波分析[J]. 电网技术, 2006,30(24): 6-9 |
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