| 800 kV升压变压器工程设计研究 |
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| 引用本文： | 阮全荣,施围. 800 kV升压变压器工程设计研究[J]. 高压电器, 2006, 42(3): 161-163 |
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| 作者姓名： | 阮全荣 施围 |
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| 作者单位： | 西安交通大学电气工程学院,陕西,西安,710049;西安交通大学电气工程学院,陕西,西安,710049 |
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| 基金项目： | 国家自然科学基金(快速暂态过电压下金属氧化物避雷器频率特性研究)资助项目(50577051) |
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| 摘 要： | 由发电机出线直接升压到800 kV的变压器将在西北地区首次采用。该文将结合拉西瓦工程设计的要求,对一系列的技术问题加以研究与分析。根据工程设计和研究结果,变压器将采用三相组单相变压器,铁心采用三柱式,电压调压范围为800/!3-3×2.5%kV。由于GIS的断路器和隔离开关均设置分合闸电阻,使GIS产生的快速暂态过电压(VFTO)对变压器绝缘影响较小,以及我国800 kV系统过电压的限制水平,确定它的绝缘耐受能力。
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| 关 键 词： | 升压变压器 电压调压范围 快速暂态过电压 工程设计 |
| 文章编号： | 1001-1609（2006）03-0161-03 |
| 收稿时间： | 2006-02-07 |
| 修稿时间： | 2006-02-072006-03-30 |
Study on Engineering Design of 800 kV Step-up Transformer |
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| RUAN Quan-rong,SHI Wei. Study on Engineering Design of 800 kV Step-up Transformer[J]. High Voltage Apparatus, 2006, 42(3): 161-163 |
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| Authors: | RUAN Quan-rong SHI Wei |
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| Abstract: | Associated with Laxiwa hydropower station,the 800 kV step-up transformer,which directly connects with generator,shall be adopted first in northwest.Some technical considerations are given to solve the problems appeared in design.Besides,according to technical design and preliminary research results,the three single-phase transformers,with a three-column core and a voltage-regulation scope of 800/-3×2.5% kV,are chosen.As the pre-inserting resistance is used in CB and DS,the very fast transient overvoltage produced in GIS will make little influence to the transformer insulation.With the overvoltage level of 800 kV rated voltages in China,preferred rated insulation levels are given. |
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| Keywords: | step-up transformer voltage-regulation scope very fast transient overvoltage(VFTO) engineering design |
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