| 农村电网配电变压器无触点有载自动调容技术研究 |
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| 引用本文： | 杨婷婷,赵玉林,江志明,郑治华.农村电网配电变压器无触点有载自动调容技术研究[J].农机化研究,2016(10):239-244. |
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| 作者姓名： | 杨婷婷 赵玉林 江志明 郑治华 |
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| 作者单位： | 东北农业大学电气与信息学院,哈尔滨,150030 |
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| 基金项目： | 黑龙江省教育厅科技成果产业化前期研发培育项目，黑龙江省教育厅科学技术研究项目 |
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| 摘 要： | 农村电网负荷波动大,变压器负载率不能在合理的范围内,因此配电变压器根据负荷的变化自动改变容量具有重要意义。现有的调容开关均为机械有触点式,不适合频繁动作,可靠性低。为此,提出了采用复合开关作为调容开关的配电变压器有载自动调容方案,该复合开关由电力电子开关与机械式有触点开关并联组成。针对变容过程中出现的过压、过流及其限制问题,利用Mat Lab/SIMULINK仿真软件对有载自动调容变压器调容过程进行仿真研究,结果表明:调容开关调容时会产生过电压与过电流,通过在调容开关两端并联合适大小的缓冲电阻,可以有效地抑制该过电压与过电流。
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| 关 键 词： | 农村电网 有载自动调容 配电变压器 负荷开关 MatLab/SIMULINK仿真 |
Study on the Technology of Non Contact on-load Automatic Capacity Regulating of the Distribution Transformer in Rural Power Network |
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| Abstract: | The load fluctuation in rural areas is high , and the load rate of transformer can not be in reasonable range .So the power distribution transformer according to the change of the load change automatically has important significance .The existing capacity regulating switch is a mechanical contact type , which is not suitable for frequent operation and low relia-bility .Therefor scheme of on-load automation capacity regulating which composite switch was used as capacity regulating switch was put forward .The composite switch was composed of a electronic switch and a mechanical type of contact switch .The overvoltage and overcurrent in the process of capacity regulating and its limitation are studied .Meanwhile ,the MATLAB/SIMULINK simulation software was used to simulate the on-load automatic capacity regulating transformer .The results showed that overvoltage and overcurrent would be generated when the capacity regulating switch was changed .And the overvoltage and overcurrent can be effectively suppressed by the appropriate size of butter resistance at the ends of the switch . |
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| Keywords: | rural power network on-load automatic capacity regulation distribution transformer composite switch MatLab/SIMULINK simulation |
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