| PLC控制的船舶电站准同期并网合闸控制 |
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| 引用本文： | 于风卫,孙红英,张志德. PLC控制的船舶电站准同期并网合闸控制[J]. 电气应用, 2007, 26(4): 77-80 |
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| 作者姓名： | 于风卫 孙红英 张志德 |
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| 作者单位： | 青岛远洋船员学院机电系,266071;中国船级社青岛分社,266071 |
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| 摘 要： | 合闸控制是船舶电站自动准同期并网的难点与关键所在.PLC系统实时采集差频三角波电压,以PLC的平均扫描周期作为差频电压采样周期的计时单位,根据相似三角形原理对合闸超前时间进行计算,快速、准确地捕捉合闸时机,实现发电机的自动准同期并网操作.在实训室电站的实际运行试验表明,此合闸方法可靠且装置成本低.
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| 关 键 词： | 船舶电站 可编程序控制器 准同期并网 合闸时机 |
| 修稿时间： | 2006-12-19 |
Switch-On Control of Automatic Synchronization in Marine Power Station Based on PLC |
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| Yu Fengwei. Switch-On Control of Automatic Synchronization in Marine Power Station Based on PLC[J]. Electrotechnical Application, 2007, 26(4): 77-80 |
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| Authors: | Yu Fengwei |
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| Affiliation: | Qingdao Ocean Shipping Mariners College |
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| Abstract: | Aim at the difficulty of estimating the switch-on time in automatic quasi-synchronization operation, a method of switch-on control based on PLC is introduced. PLC uses its scan cycle time to time, samples difference frequency triangular wave voltage and grasps switch-on opportunity rapidly and accurately according to the principle of analogous similar triangles. Practice proves this method is feasible. Moreover, it has the characteristics of low costs and high reliability. |
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| Keywords: | marine power station programmable logical controller quasi-synchronization operation switch-on |
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