低压脱扣器电子电路电压暂降敏感特性试验研究

发布时间：2018-06-12 14:24

本文选题：低压脱扣器 + 电子电路　；参考：《电力自动化设备》2017年02期

【摘要】：在对低压脱扣器电磁结构的工作状态进行简要分析的基础上,制定试验方案,建立基于自主研制的电压暂降发生仪的试验平台。以220 V低压脱扣器为对象,进行了电子电路电压暂降敏感特性试验,获取低压脱扣器电子电路在输入不同暂降信号时的输出电压波形。结合低压脱扣器的电压耐受曲线,将电子电路的工作状态划分为幅值较小、幅值较大、持续时间较短、持续时间较长、中间的幅值和持续时间、正常工作6种模态。分析了每种模态下电子电路的输入和输出电压实测波形及其对低压脱扣器动作情况的影响,结果表明:电子电路的输出电压波形与输入电压暂降信号的幅值和持续时间呈现规律的关联关系,输出电压波形具有明显的分阶段特征,决定了低压脱扣器的动作特性。
[Abstract]:Based on the brief analysis of the working state of the electromagnetic structure of the low voltage release, the test scheme is established and the test platform of the voltage sag generator is established. Taking 220V low voltage release as an object, the voltage sag sensitivity test of electronic circuit is carried out, and the output voltage waveform of low voltage release electronic circuit is obtained when different sag signals are inputted. Combined with the voltage tolerance curve of the low voltage release, the working state of the electronic circuit is divided into six modes: smaller amplitude, larger amplitude, shorter duration, longer duration, intermediate amplitude and duration, and normal operation. The measured waveforms of input and output voltages of electronic circuits in each mode and their effects on the operation of low-voltage release devices are analyzed. The results show that the output voltage waveform of the electronic circuit is related to the amplitude and duration of the input voltage sag signal, and the output voltage waveform has obvious characteristics in stages, which determines the action characteristics of the low-voltage release.
【作者单位】：华南理工大学电力学院广东省绿色能源技术重点实验室;
【基金】：广东省自然科学基金资助项目(2016A030313476)~~
【分类号】：TM561

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