电气技术  2020, Vol. 21 Issue (11): 50-56    DOI:
研究与开发 |
电能质量监测系统的设计实现和车载应用
宋杰
吉隆坡中车维保有限公司,马来西亚 吉隆坡 50470
Design and implementation of power quality monitoring system and vehicle application
Song Jie
CRRC Kuala Lumpur Maintenance Sdn. Bhd.,Kuala Lumpur,Malaysia 50470
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摘要 针对城轨车辆电压电流功率等监测的应用需求,本文设计了一种由嵌入式电能质量检测设备和数据处理模块组成的电能质量监测系统。检测设备集成了变压整流模块和霍尔电流传感器,实现交流电压和电流的实时检测;检测设备可采用液晶显示屏模块实时显示电压、电流、功率等参数;检测设备通过通用异步收发传输器和安全数字存储卡分别实现测量数据的实时输出和实时记录。本文给出了基于离散傅里叶变换算法的谐波分析理论推导。结合对检测设备输出的三相电压数据,以空调柜三相电压监控继电器模块测试为例,本文介绍了基于离散傅里叶变换算法的谐波检测方法。应用案例表明,通过定制化设计,该电能质量监测系统满足了应用需求,可在电压不高于三相400V的交流检测环境中应用。
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宋杰
关键词 电能质量检测嵌入式系统交流电压检测电流传感器离散傅里叶变换    
Abstract:For the application requirements of voltage, current and power monitoring in Urban rail vehicles, the paper design a power quality monitoring system which consists of embedded power quality detection device and data processing module. The power quality detection device integrates the module of transformer and rectifier and the module of Hall current sensor to achieve real-time detection of AC voltage and current; the detection device is able to display parameters such as voltage, current and power in real time by the LCD display module; the detection device realizes real-time output and real-time recording of measurement data through the UART and SD memory card respectively. The paper gives the theoretical derivation of harmonic analysis based on DFT algorithm. Combined with the three-phase voltage measurement data of the device, taking the test of the three-phase voltage monitoring relay module in the air-conditioning cabinet as an example, the paper introduces the harmonic detection method based on DFT. The application case shows that the power quality monitoring system has met application requirements and can be applied in AC detection environment with voltage not higher than three-phase 400V by customized design.
Key wordspower quality detection    embedded system    AC voltage detection    current sensor    discrete Fourier transform (DFT)   
收稿日期: 2020-04-25     
作者简介: 宋杰(1982-),男,湖南省株洲市人,硕士,主要研究方向为嵌入式系统、车载网络及控制系统、工业物联网、网络安全、维保技术。
引用本文:   
宋杰. 电能质量监测系统的设计实现和车载应用[J]. 电气技术, 2020, 21(11): 50-56. Song Jie. Design and implementation of power quality monitoring system and vehicle application. Electrical Engineering, 2020, 21(11): 50-56.
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