开口式霍尔电流传感器在俄罗斯某工厂改造配电系统中的应用

 Application of open type Hall current sensor in power distribution system modification in a Russian factory

摘要：根据开口式霍尔电流传感器的原理、特点及安装方式，分析开口式霍尔电流传感器在工厂改造配电系统中的应用，为用户快速实现直流系统智能配电提供解决方案。

Abstract: According to the principle, characteristics and installation mode of the open-type Hall current sensor, the application of the open-type Hall current sensor in the transformation and distribution system of the factory is analyzed, so as to provide a solution for users to realize the intelligent distribution of DC system quickly.

关键词：开口式霍尔电流传感器;直流配电系统;工作原理;应用

Key words: open type Hall current sensor;DC distribution system;working principle application

0概述Overview

    直流配电系统通常由高频开关电源和蓄电池组成，用于为直流系统中控制、信号、继电保护及自动装置、事故照明等提供可靠的直流电源，对其供电的可靠性、稳定性以及供电质量均有着很高的要求。因此在该俄罗斯直流系统中，我们搭配的直流霍尔配电能表使用。直流系统改造时不停电，工程改造难度大，采用传统的闭口霍尔电流传感器或者分流器也无法解决，因此可采用开口式霍尔电流传感器来解决改造项目中直流电流计量问题，确保改造过程不停电且安全运行。

DC distribution system is usually composed of high frequency switching power supply and battery, which is used to provide reliable DC power supply for control, signal, relay protection and automatic devices, accident lighting and so on in DC system. It has high requirements for the reliability, stability and quality of power supply. Therefore, in the Russian DC system, we matched the DC Hall distribution meter used. During the transformation of DC system, there is no power outage, and the engineering transformation is difficult, and the traditional closed Hall current sensor or shunt can not solve the problem. Therefore, the open Hall current sensor can be used to solve the DC current measurement problem in the transformation project, so as to ensure the safe operation of the transformation process without power outage.

1产品设计 Product Design   

1.1结构特点Structural features     

开口式霍尔电流传感器在传统闭口霍尔电流传感器的基础上进行研发，结构新颖，外形美观大方。整体由外壳、铁芯、采样线路板及固定树脂构成，外壳材料采用PC/ABS合金，具有耐高温、机械强度高、环保等特点；铁芯采用有取向冷扎硅钢片，具有性能稳定，机械强度高，导磁率较高等特点；线路板与外部接线采用绿色可插拔端子，现场接线方便、可靠。具体结构如图1、2所示，产品外观采用分体式设计，图1为圆孔型，适合直流系统一次母线为电缆时穿过。，图2方孔型，适合直流系统一次母线为铜排时穿过。根据一次电流的测量范围及穿孔要求，可选择相应的产品类型。该系列传感器电流可测范围为20A～20000A，主要外形有ф20、ф40、ф60、64*16、85*27、104*36、140*50等多种规格，如图3所示，适用于不同应用场合。

Open-mouth Hall current sensor is developed on the basis of traditional closed-mouth Hall current sensor. It has novel structure and beautiful appearance. The whole is composed of shell, iron core, sampling circuit board and fixed resin. The shell material is made of PC/ABS alloy, which has the characteristics of high temperature resistance, high mechanical strength and environmental protection. The core is made of oriented cold bonded silicon steel sheet, which has the characteristics of stable performance, high mechanical strength and extremely high magnetic conductivity. Green pluggable terminal is used for circuit board and external wiring, which is convenient and reliable for on-site wiring. The specific structure is shown in Figure 1 and 2. The appearance of the product adopts split design. Figure 1 is a round pass, which is suitable for passing through the DC system when the primary bus is a cable. , Fig. 2 square pass, suitable for the DC system when the primary bus is copper bar. According to the measurement range of primary current and perforation requirements, the corresponding product type can be selected. This series of sensors can measure the current range of 20A ~ 20000A, the main shape of the phi 20, 40, 60, 64*16, 85*27, 104*36, 140*50 and other specifications, as shown in Figure 3, suitable for different applications.

Fig. 1 circular pass pattern