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

摘要：根據(jù)開口式霍爾電流傳感器的原理、特點(diǎn)及安裝方式，分析開口式霍爾電流傳感器在工廠改造配電系統(tǒng)中的應(yīng)用，為用戶快速實(shí)現(xiàn)直流系統(tǒng)智能配電提供解決方案。

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.

關(guān)鍵詞：開口式霍爾電流傳感器;直流配電系統(tǒng);工作原理;應(yīng)用

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

0概述Overview

    直流配電系統(tǒng)通常由高頻開關(guān)電源和蓄電池組成，用于為直流系統(tǒng)中控制、信號、繼電保護(hù)及自動(dòng)裝置、事故照明等提供可靠的直流電源，對其供電的可靠性、穩(wěn)定性以及供電質(zhì)量均有著很高的要求。因此在該俄羅斯直流系統(tǒng)中，我們搭配的直流霍爾配電能表使用。直流系統(tǒng)改造時(shí)不停電，工程改造難度大，采用傳統(tǒng)的閉口霍爾電流傳感器或者分流器也無法解決，因此可采用開口式霍爾電流傳感器來解決改造項(xiàng)目中直流電流計(jì)量問題，確保改造過程不停電且安全運(yùn)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產(chǎn)品設(shè)計(jì) Product Design   

1.1結(jié)構(gòu)特點(diǎn)Structural features     

開口式霍爾電流傳感器在傳統(tǒng)閉口霍爾電流傳感器的基礎(chǔ)上進(jìn)行研發(fā)，結(jié)構(gòu)新穎，外形美觀大方。整體由外殼、鐵芯、采樣線路板及固定樹脂構(gòu)成，外殼材料采用PC/ABS合金，具有耐高溫、機(jī)械強(qiáng)度高、環(huán)保等特點(diǎn)；鐵芯采用有取向冷扎硅鋼片，具有性能穩(wěn)定，機(jī)械強(qiáng)度高，導(dǎo)磁率較高等特點(diǎn)；線路板與外部接線采用綠色可插拔端子，現(xiàn)場接線方便、可靠。具體結(jié)構(gòu)如圖1、2所示，產(chǎn)品外觀采用分體式設(shè)計(jì)，圖1為圓孔型，適合直流系統(tǒng)一次母線為電纜時(shí)穿過。，圖2方孔型，適合直流系統(tǒng)一次母線為銅排時(shí)穿過。根據(jù)一次電流的測量范圍及穿孔要求，可選擇相應(yīng)的產(chǎn)品類型。該系列傳感器電流可測范圍為20A～20000A，主要外形有ф20、ф40、ф60、64*16、85*27、104*36、140*50等多種規(guī)格，如圖3所示，適用于不同應(yīng)用場合。

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