安科瑞 繆凱倫

摘(zhai)要：本文介紹了安科瑞DJSF1352-RN直(zhi)流(liu)電表在尼日利亞小型光(guang)伏發電設(she)施直(zhi)流(liu)側的(de)應用。主要用于(yu)光(guang)伏系(xi)統中的(de)電流(liu)的(de)計量，通(tong)過(guo)霍爾對電路(lu)系(xi)統進行計量、通(tong)訊和控(kong)制等。

??Abstract: This paper introduces the application of Acrel DJSF1352-RN DC energy meter in the DC side of a photovoltaic system in Nigeria. It is mainly used to measure the DC current in the photovoltaic system, and cooperate with hall current sensor to measure, communicate and control the circuit system.

??1.項目概述：Project Overview

??該公(gong)司位于尼日利亞，是一家新能源公(gong)司。主要(yao)在(zai)非洲從事光(guang)伏發電項目。客戶要(yao)使用直(zhi)流電表(biao)，用于光(guang)伏系統中(zhong)直(zhi)流側的監測計(ji)量。

??The company is located in Nigeria and is a new energy company. Mainly engaged in photovoltaic power generation projects in Africa. The customer wants to use DC meters and hall sensors for monitor current and voltage at the DC side of photovoltaic system.

??2.DJSF1352-RN介紹 DJSF1352-RN DC Energy Meters

??DJSF1352-RN導(dao)軌(gui)式(shi)直流(liu)電(dian)能(neng)(neng)(neng)表(biao)，主要針(zhen)對電(dian)信基站(zhan)、直流(liu)充電(dian)樁、太陽能(neng)(neng)(neng)光伏等(deng)應用場合而設計，該(gai)系列儀(yi)表(biao)可(ke)測(ce)量(liang)(liang)直流(liu)系統中的電(dian)壓、電(dian)流(liu)、功率以及正反向電(dian)能(neng)(neng)(neng)等(deng)。在實際(ji)使(shi)用現場，即可(ke)計量(liang)(liang)總電(dian)能(neng)(neng)(neng)，又可(ke)計量(liang)(liang)規定(ding)時間段內的電(dian)能(neng)(neng)(neng)。檢測(ce)的結果既可(ke)用于本地顯示，又能(neng)(neng)(neng)與工控(kong)設備(bei)、計算機(ji)連(lian)接，組成測(ce)控(kong)系統。

??儀(yi)表可(ke)具有(you)紅外通(tong)(tong)訊(xun)(xun)接口和RS-485通(tong)(tong)訊(xun)(xun)接口，同時支持Modbus-RTU協(xie)議(yi)和DLT645-97(07)協(xie)議(yi)；可(ke)帶繼電器報警(jing)輸(shu)出(chu)和開關量(liang)輸(shu)入功(gong)能(neng)；根據(ju)不同要求，通(tong)(tong)過(guo)儀(yi)表面板按鍵，對變比、報警(jing)、通(tong)(tong)訊(xun)(xun)進行設(she)置；具有(you)開關量(liang)事(shi)件記(ji)錄(lu)（Modbus協(xie)議(yi)）、編程和事(shi)件設(she)置記(ji)錄(lu)（645協(xie)議(yi)）、數據(ju)瞬時和定時凍結功(gong)能(neng)（645協(xie)議(yi)）、電壓(ya)電流(liu)功(gong)率值記(ji)錄(lu)功(gong)能(neng)。

??DJSF1352-RN rail-mounted DC power meter designed for telecommunications base stations, DC charging piles, solar photovoltaic and other applications, this series of meters can measure the voltage, current, power and forward and reverse energy and so on in the DC system.The actual use of the site, you can measure the total power, but also measure the energy within a specified period of time. The test results can be used for local display, but also with industrial control equipment, computers to form a measurement and control system.

??The meter can have infrared communication interface and RS-485 communication interface, and supports Modbus-RTU protocol and DLT645-97 (07) protocol at the same time.The meter can have relay alarm output and digital input function;You can set the ratio, alarm, and communication through the meter panel keys according to different requirements.The meter can have event recording of switch (Modbus protocol), programming and event setting records (645 protocol), instantaneous and timing freeze function of data (645 protocol), value recording function of voltage and current power.

??3.型號及功能介紹 Type and Function Description

??Note：when dual DC input（D）function is selected，if Hall current sensor input is used in

??current channel,a power supply module shall be provided to supply power to the second Hall sensor;if D function is not provided,the built-in power supply of electric meter can be used.

??4.開口式霍爾電流傳感器Split Core Hall Current Transformer

??5.客戶要求 Customer Requirement

??客(ke)戶有一個太陽能混合動力(li)系統(tong)(tong)。PV板，電(dian)(dian)(dian)池儲能與柴油(you)發生器電(dian)(dian)(dian)信站，三者連接(jie)到(dao)同一根母線。客(ke)戶想用直流(liu)儀表來監測母線的電(dian)(dian)(dian)流(liu)電(dian)(dian)(dian)壓。他(ta)們的太陽能系統(tong)(tong)是(shi)(shi)電(dian)(dian)(dian)信基站，輔助電(dian)(dian)(dian)源是(shi)(shi)DC48V，電(dian)(dian)(dian)流(liu)是(shi)(shi)DC100A。

??The customer have a solar hybrid system. PV panel, battery storage and diesel generator for a telecom station，All the 3 systems are connected to a single bus bar. They wants to know the watt hour reading from the bus bar using a DC meter. And their solar site is a telecom site. the power supply voltage is DC 48V, the current is DC100A.

??參考文獻 Bibliography

??1.Solutions For Enterprise Micro-grid System 2021.04