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您現(xiàn)在的位置：首頁 >> 技術文章 >> 安科瑞DJSF1352-RN直流電表在尼日利亞太陽能混合動力系統(tǒng)的應用
安科瑞DJSF1352-RN直流電表在尼日利亞太陽能混合動力系統(tǒng)的應用
瀏覽次數(shù)：648發(fā)布日期：2021-12-08

安科瑞 師晴晴

江蘇安科瑞電器制造有限公司 江蘇江陰


摘要：本文介紹了安科瑞DJSF1352-RN直流電表在尼日利亞小型光伏發(fā)電設施直流側的應用。主要用于光伏系統(tǒng)中的電流的計量，通過霍爾對電路系統(tǒng)進行計量、通訊和控制等。

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

該公司位于尼日利亞，是一家新能源公司。主要在非洲從事光伏發(fā)電項目?？蛻粢褂弥绷麟姳恚糜诠夥到y(tǒng)中直流側的監(jiān)測計量。

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導軌式直流電能表，主要針對電信基站、直流充電樁、太陽能光伏等應用場合而設計，該系列儀表可測量直流系統(tǒng)中的電壓、電流、功率以及正反向電能等。在實際使用現(xiàn)場，即可計量總電能，又可計量規(guī)定時間段內的電能。檢測的結果既可用于本地顯示，又能與工控設備、計算機連接，組成測控系統(tǒng)。

儀表可具有紅外通訊接口和RS-485通訊接口，同時支持Modbus-RTU協(xié)議和DLT645-97(07)協(xié)議；可帶繼電器報警輸出和開關量輸入功能；根據(jù)不同要求，通過儀表面板按鍵，對變比、報警、通訊進行設置；具有開關量事件記錄（Modbus協(xié)議）、編程和事件設置記錄（645協(xié)議）、數(shù)據(jù)瞬時和定時凍結功能（645協(xié)議）、電壓電流功率值記錄功能。

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.

 

Technical parameters

Index

 

Input

Nominal value

Voltage input range

Current input

DC 0-1000V

Hall sensor：0-20mA、4-20mA、0-5V，0-10V and so on.

Overload

1.2 times rated (continuous); 2 times rated/1 second;

Power consumption

Voltage: ≤0.2VA, current ≤0.1VA

Accuracy class

Class 1

Function

Display

8-bit segment LCD screen (LCD)

Communication Interface

RS485（two options）

Communication protocol

Modbus-RTU，DL/T 645-2007

Switch

Switch output

2 Relay outputs, 2A/30VDC or 2A/250VAC

Switch input

2 dry contact inputs

Pulse output

A second pulse output, a energy pulse output

See the SYS->PLUS display in the meter menu settings. For example: The meter displays 100, which is 100imp/kWh

Power Supply

Voltage range

AC/DC 85-265V or DC24V(±10%) or DC48V(±10%)

Power consumption

≤ 3W

Power frequency withstand voltage

Power supply // Voltage input // Current input // Relay output and switch input // Communication interface / / Pulse output 3kV/1min

Power supply // Relay output // Voltage input // Current input 3kV/1min

Pulse output // Communication interface // Switch input 2kV/1min

Impulse withstand voltage

±6KV

Insulation resistance

≥ 40M ?

Average barrier-free working hours

≥50000h

Environment

Temperature

Normal operating temperature: -25 °C ~ +65 °C; Limit working temperature: -40 °C ~ +70 °C;

Storage temperature: -40℃～+80℃

Humidity

≤93%RH, no condensation, no corrosive gas

Altitude

≤2500m

 

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

Type

Rated current

Rated output

Measuring Aperture

Power Supply

AHKC-EKA

0-(50-500)A

5V/4V

Φ20mm

±15V

AHKC-EKAA

DC 0-(50-500)A

4-20mA

Φ20mm

12V/24V

AHKC-EKDA

AC 0-(50-500)A

4-20mA

Φ20mm

12V/24V

AHKC-EKB

0-(200-1000)A

5V/4V

Φ40mm

±15V

AHKC-EKBA

DC 0-(200-1000)A

4-20mA

Φ40mm

12V/24V

AHKC-EKBDA

AC 0-(200-1000)A

4-20mA

Φ40mm

12V/24V

AHKC-EKC

0-(500-1500)A

5V/4V

Φ55mm

±15V

AHKC-EKCA

DC 0-(500-1500)A

4-20mA

Φ55mm

12V/24V

AHKC-EKCDA

AC 0-(500-1500)A

4-20mA

Φ55mm

12V/24V

AHKC-K

0-(400-2000)A

5V/4V

64*16mm

±15V

AHKC-KAA

DC 0-(400-2000)A

4-20mA

64*16mm

12V/24V

AHKC-KDA

AC 0-(400-2000)A

4-20mA

64*16mm

12V/24V

AHKC-H

0-(500-3000)A

5V/4V

82*32

±15V

AHKC-KA

0-(500-5000)A

5V/4V

104*36

±15V

AHKC-HB

0-(2000-8000)A

5V/4V

132*52

±15V

0-(10000-20000)A

5V/4V

132*52

±15V

0-(25000-40000)A

5V/4V

132*52

±15V

AHKC-HBAA

DC0-(2000-8000)A

4-20mA

132*52

12V/24V

DC0-(10000-20000)A

4-20mA

132*52

12V/24V

DC0-(25000-40000)A

4-20mA

132*52

12V/24V

AHKC-HBDA

AC0-(2000-8000)A

4-20mA

132*52

12V/24V

AC0-(10000-20000)A

4-20mA

132*52

12V/24V

AC0-(25000-40000)A

4-20mA

132*52

12V/24V

 

5.客戶要求 Customer Requirement

客戶有一個太陽能混合動力系統(tǒng)。PV板，電池儲能與柴油發(fā)生器電信站，三者連接到同一根母線。客戶想用直流儀表來監(jiān)測母線的電流電壓。他們的太陽能系統(tǒng)是電信基站，輔助電源是DC48V，電流是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