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您现在的位置：首页 >> 技术文章 >> 安科瑞DJSF1352-RN直流电表在尼日利亚太阳能混合动力系统的应用
安科瑞DJSF1352-RN直流电表在尼日利亚太阳能混合动力系统的应用
浏览次数：529发布日期：2021-12-08

安科瑞 师晴晴

江苏安科瑞电器制造有限公司 江苏江阴


摘要：本文介绍了安科瑞DJSF1352-RN直流电表在尼日利亚小型光伏发电设施直流侧的应用。主要用于光伏系统中的电流的计量，通过霍尔对电路系统进行计量、通讯和控制等。

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.项目概述：Project Overview

该公司位于尼日利亚，是一家新能源公司。主要在非洲从事光伏发电项目。客户要使用直流电表，用于光伏系统中直流侧的监测计量。

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介绍 DJSF1352-RN DC Energy Meters

DJSF1352-RN导轨式直流电能表，主要针对电信基站、直流充电桩、太阳能光伏等应用场合而设计，该系列仪表可测量直流系统中的电压、电流、功率以及正反向电能等。在实际使用现场，即可计量总电能，又可计量规定时间段内的电能。检测的结果既可用于本地显示，又能与工控设备、计算机连接，组成测控系统。

仪表可具有红外通讯接口和RS-485通讯接口，同时支持Modbus-RTU协议和DLT645-97(07)协议；可带继电器报警输出和开关量输入功能；根据不同要求，通过仪表面板按键，对变比、报警、通讯进行设置；具有开关量事件记录（Modbus协议）、编程和事件设置记录（645协议）、数据瞬时和定时冻结功能（645协议）、电压电流功率值记录功能。

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.型号及功能介绍 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 Ω

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.开口式霍尔电流传感器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.客户要求 Customer Requirement

客户有一个太阳能混合动力系统。PV板，电池储能与柴油发生器电信站，三者连接到同一根母线。客户想用直流仪表来监测母线的电流电压。他们的太阳能系统是电信基站，辅助电源是DC48V，电流是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.

 

参考文献 Bibliography

1.Solutions For Enterprise Micro-grid System 2021.04