Monitoring System for a Photovoltaic Installation

7/25/2019 Monitoring System for a Photovoltaic Installation

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TUNISIA POLYTECHNIC SCHOOL

Supervised by: Meher CHAABEN

Lecturer

Elaborated by: Ahmed SAKKA

3rd year enineerin student! option:S"S#

Engineering Internship Presentation

1

Monitoring System For A

Photovoltaic Installation



Plan

2

Project context

Project equipment

Design of the monitoring system



Plan

3

Project context

Project equipment




resen a on o e so arinstallation

4

Fig1. Synoptic schema of the solar installation



Shortcoming o the e!isting "AS

5

The ata logging unit cannot sa!e the historical !alues of the solarirraiation

"a#oratory researches are #ase on the historical !alues of theP$P parameters

The ata logging unit lac%s &exi#ility

This &exi#ility in D'(s is highly require in a la#oratory )heremany i*erent approaches of research are carrie out



Pro#ect s$eci%cations

+

De!elopment of a D'( capa#le of sa!ing the acquire ataeach one minute on aily log ,les-

These log ,les shoul #e a#le to #e rea #y .icrosoft Excel-

Design of a harmonious graphic interface that isplays clearlythe target parameters-

/ser shoul #e a#le !isuali0e the sa!e ata an the linechart of the measure parameters from the graphic interface



Plan

Project context

Project equipment




a a ac&' s oncar+

The chosen D' car is /(67318 for !arious reasons9

The input resolution of the /(67318 moule is 1+ #its-

The car is lin%e to P: #y /(6 port-

The full scale of the car;s 'D: is con,gura#le for eachchannel-

The car supports i*erential analog input channels-

The car pro!ies 2 analog output channels-

The sampling frequency is 58 <0= the maximumfrequency of the input signals is 25 <0 >(hannontheorem?



Fig2. Screw terminal

assignments of the KUSB-

3108 boar

@

"ata ac&'isition ("A)*car+



Programming sot,are

18

The $'r$oses o having a$$ro$riatesot,are are-

'cquiring ata in the #ac%groun )hile processingin foregroun-

'cquiring ata at speci,e sampling rate-

De!eloping the graphic interface>monitoringAsa!ing?



11

It uses a ata graphical programming language )herethe processing can #e controlle using #loc% iagramsan front panels-

De!elope programs are calle $irtual Instruments>$I?

It o*ers high7le!el functionalities esigne speci,cally

for measurement an automating applications-

It can create executa#le from any operational $I

La./IE0 123



"T4L/ Lin5

12

"i#rary of $irtual Instruments >$Is? pro!ie )ith the

/(6 moule

It gi!es programmers )or%ing in "a#$IEB the a#ility toaccess /(6 car

Fig3. !he role of "!-#$ #in%







/I or solar irra+iation ac&'isition

15

Fig). !he line chart of the collecte meas(res



6e+'cing noise (har+,are*

1+

Biring the !oltage source of the sensor toanalog input channel using the i*erential

con,guration9 recommene #y /(6atasheet

'justing the full scale >'D:? of the use

channel for the irraiation sensor;s !oltagerange > 8 To 158m$?



6e+'cing noise (sot,are*

1

Fig.* +lgorithm to eliminate fa(lty meas(res from the ac'(ire signal



Ac&'iring tem$erat're sensorsignal

1

'nalog input ofthe D' moule

Fig,. !he role of conitioner circ(it



"esign o the con+itioner

1@

!he maim(m c(rrent processe by the sensor 1m+Selecte c(rrent 0.*m+

Fig8. +mplifier circ(it for the conitionner

Stanar /in 1K



"esign o the con+itioner

28

Fig.!he inp(t signal of the operational amplifier



Filtering stage

21

Fig10.low ass Filter 4Fc 0)567

Calc'lation o the c'to8re&'ency-

The gain o the%lter-

,here F is the re&'ency o /in

As F remains almost %! the %lter9s gain remains also%!



The %nal voltage con+itioning circ'it

22

Fig11.!he oltage conitioning circ(it Fig12.!he carrie o(t circ(it



6es'lt o the con+itioner

23

Fig13.!he inp(t of the final circ(it presente on the same scale as

the inp(t of the circ(it witho(t filtering stage



"ata logging

24

Data logging consists on storing each 1 min theacquire ata in a log ,le ha!ing the corresponingate as name

The storing action consists on creating a ne) line in

TD.( ,le )here9the ,rst case is e!ote to the exact time of storage

the secon case is e!ote to the orer of the storeline

the other 3 cases are e!ote to store the threeacquire parameters

Bhen the ate changes another log ,le )ill #ecreate )ith the ne) ate as a ,lename



"ata logging

25

Fig1&.+ part of a log file create by the eelope $9



:ra$hic interace

2+

Fig1). !he eelope graphic interface



Concl'sion

2

Presentation of the project context

Description of the use soft)are an har)are equipment

Design of the monitoring system part graphic interface

Easy implementation of algorithm to manage the use of energy



2

Than5s or yo'r attention



TUNISIA POLYTECHNIC SCHOOL

Supervised by: Meher CHAABEN

Lecturer

Elaborated by: Ahmed SAKKA

3rd year enineerin student! option:S"S#

Engineering Internship Presentation

Monitoring System For A

Photovoltaic Installation

Monitoring System for a Photovoltaic Installation

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