WIRELESS System for verification and certification of ENERGY YIELD of photovoltaic plants

Transcription

1 Environmental monitoring systems and remote controls WIRELESS System for verification and certification of ENERGY YIELD of photovoltaic plants

2 Determination of the % Yield of Photovoltaic system with certified process. Determination of the Energy yield (produced Energy and radiated Energy). Print of the Verification Report with results of the monitoring campaign. Customizable and Configurable System trough simple keyboard and via web. Data recording on USB memory (2GB) with Numeric and Graphic Visualization. Monitoring according to directives IEC 61724, CEI and EN Pyranometers according to directives WMO (World Meteorological Organization), WRR (World Radiometric Reference), ISO 9060 class II, Class I or Secondary Standard. Possibility of alarm and data management also from remote with GPRS connection. No necessary connection, immediate installation thanks to wireless transmission up to 150m, with the possibility of expansion up to 100 sensors. Monitoring of Solar Radiation and Module s Temperature Data Acquisition, Registration and Print of the Report Detection of Produced Energy from Photovoltaic Plant

3 System The radiometric system Nesa, Belenos, is designed for monitoring campaigns of solar radiation of plants for the production of electric energy from photovoltaic source and for a simple determination of the effective yield of the plant, comparing the energy that the plant should theoretically produces with that really produced. The system is provided ready to use, thanks to the use of wireless technology which requires no connection. Belenos basic version consists of: - Robust aluminium Case containing the unit (datalogger) of data acquisition and registration on USB memory, the printer for printing the monitoring report at the end of the measurement campaign and the wireless unit for the communication with sensors. - A couple of wireless sensors to measure the global and diffuse solar radiation from which calculate the incident direct radiation on photovoltaic modules. - A couple of wireless sensors to measure the surface temperature of photovoltaic modules Pt100 1/3 DIN. - A wireless unit to detect the produced energy directly from the meter (option). - Bag with pole tripod for positioning and support of radiometric sensors. System s Operation Belenos is configured to acquire radiometric and meteorological data according to WMO (radiation sensors on horizontal plane) and current regulations, in particular, IEC Every system requires few specific configuration parameters for every plant as: Plant position (Latitude and Longitude) Inclination angle of photovoltaic modules Plant direction (degrees West) Nominal power of the plant Every parameter is easily inserted from the operator at the beginning of every measurement campaign in order to calibrate the monitoring on the specific plant, by keyboard setting. Belenos, one time started, records measures, manages communications and makes the astronomical calculation of the sun position (azimut & zenit) to match exactly the measure of solar radiation acquired and that incident on photovoltaic modules. In this way it is able to accurately estimate the effective radiated energy on the analyzed plant. Detecting at the same time also the energy really produced (KW) output from the plant directly from the meter (option), it s able to estimate the really yield of the plant instant by instant. Azimut, zenit, tilt angle γ s = Zenit α s = Azimut

4 All measures are continuously recorded at programmable intervals (minimum 1 time per minute) and are available both internal to datalogger and in USB removable memory. Data are easily converted in Excel format (via web application supplied) to be then managed and processed. Trough a simple web link, it s also possible monitor the state of measures in real time in numeric and graphic format. At the end of the measurement campaign, pressing just a button it s possible to obtain the print of the monitoring report in the form of a slip of paper which contains all relevant data of the plant: Verification Photovoltaic System n.125 Date April 2010, 02 Time: Plant name: Power: Lat.: 12 02'21.0"N Inclination: 32 Plant Data PRATO VERDE 4,2KW Long.: 45 51'46.0"E Directing: 15 Ovest Verification Results Produced Energy: KW/h Calculated Energy: KW/h % Yield: 98.52% Data obtained by NESA system Belenos with certified instrumentation Data registration is done on 2 separate memory supports: 1. Fixed support, internal to control unit, from min. 32MB of capacity. 2. Removable support (USB memory) with more capacity from 2GB to 4GB which guarantees additional safety copy of historical data. These data could be archived in encrypted form (option) to guarantee their integrity and durability up to the verification of the real plant performance. Then, data content in files are not interpretable if the user hasn t a private key and a software provided by Nesa to remove the protection. Belenos becomes so a real black box of the photovoltaic plant, as provides all information about the radiation received, the yield and environmental measures that have influenced the performance. Programming The system is totally configurable from internet browser both in local than from remote (tele programming), after authentication with user-name and password to access. The data download happens mainly in 3 ways: - On site: via LAN connecting a portable PC with internet browser (ex. Internet Explorer) with standard protocols TCP/IP. - On site: taking the USB memory and linking it directly to a PC. - From distance: via a module of data transmission GPRS (optional) linked to the serial port RS232 from the control unit, through FTP protocol (file transfer protocol) after user authentication with user-name and password. Instant data visualization Instant data could be displayed in real time on the display of the system, on the web page of datalogger (web server on-board) where it s possibile obtain data in tabular and graphic format with tracking in real time of acquired measures, or connecting on FTP remote area (optional).

5 The system is able to manage independently also alarms and pre-alarms that, according to the programmable thresholds, can activate relays command, does regulations of analog outputs, send a signal from distance via SMS, via mail, or directly to a remote operating centre (optional). Available options: - Certificate of calibration for solar radiation sensors accordino to ISO 9847 Type II C. - UTA Combined sensor to measure temperature and air humidity. - DV-A Wind direction sensor. - BAR-A Sensor to measure the atmospheric pressure. - PL400-N Sensor to measure the atmospheric precipitation. - ZBS2 Wireless interface unit for Nesa sensors. - RSG1 Solar radiation sensor First Class. - RSG2STD Solar radiation sensor Secondary Standard. - GPRS Transmission data unit from GPRS remote. Another options can be provided or activated on demand.

6 Technical Data Datalogger Terminale TMF100 TMF100 Terminal Unit Tecnologia Technology 32bit processor with Embedded Linux operative system on board Ingressi analogici/pt100/0 2Vdc/4 20mA Analog/Pt100/0 2Vdc/4 20mA Inputs n. 12bit channels (Vmax 0 2Vdc ; I 4 20mA) n. 24bit channels (Vmax 0 2Vdc ; I 4 20mA) Ingressi digitali Digital Inputs n. 5 ingressi digitali in frequenza (max 1000Hz) n. 5 digital frequency input (max 1000Hz) Uscite analogiche programmabili Programmable Analogic outputs n. 12bit channels 0 2Vdc Uscite digitali Digital outputs n. 8 open drain channels for relais command (Vmax=50V, Imax=200mA) Porte di comunicazione Communication ports n. 2 RS232 n. 2 USB Host n. 1 LAN Ethernet 10/100Mb Memoria dati interna Internal Data storage A partire da 32MB / Min 32MB Memoria dati esterna External Data storage Pen-drive industriale USB 256MB 4GB Orologio datario Data-clock Sistema al quarzo e aggiornamento automatico via NTP Quartz management and automatic NTP connection Watch dog Watch dog Reset hardware della Cpu / Cpu hardware reset Protezioni Protections Contro corto circuiti e scariche indirette Polarity reverse and transient Programmabilità e Teleprogrammazione di: Programmability & Remote control of: Localmente, rete LAN e da remoto tramite modem, GPRS, GSM, wireless, satellite, FTP. radio In local via serial port, LAN, from remote via modem, GPRS, GSM, wireless, satellite, FTP. Radio Interfaccia locale operatore User interface display LCD LCD display Consumo Current Consumption < 1W in funzionamento/full operation Alimentazione Power supply 24Vac, 110Vac, 220Vac (con trasformatore esterno), 10,5 18Vdc, Pannello Solare, Generatore eolico / 24Vac, 110Vac, 220Vac (with external voltage transformer), 10,5 18Vdc, Solar Panel, Aeolian supply Temperatura operativa Operative temperature C Peso weight 0,8 Kg Dimensioni Dimensions 177x118x60mm Marcatura Norms CE, SIT (on request) Contenitore (opzionale) IP65 IP68 (optional) IP65 Box IP68 300x400x220mm (altre dim. Su richiesta) 300x400x220mm (other dim. on request) Trasmettitore Wireless ZBS Caratteristiche generali Caratteristiche RF Alimentazione Norma ECC di riferimento: direttive 2006/95/ECC, 89/336/EEC, 99/5/EC Wireless transmitter ZBS General characteristics RF characteristics Supply voltage Compliant with ECC Norms: 2006/95/ECC, 89/336/EEC, 99/5/EC directives Compatible IEEE ZigBee stack Device address software or internal dip-switch settable Frequency: 2405 MHz 2480 MHz Nominal transmission power: 2mW Coverage outdoor: 150m, indoor : 50m High energy lithium battery 3,6V inside 2 years battery life with 6 second sampling rate ETSI EN , ETSI EN , EN , EN , EN

7 Pyranometers RSG-N Radiazione solare Globale Global solar radiation campo di misura tipico typical measurement range W/m2 Range spettrale spectral range 0,3µm 3µm segnale di uscita standard standard signal output 10µV/(W/m2) Classe di Precisione conforme ISO9060 Certificazioni/Calibrazioni Altre uscite disponibili Accuracy Class conforming to ISO9060 Certifications/Calibrations Other avilable outputs RSD Radiazione solare Diffusa Diffuse solar radiation Sensori utilizzabili Caratteristiche anello di schermo Usable sensors Contact temperature sensors Features shadow band RSG2STD-N: Secondary Standard RSG1-N: First Class RSG-N: Second class ISO 9847 Metodo II C - ref. WRR (World Radiometric Reference) RSG-A: 0 2Vdc (typical range W/m2) RSG-B: 4 20mA (typical range W/m2) RSG2STD-N: Secondary Standard RSG1-N: First Class Diffuse RSGD-N: Second class Diffuse Peso/weight: 6kg Diametro/diameter: ø570mm Altezza/height: 55mm Regolazione/regulation: manuale/manual TA-N - Temperatura Temperature campo di misura tipico typical range C precisione accuracy DIN /3 DIN class segnale di uscita standard standard signal output Pt100 (4 fili/cables) Optional meteorological sensors TA-N - Temperatura Temperature campo di misura tipico typical range C precisione accuracy DIN /3 DIN class segnale di uscita standard standard signal output Pt100 (4 cables) UR-A - Umidità Humidity campo di misura tipico typical range 0 100% precisione accuracy ± 2% segnale di uscita standard standard signal output 0 1 Vdc BAR-A Pressione Atmosferica Atmospheric Pressure campo di misura tipico typical range hpa ( su richiesta/on demand) sensibilità sensibility 0.05 hpa precisione accuracy C

8 Opzioni/ Options AL. PS. Stazione Station PL400-N - Pluviometro Rain gauge Superficie orifizio Orifice area 400cm 2 max intensità misurabile max counting rate mm/h sensibilità sensitivity 0.2 mm precisione media average accuracy ±3% VV-N Velocità vento (disponibile anche nella versione riscaldata a basso consumo 4W@12Vdc) Speed wind (available in the heated version also with low consumption 4W@12Vdc) campo di misura tipico typical measurement range 0 50 m/s (raffiche/blasts >80 m/s) precisione accuracy 0.1 m/s (0,4 30m/s); ± 2% v.m. (>30 m/s) segnale di uscita standard standard signal output Impulsi / pulses 0 150Hz (Other avilable Ouputs: 0 2Vdc or 4 20mA) Certificazioni/Calibrazioni Certifications/Calibrations MeasNet, SIT, Dewi DV-A Direzione vento (disponibile anche nella versione riscaldata a basso consumo 4W@12Vdc) Wind direction (available in the heated version also with low consumption 4W@12Vdc) campo di misura tipico typical measurement range (raffiche/blasts 0 70 m/s) precisione accuracy ± 1 soglia starting threshold 0.25 m/s segnale di uscita standard standard signal output 0 2 Vdc (Other avilable Ouput: 4 20mA) Certificazioni/Calibrazioni Certifications/Calibrations DKD Order Form Belenos Measure system of energy yield of photovoltaic plants System consists of case, sensors and bag with pole tripod, 220Vac/12vdc power pack BELENOS * Alimentazione/Power Supply (220Vac, 24Vac, 12Vdc, PS, EO) PS Trasmissione dati / Data transmission (GPRS, Modem, Cable LAN, WiLan) Altre richieste: Esempio di codice d ordine / Example of order code BELENOS PS GP * = campi obbligatori da indicare / obligatory fields to point out GP