Utility scale PV Monitoring Solutions

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1 Utility scale PV Monitoring Solutions MONITORING AND CONTROL OF PHOTOVOLTAIC SYSTEMS Intelligent Solutions for effective O&M and lowest PV production cost

2 MONITORING AND CONTROL OF PHOTOVOLTAIC SYSTEMS Photovoltaic (PV) project investments require continuous, accurate and traceable plant monitoring data in order to determine the actual vs. design performance and to fulfil owner/investor expectations. Operators are interested to identify errors and losses in a reliable way to trigger appropriate actions for maximizing energy harvest during the total system lifetime. INTELLIGENT SOLUTIONS AT ALL LEVELS Gantner.webportal and SCADA solutions for PV Performance monitoring, Data storage, Visualization, Analysis and automated Reporting provide transparency about the performance of your PV investment. Mobile integration with HTML5/W3C. SCADA LEVEL Data loggers record all measurement parameters from the string level. Furthermore, meteorological data, inverter data and other state variables (switch gear, transformer status) are collected as well based on the modular concept. Signal conditioning, data storage and transfer, compressing and communication in many ways are the strengths of this flexible data solution. * DATA LEVEL Used in medium and large PV systems, design and production errors will be recognized on the DC side with high resolution on a string level. This accurate measurement is inverter independent and gives feedback about losses due to soiling, shading, PV Module degradation etc.. STRING LEVEL * Data logging and communication concept based on IEC Ed.2 Photovoltaic System Performance Monitoring Guidelines for Measurement, Data Exchange and Analysis ; Integrated grid interaction according to IEC for plant control (reactive power, ramp rates etc.) 2 3

3 STRING LEVEL With the monitoring of PV Module strings, design and production errors will be recognized with high resolution down to PV Module level. Using DC shunts (vs. Hall Effect sensors) the string.bloxx provides current measurements typically 10 times more accurate and not susceptible to temperature variance. This equates to higher accuracy measurements and better understanding of true system performance. In addition, string voltage (up to 1000V)* and DC power on every string can be continuously monitored ensuring maximum system productivity. string.bloxx 08/16/24 string.cb 08/16/24 string.bloxx All in One 24/12* Continuous measurement of both cabinet and panel temperatures, along with overvoltage monitoring and main switch control greatly and improves system diagnostics. And all of this from a product that consumes less than 1.5W. This accurate measurement is inverter independent and gives feedback about losses due to inverter malfunction, soiling, shading, PV Module degradation etc.. The string.bloxx communicates via industry standard Modbus protocols for easy and fast integration. Fiber optic technology is used for longer distances. 8, 16, 24 Input channels for string currents ± 26 A (shunt 1 mω) Accuracy 0.25% 1 Input channel for string voltage VDC 2 Input channels for solar panel and cabinet temperature (Pt1000) 3 Digital inputs for monitoring of surge protection and main switch Signal conditioning: DC power, linearization, average, scaling, alarm 1.5 W max. Power Consumption (10-55V) Integrated LCD display Interface RS485, Modbus RTU (optional OEM protocols) 8, 16 or 24 PV Module string inputs Ground or Wall mounted enclosure Designed for 1000 VDC Monitoring of contacts, circuit breaker and protection device Onboard display for direct access to all parameters (I, U, P, T) Galvanic isolation of each channel, power and interface (1000 VDC)* Ruggedized housing, IP65, UV and weather resistant, -35 C to +80 C Switch fuse holder in Positive and Negative line DC Load disconnection switch Unifies DC measurement, fuses, overvoltage protection & communication Faster installation time Cost reduction by 30% Format Factor reduced by 35% 24 Input Chanel per board, modular concept 312 kwp per Unit Customer specific pre-manufacturing *1500VDC configuration also available Shunt measurement ensure high accuracy and good stability: Accuracy 0.25 % Stability 0.01 %/K Consistently designed for 1000VDC*: Terminals, cables, connectors, housings 4 5

4 DATA LEVEL SCADA LEVEL The intelligent data loggers record all measurement parameters from string level. Furthermore, meteorological data, inverter data and other state variables (switch gear, transformer status) are collected as well based on the modular concept. Protocols from all leading inverter manufacturers are implemented. Signal conditioning, data storage and transfer, compressing, and communication in many ways are the strengths of this flexible data solution. Data transfer is possible by cable (Ethernet/LAN) or wireless (GPRS/3G or 4G, WiFi) the loggers meet all standard security requirements (SSL) with lowest power consumption. Communication concepts based on IEC Ed.2 Photovoltaic System Performance Monitoring Guidelines for Measurement, Data Exchange and Analysis and grid interaction according to IEC for plant control (reactive power, ramp rates etc.) are integrated. The data acquisition system grows with the requirements. Distributed Q.series measurement modules can be integrated at any time. Up to 100MWp can be controlled by one single Q.reader. Gantner.webportal and SCADA solutions for PV Performance monitoring, Data storage, Visualization, Analysis and automated Reporting provide transparency about the performance of your PV investment. * Main benefits with gantner.webportal Reduced risk for owner/investor and operator Comprehensive Financial KPIs for Investors One unified platform for effective and automated PV plant management Vendor-independent PV Plant monitoring Provides baseline for energy prediction (day ahead), energy trading, etc. Fully compliant w/ international standards like IEC Ed.2 Optimized PV production leads to increased asset value Exemplary features of the data logger Q.reader Integrated Plant control (reactive power, ramp rates etc.) Analog and digital inputs and outputs via Q.series I/O modules 6 x RS485 fieldbus interface, ethernet Ethernet interface for configuration and data transfer, 10Hz Connectivity to inverter, I/O devices (e.g. weather station) Industrial data storage, expandable via USB Configurable monitoring (alarms, reports) Direct link to the gantner.webportal or file transfer (.json,.csv) via FTP Easy operation system One device concept for >5000 string measurements * Functions and features adaptable based on customer needs. 6 7

5 Germany Gantner Instruments Environment Solutions GmbH D Zwönitz Gantner Instruments Test & Measurement GmbH D Darmstadt Austria Gantner Instruments Test & Measurement GmbH A-6780 Schruns USA Gantner Instruments Inc. CA San Diego, USA France Gantner Instruments France F Paris Sweden Gantner Instruments Nordic AB SE Stockholm Singapore Gantner (S.E.A.) Pte. Ltd. Singapore (659578) India Gantner Instruments India Pte. Ltd. Perungudi, Chennai Distribution- and Service partners in 31 further countries Hong Kong Office Unit B, 9/F Fat Lee Ind. Building, 17 Hung To Road, Kwun Tong, Kowloon, Hong Kong Beijing Office Room A1508, Yuanjing International Building, Yunjing East Road, No.1, Tongzhou Disctrict, Beijing , China Shanghai Office Room 1708, Yaojiang International Plaza, No.258, Wusong Road, Shanghai , China Xi an Office Room 1305, Xi an JiaoTong University Press Building, 10# XingQing South Road, Bei Lin District, Xi an , China Document ID:1504/ENG Photovoltaic