SOLARCARE SERIES PRODUCT AND APPLICATION GUIDE for solar energy management LEATEC Delivering Solutions for Energy Management SOLAR ENERGY DATA CENTER BUILDING
4 to8 String Monitoring with 0.% Accuracy 5 Digital and Analog I/O 00 Built-In Hardware The leading industry s -bit CPU string monitoring and control for smart array boxes and solar power stations Alarms for faults SMA0 Expand Unit Hall Effect sensors have much more benefits than the shunt type due to its isolation and flexibility. Closed loop types can even be more accurate. SMA CT connector supplies -5V and 5V to the open or closed loop sensors. SMA series not only calculates traditional V, I, kw, kwh values, but also additional beneficial data for solar analysis as well. These include max/min, average over rolling window calculation and alarms. Base Unit Utilizes industrial metering design with key features specializing in string monitoring: Modular design up to 8 channel input Mbit internal storage up to month data -bit industrial ADC for 0.% accuracy Internal clock for max/min calculation 7th and 8th channel configurable to monitor the Mains /- out currents Sequence of Events recording for status changes, alarms and I/O s Model Selection BIPV Roof Top Small Scale 4 String Monitoring AI Channels 78 gives you the additional measurements such as monitoring the main breaker and - or using accurate rated CT to measure leakage current to ground 4-pin standard CT connectors for easy wiring Solar Farm 8 String Monitoring AI, DI, DO Solar Farm String Monitoring Mains /- Measurement AI, DI, DO Solar Farm 6 String Monitoring Mains /- Measurement 4 AI, 6 DI, 5 DO SMA4 4 string SMA0 0 string 4 string 8 string SMA0 0 string 8 string
Technical Specifications Sheet SolarCare series is a powerful multi-string meter delivering you high accuracy and superb stability in harsh outdoor conditions. This unit consists of the base unit which measures 4 or 8 channels and an expansion optional unit that measures extra 8 channels main breaker measurements, giving a max of 8 channel measurements when SMA0 are combined. This CE certified industrial design operates within -5 C to 70 C wide range environments. BASE SMA0 Connected SMA0 Expand Unit Base Unit Digital and Analog I/O s on both units giving controls to sensors, status, breakers, washing units upon alarm conditions CORE FUNCTIONS SMA4 Function Base Unit Base Unit SMA0 expansion module Expansion Module connects to base unit Channels 4 Strings Voltage 8 Strings Voltage Additional 0 Current String measurement by adding to Base Units Accuracy 0.5% 0.% 0.% Current Input Requires Hall Effect current sensor, any rated AC/DC current can be measured with -0V to 0VDC output Requires Hall Effect current sensor, any rated AC/DC current can be measured with -0V to 0VDC output Voltage Input Max 000VDC or 000AC direct input Max 000VDC or 000AC direct input No Voltage Input CPU -bit RISC CPU -bit RISC CPU Module does not have CPU Sampling -bit ADC -bit ADC -bit ADC Memory Mbit storage data for month - logs both data logs and SOE event logs Clock Battery Backup Clock to provide time for max / min calculations Sampling Rate 000 samples / cycle 000 samples / cycle 000 samples / cycle Power Supply 4VDC or 85V to 65VAC 4VDC or 85V to 65VAC Powered by base unit HARDWARE DIGITAL AND ANALOG I/O Digital Input NA Digital Input 4 additional Digital Input Analog Input Analog Input Analog Input additional Analog Input Digital Output NA Digital Output additional Relay Digital Output max 8A MEASUREMENTS AND ALARMS Basic Measurements V, I, I total, kw, kw total, kwh, kwh total, Max, Min, DI, DO, AI, Current Polarity Advanced Vavg, Iavg, I total avg, kw avg, kw total avg - Average is calculated based on a configurable rolling window method to determine slow changes of values Efficiency Calculations Average Baseline Comparison, String Max Comparison, Specified Max Comparison, BOS Efficiency Alarms Over Limit, Under Limit, % Change from Average, /- String Difference Limit OTHERS Operating Temperature -5 C to 70 C -5 C to 70 C -5 C to 70 C RoHS YES YES YES Dimensions 5mmX0mmx50mm 65mmX0mmx50mm 40mmX0mmx50mm 4
SolarC are Solar Energy Management System Web-based technology SolarC are Server is the complete web-based server solution for small to medium solar energy generation applications Simple Plug & Play Hardware Integration rd Party Device Integration Web-based HMI for multi-level usage Integration with rd party products Industrial Linux based server with web interface SolarCare Server is the answer to a complete solution implementation for data collection and data processing from DC string monitors, inverters and AC power meters. Flexible card storage methods makes data collection simple. Customization drivers are available to integrate with rd party devices for a more complete the solution. Solarcare Server features include: Direct plug & play into RS485 Modbus network and Ethernet network Built-in drivers for connection with SMA string monitoring and control module Customizable to connect rd party devices such as inverters and AC meters RS485 Modbus DC Intelligent DC Intelligent LAN Ethernet Network Example of a small system built on roof top Inverter SolarCare System View by Internet Browser or By Smart Phone Industrial design server for excellent stability and performance under harsh conditions FEATURES Server Type Software Display Communications Enclosure Temperature Range Power Supply SPECIFICATIONS Web-based Linux Server SolarCare System v. Built-in Driver/Customization Available VGA Port for Local Display Connection RS485 Modbus Master Ethernet LAN Port Industrial Metalic Casing with Screw Mount 0-55 C 4VDC 5
SolarCare Application Guide - INTELLIGENT ARRAY BOX Solar Farm Illustration PV Array Grid Tie Power Conversion Substation (inverter). Complete Systems Automation: SMA series acts as the core control system for each array box. With built-in digital/analog inputs and outputs, central server can control and monitor remotely each operation via communications. By installing one per array box, this enables a true total systems automation. 5 Digital/Analog I/O 4 Analog Inputs can be configured as 0-0mA or 4-0mA inputs FROM PV STRINGS FUSE AND SURGE PROTECTION PROTECTION STATUS INTELLIGENT ARRAY BOX CT RS485 Communication SWA8 DISCONNECTOR CONTROL ANALOG INPUT WEATHER STATION DATA Standard Features Bus bar connecting several strings in parallel Fuse Protection for each string Lightning surge protection DC circuit breaker/disconnector for safety IP55/65 Enclosure Connectors Intelligent With SMA Series V, I, kw, kwh, Total, Inst, Avg measurements RS485 communication back to SERVER Analog INPUTS: - PV module temperature measurement - Array box internal temperature - Irradiance sensor measurement - Wind speed and direction - Humidity sensor measurement Digital INPUTS and OUTPUTS: - Disconnector status monitoring - Surge protection status monitoring - Remote control of disconnector via RS485 from central SERVER - Send order to washing system when string performance is below than average. String Performance Calculation and Alarms: Effciency in solar generation is one of the most crucial part of daily operations. There are 4 major performance metrics SMA can internally calculate without the need of software. Each performance calculation can be set as alarm via communications or to output DO digital relay. String Average Baseline Comparison Maximum Performance String Comparison Specified Performance String Comparison 4 BOS Efficiency! Max Perform Under Perform Average Perform ALARM - String String 6 Under Perform SMA series digital input port can be chosen as a dedicated AC meter kwh pulse to measure the amount of energy exported to the utility grid. The DC energy measured by SMA series can then compare with this AC pulse to give the overall BOS efficiency. 6
SolarCare Application Guide - INTELLIGENT ARRAY BOX Solar Farm Illustration PV Array Grid Tie Power Conversion Substation (inverter). Fault Location Reduces Down Time: To maximize systems efficiency and financial return, up time and availability is always the first priority of the operator. SMA quickly identifies the under-performing strings by the 00 configurable alarms. Operators can quickly locate the array hierarchy and string number to reduce fault time. Built-in alarms - Over, Under, Percentage Change From Avg, String Comparison Limit, Analog Input Alarm. UNDER LIMIT ALARM! STRING 4 < 9A ARRAY5 STRING 4 < 9A Standard Features Bus bar connecting several strings in parallel Fuse Protection for each string Lightning surge protection DC circuit breaker/disconnector for safety IP55/65 Enclosure Connectors Intelligent With SMA Series V, I, kw, kwh, Total, Inst, Avg measurements RS485 communication back to SERVER Analog INPUTS: - PV module temperature measurement - Array box internal temperature - Irradiance sensor measurement - Wind speed and direction - Humidity sensor measurement Digital INPUTS and OUTPUTS: - Disconnector status monitoring - Surge protection status monitoring - Remote control of disconnector via RS485 from central SERVER - Send order to washing system when string performance is below than average CENTRAL SERVER 4. Internal Memory Storage For Data Validation: Data integrity is an extremely important factor when measuring overall systems performance on a performance based contract. Communication line failures and central SCADA power blackout will impact the collection of data, which means there are periods of NO DATA to verify systems performance. SMA series Mbit memory stores up to month of data. 5. Ground Fault Detection and PV Mains Monitoring: Due to the nature of high DC voltages in PV installations, Arc faults are quite common and can cause fires which is a growing concern. There are types of common PV faults, Series, Parallel and Ground. Although GF Detectors and Interrupter GFDI devices are common solutions, there are cases where these devices do not trip. Preventative measures can only be achieved by continuous measurement of potential leakage currents between and - points. Additional CT7 and CT8 to measure mains output current or using accurate CT for leakage current measurement CT Channels 7 or 8 can be configured by DIP switches to measure external currents such as and - currents of the mains going out of the array box, for comparison with the mains feeding to inverters or leakage currents to ground. 7
Delivering Solutions for Energy Management SOLAR PV DIVISION LEATEC FINE CERAMICS CO., LTD. Email:public@leatec.com.tw Http://www.leatec.com.tw