Surge Protection & Monitoring Solutions for Photovoltaic Systems

Transcription

1 Surge Protection & Monitoring Solutions for Photovoltaic Systems

2 Raycap Products Provide the Ultimate Lightning Surge Protection for Photovoltaic Systems The remote locations, exposed surface areas and extensive layouts of solar power plants put them at high risk of damage from the elements, particularly electrical storms. A significant concern for photovoltaic (PV) power plant operators is equipment damage caused by direct or indirect lightning strikes. Damage from these events can bring a PV installation offline for days or perhaps weeks, resulting in power interruption and revenue losses. To avoid the destructive effects of lightning strikes, overvoltage protection must be installed at the inverter and at various other locations in the PV facility. There are always serious threats of operational and economic impact whenever inappropriate or ineffective surge protective devices (SPDs) are used. These threats include but are not limited to: Lightning strikes cause surges which propagate inside a PV plant s wiring structure, sending powerful impulses throughout the electrical system and severely damaging sensitive electronic equipment such as inverters, PV modules, control circuits and communication systems. While damage resulting from a direct lightning strike may be immediate, delayed equipment failures can also occur at any time due to the cumulative effect of repetitive exposure to surge anomalies. Many inverter manufacturers have already discovered the benefits of integrating Raycap s lightning and surge protection modules into their inverter equipment to provide optimum levels of surge protection for PV systems against lightning and power surges. Transformer Station Inverter Junction Boxes Install Raycap lightning protection at the inverter, junction boxes and panels to protect both the AC and DC sides of the solar power plant. Extended downtime due to long lead times for replacement parts Loss of revenue during downtime High repair and replacement cost of damaged PV equipment Control and monitoring system malfunctions Increased maintenance cost

3 Junction box installation featuring Raycap SPD solutions. With Raycap surge protection integrated into the solar power site, liability and damages can be diminished and profitability secured. The benefits of using Raycap s innovative surge protection include: Continuous equipment protection and more uptime Longer PV equipment life Safe and maintenance-free operation resulting in reduced operational costs High availability of the PV system, more secure revenues Elimination of downtime and the resulting revenue losses Raycap s Strikesorb, ProTec PV, and RayDat product lines are based on cutting-edge surge technologies that eliminate many common failures seen in PV installations. Strikesorb SPDs have a proven ability to Inverter Junction Box (String Monitoring Box) sustain multiple and successive lightning strikes and power surges without requiring any maintenance. Other Raycap products are available in DIN rail configurations and also offer significant surge protection in virtually every possible low voltage AC and DC power configuration utilized by photovoltaic power plants. ProSMS 8 PV string monitoring solution. Protect the PV system, power inverter and transformer station with Raycap lightning and overvoltage protection solutions.

4 Strikesorb 35 designed for photovoltaic DC power circuits. Raycap s surge protection solutions are manufactured in the company s total quality control ISO 9001 and ISO certified manufacturing facilities in Europe and North America. Products comply with all relevant international performance and safety standards. Individual SPD component qualification testing and monitoring by automatic tracking procedures ensure the highest quality end products are delivered to customers worldwide. Raycap SPDs are offered in Class I, Class II, Type 1, Type 2 and Type 4 CA configurations to deliver the most effective lightning and surge protection solutions available. They have been tested to surge current waveforms as defined by international standards for surge protective devices IEC , UL th Edition and IEEE C The enhanced performance characteristics of the Strikesorb 35 enable protection of DC power circuits in photovoltaic systems rated up to 1500 volts DC. Ultra-safe Strikesorb modules endure UL 3-cycle testing in order to ensure their safe operation when exposed to high levels of short circuit current. All Raycap products developed for use in PV environments deliver reliable, high performance lightning surge protection while fully complying with the EN standard which defines the requirements and tests for SPDs intended for installation on the DC side of photovoltaic power systems. Strikesorb, ProTec PV and RayDat products are manufactured and tested at Raycap s state-of-theart facilities in Europe and North America, under the strictest guidelines for SPD production and testing standards.

5 Lightning Protection Solutions Strikesorb family of products. Strikesorb Benefits High lightning and multiple surge current handling capability Maintenance-free operation Safe elimination of internal fusing to ensure protection at all times and under all circumstances Low let-through voltage to enhance system reliability High short circuit current ratings Compliance to ANSI UL th Edition and to IEC Full compliance with EN (Strikesorb 35) 10 year global product warranty Lightning surges are one of the primary causes of failures in photovoltaic and solar power plants. Operators investing in solutions using Strikesorb surge protection realize significant returns resulting from uninterrupted PV and solar power plant operations, minimized operating costs, greater revenue security and a maximum return on investment (ROI). Strikesorb provides state-of-the-art technology, excellent Class I protection from lightning induced surges, and is a well justified investment. Strikesorb Electrical Specifications Strikesorb Modules 35-F-HV 35-G-HV 40-A 40-B 40-C 40-D 40-E 40-F 40-G DC AC Category per IEC & EN Class I Class I per UL th Edition Type 2 CA Type 2 CA Nominal Operating AC Voltage [U n ] 120 V 240 V 277 V 400 V 480 V 600 V 1000 V Maximum Continuous Operating AC Voltage [U c ] 150 V 300 V 350 V 480 V 600 V 750 V* 1200 V Maximum Continuous Operating DC Voltage [U c ] 1100 V 1500 V Nominal Discharge Current (8/20 µs) [I n ] Maximum Surge Current Capacity (8/20 µs) [I max ] 140 ka Maximum Impulse Current (10/350 µs) [l imp ] 12.5 ka 12.5 ka Voltage Protection Rating (VPR) 2500 V 4000 V 600 V 1200 V 1200 V 1800 V 2000 V 2500 V 4000 V Voltage Protection Level [U p ] 2800 V 4400 V 700 V 1200 V 1300 V 1800 V 2300 V 2800 V 4400 V *690 V per IEC For additional information on Raycap surge protection technology visit us at: raycap.com.

6 ProTec PV Pluggable Low Voltage DIN Rail SPDs for DC Photovoltaic Applications ProTec PV industrial surge protection utilizes high performance varistors and integrates a state-of-the-art thermal disconnector. Raycap PV solutions provide good protection against overvoltage surges and transients. The products are available for Type 1 and Type 2 locations, and can cover practically all power system configurations. ProTec T1-PV and ProTec T2-PV solutions for PV applications are available up to 1500 V. ProTec PV Benefits Features a high energy MOV in a modular design Solutions for Type 1 and Type 2 locations (EN) DC (up to 1500 V) solutions available Certified to EN : 2013+A1: 2014 and UL th Edition ProTec T1-PV and ProTec T2-PV pluggable surge protection solutions. ProTec T1-PV(R) & ProTec T2-PV(R) Surge Protective Device (SPD) ProTec T1-1100PV3+0(R) ProTec T1-1500PV3+0(R) ProTec T2-1100PV3+0(R) ProTec T2-1500PV3+0(R) Type Type Type 2 Type 2 EN Electrical Category per EN per UL th Edition Type 1 Component Assembly Maximum Continuous Operating DC Voltage [UCPV] 1100 V 1500 V 1100 V 1500 V Nominal Discharge Current (8/20 µs) [In] Maximum Discharge Current (8/20 µs) [Imax] 40 ka 30 ka 40 ka 30 ka Impulse Discharge Current (10/350 µs ) [Iimp] 6.25 ka 5 ka Total Discharge Current (10/350 µs ) [ITotal] 12.5 ka 10 ka Total Discharge Current (8/20 µs ) [ITotal] 50 ka 40 ka 50 ka 40 ka Voltage Protection Level [Up] 3800 V 5000 V 3800 V 5000 V Short-Circuit Current Rating[lSCPV] 11 ka 11 ka 11 ka 11 ka Maximum Permitted DC Voltage [Vpvdc] 1100 V 1500 V 1100 V 1500 V Voltage Protection Rating (VPR) 2500 V 4000 V 2500 V 4000 V Nominal Discharge Current (8/20 µs) [In] Short-Circuit Current Rating (SCCR) 50 ka 65 ka 50 ka 65 ka Single Unit DIN Dimension 3 TE 3 TE 3 TE 3 TE UL Electrical

7 RayDat Modular DIN Rail SPDs for Signal Line Protection in Photovoltaic Applications RayDat solutions are available in a variety of surge discharge ratings and in voltages from 5 VDC to 110 VDC. The products protect signal and data lines from overvoltage surges and electrostatic discharges created by switching transients in an electrical network. Common applications include protection of DC power and data lines, local area networks (LAN), data circuits, shielded cables, and more. RayDat Benefits Power protection for signal and data lines Modular design available in voltages from 5 to 110 VDC RayDat SBH-3, SPH-2 and SPH-4 one and two pair modular protection options available with or without Quick Connect feature. DIN rail format IEC/EN Categories: D1/C1/C2/C3 The RayDat antivibration locking feature ensures the pluggable module remains secure even in the most severe vibration conditions. RayDat NET 6 POE local area network protection. PV Signal & Data Protection Solutions Surge Protective Device (SPD) SBH-3 SPH-2 SPH-4 RayDat Net 6 POE Electrical Specifications Category D1/C1/C2/C3 Maximum Continuous Operating DC Voltage [UC] 6V 15 V D1/C1/C2/C3 33 V 33 V 320 V D1/C1/C2/C3 33 V D1/C1/C2/C3 L-L P-P 50 V 72 V Nominal Discharge Current (8/20 µs) [In] 10 ka 10 ka 10 ka L-L 150 A Maximum Discharge Current (8/20 µs)[imax] L-G 10 ka Impulse Current (10/350 µs) [limp] 2.5 ka 2.5 ka 5 ka L-L L-G 150 V 550 V Voltage Protection Level at In [Up] Residual Voltage at 5 ka (8/20 µs) [Ures] Rated Spark Overvoltage Single Unit DIN Dimension < 22 V < 42 V < 80 V PG-G V V V L-L 7-10 V V V 2/3 TE 2/3 TE 2/3 TE < 80 V < 700 V L-G V V L-L V V 2/3 TE 2/3 TE < 80 V V V 2/3 TE 1 ka

8 ProSMS 8 Monitoring Solutions for Photovoltaic Applications ProSMS 8 Benefits Supports 8 channels (8 strings/30 A or 24 strings/10 A) 30 A per channel No external power supply needed Optional external rechargeable battery Integrated surge protection for signaling / data lines and inputs Integrated surge counter Robust wireless communication protocols The Raycap ProSMS 8 string monitoring device compares and analyzes minimum and maximum current per string from information collected between two master readings. The ProSMS 8 can quickly detect reverse current flowing back into strings and will reliably monitor solar energy yields to minimize energy losses by providing more accurate data. The ProSMS 8 can help increase the lifetime of a PV system by effectively managing and identifying potentially bad contacts or arcing issues before they become problems. The unit is powered from the PV strings, and an integrated surge counter sends an immediate alarm in the case of a high voltage surge event within the PV installation, thus supporting better predictive maintenance for installed PV plant equipment. The device is easy to install and its enclosure protects against touch voltage. It is able to withstand extreme ambient conditions due to its polycarbonate and polyamide enclosure, and uses extended temperature components to provide a long lifetime in extreme temperature environments. ProSMS 8 Electrical Specifications With or Without Enclosure & Wireless PV Monitoring Device ProSMS 8 Number of Channels 8 Maximum Number of Strings 24 Rated Power Supply Voltage [UC ] DC 90 VDC to 1,000 VDC Voltage Measurement Range 0 to 1,000 VDC Current Measurement Range 0 to 30 A (bipolar) Measurement Accuracy Error <± 1% Power Consumption of Device < 1.5 W

9 String Monitoring Solution Alerts Solar Power Operators to String Failures PV module failures can happen at any time, and not necessarily right before the next inspection when maintenance technicians perform systematic string testing. In order to reliably detect such failures and minimize the associated energy losses, PV plants are equipped with string monitoring equipment. This equipment consists of smart monitoring devices, combiner boxes, collecting current (and voltage) for a string or a small group of strings, and sending this data to the monitoring system where software analyzes the information and identifies low production string conditions. PV module failures at solar farms account for much of the downtime experienced, and adversely affect operating expenditures (OPEX). The installation of Raycap ProSMS 8 string monitoring systems to track the production loss for each inverter helps the operator to make good business decisions about the health of the system modules. String Monitoring Photovoltaic Plant Solution Gateway Datalogger Data Acquisition Combiner Box Switch Battery Cabinet Inverter PV Panel Local Monitoring Core Switch Transformer Power Cable Wired Communication Cable Communication Cable / MODBUS RS485 or Wireless MODBUS Dispatching Center Power Grid

10 ProSMS 8 Features and Benefits Feature Quality WAGO spring terminals The use of long-lifetime 30 A per channel certified at 70 C Current measurements in both directions +/- Measure current from zero ma on Less than 1.5 Watt power consumption Built-in signal line surge protection High speed communication and response time Designed for 247 slaves on bus Response delay and relaxed timing settings No external power supply needed Minimum/maximum value reporting Actual average values/continuous measurements Benefit Excellent contact over entire lifetime No arcing or overheating Can be used with stranded cables without ferules Warranty period: 5 years (3 years for salt water and hot climates) Long-lifetime even in high temperature environments Three strings can be connected in parallel Certified operating temperature at 70 C Ability to quickly detect reverse current flowing back into strings No data loss for energy produced in low light conditions High total energy efficiency Low heat dissipation Protection rate I n = 4 ka Up to bps (compared with other devices at bps) Supports operation with 0 ms delay between device queries on the bus Only short delay between first and last device readout in large PV installations More devices can share the same bus enabling fewer master units Few separately laid cables for separate busses Option for more reliable communication in harsh environments and with high electromagnetic pollution Simple installation Low installation costs Provides real information of minimum/maximum currents per string between two master readings Ability to identify potential bad contacts and arcing problems Real average is available locally in the device Actual average of continuous current and voltage readings for any period of time Average is calculated when master units read measurements and contains all data between two separate reads No value is lost between master reads The device can be read a few times per day The frequency of the readouts can be set up and changed remotely

11 Feature Energy measurement per channel Integrated IP 20 protection Communication Protocols MODBUS communication diagnostic Output delay feature Surge counter Benefit Energy values are readable from the device No need for data processing (energy calculations) High accuracy is produced by energy measurements Any changes to string currents are included in the measured value Ability to detect even small deviations of energy produced between strings with very high accuracy Case protects against touch voltage Wireless MODBUS or MODBUS RTU RS-485 LED Status Two potential free contact closure digital input sources Maximum SPDT relay output operating voltage 250 VAC Communication problems can be sensed before a full interaction to a section/slave is lost Communication quality in all devices can be verified after new site installation, and underperforming sections/slaves detected quickly Ability to remotely control devices installed in the combiner box Triggers immediate alarm in the case of a high voltage surge event in the PV installation Enables better predictive maintenance for PV plant equipment We reserve the right to introduce changes in performance, dimensions and materials in the course of technical progress. Copyright Raycap all rights reserved. No part of this work, nor of the information laid down herein and/or derivable here from and/or developed in connection with, may be reproduced or used in any form or by any means. Legal action will be taken against infringements. This publication replaces previous editions and the content herein is subject to change at any time without notice.

12 Raycap Worldwide Locations Raycap Inc. 806 South Clearwater Loop Post Falls, ID United States of America Iskra Zaščite d.o.o. Stegne 23 A 1000 Ljubljana Slovenia Raycap GmbH Parkring Garching Munich Germany Raycap Cyprus Ltd. 46 Lefkosias Street Industrial Area of Dali 2540 Nicosia Cyprus Raycap S.A. Telou & Petroutsou Maroussi Athens Greece Raycap S.A. Manufacturing Industrial Area of Drama Drama Greece raycap.com info@raycap.com Raycap Corporation SRL 4A, Johann Strauss, 4 Floor, Sector 2, Bucharest Romania Raycap (Suzhou) Co. Ltd. Block B, Phase II of New Sea Union No. 58 Heshun Road SIP, Suzhou Jiangsu Province China Raycap and Strikesorb are registered trademarks of Raycap Raycap All rights reserved. G