Photovoltaic Solutions

  • By Khaleque Insia
  • Published in Services
  • Jul 13, 2023
  • 5.28 Min
Photovoltaic Solutions

Over the last several years, solar energy has gained popularity as a clean and renewable energy source. The Photovoltaic (PV) panel, which turns solar energy into electricity, is one of the most crucial parts of solar energy systems. However, in-depth testing is necessary to guarantee the dependability and effectiveness of Photovoltaic (PV) panels. We will discuss the significance of Photovoltaic (PV) testing solutions and their adherence to global standards in this blog article.

Iconic Engineering Limited possesses extensive experience in the domain of Photovoltaic (PV) Solutions testing and offers a variety of equipment incorporating diverse measurement technologies to cater to a wide range of Photovoltaic (PV) Solutions testing applications.

Why is Photovoltaic (PV) Testing Important?

Photovoltaic (PV) testing is crucial to guarantee the dependability and quality of Photovoltaic (PV) panels. These tests may aid in locating panel flaws or degradation, which may have an impact on how well they operate over time. A panel's efficiency, which is essential for determining its anticipated energy production, may also be determined by testing.

The many sorts of testing that may be performed on Photovoltaic (PV) panels are as follows. Thermal Testing may indicate how well a panel can withstand extreme temperatures, while Electrical Tests can assess the current, voltage, and power output of a panel. On the other hand, Environmental Testing may evaluate a panel's resilience to adverse weather conditions including rain, wind, and hail.

International Standards for Photovoltaic (PV) Testing?

To guarantee that Photovoltaic (PV) panels satisfy certain performance and safety requirements, many International Standards have been created. The most often used standards are UL 1703, IEC 61215, and IEC 61730.

The design qualification and type certification testing specifications for Crystalline Silicon Terrestrial Photovoltaic (PV) modules are laid out in the standard known as IEC 61215. Tests including temperature cycling, moist heat, and mechanical stress testing are included.

On the other side, IEC 61730 offers recommendations for assessing the security of Photovoltaic (PV) panels. To guarantee that the panels are safe to use, this standard includes testing for Electrical, Mechanical, and Environmental Factors.

Underwriters Laboratories produced the safety standard known as UL 1703. It outlines the flat-plate Photovoltaic (PV) modules and panels' safety criteria.

Challenges in Implementing Standards?

The disparity in testing criteria across nations is one of the difficulties in putting these International Standards into practice. The testing criteria in various nations may vary, which may make it difficult for businesses to create goods that adhere to all relevant International Standards.

The need for standardized testing practices presents another difficulty. The consistency and accuracy of the testing process across several labs may be ensured with the use of standardized testing protocols. However, creating these methods may be costly and time-consuming.

Importance of Accredited Testing Laboratories?

When evaluating Photovoltaic (PV) panels, it is crucial to employ recognized testing facilities. Accredited Labs have undergone independent evaluation and have been determined to fulfill certain International Standards for testing accuracy, dependability, and objectivity. Utilizing a certified laboratory guarantees the validity and dependability of the test findings.

Benefits of Adhering to International Standards?

There are various advantages to following international standards for Photovoltaic (PV) testing. It may contribute to the excellent quality and dependability of Photovoltaic (PV) panels, enhancing both their performance and longevity. Additionally, it may aid in ensuring the safety of Photovoltaic (PV) panels, which is essential for safeguarding both people and the environment.

There are several potential solutions available for Photovoltaic (PV) Testing that could provide Iconic Engineering Limited.

It is astonishing to see how quickly, and dynamically solar installations have developed globally in recent years. The transition away from conventional, non-renewable energy sources is primarily to blame. Green energy is being pushed into the energy industry as a result of increased societal awareness and governments' acceptance of responsibility for the environment. Additionally, prices are falling as a consequence of the technology's ongoing advancement. The market's steadily rising energy costs are another factor that makes the economic balance more beneficial for the solar industry. It is a crucial phenomenon for the development of PV systems.

Figure 1: Note: Need to give as much as the similar picture which is given above.

Unfortunately, it is common practice to strive to maximize investment profitability by decreasing quality, which lowers the safety level of the solar installation itself and raises the risk of maintaining and running the facility. Due to this, it is crucial that the installation be carried out in accordance with all existing laws and regulations, as well as all safety requirements following installation. Only by doing the necessary tests, acceptance tests, and routine inspections can we be confident of this. The multi-sheet standard EN 62446, which specifies the technique and range of safety regulation of solar systems, serves as the primary legal foundation in this situation. The danger of electric shock or fire is considerably reduced by adhering to the recommendations therein. Measurements make it possible to assess the effectiveness of a particular installation and its components as well as their safety.

Figure 2: Title should be: Multifunction Meter of parameters of electrical and photovoltaic installations. Also, the picture needs to change but is similar to the picture above.

The tests are separated into category 1 and category 2 tests as well as supplementary tests by the standard. However, you need to have the right measurement tools in order to even be able to begin the examination.

The Multifunction Meter of parameters for electrical and solar systems is a remedy offered by Iconic Engineering Limited. The tool's design complies with EN 61557 and EN 61010 specifications, guaranteeing acceptable accuracy and workplace safety. We will successfully utilize the meter for category 1 tests specified by the EN 62446 standard, which comprise the following:

  1. Continuity of Protective Connections
  2. Earth Resistance,
  3. Insulation Resistance on the DC Side,
  4. Open Circuit Voltage UOC,
  5. Short Current ISC,
  6. Operating Currents and Powers on the DC and AC Side of the Inverter,
  7. The efficiency of the Inverter.

The standard stipulates that all installation tests on the AC side must be completed before category 1 measurements may begin. The HD 60364 standard, in turn, establishes their realm of application. In this situation, the Multifunction Meter will also show its worth.

You may rapidly confirm the proper connections of the modules in the string, their polarity, and their functionality by measuring the characteristics of the PV installation, such as the short-circuit current ISC or the open-circuit voltage UOC. One module may be measured, or the complete chain of panels.

Similar to AC installations, the continuity of protective connections and grounding resistance is tested on the DC side. The difference in insulation resistance testing is that the measurements are made while the system is under voltage, therefore more caution is required. During the operation of both installations, the operational current and power values on the DC and AC sides must be verified. We will confirm the inverter's efficiency based on these measures and compare it to the efficiency claimed by the manufacturer. The findings may be utilized further in the test report since they are saved to the meter's memory.

Furthermore, Iconic Engineering Limited provides various solutions in the realm of Photovoltaic (PV) Testing Solutions.

Insolation and Temperature Meter: This is used for measuring the irradiance and temperature of photovoltaic panels and the environment.

Photovoltaic system meter: It is used for the Inspection of photovoltaic systems in terms of safety of use, according to IEC 62446-1 cat. 1.

CP-PV measuring clamps: It is used for measuring photovoltaic systems parameters such as current, voltage, and power on the DC side.

Earth resistance and soil resistivity meters: It is used for the analysis of the performance of earth resistance measurements in accordance with IEC 61557-5 and IEC 60364-6 standards. In addition, Measurements of the protective conductor’s continuity in accordance with EN 61557-4 with a current of 200 mA.

Thermal imaging cameras for measuring the temperature of solar panels:

  • Detection of hot spots caused by cell damage or localized shading.
  • Detection of overheating bypasses.
  • Detection of overheated overcurrent protections.
  • Identification of overheating cables and connectors.

Digital clamp meter for photovoltaic installations:

  • HVDC voltage measurement (up to 1500 V DC).
  • DC and AC current measurements.
  • Temperature measurement.
  • Current and voltage measurements downstream the inverter, frequency converter, or in the VFD system.
  • Built-in recorder and communication with Sonel Multimeter Mobile Android application.

Note: need some Product pictures which are mentioned above.

In conclusion, it is essential to use Photovoltaic (PV) testing techniques and to follow international standards in order to guarantee the dependability and effectiveness of Photovoltaic (PV) panels. Although their implementation might be difficult, these standards can assist in verifying that Photovoltaic (PV) panels satisfy certain performance and safety requirements. The quality and safety of Photovoltaic (PV) panels may be increased, and the industry as a whole will profit, by using recognized testing facilities and abiding by international standards.