In recent years, the photovoltaic industry has entered the era of stock operation and maintenance, with a slowdown in the growth rate of new installed capacity and an increasing dependence on operation and maintenance efficiency for power plant revenue. In the past, component attenuation, occlusion, hidden cracks, and junction box faults were judged based on experience. Now, owners and third-party testing agencies place more emphasis on data traceability. As a result, IV curve scanning has become the core method for power station physical examination, but many operation and maintenance teams have encountered similar difficulties: the curves measured at different times for the same component vary greatly, with fluctuations in irradiance, inaccurate temperature compensation, and slow equipment response, all of which can make the report lose its reference value. Current voltage power curve detector

There are several common types of portable IV testers available in the market. One type is products from traditional large-scale testing equipment manufacturers, which have complete functions but are bulky, suitable for laboratory and large-scale project acceptance, and are not very convenient to carry to mountains or rooftops. The other type is entry-level devices that focus on low prices and can produce curves, but have average stability in low light, cloudy, and rapidly changing temperature environments, and are prone to problems during later data review. There are also some overseas brands with mature software logic, but their prices and maintenance cycles are not friendly to domestic small and medium-sized operation and maintenance teams.

In contrast, the portable IV tester LX-PV31 launched by Shanghai LAILX is closer to the real scene of on-site operation and maintenance in China. It places equal importance on portability, testing efficiency, and data consistency, making it suitable for various scenarios such as distributed roofs, mountain power stations, industrial and commercial photovoltaics, and module factory inspections. On site personnel do not need to transport bulky equipment, nor do they need to repeatedly wait for the weather to completely stabilize, in order to quickly complete string or component level testing and shorten the troubleshooting process.

The value of LX-PV31 lies not only in measuring a curve, but also in helping operations personnel associate the curve with faults. When encountering abnormal power generation, the IV characteristics can be used to preliminarily determine whether there are problems such as obstruction, diode failure, component hidden cracks, poor contact of the combiner box, etc., and then decide whether to arrange cleaning, fastening, replacement, or further EL testing. This closed loop from data to action is more meaningful than simply recording a set of values.

From the perspective of industry trends, portable IV testers in the future will increasingly emphasize three points: first, lightweight, suitable for different environments such as roofs, mountains, and water surfaces; The second is intelligence, which can automatically identify abnormal curves and provide suggestions; Thirdly, it can be linked and form a complete operation and maintenance chain with EL detection, infrared thermal imaging, unmanned aerial vehicle inspection, and cleaning robots. LAILX has a relatively complete layout in photovoltaic testing equipment, from IV testing to EL testing, insulation grounding testing, to unmanned aerial vehicle EL and cleaning robots. It can provide supporting ideas around the entire life cycle of the power plant, which is also where it sets itself apart from single equipment manufacturers.

For homeowners, choosing an IV tester should not only consider the price and parameter list, but also the stability of the site, after-sales response, and whether the data can support subsequent decisions. A power station that generates one kilowatt hour less electricity will experience continuous losses. If a fault is misjudged due to equipment errors, it will actually increase ineffective labor costs. LX-PV31 is suitable for teams who want to shift their operations from "feeling based" to "looking at data", as well as for third-party testing agencies to improve on-site efficiency. After the photovoltaic industry enters the refinement stage, the truly valuable equipment is not the ability to measure, but the ability to quickly find and solve problems.

Current voltage power curve detector, photovoltaic power station IV power detector, portable IV tester