Meteorological environmental parameters are the core data basis for photovoltaic power generation forecasting, power plant performance ratio (PR) accounting, operation and maintenance strategy optimization, and power grid scheduling. Real time continuous monitoring of meteorological elements such as irradiance, temperature and humidity, wind speed and direction, and component temperature is an essential configuration for large-scale photovoltaic power plants and distributed industrial and commercial photovoltaic grid connection acceptance. Traditional universal small weather station sensors have low matching accuracy, lack dedicated slope irradiation monitoring for photovoltaics, and weak protection capabilities, making it difficult to operate stably in outdoor photovoltaic fields for a long time; The wiring and installation of split type scattered monitoring equipment are complex and cumbersome, and data transmission is prone to interruption, which cannot meet the standardized long-term monitoring needs of the photovoltaic industry. Jiangsu Jingwei Technology strictly benchmarks the national standard "GB/T 20513.1-2025 Photovoltaic System Performance Monitoring" and has…
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Solar irradiance is a core fundamental parameter for the design of photovoltaic power generation systems, power generation measurement, component performance calibration, and power plant PR efficiency evaluation. The accuracy of irradiance measurement directly determines the rationality of photovoltaic project plans, the authenticity of detection data, and the scientificity of operation and maintenance strategies. Traditional fixed radiation monitoring equipment can only fix a single point for long-term observation and cannot follow the multi-point flow sampling of the detection team; Ordinary handheld irradiation equipment has large spectral response deviation, no temperature compensation, low measurement accuracy, and outdoor temperature difference and angle deviation are prone to data distortion, making it difficult to meet the standardized measurement requirements of photovoltaic detection. To solve the pain points of multi-point, high-precision, and traceable irradiation measurement industry in photovoltaic field, Jiangsu Jingwei Technology independently developed JW-F04 portable irradiance meter based on secondary standard spectral sensing technology. With…
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Internal hidden defects such as hidden cracks, broken grids, virtual soldering, black cores, and fragments in photovoltaic modules are the core causes of the annual decline in power generation, premature scrapping of modules, and fire safety hazards in power plants. Conventional visual inspection can only identify surface damage and cannot penetrate the encapsulation layer to observe internal damage of the battery cell; Traditional fixed EL detection equipment requires the construction of a darkroom, relies on mains power supply, and has a bulky body, making it only suitable for factory workshops and unable to conduct on-site non-destructive testing in outdoor photovoltaic fields. In response to the industry pain points of bulky equipment, dependence on power supply, blurry imaging, and inability to operate by a single person that have long existed in outdoor component defect detection, Jiangsu Jingwei Technology has deeply cultivated electroluminescent infrared imaging technology and newly created the JW-EL2 portable…
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In the context of the continuous deepening of the dual carbon strategy and the refinement and standardization of photovoltaic power plant operation and maintenance, on-site testing of component and string electrical performance has become a core link in controlling power plant revenue, completing project acceptance, and evaluating old power plants. Traditional desktop IV devices are bulky and rely on fixed power supply, making it difficult to follow the operation and maintenance team to scattered photovoltaic fields such as mountains, rooftops, and deserts; Common handheld devices on the market suffer from pain points such as insufficient measurement accuracy, lack of environmental compensation, and weak curve analysis ability, which have long constrained the efficiency and reliability of outdoor testing work. Based on the urgent need for testing the entire photovoltaic industry chain, Jiangsu Jingwei Technology has officially launched the JW-IV12 portable IV tester, relying on years of research and development of photovoltaic…
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The voltage of photovoltaic DC systems generally reaches high voltage levels of 1000V and 1500V. Components, DC cables, combiner boxes, and inverter insulation layers are affected by moisture and aging, construction damage, and water infiltration, which can directly cause a decrease in insulation performance and generate leakage current. This not only continuously reduces power generation, but also poses significant safety hazards such as electric shock and DC fire. According to the IEC61730 photovoltaic safety standard, systematic insulation resistance testing must be carried out for grid connection acceptance and annual operation and maintenance of power stations. However, traditional universal megohmmeters do not have a dedicated high-voltage adaptation program for photovoltaics, lack polarization index analysis, automatic discharge safety protection, and outdoor high-voltage testing poses operational risks. The data cannot meet the evaluation requirements of photovoltaic systems. Jiangsu Jingwei has specifically developed the JW-J25 photovoltaic insulation resistance tester, which is compatible with high-voltage…
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Solar irradiance is the core basic parameter for evaluating the power generation performance of photovoltaic modules, converting standard operating power, and calculating the solar energy resources of power plants. However, ordinary universal illuminance meters on the market have defects such as spectral mismatch, large temperature drift error, single parameter collection, and weak environmental adaptability. The measurement data cannot be used as a basis for photovoltaic acceptance compliance, directly causing distortion in IV curve detection and power generation evaluation data. Jiangsu Jingwei Technology has independently developed the JW-F04 portable irradiance meter to meet the exclusive lighting measurement needs of the photovoltaic industry. It is equipped with a secondary standard photovoltaic dedicated sensing probe, which enables multi parameter synchronous acquisition, wide temperature stable measurement, and multi device linkage calibration. It provides a high-precision and traceable light energy measurement benchmark tool for photovoltaic field testing. Portable irradiation system dosimeter The JW-F04 sensing unit…
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Electroluminescence (EL) detection is the core method for identifying hidden defects such as internal cracks, virtual soldering, and broken grids in photovoltaic modules. Traditional EL equipment has many industry shortcomings for a long time: low imaging pixels, inability to identify subtle defects, the need to build a shading shed in strong light environments, the heavy weight of the whole machine requiring two people to transport, relying on manual visual inspection to read defects frame by frame, low detection efficiency, and seriously slowing down the acceptance and operation progress of photovoltaic power plants. To address the pain points in the non-destructive testing industry for outdoor components, Jiangsu Jingwei Technology has integrated multiple self-developed technologies such as infrared imaging, intelligent optics, and AI image recognition to launch the JW-EL2 portable EL detector, breaking the limitations of traditional equipment that can only operate at night. It achieves high-definition imaging under strong noon light,…
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Against the backdrop of the large-scale development of the domestic photovoltaic industry and the refined upgrading of existing power station operation and maintenance, issues such as component power attenuation, string mismatch, and line faults directly constrain the power generation revenue of power stations. Traditional IV testing equipment has pain points such as insufficient measurement accuracy, bulky body, lagging data analysis, and poor outdoor adaptability, making it difficult to meet the diverse needs of ground power stations, roof distributed systems, industrial and commercial photovoltaic acceptance, inspection, and third-party testing. Jiangsu Jingwei Technology has been deeply involved in the research and development of photovoltaic measurement and testing equipment for many years. Relying on its independent high-frequency sampling and AI intelligent diagnosis core technology, it has launched the JW-IV12 portable IV tester, which has four core advantages: high-precision measurement, lightweight body, fully intelligent analysis, and all-weather protection. It creates a one-stop photovoltaic string…
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Solar irradiance is a core basic parameter for calculating the power generation of photovoltaic power generation systems, selecting and matching components, calculating the performance ratio (PR) of power stations, and formulating operation and maintenance strategies. The accuracy of irradiance measurement directly determines the accuracy of power generation prediction, the effectiveness of fault diagnosis, and the overall revenue of power stations. Traditional irradiance measurement equipment generally has pain points such as insufficient measurement accuracy, single collection of irradiance parameters, poor environmental adaptability, bulky and inconvenient portability, and short battery life, which cannot meet the diverse operational needs of distributed photovoltaic multi-point sampling, large-scale ground power station zoning monitoring, outdoor on-site synchronous testing, project acceptance and certification. With the photovoltaic industry entering a stage of digitalization and refinement, the market urgently needs a portable, high-precision, and multi parameter synchronous collection light energy monitoring device. Jiangsu Jingwei Technology relies on advanced optoelectronic sensing…
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As the core power generation unit of the photovoltaic power generation system, photovoltaic modules suffer from invisible internal defects such as hidden cracks, broken grids, virtual soldering, fragments, PID attenuation, and black core chips, which are the core causes of the module's power decline year by year, hot spot ignition, and continuous loss of power generation in the power station. Traditional fixed EL detectors are bulky and require stable power supply. Components need to be disassembled and transported to the laboratory for testing, which not only incurs high labor and transportation costs, but also poses a risk of falling during high-altitude dismantling operations. They are difficult to adapt to high-frequency outdoor testing scenarios such as distributed roofs, large ground photovoltaic bases, and rapid troubleshooting after disasters. To break through the bottleneck of non-destructive testing industry in photovoltaic field, Jiangsu Jingwei Technology has been deeply involved in electroluminescent infrared imaging technology…
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Against the backdrop of the continuous deepening of the dual carbon strategy and the comprehensive transformation of photovoltaic power station operation and maintenance towards refinement and standardization, various scenarios such as centralized large-scale photovoltaic bases, industrial and commercial distributed rooftop power stations, household photovoltaics, complementary agricultural photovoltaics, and mountain photovoltaics are expanding synchronously. The demand for fast and high-precision outdoor on-site testing is experiencing explosive growth. Traditional desktop IV testing equipment has a large volume, relies on fixed mains power, and is difficult to transport. It can only complete component performance testing in the laboratory and cannot go to the power plant site to carry out string fault diagnosis, engineering acceptance, and power attenuation assessment of old power plants, which has long constrained the improvement of photovoltaic operation and maintenance efficiency. In response to the long-standing testing pain points in the industry, Jiangsu Jingwei Technology has independently developed and launched…
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Solar irradiance is a core basic parameter for evaluating the power generation performance of photovoltaic modules, calculating the theoretical power generation of power plants, conducting resource surveys in the early stages of projects, and verifying the system operating efficiency (PR value). The accuracy of irradiance measurement directly determines the reliability of data throughout the entire process of photovoltaic project design, acceptance, and operation. Traditional simple lighting measurement equipment has poor spectral matching, severe temperature drift, and no planar adaptive calibration, resulting in significant measurement errors under oblique morning and evening lighting, cloudy scattered light, and high and low temperature environments; Large fixed radiation sensors have a large volume and complex installation, making it impossible to carry them to distributed roofs, mountains, and small-scale photovoltaic sites for mobile measurement. There has been a long-term lack of high-precision portable measurement equipment for photovoltaic engineering surveying and on-site performance verification. Jiangsu Jingwei, relying…
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