Photovoltaic power plants are exposed to outdoor environments for a long time, which can easily cause damage to component cables, combiner boxes, and inverter insulation layers due to rain, snow, dust, temperature differences, aging, and construction wear. This can lead to safety hazards such as decreased insulation, leakage, and ground short circuits in the power lines. In mild cases, it can cause power generation losses, and in severe cases, it can lead to equipment burning, electric shock, and fire accidents. Insulation performance testing is an indispensable core link for the safe operation and annual acceptance of photovoltaic power plants. The commonly used insulation testers on the market generally have problems such as insufficient range adaptation, poor outdoor protection, complex operation, and lack of photovoltaic specific testing logic, making it difficult to adapt to on-site detection scenarios of photovoltaic high-voltage strings. Based on the urgent need for electrical safety testing in…
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Solar irradiance is a core fundamental parameter for evaluating the power generation performance of photovoltaic modules, calculating the theoretical power generation of power plants, calibrating IV test data, and optimizing power plant operation and maintenance strategies. In on-site photovoltaic testing operations, small deviations in irradiance values can directly lead to significant errors in component power measurement and power generation revenue evaluation. Traditional ordinary metering equipment has shortcomings such as insufficient accuracy, large temperature drift, poor portability, and inability to synchronize with IV detection equipment, making it difficult to meet the strict requirements of distributed photovoltaic acceptance, large-scale power plant energy efficiency verification, and third-party testing standardization operations. Focusing on the high-precision on-site metering needs of the photovoltaic industry, Jiangsu Jingwei Technology has launched the JW-F04 portable irradiance meter. With four core advantages of high-precision photosensitive chip, wide range adaptive, lightweight integration, and multi device linkage, it provides a professional level…
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Hidden defects such as internal cracks, virtual soldering, broken grids, black cores, and fragments in photovoltaic modules are the core causes of the annual decline in power generation, potential safety hazards of hot spots, and premature scrapping of modules. Traditional electroluminescent EL detection equipment is mostly large desktop models that require the construction of darkrooms, rely on fixed mains power, are heavy and difficult to move, can only be used in factory workshops, and cannot enter outdoor power stations that have been put into operation for on-site inspection. A large number of distributed roofs, mountain photovoltaics, and old stock power stations have long-term internal defects that cannot be investigated, causing sustained economic losses to photovoltaic operators. In response to the gap in outdoor non-destructive testing in the industry, Jiangsu Jingwei Technology has launched the JW-EL5 portable EL detector based on its self-developed technology of infrared imaging and AI image recognition.…
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With the comprehensive expansion of the domestic photovoltaic industry, the demand for on-site performance verification of photovoltaic modules and strings has exploded due to the simultaneous acceleration of household distributed, mountainous agricultural photovoltaic complementarity, and large-scale ground power stations. Traditional desktop IV testing equipment is bulky, relies on fixed power supply, and has a cumbersome testing process, making it difficult to adapt to outdoor scenarios such as rooftop climbing, remote mountainous areas, and rapid post disaster assessments. This has long constrained the efficiency of photovoltaic operation and maintenance, third-party testing, and engineering acceptance work. Jiangsu Jingwei Technology, which specializes in the research and development of photovoltaic testing instruments, has launched the JW-IV13 portable IV tester based on years of experience in optoelectronic performance testing technology. With four core advantages: lightweight body, micrometer level high-precision sampling, adaptive algorithm for all operating conditions, and intelligent data management, it creates a portable mobile…
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Solar irradiance is the fundamental core data for all design, measurement, and operation work in the photovoltaic industry. The accuracy of irradiance measurement directly determines the accuracy of key tasks such as photovoltaic power plant generation prediction, component selection and matching, system efficiency evaluation, fault loss analysis, and engineering acceptance measurement. At present, there are obvious shortcomings in the monitoring system of domestic photovoltaic power stations. Large fixed meteorological stations can only collect single point irradiation data from the station, which cannot meet the needs of mobile measurement for roofs, mountains, and distributed multi-point locations; Traditional simple portable irradiance meters use low-level sensors with poor spectral matching and large temperature drift errors. They can only roughly read a single irradiance value and cannot synchronously collect supporting parameters such as environmental temperature and component backplate temperature. In complex outdoor lighting and temperature environments, measurement data distortion is severe, making it difficult…
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In the full lifecycle management system of photovoltaic modules, internal defects that are invisible to the naked eye are the core hidden risks that constrain the power generation revenue of the power station and shorten the service life of the modules. Minor damages such as hidden cracks, fragments, broken grids, electrode virtual welding, PID attenuation, black heart and black edge, interlayer delamination, etc. in battery cells cannot be identified through visual inspection and IV power testing. Long term operation will gradually expand the fault area, causing significant power attenuation of components and, in severe cases, posing a safety hazard of hot spot fire. Traditional EL electroluminescent detection equipment is divided into laboratory desktop models and early bulky outdoor models. Desktop computers can only be used in darkrooms in factories and cannot be used for on-site testing at power plants; Old style outdoor EL equipment has a heavy body, relies on…
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The global energy transition continues to accelerate, and the installed capacity of domestic photovoltaics has been increasing year by year. The scale of household distributed, industrial and commercial rooftop, mountainous ground, and fishery photovoltaic complementary power stations has expanded synchronously. The photovoltaic industry has officially entered a new cycle of refined operation and maintenance to improve quality and efficiency. The IV characteristic curve of photovoltaic modules and string is the core basis for judging power generation performance, locating hidden faults, and completing project completion acceptance. However, traditional IV testing equipment has long been plagued by industry pain points such as bulky body, single person inability to operate, large outdoor measurement errors, cumbersome data conversion, and insufficient flight continuation. Especially for decentralized rooftop photovoltaics and remote mountainous power stations, the transportation of large desktop testing equipment is extremely difficult, seriously slowing down the efficiency of inspection and acceptance. Jiangsu Jingwei Technology…
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Photovoltaic power plants are exposed to complex outdoor environments for a long time, and equipment such as components, cables, and combiner devices are easily affected by factors such as humidity, aging, and corrosion, leading to a decrease in insulation performance and causing safety accidents such as leakage, short circuits, and fires, posing a threat to the safety of power plant equipment and personnel. Insulation resistance testing is the core project of electrical safety inspection in photovoltaic power plants. Accurate insulation resistance data is the key basis for evaluating equipment safety status and identifying safety hazards. Jiangsu Jingwei Technology Co., Ltd. is deeply engaged in the field of photovoltaic electrical safety testing, and has independently developed the JW-J25 insulation resistance tester. With high voltage precision measurement, multiple safety protections, intelligent self checking diagnosis, and portable and efficient design as its core, it provides reliable technical support for the installation acceptance, regular…
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Solar irradiance is the core basic data for evaluating the power generation of photovoltaic power plants, optimizing system design, and formulating operation and maintenance strategies. The accuracy of irradiance measurement directly determines the accuracy of photovoltaic power plant power generation prediction, the rationality of component selection, and the efficiency of operation and maintenance. In the context of the transformation of the photovoltaic industry towards refinement and intelligence, high-precision, portable, and multi parameter synchronous measurement irradiance meters have become essential equipment for the operation, maintenance, and design of photovoltaic power plants. Jiangsu Jingwei Technology Co., Ltd. relies on advanced sensing technology and environmental compensation algorithms to independently develop the JW-F04 portable irradiance meter. With high-precision measurement, multi parameter synchronous acquisition, strong environmental adaptability, and long-range intelligent management as its core, it provides accurate data support for photovoltaic energy resource evaluation, power plant performance monitoring, and efficiency analysis. Portable irradiation system dosimeter…
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As the core component of power generation in power plants, photovoltaic modules have hidden defects such as internal cracks, broken grids, and virtual soldering, which are key factors leading to a decrease in power generation efficiency and premature scrapping of modules. Traditional EL detectors are bulky, rely on mains power, and have complex operations, making it difficult to meet the rapid detection needs in the field. Jiangsu Jingwei Technology Co., Ltd. focuses on the urgent need for non-destructive testing of photovoltaic modules, breaks through industry bottlenecks, and independently develops the JW-EL5 portable EL detector. With high sensitivity imaging, lightweight portability, and AI intelligent diagnosis as its core, it has become a "portable physical examination device" for photovoltaic modules, providing comprehensive protection for the core health of photovoltaic modules. Photovoltaic power station tester JW-EL5 is developed based on advanced electroluminescence (EL) imaging technology. Its working principle is to apply a specific…
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In the wave of precision operation and efficient power generation in the photovoltaic industry, accurate evaluation of module performance is the core link to improve the quality and efficiency of power plants. Jiangsu Jingwei Technology Co., Ltd. (formerly known as Jiangsu Fuzhun Metrology) is deeply engaged in the field of photovoltaic testing technology. With self-developed core technology and profound industry accumulation, we have ingeniously created the JW-IV13 portable IV tester. With three core advantages of high-precision measurement, intelligent diagnosis, and lightweight design, it has become a "mobile laboratory" for photovoltaic module performance testing, providing reliable support for the entire process of photovoltaic power plant acceptance, inspection, and fault diagnosis. IV power detector The IV characteristic curve of photovoltaic modules is the core basis for reflecting their power generation performance. Traditional IV detection equipment has pain points such as insufficient accuracy, poor portability, and weak outdoor adaptability, making it difficult to…
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Photovoltaic power plants are exposed to complex outdoor environments for a long time, and equipment such as components, cables, and combiner devices are easily affected by factors such as humidity, aging, and corrosion, leading to a decrease in insulation performance and causing safety accidents such as leakage, short circuits, and fires, seriously threatening the safety of power plant equipment and personnel. As a core indicator for evaluating the insulation performance of electrical equipment, accurate detection of insulation resistance is a key link in the electrical safety operation and maintenance of photovoltaic power plants. Jiangsu Jingwei Technology Co., Ltd. focuses on the urgent need for electrical safety testing of photovoltaic systems. We have independently developed the JW-J25 insulation resistance tester, which focuses on high-voltage precision testing, multiple safety protection, and portable intelligent design. We have become the "precise inspector" for electrical safety in photovoltaic power plants, providing reliable technical support for…
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