With the continuous large-scale development of the domestic photovoltaic industry, the number of ground power stations and distributed photovoltaic projects is rapidly increasing. The industry has raised higher standards for the portability, measurement accuracy, and fault diagnosis capabilities of on-site testing equipment. Traditional large-scale IV testing equipment is bulky, cumbersome to transport and deploy, and difficult to adapt to complex on-site environments such as mountains, rooftops, and distributed industrial and commercial environments. Operations personnel find it difficult to efficiently complete large-scale string performance screening work. Jiangsu Jingwei Technology is based on the actual pain points of the photovoltaic testing industry and has launched the JW-IV10 portable IV tester. With high-precision acquisition technology, lightweight body design, and intelligent analysis algorithms, it provides a complete on-site testing solution for photovoltaic power plant acceptance, daily inspection, and fault location, promoting photovoltaic operation and maintenance to steadily move towards refinement and digitization. Outdoor IV…
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Solar irradiance is the most fundamental environmental parameter in the photovoltaic industry. Component power calibration, IV curve STC standard conversion, site light resource assessment, power generation verification, and third-party testing report issuance are all based on accurate irradiance measurement. If there is a deviation in the irradiation data, all subsequent performance measurement results will be distorted, directly affecting the performance evaluation and revenue calculation results of the power station. Ordinary simple irradiation equipment on the market generally has shortcomings such as large temperature drift, insufficient spectral matching, and poor outdoor environmental stability. Large desktop irradiation instruments are inconvenient to carry and difficult to adapt to various distributed photovoltaic on-site mobile detection needs such as roofs and mountains. Jiangsu Jingwei JW-F04 portable irradiance meter, benchmarking against A-level measurement standards, balancing high precision and portability, has become the basic standard instrument for photovoltaic field testing, providing reliable light energy data support for…
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Long term exposure of photovoltaic systems to outdoor environments, such as cable aging, damaged insulation layers of components, and moisture and water ingress of wiring terminals, can cause a decrease in insulation performance, resulting in leakage and PID effects. In severe cases, it can lead to equipment damage and even personal safety risks. Insulation resistance testing is an essential safety inspection item for photovoltaic system installation acceptance and annual safety inspection. By measuring the insulation resistance value, it can intuitively evaluate the electrical isolation status of components, cables, combiner boxes, and inverters on the DC side, and detect potential safety hazards in advance. In response to the high voltage characteristics of photovoltaic DC systems, Jiangsu Jingwei Technology has developed the JW-J25 insulation resistance tester, which is customized and developed for the photovoltaic industry. It balances testing accuracy, operational safety, and portability, providing professional solutions for electrical safety testing of photovoltaic…
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A large number of photovoltaic inverters connected to the power grid can cause a series of power quality problems such as harmonic distortion, voltage fluctuations, frequency offset, and three-phase imbalance. If the power quality does not meet the standards, it will not only cause abnormal disconnection of inverters and increased equipment losses, but also seriously impact the public network and fail to meet the requirements of grid connection standards. Power quality testing is the core link in the grid connection acceptance and later fault diagnosis of photovoltaic power plants. Traditional large desktop equipment is inconvenient to move, and ordinary multimeters cannot capture transient anomalies such as harmonics and transient fluctuations, making it difficult to fully evaluate the grid connection conditions. Jiangsu Jingwei JW-DZ65 portable power quality analyzer is developed for photovoltaic grid connected scenarios, with multi-channel synchronous high-speed sampling to fully capture various power parameters on the grid connected side,…
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With the continuous high-speed expansion of the domestic photovoltaic industry, the number of centralized large-scale bases, industrial and commercial distributed, and household photovoltaic projects continues to rise, and the market demand for post operation and maintenance, grid connection acceptance, and component fault screening of power plants is experiencing explosive growth. As a core method for evaluating the electrical performance of photovoltaic modules and series, IV curve testing can intuitively obtain key parameters such as open circuit voltage, short-circuit current, maximum power, and fill factor, and quickly locate issues such as module attenuation, matching imbalance, aging damage, etc. The industry is shifting from large desktop laboratory equipment to lightweight, outdoor portable, and intelligent on-site testing equipment. Equipment portability, measurement accuracy, environmental adaptability, and report output capability have become the four core indicators for procurement selection. At present, there are numerous brands in the domestic photovoltaic testing instrument field, with significant differences…
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Photovoltaic power plants are exposed to complex outdoor environments for a long time, and thermal faults such as component hot spots, damage to junction box diodes, overheating of cable joints, and electrical heating of combiner boxes and inverters are very common. These hidden dangers do not have obvious appearance features in the early stage and are difficult to detect by visual inspection. Once they continue to deteriorate, they can cause component burnout, equipment shutdown, and even fire safety accidents in serious cases. Handheld infrared thermography, with its advantages of non-contact temperature measurement and fast scanning imaging, has become an essential tool for predictive operation and maintenance of photovoltaic power plants. In recent years, the industry's operation and maintenance concept has shifted from post failure maintenance to pre emptive inspection. The market demand for handheld infrared thermal imaging devices continues to rise, and the industry has put forward new requirements for…
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As the core conversion unit of the photovoltaic power generation system, the inverter directly determines the energy conversion efficiency and grid connected power quality of the photovoltaic power station. The performance of the inverter directly affects the power generation revenue and grid operation safety of the entire power station. With the rapid increase in domestic photovoltaic installed capacity, a large number of string, centralized, and energy storage converters have been put into use. The business volume of inverter factory inspection, project grid connection acceptance, and regular performance testing of in operation inverters continues to rise. As the core testing equipment, inverter comprehensive testers have steadily increased market demand. Traditional detection methods rely on multiple discrete instrument combinations for testing, with numerous devices and complex wiring, cumbersome testing processes, difficult data synchronization, and multiple sources of error. Integrated inverter comprehensive testers have become the mainstream choice in the industry. At present,…
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Photovoltaic power generation is highly influenced by environmental meteorological conditions. Meteorological parameters such as irradiance, ambient temperature, component temperature, wind speed and direction, air pressure and humidity are the basic raw data for evaluating the actual power generation performance of photovoltaic power plants, calculating PR values, and conducting comparative analysis of power generation. As the core equipment for collecting environmental meteorological elements, photovoltaic weather stations are widely used in photovoltaic bases, distributed empirical platforms, third-party testing, and scientific research experimental scenarios. With the continuous advancement of refined operation and maintenance of photovoltaic power stations, the industry has put forward higher requirements for the accuracy, long-term operational stability, and data transmission reliability of meteorological monitoring data. Traditional simple meteorological stations have large data errors and short outdoor life, which are difficult to meet the needs of high standard projects. The main representative enterprises in the current domestic photovoltaic weather station market…
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Hidden cracks, broken grids, virtual soldering, and impurity defects in photovoltaic modules are the core hidden dangers that affect the power generation efficiency of photovoltaic power plants and shorten the service life of modules. These hidden faults cannot be detected through conventional appearance inspection and IV testing, and must be accurately investigated by EL infrared detection equipment. In recent years, the photovoltaic industry has become increasingly strict in controlling the quality of components, and power station operation and maintenance have shifted from traditional fault maintenance to preventive testing. Portable EL detectors have become essential equipment for photovoltaic project acceptance, daily operation and maintenance, and component quality inspection. In 2026, the entire photovoltaic industry chain will be improved in quality and efficiency. The market has put forward new requirements for the imaging clarity, dark light capture ability, portability, and operational efficiency of EL detectors. Traditional fixed EL equipment is bulky, difficult…
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Irradiance is the core basic parameter for calculating the power generation of photovoltaic power plants, evaluating component performance, calibrating power plant efficiency, and conducting photovoltaic scientific research experiments. Accurate irradiance data is the key to ensuring the precision and dataization of photovoltaic power plant operation and maintenance. With the comprehensive implementation of refined operation and intelligent control in the photovoltaic industry, the industry's requirements for irradiance detection accuracy, real-time performance, portability, and data stability will continue to upgrade by 2026. As the core instrument for outdoor photovoltaic operations, portable irradiance meters are widely used in scenarios such as power generation evaluation, component power calibration, environmental monitoring, scientific research and testing, and engineering acceptance. Traditional old irradiance meters have problems such as large accuracy deviation, significant temperature drift, slow data response, poor portability, and inability to intelligently transmit parameters, making it difficult to adapt to the requirements of fine photovoltaic detection…
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In the fields of electricity, photovoltaics, electrical equipment maintenance, industrial distribution, etc., insulation resistance testing is the core process to ensure the safe and stable operation of electrical equipment, avoid safety hazards such as leakage, short circuit, and breakdown. As the core instrument for electrical safety testing, the insulation resistance tester can accurately detect the insulation performance of cables, motors, transformers, photovoltaic module lines, and distribution equipment. It is an essential equipment for power operation and maintenance, engineering acceptance, and equipment maintenance. In 2026, the safety standards of the domestic power industry will continue to upgrade, and the safety testing of industrial electrical, photovoltaic power, and civil distribution will become increasingly standardized. The market has put forward higher requirements for the detection accuracy, voltage resistance, safety, portability, and intelligence level of insulation resistance testers. Traditional insulation resistance testers are cumbersome to operate, have unstable readings, low withstand voltage levels, poor…
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With the continuous promotion of the construction of new power systems, the scale of grid integration of new energy such as photovoltaics, wind power, and energy storage continues to expand. The landscape of industrial and commercial electricity, municipal distribution, and factory production electricity fields is becoming increasingly complex, with frequent power quality problems such as harmonics, voltage deviations, frequency fluctuations, three-phase imbalances, and abnormal power factors, directly affecting the safety of electrical equipment, production efficiency, and grid stability. As a core equipment for identifying hidden dangers in the power grid, optimizing power quality, and ensuring stable operation of the power system, the power quality analyzer is widely used in scenarios such as new energy grid connection testing, industrial and commercial distribution operation and maintenance, power engineering acceptance, power grid quality inspection, and factory energy efficiency optimization. By 2026, the intelligent and refined operation and maintenance of the power industry will…
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