As a leading global integrator of smart energy systems, Jiaotong University Optics Valley pays particular attention to solutions for smart photovoltaic power station systems.

Shanghai Jiaogu Solar Energy Technology Co., Ltd., as a high-tech enterprise specializing in photovoltaic system integration and smart energy management services, based on a deep industry foundation and experience, utilizes new technologies such as the Internet of Things, cloud computing, and big data to revolutionize the energy industry. It is the first to develop an intelligent monitoring and operation system JD-System, which has been applied in photovoltaic power stations, charging stations, energy management, and other fields, always adhering to innovation With a streamlined and honest business philosophy and core values, we are committed to providing customers with highly systematic, cost-effective, and efficient photovoltaic power generation integrated systems and smart energy management services.

The JDSOLAR intelligent photovoltaic power station system solution is mainly elaborated from three aspects: system design, system installation, and system operation and maintenance.

In terms of system operation and maintenance, JDSOLAR has developed a series of data collectors through intelligent hardware. Based on new technologies such as the Internet of Things, cloud computing, and big data, it achieves an integrated operation and maintenance management system from photovoltaic power plant equipment to data collectors, to cloud servers, and finally to clients. It combines wireless and wired data transmission to deeply mine and analyze data, and objectively display the operating status of equipment in real-time, Provide strong support for monitoring and maintenance management. In terms of big data, the application of big data is reflected through cloud computing, user profiling, power plant asset evaluation, and equipment data analysis, thereby reflecting the solutions of Jiaotong University Optics Valley in photovoltaic applications.

JDSOLAR intelligent operation and maintenance solutions and products are mainly aimed at three types of users: firstly, equipment manufacturers. For equipment manufacturers, we help them solve their needs for equipment after-sales management, remote operation and maintenance debugging, parameter tuning, and other issues, in order to achieve the effect of reducing after-sales costs; The second type of user is the EPC system integrator, which helps them achieve classification management functions, achieve centralized control of the established power plant, and achieve unmanned intelligent operation and maintenance goals; The third category is end users, helping them to real-time grasp the revenue, power generation status, equipment operation status, etc. of photovoltaic power plants. At the same time, the various hardware products of the JD System system can achieve data collection for various aspects of monitoring and operation objects, providing a true and reliable data foundation for data mining and analysis of monitoring and operation. These data are transmitted to cloud servers for relevant storage and analysis; Finally, users can easily and quickly understand the real-time operation status of operation and maintenance objects using the client, and can set, control, and maintain them.

JDSOLAR Photovoltaic Power Station Intelligent Monitoring System is an intelligent monitoring system designed specifically for photovoltaic power stations and distributed photovoltaic power generation projects, which integrates data collection, processing, display, remote control, remote adjustment, abnormal alarm, analysis, and reporting. It can monitor the operation of photovoltaic battery arrays, combiner boxes, low-voltage DC cabinets, inverter cabinets, AC low-voltage cabinets, and other equipment in the station in real-time, and remotely operate the switches in the station Knife switch and gear adjustment equipment ensure the safe operation of the power station, meet the daily operation needs of power station operators and the monitoring needs of superior systems or dispatchers. The JDSOLAR intelligent photovoltaic power station system focuses on monitoring and analyzing the operation status of internal equipment in photovoltaic power stations. Compared to traditional photovoltaic power station monitoring systems, it achieves refined and effective data collection processing and analysis, and the monitoring interface display is more intuitive. It can quickly locate inverter and battery pack string branch faults, effectively improving operation and maintenance efficiency.

The JDSOLAR intelligent photovoltaic power station solution has three significant differences in design concepts compared to traditional power station solutions represented by centralized large machines: firstly, digital photovoltaic power stations, secondly, simpler power stations, and thirdly, global automated operation and maintenance.

Digital photovoltaic power station: Firstly, the existing photovoltaic power generation part is intelligently transformed, making the traditional inverter not only a power generation component, but also an intelligent controller that integrates power transformation, remote control, data collection, online analysis, and environmental adaptation, becoming the center of nerve endings and regional control in the power station; Secondly, by upgrading the existing low speed transmission channels such as RS485, the entire power station will form a high-speed internet network that integrates voice and video communication, is quickly and flexibly deployed, and is maintenance free, laying a highway for information flow in the power station; Finally, the collected complete information of the power plant is uploaded to the cloud for storage, and big data analysis and mining engines are used to achieve intelligent management of the power plant and continuous optimization of its performance.

Making the power station simpler: without redundant facilities such as inverter rooms and DC combiner boxes, and without vulnerable components such as fuses and fans, achieving concise and standardized delivery of the power station. All components of the power station can meet various complex environments such as sandstorms, salt mist, high temperature and humidity, and high altitude. The quality requirements of 25 years of maintenance free and reliable operation make construction and operation simpler, maximizing customer investment protection.

Global automated operation and maintenance: In addition to paying attention to initial investment and power generation, as the stock size of power stations increases, the distribution range of power stations becomes wider, and the importance of power station operation and maintenance within a 25 year life cycle gradually increases. The intelligent photovoltaic power station solution utilizes the digital photovoltaic power station platform to provide globally oriented, integrated, and full process automated management and operation and maintenance methods, improving operation and maintenance efficiency, reducing operation and maintenance costs, making global massive operation and maintenance possible, and fully leveraging the scale operation effect.

Through innovative concepts such as fully digital power stations, making power stations simpler, and automated operation and maintenance, we aim to create intelligent, efficient, safe, and reliable solutions for intelligent photovoltaic power stations, ultimately maximizing the value of power station ownership and operation customers.

JDSOLAR Technical Features and Customer Value

Compared to traditional power stations represented by centralized large units, JDSOLAR intelligent photovoltaic power stations have a series of advantages such as no increase in system investment, high investment return rate, and availability, which are specifically manifested in the following aspects:

1. No increase in initial investment. JDSOLAR intelligent photovoltaic power station, due to its concise design, no DC combiner box or DC distribution cabinet, no civil engineering room, and simple component installation, has an initial investment cost that is not higher than traditional photovoltaic power stations. Meanwhile, due to the small size, light weight, and standardization of intelligent photovoltaic controllers (string inverters), they can be manufactured on a large scale through automated assembly lines, with relatively low labor costs and significant scale advantages.

2. The internal rate of return (IRR) of JDSOLAR intelligent photovoltaic power station has increased by more than 3% compared to traditional power stations. Due to the use of advanced technologies such as multi-channel MPPT and multi peak tracking, the impact of component attenuation, shadow occlusion, inconsistent construction and installation, terrain inconsistency, DC voltage drop, and other photovoltaic array losses has been effectively reduced. The system's PR (PerformanceRatio) value has reached over 82%, which increases the average power generation by more than 5% compared to traditional methods, and the internal rate of return (IRR) has increased by more than 3%.

3. 25 years of reliable system operation and maintenance free design. The JDSOLAR intelligent controller adopts an IP65 protection level to achieve internal and external environmental isolation, keeping the device in a stable operating environment and reducing the impact of external environments such as temperature, wind and sand, and salt mist on the device's lifespan; The system has no vulnerable components, and there are no fuses, fans, and other components that need to be replaced regularly to achieve maintenance free system; Drawing on the design and quality management experience of Huawei's massive global shipment and deployment of communication base station products, we have achieved 25 years of reliability design and life simulation from devices to systems. With strict verification testing, we ensure that system components do not need to be replaced throughout the entire life cycle and operate reliably and economically.

4. The actual utilization rate of the installed capacity of photovoltaic power stations is high. The annual average number of failures in the JiaoJDSOLAR intelligent photovoltaic power station is 30% less. The impact of system failures on power generation is only 1/10 of the traditional plan, and the maintenance cost outside the warranty period is only 1/5 of the traditional plan. Traditional photovoltaic power stations are essentially a series system, with DC combiner boxes, DC distribution cabinets, computer room cooling and auxiliary source power supply equipment The failure of any component such as the inverter can cause partial or total loss of photovoltaic power generation. Due to the need for professional maintenance, the repair cycle is long and the cost is high. The intelligent photovoltaic power station has a simple structure and is essentially a distributed parallel system. The failure of a single inverter does not affect the operation of other equipment. Moreover, due to its small size, light weight, on-site spare parts for the entire machine, it is easy to install and maintain, greatly improving the system's availability.

5. Cascade intelligent monitoring and multi-channel MPPT tracking technology ensure that the power plant is visible, reliable, manageable, and controllable. The intelligent photovoltaic power station performs independent voltage and current detection on each input string, with a detection accuracy more than 10 times that of traditional intelligent combiner box schemes, laying the foundation for accurately locating string faults and improving operation and maintenance efficiency. Multi channel MPPT technology reduces the impact of low occlusion, dust, and string mismatch, resulting in an increase of over 5% in power generation on flat terrain; It reduces the impact of different orientations and shading in rooftop and mountain power plants, and increases power generation by 8-10%; The combination of its tracking system enables the integration of the tracking controller and controller, enabling independent tracking of the bracket and increasing power generation. The intelligent controller and tracking bracket become the best partners.

6. JDSOLAR intelligent photovoltaic power station can be upgraded and evolved. When component technology advances and the operating environment changes, the software of the intelligent controller can be remotely upgraded online, with backward compatibility design and other features. There is no need to replace online running devices, and through algorithm upgrades, the latest technological achievements can be enjoyed, maximizing the reuse of existing devices.

7. Intelligent active grid adaptive technology achieves grid friendliness. By utilizing the advantages of intelligent controllers such as high-speed processing capability, high sampling and control frequency, and control algorithms, we can actively adapt to changes in the power grid and better achieve multi machine parallel control. Better grid connected harmonic quality, better meeting grid access requirements, and improving adaptability in harsh grid environments.

8. Active safety. Reduce the distance of DC transmission and achieve active safety. The safe transmission and protection of DC is a key and difficult point. The intelligent photovoltaic power station adopts a DC free confluence design, where the DC output from the string is directly fed into the inverter to invert AC power for long-distance transmission, actively avoiding safety and protection issues caused by DC transmission, reducing safety hazards caused by DC arc, and making the power station safer.

9. Safe avoidance of PID effects. The power attenuation of components caused by PID will greatly affect investment returns. By automatically detecting the component potential through an intelligent controller and actively adjusting the system working voltage, the negative electrode of the battery board can be positively grounded without the need for grounding, effectively avoiding the PID effect. Due to the fact that the negative electrode of the battery board does not need to be grounded, and the residual current monitoring circuit inside the inverter, the circuit can be cut off within 150ms when a leakage current greater than 30mA is detected, achieving active safety.

10. Intelligent and efficient operation and maintenance. The global and layered deployment of power station management and operation and maintenance systems enables power stations deployed in different locations to be logically managed as one power station. The headquarters can comprehensively grasp the operation status and revenue comparison of each power station, laying the foundation for assessment and management improvement. Distributed in various power stations, large-scale inspections can be carried out through drones. Frontline personnel can interact with the headquarters expert operation and maintenance team in real-time through customized operation and maintenance intelligent terminals for video, voice, location, and fault information. Remote coordination of operation and maintenance between the front and rear can reduce the skill requirements of frontline operation and maintenance personnel, maximize the reuse of headquarters expert resources, achieve optimal personnel configuration, and improve system maintenance efficiency.

11. The introduction of big data analysis engines and expert operation and maintenance systems enables timely identification of potential defects and the exploration of revenue improvement opportunities. Through real-time data collection, cloud storage, and online expert analysis systems, power stations can automatically undergo physical examinations and provide maintenance recommendations based on maximizing profits, such as cleaning recommendations, component replacement, and maintenance recommendations, to achieve preventive maintenance; Accumulate long-term operational data, comprehensively analyze natural environmental factors such as temperature and irradiation, and adjust intelligent control unit algorithms online or upgrade software to ensure that the system components of the power station operate in the best matching state in different environments, achieving maximum revenue.

12. JDSOLAR intelligent photovoltaic power station is environmentally friendly. The intelligent controller has no fan design, achieving a low environmental noise of 29dB; No need for civil engineering equipment room, reducing environmental damage to vegetation and soil; Low electromagnetic radiation, protecting human health. Intelligent photovoltaic power stations have achieved harmonious coexistence between humans and the environment, greatly increasing the applicability of photovoltaic power stations and creating conditions for photovoltaic households.