Beijing Shunzhen Green Harbor’s 6.6MW plant (5.5MW flouting Plant and 1.1MW on the rooftop) distributed photovoltaic power generation project was successfully connected with grid by the end of December 2019. This project was commissioned with Ginlong Technologies GCI-50K and GCI-60K-4G inverters, which marks the official commissioning of the Solis string-type floating PV power plant.
The project is located in the central port of Shunyi, Beijing. This project is a floating PV system with very high humidity; however, because of the special Climate and temperature condition on site, the inverter needs to support the installation plan with a horizontal inclination of 15 °. Through the docking communication between field personnel and Solis technicians, and experimental simulation tests, the technical problem was successfully solved. The inverter system was running with full efficiency. We can monitor the operation data in real time and transmit the data to Shunzhen Green Harbor’s platform by using the card designated by Beijing energy conservation center.
100% global-renowned components:
Solis is known for using components of internationally renowned brands for a long time, and these components have a reliable quality guarantee regardless of the operating temperature range and the materials and processes.
Integrated aluminum metal alloy shell and large area radiator:
The weight of the Solis inverter radiator is almost two-thirds of the overall body weight. This greatly increases the heat dissipation area of the inverter and ensures the efficient cooling of the inverter. The housing is an integrated aluminum alloy panel, which Tightly connected, the heat of the components can be directly transmitted to the aluminum alloy shell through the heat sink, forming a heat dissipation path of device → heat sink → shell → air. In addition, the heat of the components can be conducted to the case through the air inside the inverter, and then radiated to the outside air through the case. In addition, external inductance structure design which Ginlong adopted, could improve the heat dissipation performance of the inverter greatly. Even the inverter 15 ° installation can ensure good thermal performance. In addition, the measured ambient temperature of Solis inverter can still guarantee 110% full load operation which greatly improves the energy output of the system.
Intelligent air cooling technology：
Solis inverter can intelligently control the shutdown of the fan. When the inverter temperature reaches a certain value, the inverter controls the fan to start and cooperate with the radiator to dissipate heat. When the inverter is running at full load, the fan stops working and the inverter enters a natural cooling state. This improves the effectiveness of the fan’s working time and greatly extends the fan’s service life.
Built-in anti-component PID effect design：
When the battery module works above the water surface, the inverter is prone to PID attenuation. The Solis inverter has an anti-PID module built into the inverter. When the inverter stops in the evening, the module takes power from the AC side and adjusts the output voltage, injects voltage between PV and PE to reach the PV-pair of the panel. Ground potential eliminates the negative voltage of the PV-ground and plays a role in suppressing PID.
More reliability and economical：
Due to the special installation environment of this project, the inverter must have extremely high reliability. Solis string inverter has IP65 protection level, waterproof and dustproof, maintenance-free. The entire system is simple, eliminating supporting and auxiliary equipment as much as possible, reducing failure points and eliminating wearing parts; reducing the failure rate of surface systems and the number of manual inspections. In addition, Ginlong inverter passed a lot of reliability tested under extreme conditions, such as: high altitude and low air density test, direct air high pressure cycle test, high intensity ultraviolet radiation test, high intensity salt spray test, radiator ash coating test, limit Day and night temperature difference long-term cycle test (1500 cycles, -40 ℃ to 70 ℃), surface attached ice test, extreme environment test (high salt fog area, desert area, high altitude area, high humidity area), etc.