Sci - Tech - Env

After nearly eight months since signing the contract to supply two additional super-heavy STS (ship-to-shore) cranes weighing 3,400 tons to the Gemadept - CMA CGM, two STS cranes number 7 and 8 of the Gemalink project have formed after super erection.

On October 26, 2021 at Hefei, China, Sungrow, the global leading inverter solution supplier for renewables, rolled out the brand-new energy storage system -- ST129CP-50HV Series, for the APAC commercial & industrial market. This powerful product proves the world’s best C&I ESS solution featuring simplicity, security, intelligence and cost-efficiency. It supports various applications including demand management, peak & valley arbitrage, self-consumption, power backup and micro-grid. With these cutting-edge technologies and full-scenario applications, the ST129CP-50HV Series will empower both your life and business.

In some places of the world, the power grid can be due to unstable supply or planned shutdowns via programs such as“load shedding” and can last an unknown amount of time. During this time, a standard grid-connected solar PV system will also shut down. How can we ensure that a solar PV system continues to work during these temporary, but often lengthy, power outages? This Solis seminar brings you solar PV + diesel generator hybrid system solutions and a discussion of related issues.

Grid transmission cables are usually aluminum core. Therefore, in the construction of PV plant projects in residential and commercial areas (especially household PV plants), many users will use aluminum core cables to directly interface with inverter output ports or circuit breakers ports. This can cause many safety problems. This Solis seminar will share with you the correct connection of copper and aluminum cables.

In PV systems, there can be errors caused by problems on the grid side. As an important operating function of a solar PV system and the grid, inverters are very sensitive to grid problems and will respond quickly. Among them, grid imbalance faults, although rare, can easily affect inverters, PV systems and sometimes even loads. In this Solis seminar, we will share information on "grid unbalanced" or G-PHASE errors that appear in PV systems and their solutions.

The working environment of a PV plant is relatively complex, and extreme environments such as high/low temperature, humidity, salt spray, heavy sand and other harsh environments, can test the reliability and environmental adaptability of the PV system. More and more PV plants are being built in water, desert, and in coastal areas.

As a result of the ongoing global climate crisis, extreme weather events have increased again this year. Heavy rainfall bringing with it more damaging flooding in many regions of the world with extreme flooding seen across Asia and Europe during July. These extreme conditions not only impact on our lives but can also have devastating effects on solar PV systems.

During the operation and maintenance of a solar PV plant, often power off and power on the inverter, which is normally related to the safety of equipment and the personal safety of O&M personnel but is there anything specific we should look out for during what is seemingly a very simple process? In this article, we will share some relevant tips for you.

In some special countries and regions, the grid structure involves split-phase grid, but if there is no split-phase inverter when installing PV system, can the conventional single-phase inverter be connected to the grid? What problems should we pay attention to? We will share them with you in this Solis seminar.

The Solis EPM accessory, as an energy control device, has an enormously powerful function. In addition to controlling the energy output of the PV system, it can also be used as a reactive power adjustment and power factor compensation device. During installation we hear common questions being asked so in this episode of Solis Seminar we’ve collated the most frequently asked questions and answered them for you.

In PV systems, grid over-voltage faults (OV-G-V0X) can occur frequently, especially in areas with weak grids and high solar PV grid-connected capacity. Such faults are common and in this episode of Solis seminar, we will share with you the causes of “OV-G-V0X", and how to rectify the issue.

Recently, JinkoSolar Holdings Co., Ltd. ("JinkoSolar" or "Company") (NYSE code: JKS), one of the largest and most innovative module manufacturers, announced that it has partnered with one of the major module company in Vietnam and signed the first batch of residential energy storage orders. For the Vietnam market, the launch of JinkoSolar's residential energy storage system will act as a strong support in developing local power infrastructure and providing more stable electricity to meet the residential needs.

On June 14th, 2021, Doosan Vina successfully delivered the first shipment weighing 1,560 tons of main structural equipment under the Jawa 9 and 10 to the Jawa Thermal Power Plant in Indonesia after more than two months of production.

Potential Induced Degradation (PID) is a phenomenon which affects some PV modules with crystalline Si cells and leads to gradual deterioration of performance. The degradation can be as much as 30% or more after a few years. Some module manufacturers are already working to develop countermeasures by using new materials, but the general trend to three-phase systems and system voltages more than 1,000 VDC is currently exacerbating the problem rather than alleviating it. In addition to negative earthing of the PV array, Solis now offers a simple technical solution to prevent this reduction in power of PV modules. This Solis Seminar first gives a brief overview of the PID effect and then explains how the Solis built-in PID Recovery module works and when it can be used.

On June 4, 2021 at SNEC 2021, Shanghai, China, Huawei’s smart string energy storage system (ESS) for residential use, the LUNA2000, received 2PfG 2511 and VDE-AR-E 2510-50 certificates from TÜV Rheinland, a Germany-based testing and certification service provider. Li Weichun, Global Head of Power Electronics Business Segment and General Manager of Greater China Solar & Commercial Products at TÜV Rheinland and Zhou Tao, Vice President of Huawei Smart PV, were present at the award ceremony.