Onboard off grid solar inverter personalized for street lights

Plant by plant decommissioning strategy of coal power in ChinaAs the world's largest coal consumer, China will need to rapidly phase out coal-fired power plants to achieve deep emissions cuts in order to achieve carbon neutrality by 2060 and the global 1.5°C climate target.In 2020, China's total installed coal-fired power capacity will reach 1.08 billion kilowatts, exceeding all other countries combined. Moreover, most coal-fired power plants have come on stream in the past 15 years, leaving them with a longer life than facilities in Europe and the United States, meaning that rapid decommissioning of China's coal-fired power plants risks stranding assets and that further expansion of coal-fired power plants could exacerbate the economic impact, primarily of coal power.The key challenge for China's economic and clean energy transition at this stage is whether it can achieve deep reductions in coal power generation in the coming decades, achieve net-zero emissions in the power system, and complete the coal decommissioning path that matches the 1.5°C global warming target.A study based on the Global Comprehensive Assessment Model (GCAM-China, Global Change Analysis Model) (GCAM),The carbon dioxide reduction path for China to achieve global warming targets of 1.5°C and 2°C, emission trends in the power sector, and generation scenarios for coal-fired units are obtained.To achieve an exit path that matches the 2 °C targets, China would need to accelerate the phase-out of conventional coal plants by 2050 to 2055, which would need to be brought forward to 2040-2045 under the 1.5°C target, with continued construction of new coal plants during this period further shortening the service life of all existing power plants.A. Global CO 2 net emission pathway,B. China's CO 2 net emission pathway,C. Global conventional coal power generation routes,D. China's conventional coal power generation channels,E. China's electricity generation by technologyThe thinner lines in the figure represent the scenario for the IAMC 1.5°C scenario data.The light blue line indicates that schemes are classified as "Less than 1.5°C", "1.5°C Low Overshoot" and "1.5°C High Overshoot".The light green line represents the schemes in the database classified as "Lower 2°C" and "Higher 2°C".As shown in Figure E, China's power generation by technology shows, regardless of the strategy of phasing out coal power, PV will account for an increasing share of the power supply over the next 40 years until it becomes the largest component.It also means that photovoltaic will bear the burden of power generation.

Forecast of PV installations in 2021In terms of module price dynamics, 2021 is not only an exceptional year but is likely to be the first year in modern PV history that China's PV demand growth will be in line with the global average.In previous years, the growth of the global PV market evolved based on the dynamic changes between China and other markets. When China is growing strongly, other markets are growing less, and vice versa -- a pattern closely linked to supply chains.In 2021, we expect growth in most markets. However, this distributed growth will not eliminate the dominance of mainland China and the United States in global demand by adding more than half of the world's PV capacity. The other eight of the world's 10 largest markets together will also account for just 25 percent of global demand, compared with 40 percent in 2019. A further 10 percent are expected to come from another 10 markets. This means that we are seeing a parallel integration and differentiation. China and the United States continue to consolidate their positions, while more and smaller markets take up the rest of the demand. In other words, by 2021, we expect 55 markets to generate between 100MW and 999MW per year, compared with 37 in 2019.We don't expect any major changes in those top PV markets. In 2020, India was the solar market most affected by the Covid-19 epidemic, with installations falling by more than half compared to 2019. Developers now have to do what they can to complete these delayed solar PV projects by 2021, which could make India the world's third-largest market again -- unless it is hampered by continued high module prices. Among the other leading PV markets, we expect Australia to overtake Japan and Spain to overtake Germany again. We also believe that France will overtake South Korea, which is in 10th place. In 2021, we will be keeping a close eye on emerging solar markets such as Colombia, Peru, Portugal, Greece, Ireland, Oman, Saudi Arabia, Zambia, Thailand, the Philippines, and Malaysia. Tendering will continue to be the main driver of the emerging solar market, but there will also be increasing agreement activity and increased installed capacity for commercial and industrial solar PV.

After installation of each part of the PHOTOVOLTAIC system, before starting the operation of the inverter, check whether each part is installed correctly, whether the connection is firm, whether there is wrong connection or missed connection, etc. After confirmation, boot can ensure the safety of the system and prevent accidents.Preparation tools: electric pen, wrench, multimeter, ammeter, insulation resistance meter, etc.Installation inspection procedure1 check the structural partsMainly check whether the bracket is firmly connected, tighten the screw with a wrench, to see whether it is tightened, there is no leakage installed, inverter and distribution cabinet is firmly installed.If the number of batteries is more, it is recommended to match the battery rack, pay attention to the load bearing and insulation.The inverter should be installed on a solid wall, the most suitable height is the same height of the display screen and the line of sight, the inverter should be left around a certain amount of space, convenient for the inverter heat dissipation and movement.Check the electrical partCheck whether the PHOTOVOLTAIC DC cable is damaged and whether the joint is firm. Use a multimeter to check whether the voltage of the group string is normal.Before operation, the total voltage of the series is equal to the sum of the voltages of each component, and the voltage of each circuit in parallel is basically the same, and whether the positive and negative poles of the component are connected in reverse.Where conditions allow, an insulation resistance meter may be used to measure the insulation resistance of the assembly to the ground, the insulation resistance of the ac line fire line and the zero line to the ground.3.Check the batteryBattery before leaving the factory, generally will charge, so to detect the voltage of the battery is normal, if the battery for a long time, will be slowly put out.When multiple batteries are connected in series and parallel, it is necessary to test whether each battery connector is firm. Off-grid system voltage is 12V, 24V, 48V, 96V and other kinds of applications, some applications need multiple batteries in series to meet the system voltage;If the connection cable is not done properly, the battery voltage will also be insufficient.Pay attention to the battery terminal do not connect the opposite, the battery terminal has positive and negative poles, generally red connection positive, black connection negative. Note that there will be a small amount of sparks if the wiring is live.Commissioning proceduresThe photovoltaic off-grid energy storage system, different from the grid-connected system, generally needs debugging before operation. The main reason is that the off-grid project customer's requirements are diverse, and the inverter has also set a variety of application scenarios for the user to choose. 1. Automatic test after startupAfter the off-grid inverter is connected to the battery, it starts to operate. The inverter itself is first detected, and then the module voltage, DC insulation, battery, AC voltage and so on are detected. After all the normal operation, the inverter starts, ac begins to have output, ac load is started, and AC part mainly detects output current, etc.2.inverter settingIn the off-grid system, there are three modes of load power consumption: power supply, battery priority and photovoltaic;There are also four modes of battery charging, namely, municipal power charging, photovoltaic charging, municipal power and photovoltaic charging, and photovoltaic charging alone.These modes are set before the inverter runs.Off-grid inverters generally have a dry contact signal, which can be used to start the external generator when the battery power is low. If this function is needed, the battery's low alarm line voltage and the purpose of setting dry contact signal shall be set.If it is multiple off-grid inverters and parallel machines, it is also necessary to install the function plate of parallel machines. Unlike the grid-connected inverters, off-grid inverters have no automatic phasing function. After the installation of the function plate and signal line, the inverter is started, but does not run first, and a host machine is set, while the rest of the inverters are set as slave machines.The parallel inverter must be connected to the same battery, and the distance between the inverter and the battery should be basically the same to ensure that the inverter flows evenly.3.monitorAfter the inverter is set up, the data collector can be installed. Now the monitoring mode is generally GPRS and WiFi, and the user can choose according to the situation.Register your account and then access the collector. After 10 minutes, you can see the operation data of the inverter from the APP terminal or the computer terminal.The information collected by the off-grid system is relatively large, including the voltage, current, voltage and current of the photovoltaic end, the load end, the voltage and SOC remaining power of the battery, the charging amount and power consumption of the photovoltaic end every day.After the installation of monitoring, you can always remote view the various operating information of the inverter, but also remote set the operating parameters of the inverter, change the operating state of the inverter, some faults can be dealt with directly in the remote, very convenient and practical.conclusionThe steps before the off-grid operation of the system are as follows: test the structure of the bracket, test the electrical part, connect the battery, self-check the inverter, set the parameters of the inverter, connect the photovoltaic modules, install and monitor, and start up the system.Just a few days before the start of the operation, it is necessary to often look at operating parameters, pay special attention to the battery charging current, voltage, SOC remaining power and other parameters.

Manufacturers always put a priority on the raw material sourcing, which makes stable product quality possible for years. The raw materials used for the manufacturing of solar light should be in strict line with the industry standards both in domestic and foreign countries. The performance of the materials will be even premier than the standard requirement so as to meet the certification requirements. Moreover, the manufacturers will follow the market trend to update their material lists rapidly. Customers will be informed through product descriptions about the composition. Known as a reliable manufacturer, Tunto green power Green Power Technology has always been focusing on quality of solar cable. The solar powered street lights series is widely praised by customers. TUNTO off grid solar kits with batteries is fabricated from top quality materials and professional workers. TUNTO solar applications have been patented. The product is gentle for fragile and sensitive pool surface. It is specifically designed with soft cleaning function to protect the floor. TUNTO solar systems, of high safety, supply stable power.In decades of years of development, our team Green Power Technology has established a set of scientific guidelines for the management of factories. Contact us!