Solar photovoltaic water pumping to fight drought and help farmers fight drought and disaster relief

Using solar energy to help fight drought and disaster relief – Solar pumping to fight drought, photovoltaic water pumping to fight drought

1. Global extreme weather leads to severe drought

Over the past four months, continuous extreme drought weather has brought unprecedented drought resistance pressure to my country's northern provinces. From the central government to local governments, from policies and technologies to funds, a top-down, all-round battle to fight drought, reduce disasters and protect grain has begun since the Spring Festival.

According to statistics from the State Flood Control and Drought Relief Headquarters, as of February 8, the drought-affected area of ​​crops in China was 112 million mu. Among them, 15.7 million mu were severely drought-affected; 2.72 million people and 2.84 million large livestock had difficulty drinking water due to drought. Currently, the drought-affected farmland is mainly concentrated in the winter wheat areas of Henan, Shandong, Anhui, Hebei, Shanxi, Jiangsu, Shaanxi, and Gansu provinces, and the drought-affected area of ​​wheat accounts for about 40% of the total sown area. Among them, the drought-affected area of ​​crops in Henan, Shandong, and Anhui provinces totaled 82.71 million mu, accounting for 74% of the national drought-affected area of ​​crops. The difficulty of drinking water for people and livestock is distributed in the hilly areas and pastoral areas of six provinces and regions, including Inner Mongolia, Hebei, Gansu, Shanxi, Shandong, and Henan.

Establishing a scientific farmland water conservancy construction system to break away from the vicious cycle of disaster occurrence-disaster relief-disaster reoccurrence-disaster relief again, and preventing disasters before they happen is the fundamental. Using new energy (photovoltaic water pumping) technology to build a modern automatic irrigation system can promote the upgrading of the agricultural industry and greatly improve productivity.

On January 24, 2011, villagers in Shandong Province checked the drought-stricken wheat seedlings.

2. Current irrigation situation in my country and application of new energy technologies in agriculture

According to statistics, the total amount of arable land in my country is less than 1.826 billion mu, of which only 870 million mu have irrigation conditions, and the other 52% of arable land depends entirely on the weather. Most of the irrigated land has low irrigation standards, and the irrigation facilities are seriously aging and in disrepair. Only 200 million mu of land can ensure a stable yield regardless of drought or flood.

2011 is the first year of the 12th Five-Year Plan, and the central government's work focus will be greatly tilted towards agriculture and water conservancy. In the No. 1 document of 2011, water conservancy construction will become the top priority of the whole year's work, among which the construction of agricultural irrigation facilities occupies an important position. The total investment plan for water conservancy in 2011 will reach 400 billion yuan. We must seize this opportunity to pay off the historical debts of water conservancy construction, pay off the debts of backward agricultural and forestry development, improve water conservancy facilities to combat drought and flood disasters, vigorously save water resources in agricultural and forestry irrigation, and take the road of modern agriculture.

The "Photovoltaic Pumping System" jointly developed by Shenzhen Tianyuan New Energy Co., Ltd. and the State Key Laboratory of Electric Power System of the Shenzhen Graduate School of Tsinghua University uses solar energy application technology to solve the one-time investment of fully automated irrigation (extracting groundwater or river and lake water sources) in areas without electricity. The photovoltaic panels can be used for 25 years, breaking through traditional irrigation technology and models and realizing the modernization of water conservancy construction systems. The photovoltaic pumping system fully supports drip irrigation, sprinkler irrigation, and watering, and has the characteristics of fast construction, no carbon emissions, clean and environmentally friendly, and fully automatic operation, which greatly saves the cost of power grid construction and the difficulty of technical implementation.

The soil conditioner of China Hailin Urban and Rural Group improves soil compaction and restores the soil, ensuring the survival and growth of plants in arid land and deserts. These two Chinese private enterprises in Shenzhen jointly provide solutions for developing agriculture, forestry and desert control on arid and desertified land. In addition, the products of these two companies have been tested in actual use for many years, and the technology is mature and meets the conditions for rapid promotion. If combined with Yuan Longping's excellent seeds, the basic technical conditions for realizing agricultural modernization have been accumulated. Now is the time to vigorously promote the agricultural industrial revolution.

3. New energy (photovoltaic water pumping) product technology supports China's agricultural industrial revolution

Shenzhen Tianyuan New Energy is a supplier of photovoltaic water pumping and photovoltaic grid-connected solutions, and a manufacturer of photovoltaic pumping inverters and photovoltaic grid-connected inverters. The research center is located in Tsinghua Shenzhen Graduate School, and the technical research team is composed of academicians, doctors, and industry experts from the Chinese Academy of Sciences. System products are used in 37 countries around the world, providing global new energy users with globally competitive, cost-effective solutions and application products. In view of the actual situation of agricultural and forestry irrigation in my country, a fully automated solar pumping system (water pumping) inverter has been developed, which has the following main features:

1. It can be used independently in areas without electricity, and is an independent solar energy application system;

2. No need for battery storage, no pollution, and an environmentally friendly system;

3. Directly convert solar power into three-phase AC power to directly drive AC water pumps to pump water; the system is efficient and simple (Figure 2);

4. Fully automated operation;

The above characteristics make agricultural irrigation automation possible and provide basic production tools for the agricultural revolution.

Tianyuan New Energy Photovoltaic Pumping System is composed of photovoltaic pumping inverter, AC water pump and solar cell array. It is widely used in "agricultural irrigation", "desert control", "grassland animal husbandry", "seawater desalination", "urban waterscape", "domestic water", etc. The system runs automatically without manual supervision; it eliminates the need for energy storage device batteries, replaces electricity storage with water storage, and directly drives the water pump to pump water, which has high reliability and can greatly reduce the construction and maintenance costs of the system.