The top technology of wave energy power generation in China has made breakthroughs in key technical issues and is about to enter industrial development. The current estimate of wave energy reserves is to calculate the power dissipated by waves along the coast. Ocean waves have greater power, the development prospects are quite broad.
Ocean waves have huge energy and have become one of the focuses of research and development by major countries in the world. It is of great strategic significance to seize the commanding heights in this technical field. .
For more than 100 years, scientists from all over the world have proposed many ideas, invented various wave energy power generation devices, and filed more than a thousand invention patent applications. Especially in recent years, due to the energy crisis and environmental pollution, Under tremendous pressure, ocean energy technology that is clean, non-polluting, renewable, environmentally friendly, and does not consume existing resources has received widespread attention from governments and enterprises of various maritime countries. Western countries have taken advantage of their scientific and technological advantages and invested heavily in Various devices have been tested and certain results have been achieved. The more famous ones include "Duck" wave energy conversion device, Pelamis wave power device, AquaBuoy wave energy device Manchester_bobber wave energy device, Fred_olsen_wec wave energy device, Seavolt_wave_rider wave energy device, Oscillating WaveConverter , referred to as OWC) wave energy conversion device, OWEC wave energy device, trident wave energy device, Seadog (Seadog) wave energy device, shrinking channel wave energy conversion device, pendulum wave energy conversion device, oscillating float type Wave energy conversion device, PS Frog and Frog wave energy device, etc.
Our country has also carried out follow-up research on foreign wave technology. Since the early 1980s, it has conducted research on fixed and floating oscillating water column wave energy devices and pendulum wave energy devices. In 1985, the Guangzhou Institute of Energy, Chinese Academy of Sciences successfully developed a wave power generation device for navigation lights using symmetrical wing turbines. A swing-type device was developed in Duguandao, Shandong. In early 2005, in Zhelang Peninsula, Shanwei City, Guangdong Province, my country's independently developed wave energy independent and stable power generation system (using oscillating water column + hydraulic conversion device) was successfully tested in real sea conditions. This is the world's first independent and stable wave energy power generation system. In addition, our country has also developed a wave energy power generation system, namely an oscillating float shore-type wave energy conversion device, which uses an oscillating float as a wave energy absorption carrier, and then converts the energy absorbed by the float through a hydraulic device to drive the motor. Generate electricity.
Judging from domestic and foreign test applications, due to the complexity of the marine environment and the variability of wave energy, the expected results have generally not been achieved. Mainly manifested in the stability of energy output, energy collection, energy utilization efficiency, the impact of tidal changes, cost-effectiveness issues caused by the use of complex structures, safety issues of device structures, anti-corrosion issues of devices, and construction of marine environments Installation issues, compatibility with existing production technology and equipment, and matching issues. As a result, wave energy utilization technology has been making slow progress for many years without making key breakthroughs, which has also led to many people in China being pessimistic about the utilization of wave energy.
For a long time, people have known that waves have huge energy, but they generally believe that wave energy is the most unstable energy source. In applications, emphasis is placed on improving the utilization of single waves. From the inherent characteristics of wave energy, In terms of characteristics, this is very unfavorable. The wave energy that we can normally apply is often several orders of magnitude different from the wave energy that we have during storms. In order to increase the power of a single wave, a single device is often made very large. Once a storm comes, it often exceeds the stress of its structure and materials, causing damage to the device. These include the first one manufactured in the UK (OSPREY), Norway's 500 kW shore-mounted wave energy device (MOWC), China's 3 kW shore-mounted wave energy device This can be verified during the development and construction of the oscillating water column wave power plant.
In essence, wave energy is a randomly generated energy source. Although the wave height, wavelength, period, and position of a single wave vary with time, the wave energy in a certain water area changes slowly with time. , by increasing the coverage of wave energy collection and energy aggregation, strong and stable energy output can be obtained. The above problems have been basically solved. I believe that people will soon be able to use this clean, environmentally friendly, no-consumption, no-emission, environmentally-friendly renewable electricity.