Oil and coal are important for the development of a nation, its social stability and the lives of people. All countries consider energy a strategic resource.
Environmental problems are a major factor in the 21st Century. They have even affected the survival of humans. The Kyoto and Paris Agreements have brought the world to an unprecedented level of consensus regarding the concept of carbon emission reduction.
The progress in science and technology has led to a gradual decline of carbon reduction by using new energy technologies, which is also a good economic reason for promoting large-scale campaigns. The concept of carbon neutralization and double carbon, as well as the global carbon peak should be promoted at this time.
We cannot ignore China’s carbon emissions. China’s largest carbon emitting industry, the power industry, accounts for over 40% of its emissions. New energy generation should be the first priority in order to meet the dual carbon target.
The future grid will require energy storage.
The amount of power that can be generated is unpredictable due to the intermittent and fluctuating nature of wind and solar energy. Photovoltaic energy generation will change when the sun is young. It starts early, reaches a peak around noon, then falls back and stops at night as the sun sets. Wind power is no different. This imbalance in supply and demand results in an inadequate amount of power during times of high demand and excessive power during periods of low demand.
Frequency fluctuation, an important indicator of the quality of electricity, is another problem that is caused by the volatility.
Generators can be damaged by significant frequency fluctuations, even if they are only a slight fluctuation.
As an example, changes in frequency will affect motor speed. Lights can also have a negative impact on product quality. Heavy damage to machinery may cause accidents. The frequent changes will lead to defective products in every field, but also a significant increase in the electricity consumed by residents.
Frequency instability is therefore a serious problem. It has to be addressed urgently.
The current solution to the problem is desperate. The frequency fluctuations caused by power disturbances increase with the increasing permeability of the new energy. The North China Power Grid will experience four low-frequency oscillations in the power side from April to May 2021.
The primary frequency modulation for conventional thermal power is now increasing dramatically from 20-30 times per day to 700-800. Thermal power units have not been able to meet the demand for frequency modulation of the grid due to their primary frequency modulation capabilities.
Imagine that people are unable to solve the problems of peak regulation or frequency of electricity. Then, the problem will affect the replacement of energy and the achievement of the dual carbon targets.
There is an immediate question: Is there a cleaner, more efficient power source than coal?
Answer: Yes. It is better to use a net than to drain the pond in order to catch fish. The idea of reserving energy in advance was born from the perspective of a long-term growth. Energy storage became a central part of history.
Peak cutting and valley-filling can solve the mismatch in power generation and load. It can also provide auxiliary services to help solve grid instability due to the randomness and volatility of scenic power production.
The energy storage system also provides capacity support and absorbs excess energy. It reduces the “wind and lighting abandoning” and connects instantly to the grid. Everything is in place, except for the east wind. In the past, the development of an industry was not possible without the support of policy. Often, the intensity and pace of policy changes indicate an industry’s maturity.
The heart of energy storage
The electrochemical storage system consists of a battery, a battery management system (BMS), an energy management system(EMS), a power storage inverter and other electrical components.
Batterie pack costs are the most expensive, with a 60% share. Energy storage inverters come second at 15% and battery management system, energy management system, and together they make up 15%. These data clearly illustrate two issues. The battery pack is the major cost of the electrochemical energy storage system. It is also the key link in future industrial chain technology and cost reduction.
The second most important component of the industrial chain is the battery pack and the inverter.
The electrochemical storage system consists of a battery, a battery management system (BMS), an energy management system(EMS), a power storage inverter and other electrical components.
Batterie pack costs are the most expensive, with a 60% share. Energy storage inverters come second at 15% and battery management system, energy management system, and together they make up 15%. These data clearly illustrate two issues. The battery pack is the major cost of the electrochemical energy storage system. It is also the key link in future industrial chain technology and cost reduction.
The second most important component of the industrial chain is the battery pack and the inverter.
Let’s start with battery packs. Lithium iron phosphate battery packs are the most popular choice in energy storage due to their high safety, long cycle life and low price. In 2019, lithium-iron phosphate battery accounted for over 85% of newly added lithium-iron phosphate cells.
This field is a good example of a field that can be expanded. Representative enterprises in the battery pack industry include CATL BYD EVE Energy Pylontech Technology etc.It is interesting to note that the development of battery energy storage has been a long and steep slope, with many iterations. The cost and resource advantages of sodium-ion battery can be used to solve the issue of lithium-ion shortage, as well as the problems of higher-performance solid-state batteries and lithium-air batteries.
The core competitiveness of this accessory, which is one of the most important energy storage accessories available, is reflected by the iteration. Different models are available for PV inverters.The constant introduction of new product, based on faster iteration in energy storage technology, makes the enterprise’s blood-making capability extremely strong and ensures the guarantee of gross margin. Different models are available for different inverters. This is similar to photovoltaics inverters.
The new energy generation replaces the traditional energy. However, its fluctuations and intermittent nature make it necessary to modulate power demand at peak frequencies. Energy storage is a necessary component of the energy replacement path. The future power system will be reliant on energy storage. The energy storage technology is based primarily on battery technology. It has become more affordable and is being promoted on a large scale under the pretext of its performance.
Battery energy storage will soon be a source of new energy.
