In 2015, the continuous topic of the power sector should be the new power reform and the energy Internet, and the country's drastic reform has attracted a round of applause. With the frequent introduction of policies, related industries have also taken advantage of the east wind of policies to develop in line with the trend and enjoy reform dividends. Among them, the energy storage industry is one of them, the introduction of new energy microgrid demonstration project documents, energy Internet concept is generally recognized and vigorously supported, the rapid popularization of new energy electric vehicles, etc., have injected impetus into the energy storage field, 2015 is also known as the first year of energy storage. It can really be said that all forces are pushing together, and the era of energy storage has arrived.
The "future" is bright
1. Energy storage is the key to the development of renewable energy microgrids
With the development of human beings and the use of natural resources, the problem of the tightening of fossil energy has been lit up. At the same time, the large-scale use of petrochemical energy has also brought about increasingly serious environmental pollution problems. This thorny issue has attracted global attention. As the world's most populous country, China is no exception. In 2015, China also made a lot of efforts in energy substitution, and the introduction of the Guiding Opinions on Promoting the Construction of New Energy Microgrid Demonstration Projects (hereinafter referred to as the "Opinions") is one of them.
The development and utilization of renewable energy can not only alleviate the problem of energy shortage, but also eliminate the troubles caused by environmental pollution. Most of the power supply of microgrid is clean energy such as wind power, photovoltaics, and biomass energy, and China's wind and photovoltaic energy is relatively abundant. The development of microgrids in these remote areas not only makes full use of natural resources, reduces waste, but also solves the local electricity problem, killing two birds with one stone. At the same time, microgrids have their own advantages, different from large power grids, microgrid operation is more flexible, is a smart energy comprehensive utilization LAN that can flexibly interact with the public grid as needed and operate relatively independently.
The relevant person in charge of the National Energy Administration said that the new energy microgrid represents the future energy development trend, is an important carrier for promoting energy development and the change of operation and management methods, and is of great significance for promoting energy conservation and emission reduction and achieving sustainable energy development. At the same time, the new energy microgrid is also a specific way to open up the power grid distribution side to social subjects, which is in line with the direction of the new power reform and can create a huge development space for new energy.
However, having said so many benefits, everyone is impatient, but all the theoretical verification and application cannot be ignored, and the large-scale application of microgrids is stuck in energy storage. "The future development direction of China's distributed power grid will be inclined to clean energy generation such as wind, light, and solar energy, and the main characteristics of such energy power generation are discontinuities, and the new energy microgrid wants to use such energy to achieve sustained power generation must rely on energy storage means." Lin Boqiang once said. Energy storage is a buffer zone for new energy power generation, turning unstable power sources into stable currents that can be accepted by large power grids and improving power quality; It is the "reservoir" at the transmission end, which stores and reuses the electricity that cannot be used usually, and is used to cut peaks and fill valleys; It is a "warehouse" of distributed energy, realizing a new power consumption mode of power generation + energy storage. Energy storage is the key to the development of microgrids.
2. Energy storage is the only way for the energy Internet
The "Energy Internet" has risen to the level of national strategy, and vigorous support is the trend of the times.
Relevant researchers believe that the energy Internet is the interconnection of energy, which is "through advanced power electronics technology, information technology and intelligent energy management technology, a large number of microgrids are interconnected to achieve the flow of energy and information and the interconnection of energy peer exchange and sharing network." It can be seen that "a large number of microgrids" is the formation and foundation of the energy Internet, and each microgrid is equivalent to a local area network. The degree of realization of the energy Internet depends on the degree of new energy substitution. This goes back to the topic just now, we have explained that the promotion of new energy microgrids depends on energy storage, a large number of microgrids constitute the energy Internet, so energy storage is the only way to achieve energy Internet.
Yu Zhenhua, chairman of the Energy Storage Alliance, also said that the future energy Internet will be built on the basis of energy management, and energy storage will play the role of the energy chip of the energy Internet to support the digitization of the future energy system.
3. The rapid development of electric vehicles helps energy storage
The rapid popularization of new energy electric vehicles provides broad development opportunities for energy storage.
The power battery is the power source of electric vehicles, and the working principle of the power battery is to first store electrical energy into the battery, and release the electrical energy to drive the car when driving. This applies the principle of energy storage. The "Electric Vehicle Charging Infrastructure Guide", "Charging Infrastructure Construction Guidance" and the revised electric vehicle charging national standard and other policies are about to be introduced, which have greatly promoted the development and popularization of new energy vehicles, and then increased the market demand for power batteries as energy storage, which directly promotes the development of the energy storage industry and the research of energy storage technology.
Bottlenecks remain
The energy storage industry has roughly three key applications: First, new energy grid-connected, including wind power grid-connected and complementary photovoltaics; Second, power auxiliary services; The third is the interconnection of vehicles and electricity. However, the energy storage technology, which is known as the last mile in the energy field, is closely related to the development of the application field, especially the development of new energy.
China's energy storage technology is still in the initial stage of industrialization and has not been put into large-scale application. The reasons are as follows: the technology and performance of energy storage are not mature, and the research and development costs are high; The energy storage market has not yet established a sound industrial chain, the technical problems of key materials for energy storage, the lack of reliability in large-scale applications of energy storage in the power grid, etc.; In terms of policy, the future economic value of energy storage is difficult to estimate, and the enthusiasm of the government is not high.
The development of the energy storage industry faces many challenges, and it will take time to apply it on a large scale. However, in the context of energy shortage and vigorous promotion of new energy development around the world, the development of the energy storage industry is imperative, and the current problem is not whether to develop energy storage, but how to obtain breakthroughs in energy storage technology, how to make energy storage large-scale application in the power system, and how to establish a relatively perfect industry mechanism. (Jiang Zhimin)
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