The increasing scarcity of traditional energy and the environment is getting worse, greatly Laptop Battery promoted the development of new energy, new energy power generation scale rising fast. However, wind power, solar power inherent in their own random, intermittent in nature determine its large-scale development are bound to the safe operation of power peak-shaving and the system has brought a significant impact, there must be an advanced energy storage technology as their support.
Abroad, the study shows that if the total installed capacity of wind power installed capacity accounted for 10% of the proportion of less than rely on traditional power technologies, and increase the water and electricity, gas-fired units and other means, the basic grid can guarantee security; However,Digital Camera Battery if the proportion of 20% or even higher power grid's peak load capacity and safe operation will face enormous challenges. Energy storage technology to a large extent solved the randomness of new energy power generation, volatility problem, you can achieve smooth output of sony DSC-T7 battery new energy power generation, can effectively regulate the new energy power generation power grid caused by voltage, frequency and phase changes, so that a large-scale wind power and solar power convenient and reliable way into the conventional power grid.
China's imminent large-scale development of new energy on the storage industry has a more pressing practical needs. 2020, wind power and solar power generation equipment to break 170 million kilowatts, accounting for the proportion of total installed generation capacity will exceed 15%. However, as China's power system, a high proportion of coal in some areas are primarily peaking capacity of poor heating units, nuclear power has developed rapidly but they can not participate in peak shaving, water, electricity, gas and power generation peak-shaving power of superior performance percentage is too low, leading to the existing power system is weak acceptance of new energy sources.
Energy resources with China's seat away from sony NP-FE1 battery the load more, the forced implementation of wind power, photovoltaic focus on developing large-scale, long-distance transmission, which further increased the power grid operation and control risk. With the new domestic scale of the rapid expansion of power generation, power grids and new energy sources will be more striking, more urgent the demand for energy storage.
Large-capacity storage but also to improve energy efficiency, in order to save the country substantial investment. In response to City peak load power systems add significant investment every year for the power grid and power back-up capacity-building, but the utilization rate is very low. The Case of Shanghai, 2004 to 2006, in order to solve the city's annual increase of 183.25 hours of peak load, only the grid side of the investment each year by more than 200 billion yuan, for which purpose the formation of transmission and distribution capacity of the average annual utilization rate is not to 2%.
But also in response to peak load, shift to high-capacity storage technology, not only investment will be greatly reduced, and because the storage facility sony NP-F10 battery occupies a small, non-emissions, the festival, the energy-saving, emission reduction measures in effect in other peaking can not be compared.
The world's large-capacity storage technology, a diversified development pattern was
The world's main energy storage technology, physical storage, chemical storage and electromagnetic energy storage (such as superconducting magnetic energy storage, etc.) three categories.
Current technology the most improved chemical energy storage, in which sodium sulfur, vanadium flow and lithium-ion battery technology in the security, energy conversion efficiency and economy and achieved a major breakthrough in terms of industrial application matures. sony NP-FM51 battery Sodium sulfur battery charging efficiency are able to achieve 80% of the energy density of lead-acid batteries three times longer cycle life. Japan has a leading position in this technology.
In 2004 Japan's Hitachi automated factory-installed at the time the world's largest sodium-sulfur battery system, when the capacity is 9.6 MW / 57.6 megawatt-hour. Vanadium redox flow battery based material is vanadium, the battery with energy efficiency, electrical storage capacity, to 100% depth of discharge, long life, etc., has entered the commercial phase. Lithium-ion battery is a lithium-based materials, has begun in electric bicycles, electric vehicles and other field applications. In recent years, due to Lithium iron phosphate, lithium iron phosphate nanotechnology and other new materials development and application of greatly improved the safety of lithium-ion battery performance and cycle life, high-capacity lithium battery energy storage power plant is gradually emerging.
Chinese enterprises have mastered the key to large-scale energy storage technologies with independent intellectual property rights. sony NP-FM50 battery Such as Beijing Pu can VRBPOWER Canadian companies through acquisitions, has in the world, has more than 50% of the vanadium battery core of invention patents, including 15 core patents in 24 countries and regions in the world applied.
The key materials in the battery, domestic enterprises have also shown a strong ability to innovate, often breaking the monopoly of foreign enterprises of products and patents blockade. Beijing Golden able to create their own fuel-cell companies use the resin dissolved in the casting method, has been mass-produced perfluorinated ion-exchange membrane, breaking the U.S. market for DuPont's long-standing monopoly.
Shenzhen Star source material through the past five years of independent research and development has now mastered the production of lithium-ion battery membrane key material used in the core technology and production processes, and has been the use of low-cost domestic product, the unique advantage of the rapid breaking of the Japanese, the United States and other country's few companies a monopoly on diaphragm material. The Shenzhen side Denamy technology companies use nanotechnology, sony NP-FR1 battery has successfully developed nano-lithium iron phosphate cathode material, the main technical indicators of the world's leading.
Energy storage technology is toward large-capacity, high conversion rate and the direction of application of low-cost development, which has independent intellectual property rights and the simultaneous advantages of low-cost production in China, providing a rare opportunity to lead. If the policy in place, China's fast-growing storage industry can have a major impact in the global emerging strategic industries, will greatly promote the domestic large-scale development of new energy sources.
China's large-capacity storage industry still faces many institutional and policy constraints
Lack of storage planning. In recent years the rapid development of new domestic energy sources, exposing the preparations of the many deficiencies. On the one hand the development of network planning and power supply out of touch, power grids, could not keep up with the timely development of new sources of energy; the other hand, technological progress is energy storage, as well as energy storage in the new energy development, the special role of the lack of knowledge, energy storage planning and grid, disconnect the power plan. "Two out of touch," a direct sony NP-F550 battery result of the contradictions is that the new energy and power gradual deterioration.
Pricing policies for energy storage power station and return on investment mechanisms missing. Now grid side, power generation side, the user in increasing awareness of the unique role of energy storage technologies, energy storage industry also attracted many investors. However, due to two aspects of price policy is not in place, energy storage industry is a lack of investment return on the mechanism.
The first peak and valley price. As the stored energy is low when the "charge storage," peak "electricity supply" peak and valley price difference is a basic source of income for investment in energy storage. Europe, the United States, Japan and other countries and regions mature peak and valley price policy. canon NB-5H battery In China, except in very few areas have pockets of the TOU rate, the basic failure to implement TOU pricing. There is no peak and valley spread, who is willing to invest in energy storage?
The second is electricity storage. As the energy storage technology to increase power generation equipment use hours and power quality, enhanced power peaking capacity, saving the system investment, promoting a new energy development, there are significant effects of emissions, therefore, should establish a separate storage price policy. But our country is currently no specific storage price of the existing pricing system, the storage of construction and operating costs can not find a channel to divert.
Lack of incentive policies. Although in recent years, China's technological achievements in large-capacity storage and a considerable accumulation of talent, and vanadium flow batteries and lithium-ion batteries and other energy storage technology is a world leader, or even related companies products have been recognized in foreign markets, but the China has not yet an application demonstration project, the Government's large-capacity storage technology, R & D investment is also very small, let alone the application of financial subsidies. In contrast, canon NB-4L battery the U.S. and Japan and other countries to support large-capacity storage technology research and development and industrialization of the intensity of the major applications was unprecedented.
The U.S. government has supported a large-scale energy storage technology to locate new energy development, strategic technology, in the first half of this year has allocated two billion U.S. dollars in support of including a large-scale energy storage battery technology, including research and development. Developed in the United States Department of Energy on the smart grid scheme, the energy storage technology projects, more than all the other items, up to 19, financial support to the greatest.
According to the adoption in 2009 of "stored energy bill," the United States for high-capacity storage investment will provide 20% of the investment tax deductible, for families, factories, commercial centers, distributed renewable energy applications in the storage section, also provides 20% of the investment tax deduction. California also meet the technical requirements, and wind power or fuel cell energy storage system supporting the construction of two U.S. dollars / watt of additional subsidies. In addition to direct support of the Government of Japan early stage research and development, the recent years to support a large number of demonstration projects to encourage large-capacity storage technology popularization and application.
Supporting the management rules and technical standards missing. canon NB-4L battery In addition to economic incentives, the strict technical standards and standardized management, but also drive the development of energy storage industry, an important driving force. Such as Spain and other countries stipulates that all wind power in the Internet before fans to contribute to the power grid to provide short-term forecasts curve and the power curve, the error can not exceed a certain percentage, or they will be punished.
This will take the initiative to adopt Daobi power forecasting techniques and energy storage technology to realize new energy power generation and grid construction of the benign development. But our attitude towards wind power network has not yet mandatory processes and technical requirements, many enterprises believe that as long as the issue of wind power electricity, regardless of how many pros and cons, power grids must be received in full, in this case, the power generation companies have no incentive use of natural energy storage technology.
The promotion of large-capacity storage industry development policy recommendations
The stored energy and new energy development plan simultaneously. In accordance with the grid system to achieve safe operation and optimum efficiency canon NB-5L battery of the principle in the planning of new energy power generation and grid transmission lines at the same time, should propose appropriate storage solutions, clear the scale of development and construction of storage areas and so on. To try to prevent the already in the field of wind power and solar power generation there hair, transmission, storage gap phenomenon.
The implementation of TOU pricing and tariff policy of energy storage. Peak and valley price might be somewhat different in different regions, but it should be as far as power grid peak load shifting and to attract investment and create more space for storage. Storage tariff may refer desulfurization of thermal power electricity prices, electricity prices in the original on the basis of new energy to add a few PCT money, and the formation of a new energy package containing storage tariff. Under the guidance proposed in the government tendering mechanism for the formation of through market competition.
Specification requirements and new energy power generation technologies, canon BP-511 battery and network management. States should put on the new energy and nets mandatory technical standards, to build and network certification and testing system. Implementation of the new short-term forecasts of energy generation to contribute to the reporting system to improve the capacity and the level of short-term forecasts. Complete the full acquisition system, power companies meet the requirements of electricity network should be received promptly and in full, to poor power quality, power generation, large forecast errors of the new energy power generation option to receive, and establish the appropriate punishment mechanism.
To encourage investment diversification. Investment in large-capacity storage power station is not appropriate to apply to countries currently for pumped storage power station can only be made by a wholly-owned grid company building, does not allow other investors equity requirements. In rationalizing the return on investment mechanism to standardize the technical requirements under the premise of network access should be encouraged power producers, power companies, clients, third-party independent energy storage enterprises of any conditional investors to invest in energy storage.
To intensify over arrangements for storage demonstration projects. Through the implementation of a number of energy storage demonstration projects provide an important enterprise for its own energy storage engineering practice opportunities for the future accumulation of large-scale application of technical data and operational experience.
In the demonstration project, in conjunction with the performance of various types of energy storage technologies, in a comprehensive assessment based canon NB-2L battery on the specific uses the appropriate choice of energy storage technology. The early demonstration projects may be first with wind power, solar power combine to explore an integrated model of reservoir scenery. Electric
Network is an important demonstration project organizers and builders, national authorities, upon request, and support the construction of several demonstration projects Grid Corporation of China. Need to be further clear that the sources of technology demonstration projects should be based on the main domestic enterprises, mainly to support their own technological development, can not model the process of using financial subsidies to imply support for foreign parts or the whole machine works.
Increase large-capacity storage technology, R & D investment to encourage diversification of energy storage technology. Energy storage technology research should be ahead of demand for development, and can not wait until a bottleneck when consider increased. Should be a large-scale energy storage technology research and its industrial application of major projects included in the national science and technology.
Since there is currently no fully qualified for an energy storage technology, the requirements of a variety of application areas, and therefore focus on support for vanadium redox flow batteries, lithium-ion batteries key technologies, we should also encourage and support other energy storage technology development. canon NB-1L battery Further increase of the energy storage technology, investment in basic research and encourage original innovation, master intellectual property.
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