The hottest smart grid makes it possible for new e

Smart electricity makes new energy power generation possible

with the active promotion of new energy power generation, public utilities are under increasing pressure on power distribution, such as management obstacles and financial constraints. The challenges faced by technology are very clear. The old mechanical power distribution network can no longer meet the needs of new energy development

the development of smart electricity will solve the difficult problem of new energy power generation, which has become the consensus of all countries. At present, China's smart electricity alone last year will increase the cost of more than 4 billion yuan, and the construction of power has also begun. China's digital electricity covers all links of power generation, dispatching, transmission and transformation, distribution and end users. The linearity of sensor elements has reached a high level, which is the primary stage of smart electricity

domestic power construction is relatively lagging

at present, domestic power construction is in a relatively lagging state, especially in the development of new energy industry, the supply of new energy power generation makes the problem of backward power development more prominent

taking wind power as an example, the difficulty of wind power is the most urgent problem to be solved in the development of domestic wind power industry at present, and there has long been a consensus in the industry

on the one hand, because the construction of wind farms requires a large area of land, domestic wind farm development areas are generally concentrated in remote areas, which is precisely where electricity is relatively weak, and the bearing capacity is limited. Moreover, the load in remote areas is relatively small, making it difficult to absorb the electricity generated locally. It is reported that China's wind energy resources are mainly distributed in Inner Mongolia, Hebei, Gansu and Northeast China. In 2008, Inner Mongolia, Hebei, Gansu and Northeast China had a cumulative installed capacity of 8.65 million KW, accounting for 71.2% of the country, and the load in these areas is much smaller than that in economically developed areas in eastern provinces and cities

on the other hand, wind power will also cause power quality degradation and harmonic pollution, and large-scale wind farms will cause instability of electric voltage and frequency. Due to the instability of wind power, it has an impact on the weak power in China, and the unwillingness to connect power makes the utilization hours of wind farms too low to form a scale effect, resulting in the internal return on investment of wind power projects lower than the social average of 8%, which is lack of investment attraction

smart power will break through the bottleneck of new energy development

Yang Xiaosheng, chief engineer of Guodian Longyuan Power, said in an interview that since this is the period of structural adjustment of the wind energy industry, and the current wind power market is mainly in China, the financial crisis has little impact on the domestic wind energy industry. However, due to the impact of power planning and construction speed, the difficulty of wind power is the main difficulty of the wind power industry at present. The low density, instability and discontinuity of wind power make the power generation up and down, and some local areas have a large capacity, so electricity is inevitably "unbearable"

at present, the lagging development of domestic electricity has become the bottleneck of the development of new energy. The development of smart electricity will solve the difficult problem of new energy power generation, which has become the consensus of all countries. Smart electricity emphasizes the goal of achieving clean, efficient and interactive on the basis of safe, reliable and high-quality power supply

developed countries such as the United States and Europe have started large-scale investment in the construction of smart electricity, and the construction of smart electricity in China has also begun. At present, the construction of digital electricity in China is the primary stage of intelligent electricity, covering all links of power generation, dispatching, transmission and transformation, distribution and end users. Including: information platform, stability control system, flexible AC transmission, automation system and power management acquisition system. At the UHV International Conference held at the end of May, Vice Premier Zhang Dejiang said that China will actively explore the development path of smart electricity in line with China's national conditions from the perspective of reality. This is the first time that China's top leaders have expressed their attitude towards smart electricity in public

at the meeting, the State Grid Corporation of China announced that it would promote the construction of strong smart electricity in three stages: from 2009 to 2010 is the planning pilot stage, focusing on the development planning of "strong smart electricity", formulating technical and management standards, and carrying out key technology research and development and equipment development, as well as pilot work in all links; From 2011 to 2015, Lou Huafen and Gao Xizhu signed a cooperation agreement to speed up the construction of UHV and urban and rural power distribution, initially form an intelligent power operation control and interactive service system, and achieve major breakthroughs and wide applications in key technologies and equipment; From 2016 to 2020, a unified "strong smart electricity" will be built in an all-round way, and the technology and equipment will fully reach the international advanced level

according to the relevant sources of domestic appliances, by 2020, the national investment in UHV will exceed 60 billion yuan, which can actively help customers improve the sustainability of products by 00billion yuan, much higher than the 406billion yuan previously planned. It is understood that the newly planned 61 UHV substations have a variable capacitance of about 580 million KVA

it is reported that the formulation of smart electricity standards is a huge project, which cannot be completed by an organization. At least 15 relevant institutions have participated in formulating the implementation standards of smart electricity in the United States. Douglas said that according to his understanding, at present, IEC (International Electrotechnical Commission), IEEE (Institute of electrical and Electronic Engineers), NEMA (American Electrical Manufacturers Association) and EPRI (American Academy of electrical Sciences) have made achievements in smart electricity standards. On May 18 this year, the U.S. Energy Administration issued 16 standards related to smart electricity, including energy conservation, sharing, electricians and communications. Among them, a few companies including IBM have also become the actual standard setters

the American household appliance manufacturers association (AHAM) established a special smart electricity working group in October last year. In addition to cooperating with the National Institute of standards and Technology (NIST) and EPRI to develop smart electricity standards, the working group will also be committed to studying smart appliances that adapt to the latest smart electricity technology. Such household appliances will work together with electricity efficiently, enabling consumers to set the power and time of equipment independently, reduce or not use electricity during peak power supply, and even choose alternative renewable energy sources such as solar energy and wind energy, so as to improve energy efficiency, save electricity charges, and help improve power supply security

Douglas said that whirlpool, an American household appliance manufacturer, has begun to develop smart electrical appliances, while Chinese household appliance manufacturers still know little about smart electricity, so they should actively pay attention to the development of this new technology field