Smart Grid becomes the future grid development direction

With the development of the power industry, smart grids have become the development direction of the future global power grid. The future trend of China is moving toward new energy. However, the proportion of traditional energy sources, including fossil power generation and nuclear power, still dominates and dominates. This is a real problem in many countries including the United States, but the development of smart grids can reduce the overall share of thermal power generation, or use energy in a more efficient and smart way, thereby reducing carbon emissions and other pollution. The smart grid has become the development goal of our country in the future. At the same time, the smart grid has brought great benefits to local economic development.

China's smart grid construction target clear

The situation of smart grids in all countries is similar, but different countries have different focuses. According to specific national conditions and characteristics, some countries have found new ways of energy development, or have eliminated some traditional power generation methods. For example, if Germany abandons its nuclear power, it will turn to new energy as a priority.

All countries in the world have begun to rob the huge market of smart grids. The United States regards the development of smart grids as one of the important pillars that will drive the economy of the future. The EU plans to build a grand plan for the super power grid. Germany, France, Belgium, the Netherlands, Luxembourg, Denmark, Sweden, Ireland and the United Kingdom hope to formulate a new round of planning and establish a high-voltage DC grid across the European continent.

And China’s technology research and development in this area will play a leading role. The development of its smart grid is also unrepeatable and unique. The current situation in China is very exciting. From the basics of gradual advancement of transmission grids, the pace of construction is rapid. The difference between China and Europe and the United States in smart grids is that the demand for personal and household energy in Europe and the United States is very large, and the current emphasis is on consumption. End, we need to educate consumers to save energy. The same point lies in the demand for long-distance power grid transmission. How new energy is connected to the power grid for long-distance transmission is an important issue in all countries. China also faces this challenge. The key technology to solve this problem is to synchronize the phase shifters. Cooperation between China and the United States in this area will have great prospects. The use of synchronous phase shifters in China has exceeded that of the United States.

At the same time, the large-scale use of UHV power grids is mainly due to imbalances in energy supply and energy consumption across China, which will greatly promote the development of smart grids in China. The smart grid specifically refers to a large and complete power system that can connect millions of sensors to an advanced communications and data acquisition system. Compared with traditional grids, smart grids have obvious advantages in the four major areas of power generation, transmission, distribution, and power consumption. The smart grid has become a strategic industry with concentrated investments in all countries of the world. The smart grid realizes energy conservation by optimizing the supply and demand of traditional energy and new energy, solving energy structure mismatch issues through UHV technology, and improving the stability and efficiency of the overall grid through high-efficiency power distribution technology, which is the only way to cope with energy crisis.

At present, our efforts in UHV are very praiseworthy. Other countries may have some small-scale UHV lines, but they are limited to point-to-point transmission. China's large-scale UHV transmission will accumulate a lot of experience and the research and development of related technologies will also play a leading role. Once China establishes such a series of complete power grid systems, it will become the largest operating country for a 1000-kilovolt grid. In particular, under the circumstance that the technical standards of various countries have not been unified, China will actively participate in the formulation of global standards and expand market dominance while preparing independent technical standards based on economies of scale.

In this development process, China will have a total investment of 3.45 trillion yuan in the national power grid from 2009 to 2020, of which an intelligent investment of 384.1 billion yuan, accounting for 11.1% of the total power grid investment, will build a strong smart grid network in the next 10 years. At the same time, 2011-2015 is the comprehensive construction phase of the smart grid. From 2016 to 2020, the company will lead the promotion phase, complete a unified and complete smart grid network, and fully achieve the international advanced technology and equipment.

When China completes the development of the smart grid in the early stages of its development in 2020, it will invest more resources to accomplish the intelligentization of existing grids. In order to create a nationwide smart power network.

Smart Grid Actively Supports Local Economy

Strong smart grid actively supports local economic development This year, Shandong Gaoqing County Power Supply Company actively seized opportunities and promoted projects, continued to increase the investment in power grid construction and transformation, and vigorously implemented rural power grid reconstruction and upgrading projects and urban distribution network automation projects. Promote the integrated and coordinated development of urban and rural power grids, and actively support local economic development with a strong smart grid.

Scientific planning "navigation" construction. Adapt to the requirements of the “big planning” system, take the initiative to explore urban and rural planning, understand the local economic development context, incorporate the company’s power grid planning into the local economic and social development plan, and timely implement the 12th five-year plan revision of the county power grid, with a scientific plan. Navigation grid construction. During the “Twelfth Five-Year Plan” period, the total investment of Gaoqing Power Grid will reach 1.711 billion yuan, which is nearly 6 times that of the “Eleventh Five-Year Plan” investment. The scale of the investment and the number of construction projects all set record highs.

Continue to increase investment. On the basis of a grid investment of 107 million yuan in 2011, the company's 2012 grid investment reached 294 million yuan, with large investment to ensure a major leap in power grid construction. Mainly include the construction and transformation of 9 new substations, new shelves and transformation of 364.9 kilometers of high and low voltage lines, replacement of 5127 rural meter boxes, and 161 new distribution transformers; complete the distribution automation in the county center area to realize a household-to-table coverage 100%.

The key projects are proceeding in an orderly manner, completing the pre-registration procedures for 6 engineering projects such as the 220-kilovolt Tianyuan Power Plant, investing 74.12 million yuan in the 110-kilovolt Dali substation, and investing 37.04 million yuan in the distribution and automation of the county center. The 35 kilovolt high-speed line breaking project is also under construction and will be completed by the end of the year. The renovation and upgrading of rural power grids was speeded up. A total of 55 medium- and low-voltage rural power grid reconstruction projects were completed. A total of 29 power-use villages were reconstructed, and 15 new/renovated 10-kilovolt lines/85.865 kilometers were converted, 64 kilometers of low-voltage lines were reconstructed, and 3622 table boxes were replaced. , 109 power distribution terminals were installed to improve the health status and power supply capacity of rural power grid equipment, benefiting 29,000 residents.

Serving county and county government centers. Supported the construction of key county projects, and invested 8.46 million yuan to complete the construction of relevant projects such as Longhua Chemical Line, Kaitai Chemical Industry, Guangqing Road Extension and Daluhu District Renovation, and completed the relocation of 22 10 kV lines and temporary power supply construction. task. Carry out street lighting project and focus on the completion of street lighting of Gaochun Road and No. 7 Road. A total of 444 street lamps have been installed on the Gaolan Road street lighting project. The newly-established cable and circuit line is 27.84 kilometers. There are 11 new 10,000-volt box transformers. The project received a review from the working group of the municipal party committee and city government and was well received.

Complete all power protection tasks. This year, Gaoqing County's power supply company has undertaken a total of 32 power guarantee tasks, and has secured a total of 220 days of electricity protection. The company is fully committed to power supply security with a high degree of political awareness. It plans power protection in advance and implements the responsibility of ensuring power at all levels. It completes the 18th CPC National Congress, the first Black Bull Festival of China (Gaoqing), the Yellow River Flood Control, and the “Two Conferences”. "And other key security and reliable power supply period. Adhere to the emergency watch normal mechanism, leaders take the lead to implement 24-hour duty, so that real-time response, overall planning. The emergency plan was perfected, emergency drills were conducted, and the Yellow River flood prevention and power emergency drills were successfully held. On May 25th, the company's emergency rescue service team participated in the emergency rescue operation of the Lubao oil pipeline in Zibo City, which won the recognition and praise from the leaders of the company.

Strong technology and promote network promotion rate. On the basis of improving the mechanism and strengthening management, we will increase input and use scientific and technological means to improve the voltage qualification rate and the reliability of power supply. Carry out the transformation of distribution automation project. After the project is completed at the end of the year, it will realize the automation and intelligent management of the distribution line in the center of the county, and realize the automatic isolation of faults and the remote ring network power conversion. The installation of intelligent terminals, the use of automatic compensation devices and other technical means, the installation of 80 voltage monitoring points, to achieve high-voltage dedicated users and public distribution acquisition coverage rate of 100%, low-pressure information acquisition coverage of 40%. Implementation of state maintenance, live working, and joint maintenance, etc., this year carried out a total of 68 times live and fire. From January to November, the reliability ratio of the power supply in the urban and rural areas of the company was 99.975% and 99.977%, respectively, and the average time for households in the county was reduced by 1.1 hours from the same period.