Over 150 billion investment in distribution network reconstruction

In 2015, the State Grid Corporation of China will take the lead in building a modern distribution network in the core areas of key cities and build a world-class modern distribution network by 2020.

The 2014 government work report stated that in order to realize the new type of urbanization, “the next three years will focus on resolving the existing “three hundred million people” problem.” As an important infrastructure for improving people’s livelihood, the distribution network needs to be continuously adapted to the new type of urbanization. To meet the development requirements, a modern distribution network with reasonable structure, advanced technology, flexible and reliable, and economical efficiency will be built.

As a large state-owned enterprise, the State Grid Corporation of China is working hard to achieve this goal. It is reported that in 2014, the State Grid Corporation of China planned to invest more than 150 billion yuan in the distribution network reconstruction and complete the transformation and reconstruction of the power grids in the core areas of 30 key cities.

Last year, the power grid investment of 110KV and below accounted for nearly 47%

According to reports, in 2013, the proportion of investment in distribution network investment of the State Grid Corporation of China was significantly higher. The proportion of investment in grids of 110KV and below increased from 29.74% in 2005 to 46.93% in 2013, which promoted the grid structure of power grids at all levels. reasonable.

The data shows that in 2013, the State Grid Corporation transformed 6812 kilometers of transmission lines with 35KV and above, and converted 4.38 billion yuan into distribution networks. In addition, vigorously promote the integration of urban and rural power supply, and actively promote the upgrading and upgrading of rural power grids. In 2013, an investment of 47.82 billion yuan was completed.

It is precisely because of the above work that the level of power supply in urban and rural areas within the operating area of ​​the State Grid has increased significantly. For urban power supply, the power supply reliability rate is 99.956%, and the average annual power interruption time is 3.854 hours. For rural power supply, 5,270 new substations, 503,000 kilometers of transmission lines and 366,900 sets of transformers have been built and renovated, and a total of 20.08 million low-voltage problems have been solved. The reliability of network power supply is 99.852%, the average annual power-off time is 12.965 hours, the gap between average annual power cuts in urban and rural areas is reduced to 9.11 hours, and the entire year is 167,000 and 700,000 people without electricity solve the problem of power supply. The price reduction of electricity consumption for rural residents is about 48.7 billion yuan.

This year will fully promote the construction of distribution network standardization

The 2014 annual work conference of the State Grid proposed that this year will start with the standardization of distribution network construction to comprehensively promote the construction of distribution network management and lay a solid foundation for the complete modern distribution network.

To this end, the State Grid will use “six changes” (systematization of technical standards, modularization of design schemes, standardization of equipment selection, standardization of construction processes, rationalization of construction cost, lean maintenance of maintenance and operation), and “six unifications” (unified technical standards). , a unified design plan, a unified equipment selection, a unified construction process, a unified project cost, a unified transport inspection management) to lead, improve the technical standards system, optimize the equipment sequence, simplify the equipment type, unify the construction process, standardize the project cost, strengthen the inspection Management, comprehensively improve the distribution network power supply capacity and business management and control capabilities, shorten the fault outage time, improve the power distribution network reliability.

In addition, State Grid Corporation proposed to promote standardization construction, strictly implement relevant technical standards, comprehensively promote and apply typical designs, strengthen the promotion of related system standards, accelerate the development of distribution network engineering design software, and improve the quality of distribution network development; complete distribution network operation and maintenance Integrate and repair specialization system construction, vigorously promote uninterrupted operation, extensively apply mature electrification detection technology, improve lean level; according to local economic development, power supply reliability requirements, distribution network grids and equipment conditions, hierarchical division “ "Differentiation" promotes the construction of distribution automation, enhances the level of intelligence, and meets the development needs of the power grid; comprehensively strengthens the construction of distribution network grids, effectively solves the problems of overloading and overloading of equipment, and improves the power supply capacity.

Completely build a world-class modern distribution network in 2020

For this year's distribution network construction target, Wang Yanfang, spokesman of the State Grid Corporation of China, said that the company's power distribution network investment will exceed 150 billion yuan, and it is expected that more than 50,000 kilometers of transmission lines with 110 (66) KV and above will be put into operation. Complete the intelligent transformation of 100 substations and install 60 million smart meters. Completed the transformation and reconstruction of the power grids in the core areas of 30 key cities, and solved the problem of 5 isolated grid operations and 38 weak county power grid links with the main network.

At the same time, the State Grid Corporation of China also promised that this year will solve the problem of 260,000 households with 1.04 million people without electricity; the city's power supply reliability rate is 99.966%, and the rural network power supply reliability rate is 99.875%. The annual power cut between urban and rural households has narrowed to less than 8 hours. .

According to the planning of State Grid Corporation, in 2015, modern distribution networks will be established first in the core areas of major cities, and modern distribution networks will be basically built in major urban areas of important cities to solve the problem of power consumption in areas without electricity and basically solve the weak link between the county grid and the main network. Problems, as well as rural grid low voltage problems, adapt to 8% penetration of distributed power access. By 2020, it will build a world-class modern distribution network to meet the needs of the rapid economic and social development and the development of urbanization.