The "2012 China Green ICT Industry Technology Development Forum" was held on March 20, 2012 at the New Century JAL Hotel in Beijing. Cui Wenjia, senior engineer of the Planning and Statistics Information Department of the China Electricity Council, introduced the power development situation and the focus of smart grid development. The following is a transcript.

Cui Wenjia: Good afternoon, delegates! I am from China Electricity Council. In recent years, China Electricity Council has carried out some research work on some topics related to smart grid. As an industry association, we may pay more attention to the whole smart grid or the intelligent power system in a broader sense, some strategies for the development of our country and some policy support from the government, so today I will take the development and policy of smart grid as the topic, and exchange some of our preliminary ideas and conclusions with you.

The main content of the introduction has the following four aspects, the first is a necessity of smart grid construction. That is why our country has developed to this stage to build an intelligent power grid. The second is the development strategy of the smart grid. The third content is the development plan of the smart grid in the 12th Five-Year Plan. Fourth, we want to make some policy suggestions to the government.

The necessity of smart grid construction, China's power development is facing new situations and requirements, the second is the power planning layout.

The new situation and new requirements facing the development of electric power, first of all, the continuous growth of power demand, so the task of ensuring power supply is even more arduous. By the end of 2011, China has built an installed power generation capacity of 1.06 billion kilowatts and 480000 kilometers of lines of 220 kV and above. Electric power development has supported the rapid development of society. Looking forward to the rapid development of my country's industrialization and urbanization in the future, the area of new housing and the number of cars will continue to grow, heavy industry will account for a relatively large proportion, and the level of electrification will be further improved, which will continue to drive the sustained and rapid growth of power demand.

Therefore, in order to meet the rapid growth of electricity demand, we must require the development of moderate power ahead. To implement the two commitments of the Chinese government, it is required to develop green energy to improve the energy structure, to achieve the commitment of about 15% of non-fossil energy consumption in 2020 and to reduce unit carbon dioxide emissions by 40%-45% compared with 2005, and to vigorously develop hydropower, wind power and solar green energy.

The third aspect is that power security is related to the national economy and people's livelihood. Economic and social development requires reliable power supply. With the increasing level of electrification, the economic and social dependence on power is becoming stronger and stronger, and the requirements for safe and reliable power supply are getting higher and higher. China's energy transportation guarantee capacity is insufficient, the primary energy emergency reserve system is not perfect, and the development of power grid is still relatively lagging behind, The task of ensuring power security is very arduous.

The fourth aspect is the contradiction between power development and resources and ecological environment. With the continuous development of economy and society and the continuous improvement of people's living standards, the land resources are tight, and the comrades engaged in the project must have realized that the construction land of this power grid project is very difficult, the requirements of environmental protection are constantly improving, the power industry reduces pollutants, and the pressure of controlling greenhouse gases is increasing, Power enterprises are required to apply various advanced technologies to improve efficiency and protect the environment, take the road of green and harmonious development.

The fifth situation is that the needs of power users are more diversified, which requires the power system to continuously improve the level of intelligence, because with the improvement of living standards, power users have put forward higher requirements for the openness and interactivity of power supply while improving the reliability of power supply, power quality and power service level. The popularization and application of electric vehicle energy storage devices and distributed generation, it is also required that the power grid can be compatible with all kinds of power supply and user access and exit.

Therefore, the above five new situations and new requirements facing the development of our power industry require us to improve the level of intelligence. Let's talk about the necessity of building a smart grid from the perspective of power planning and layout.

The development policy of my country's electric power during the Twelfth Five-Year Plan is to give priority to the development of hydropower, optimize the development of coal power, develop nuclear power safely and efficiently, actively promote new energy power generation, moderately develop natural gas centralized power generation, develop distributed power generation according to local conditions, accelerate the construction of a strong smart grid, and drive The development of the equipment industry promotes green and harmonious development. This is a policy of our power development in the 12th Five-Year Plan.

As for the adjustment of power supply structure, everyone knows that China's installed power generation capacity is 0.966 billion kilowatts in 10 years and the growth rate in the 11th Five-Year Plan is 13.3 percent. Then it is estimated that the installed power will reach 1.463 billion kilowatts in 2015, the annual growth rate in the 12th Five-Year Plan is 8.6 percent, the installed power will reach 1.935 billion kilowatts in 2020, the annual growth rate in 135 is about 5.8 percent, and the proportion of coal power is also decreasing year by year, from 70.4 in 10 years to 63.4 in 15 years, it will drop to about 60.5 in 2020. What we are more concerned about is the proportion of non-fossil energy. It is planned that by 2015, the total installed capacity of fossil energy power generation will be 0.495 billion, with the power generation capacity of 1.59 trillion kilowatts, accounting for 12.4 percent of primary energy consumption, contributing more than 100 percent to the 11.4 percent of non-fossil energy in the country, in 2020, the total installed capacity of non-fossil energy power generation will reach 0.715 billion kilowatts, and the power generation capacity will be about 0.23 billion kilowatts, accounting for 14.5 percent of primary energy consumption. The contribution rate for the national non-fossil energy to reach 15 percent is 96.7 percent. This is the adjustment of our power supply structure.

This picture is a power flow diagram of my country in the future. It can be seen that due to the distribution of resources and loads, my country must maintain the power flow pattern of power transmission from west to east and power transmission from north to south. It includes the development of large-scale hydropower in Kazakhstan, Russia and southwest China, the development of tens of millions of wind power bases in the three north, and the development and transmission of large-scale coal power bases in North China and Northwest China, preliminary analysis of China's cross-regional long-distance transmission in 2015 more than 0.2 billion kilowatts, 2020 more than 0.4 billion kilowatts, this is our future power flow.

Through these new situations and requirements faced by the above-mentioned power development, the adjustment of the power supply structure and the future power flow, in order to support the large-scale grid-connected power generation of new energy and distributed power sources, the large-scale deployment and corresponding implementation of the power grid A larger range of cross-regional, long-distance erection of safe and stable, economical and efficient operation, the development of the power grid to the operation and control of the power grid, power grid maintenance and management of power transactions and power grid marketing information infrastructure put forward new requirements, the level of intelligent power grid put forward higher requirements.

This part is about the necessity of building a smart grid in China.

The second part would like to introduce the development strategy of smart grid.

It is divided into the following four aspects, the first is the core value of the smart grid, the second is the development goal, the third is the technical route, and the fourth is the benefit analysis.

The core value of smart grid development in China is mainly reflected in the following five aspects.

Respectively, it supports the large-scale access of new energy sources such as wind power and solar energy, allows the access of various types of distributed power supplies and energy storage equipment, realizes the active participation of users, meets the differentiated needs of users, optimizes the application of power grid assets, and makes the operation more efficient., With adaptive and self-transportation capabilities, this is the core value of my country's smart grid.

The development goals are the following five development goals.

The first goal is to provide effective adjustment and control means, realize the optimized and coordinated operation of new energy and traditional energy, implement the acceptance and withdrawal of new energy, and support the operation of large-scale new energy and distributed energy. The second goal is to comprehensively improve the adaptive capacity of the power grid and improve the transmission capacity of the power grid. The third goal is to optimize the structure of the power grid and carry out intelligent operation and management in the whole range.

The fourth goal is to provide a flexible and efficient interactive trading platform to support multiple modes of demand-side response and power trading to meet the diverse power needs of users. The fifth development goal is to comprehensively optimize the construction of power grid assets, operation and management efficiency, and greatly improve the utilization rate of assets. This is a goal of China's smart grid development.

Technical route, scientific development of smart grid, strengthening the construction of communication network, technical standards and framework are the institutional guarantee for the construction of smart grid, continuous innovation of equipment and material technology, active research on energy storage technology to ensure the access of clean energy, construction of advanced, safe and reliable intelligent dispatching system, improvement of intelligent equipment technology level, construction of intelligent substation, Strengthen the structure of distribution network and automation and information construction, strengthen the development of supply and demand, and strengthen interactive development, smart electricity, objective and fair performance evaluation, to ensure the healthy development of smart grid

The construction benefits of smart grid are mainly reflected in three major aspects, namely, energy saving and environmental protection benefits, social benefits and economic benefits. The benefits of energy saving and environmental protection are mainly reflected in the large-scale utilization and development of renewable clean energy, which to a certain extent replaces the consumption of traditional fossil energy, promotes the utilization of low-energy units, reduces the coal consumption per unit of power supply, improves the efficiency of use, reduces energy waste, and reduces Greenhouse gas emissions. The social benefits are mainly reflected in the comprehensive upgrading of technology, the joint development of multiple industries, and the provision of high-quality convenience and auxiliary services to end users. The economic benefits are mainly manifested in the realization of the adaptive and self-healing functions of the power grid, which reduces unnecessary power outage losses, the realization of demand-side correspondence and interactive users, reduces the poor distribution of the system, and reduces the cost of electricity consumption.

The industrial control application of distributed power generation system microgrid and energy storage device realizes the power supply in the nearby area, the operation optimization management of power grid assets, and reduces the operating cost of the power grid.

This paper introduces three aspects of the development plan of the 12th Five-year Power Grid, which are the development ideas, basic principles and key points of development of the smart grid.

The development idea is that the development of smart grid in China only grasps the current energy, information technology reform and economic structure adjustment, takes independent innovation as the driving force, promotes the development of new energy and renewable energy, takes the service demand of social users as the guidance, meets the sustainable development of economy and society as the goal, and takes advanced information communication and control technology as the means, The framework is safe, reliable, economical and efficient, clean, environmental protection, transparent and open, compatible with interactive modern grid. Highlight the key points, strengthen coordination, promote the research and development and industrialization of related technologies, accelerate the formulation and promotion of independent intellectual property standards, and seize the commanding heights and development opportunities of smart grid technology. This is a development idea of our 12th Five-Year Plan.

The basic principles of development, first, abide by the rules of smart grid development and track the international development trend. There are some laws in the development of power system, and the development of smart grid must also follow the laws. On the basis of meeting the safe and economic operation of the power grid, build a smart grid system with strong clean energy acceptance capacity.

The second is to adhere to the principle of adapting to national conditions and local conditions. China's development of smart grid can not copy the development model of developed countries, should be closely combined with China's economic and social development stage, the inherent requirements of sustainable energy development, the structural characteristics of power system and the actual needs of power users, take the development path of compound China's national conditions. Third, we must adhere to the principle of independent innovation. The development of smart grid is of great significance and the market prospect is broad. Countries have joined the investment in research and actively promoted the construction of demonstration projects to speed up the industrialization process and vigorously develop the construction of standard system. In order to occupy the commanding heights of global technology and market, China must increase the intensity of independent innovation and develop key technologies and equipment with independent intellectual property rights, in order to take the lead in the fierce global competition. Fourth, adhere to the principle of combining leapfrog development with steady and coordinated progress. The development of smart grid technology in all countries in the world is basically synchronized. From the perspective of national strategy, actively support the technical research of smart grid, realize the leap-forward development of my country's power and related industries, and occupy the commanding heights of development in related fields. However, smart grid is a complex system engineering. It is the intersection of multiple industries, multiple disciplines, and multiple fields, involving policies, funds, technology, talents, management and other aspects. The national strategic design should be strengthened, government-led, unified planning and steady progress to ensure the sustainable development of smart grid.

Fifth, adhere to the principle of technical rationality and economic practicality. Hard science to promote the construction of smart grid, out of a reasonable technology, moderate cost to effectively meet the demand, compound China's actual smart grid construction road, through the development of smart grid, the development of new energy and user demand timing response to the operation and management of the power system, in improving the safety of power supply at the same time, continue to reduce costs. These are the five principles that we adhere.

Then the focus of development, the first is the access technology of large-scale new energy. At present, my country has initially planned Mengxi, Jiuquan, Jiangsu, etc. It is necessary to attach great importance to the randomness and uncontrollability of new energy power generation, and accelerate the research and application of smart grid The power prediction, access and control of large-scale new energy power generation, optimized operation and dispatch, large-scale low-cost energy storage and other related technologies ensure the healthy development of new energy.

The second focus is on the technology of two-way user interaction with the grid and smart appliances.

China's electricity price level is gradually rising, the electricity consumption of urban and rural residents of industrial and commercial enterprises continues to increase, with the resident time-sharing electricity price, combined with the level of electricity price, strengthen their own electricity management, to achieve two-way interaction demand is growing. At the same time, smart home appliances smart home technology breakthrough has broad prospects.

The third intelligent distributed power generation and microgrid technology. China's wind power development has changed from centralized development to centralized and decentralized combination, under the guidance of policy and value, natural gas heat and power cold joint gradually warming up, mainly including microgrid simulation technology, control protection technology, operation optimization and energy protection technology and energy storage technology. The fourth is some cutting-edge technologies of smart grid, increasing the investment of funds and personnel, and advanced research on cutting-edge technologies that have a revolutionary effect on the construction and operation of power systems, such as fuel cell technology and so on.

The fourth major part is the proposal to the government. The first is to upgrade the development of smart grid to a national strategy and incorporate it into the national economic and social development plan and energy development strategy work system. The national comprehensive department takes the lead, and the relevant industries and industries participate in the national competent departments to jointly study and formulate the corresponding strategic goal development ideas and plans, and at the same time formulate supporting measures, establish a consolidation and adjustment mechanism, and promote the implementation of strategies and plans.

Second, implement supportive fiscal taxation policies, suggesting central policies and local policies at all levels. Third, the relevant suggestions are to straighten out the electricity price mechanism, implement a scientific and effective electricity price policy, suggest that government departments should theory the electricity price pricing mechanism, improve the pricing structure, carry out pilot projects in stages, regions and differences, and implement a flexible electricity price policy. when the conditions are ripe, it will be gradually promoted, which includes four electricity prices, namely, time-of-use electricity price, green electricity price and interruptable load electricity price.

The government authorizes power companies to issue electricity prices in real time according to the power supply and demand situation and the proportion of clean energy in the power supply, and adjust the demand of power users through price leverage. The government authorizes power enterprises to implement more kinds of time-sharing electricity price supplier selection, guide users to use electricity scientifically. With the rapid development of renewable energy such as small hydropower, solar energy, hydropower, ocean energy and geothermal energy.

The mid-range load price can be used to reduce the investment in the power grid and improve the power supply capacity while increasing the power generation capacity.

The fourth policy recommendation is to formulate relevant incentive policies to encourage the research of distributed power access technology. At present, the research on distributed power system itself has attracted enough attention, but the technical research on access to the power grid is very weak. It is suggested that the government should formulate relevant fiscal and tax incentive policies to encourage the research of distributed power access technology while promoting the unified planning, unified examination and approval and coordinated development of distributed power supply, Promote the healthy and orderly development of distributed power supply.

The fifth proposal is to speed up the construction of a standardized system to meet the development needs of smart grids.