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Building a new-type power system to Promote Carbon Peaking and Carbon Neutrality in the power Industry in China

Chinese Journal of Urban and Environmental Studies 2022年第2期10卷 29-40页

作者： LIU Changyi TAN Xin LIU Yifang Economic & Technology Research Institute Global Energy Interconnection Development and Cooperation Organization

power industry is the largest carbon emission sector in China.Therefore,this industry will play an important role in achieving the carbon peaking and carbon neutrality goals( "dual carbon " goals)for the whole society.For this purpose,it is critical to balance four relationships,i.***.relationship between carbon mitigation and energy security,carbon peaking in the short term and carbon neutrality in the long term,the coordinated carbon mitigation in power industry and other industries,and technical feasibility and economic efficiency.This paper proposes the China’s Energy Interconnection scenario to promote carbon peaking and carbon neutrality of the society,which can be divided into three stages,i.***.peaking carbon emissions before 2030,rapid emission reduction during 2030-2050,and comprehensive carbon neutrality before 2060.It is expected that the power system will achieve zero emissions before other industries and contribute negative emissions afterwards,providing emission space for carbon neutrality in other industries across the society.Looking into the future,China’s electricity demand will continue to grow.Clean energy will become the main power source,the use of coal-fired power will be gradually reduced,and gas-fired power will undertake the function of peak-load regulation.Faster progress will be made in forming an overall grid pattern with ultra-high voltage(UHV) grid as the backbone and featuring "west-to-east and north-to-south power transmission,a balanced energy mix,and transnational power interconnection." Finally,this paper discusses a new-type of power system characterized by a high proportion of electricity generated from clean energy,high ratio of electric and electronic equipment,and a high proportion of power transmission and reception,together with summer and winter high load periods,and points out the challenges faced by the new-type power system with a high proportion of renewable energy sources in terms of flexibility,safety,and economic efficiency,and proposes corresponding policy recommen

关键词： new-type power system carbon peaking carbon neutrality China’s Energy Interconnection UHV power grid

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A bi-level optimal scheduling model for new-type power systems integrating large-scale renewable energy

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Clean Energy 2022年第6期6卷 931-943页

作者： Huiru Zhao Chao Zhang Yihang Zhao School of Economics and Management North China Electric Power UniversityBeijing 102206China

The construction of a new type of power system is a key way to achieve the goal of‘carbon peaking and carbon neutrality’.In the process of developing renewable energy,large-scale wind and photovoltaic power systems replace conventional units,which will have an impact on the stability of the power grid.To eliminate these concerns,this paper proposes a bi-level optimal scheduling model for new-type power systems.The upper level aims to minimize fluctuation of net load,with the consideration of demand response,to smooth the load curve.The lower level takes the minimum operating cost of the new-type power system as the objective function and the most economical scheduling strategy is established.To deal with the uncertainty of renewable energy integrated within the system,the lower model is transformed into a two-stage robust optimization model and solved by applying a column-and-constraint generation method.Finally,a regional power system is selected to conduct a case study comprising 760 MW thermal power,50 MW·h energy storage,200 MW wind turbine and 150 MW photovoltaic power.The results show that the constructed two-stage robust optimization model is conducive to establishing the most economical scheduling scheme of the system with an uncertain budget and the minimum operation cost is$45,9031.In addition,demand response and energy storage can reduce peak-to-valley differences in the power system.

关键词： wind power photovoltaic power demand response new-type power system bi-level optimization robust optimization

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