Operation Optimization Of Combined Power Generation System With Carbon Capture Under Ladder-Type Carbon Trading

Since the signing of the Paris Agreement,China has begun to actively explore a new model for the development of low-carbon economy.The proposal of the "30·60"dual-carbon goal represents that China has put forward clear requirements for future carbon emission reduction work.As the largest carbon emitter,the low-carbon transformation of the electric power industry is very important to achieve the dual-carbon strategic goal.Vigorously developing renewable energy has become an effective measure to deal with the problem of carbon emission.To this end,China has officially launched the national carbon market,and provincial governments have also issued new energy equipped with energy storage policies to accelerate the energy transformation and development of the electric power industry.However,due to the problems of fixed carbon price and low carbon price,the current traditional carbon trading mechanism is difficult to fully stimulate the emission reduction initiative of power generation enterprises.At the same time,due to the randomness and intermittence of wind power and photovoltaic energy(PV),it is difficult to absorb renewable energy in a high proportion.For this reason,this study improves the current carbon trading mechanism through the reward and punishment mechanism,and introduces a ladder-type carbon price to further stimulate the carbon emission reduction power of enterprises.The variety of carbon emission reduction policies and technologies such as improved ladder-type carbon trading,energy storage and carbon capture technology are applied to the hybrid power generation system,and a combined wind-PV-thermal-energy storage power generation operation optimization model with carbon capture under ladder-type carbon trading is constructed,which not only analyzes the effectiveness and collaborative optimization of several carbon emission reduction policies and technologies in power system operation,provides feasible suggestions for the promotion and improvement of these policies and technologies,but also explores a power system operation strategy taking into account economy and stability.Firstly,the paper summarizes several related theories such as combined generation dispatching theory involved in the study.Secondly,a ladder-type carbon trading model considering reward and punishment mechanism is constructed by improving the traditional mechanism,and the carbon price is predicted by the grey-moving average combination prediction method.Then,the ladder-type carbon trading and energy storage involved in the current policy,and the carbon capture technology with strong carbon emission reduction potential are applied into the combined power generation system,and the combined wind-PV-thermal-energy storage power generation operation optimization model with carbon capture under ladder-type carbon trading is built,which aims to study the synergistic emission reduction effect of various carbon emission reduction policies and technologies in the operation of power generation system,and explore a relatively optimal power generation system operation strategy that takes into account the requirements of economy and stability.Finally,the wind power and photovoltaic power generation are predicted by Monte-Carlo random sampling method,the ideal point method is used to solve model,and the case analysis is carried out by using the scenario analysis method.The results show that the ladder-type carbon trading model has advantages over traditional carbon trading in promoting renewable energy consumption and carbon emission reduction,and the improvement is effective.The common introduction of ladder-type carbon trading and energy storage can not only achieve functional complementarity in ensuring the stability of power supply and improving the consumption of renewable energy,but also bring additional positive collaborative optimization in promoting consumption and emission reduction.In addition,the introduction of carbon capture technology on the basis of synergy can significantly reduce the carbon emissions of the system without affecting the emission reduction effect of the above policies,and offset the capture operating costs by virtue of the carbon trading income.It also verifies the effectiveness and scientific of the operation strategy proposed.