Collaborative Optimization Of The Energy Supply System In The Multi-energy Complementary Park Taking Into Account Electricity-to-gas

Multi-energy complementary parks are widely used because they can effectively coordinate and dispatch multiple energy sources such as electricity,heat,cooling,and gas,and realize the cascade utilization of energy,thereby improving the park’s environmental protection benefits and operating economy.Based on this,this paper takes the multi-energy complementary park that takes into account the electricity to gas as the research object,and studies the energy supply zone planning and optimized operation scheduling of the electricity,heating,cooling,and gas cogeneration park.Aiming at the problem of energy supply zoning planning for multi-energy complementary parks,comprehensively considering multiple loads such as electricity,heat,cooling,and gas,a method for park energy supply zoning planning based on cosine similarity comparison is proposed.Established a zone planning model for energy supply in the park with the maximum inter-zone load cosine ratio as the objective function.According to the correlation matrix of the geographical location of the energy supply cell,the zone result was obtained and compared with the different zone results generated by different core cells to determine the zone plan.,And take a multi-energy complementary park as an example to analyze the calculation example,which shows that the method guarantees the balance of the internal load ratio of the energy supply district and the load ratio of different districts on the basis of comprehensively considering the electric,heating,cooling,and air loads.The difference has realized the reasonable and optimized zoning of the park and verified the applicability of the method.On the basis of the planning of the park,based on the energy conversion of electricity-to-gas technology,the characteristics of time-space translation,and the multi-energy complementarity of the park’s multiple loads of electricity,heat,cooling,and gas,and the multi-agent characteristics of energy supply zones,this paper proposes Optimal scheduling method for multi-energy complementary parks.Comprehensively considering the energy supply economy,environmental protection economy and wind power/photovoltaic output characteristics of the multi-energy complementary park,a two-tier dispatch model based on non-cooperative games is introduced.The upper layer takes the lowest daily operating cost as the objective function,and the lower layer takes the wind power/photovoltaic output characteristics optimal is the objective function,and the non-cooperative game theory is used to study the optimal scheduling of multi-agent characteristics among the zones within the park.The analysis results of the calculation examples verify the effectiveness of the model and realize the optimal scheduling of the multi-energy complementary park.