دانلود مقاله ترجمه شده بهینه سازی سیستم چند حاملی انرژی بر اساس مدل سازی مکانیسم یکپارچه بهره برداری جدید تبدیل برق (توان) به گاز با ذخیره انرژی برق گرمایی مبتنی بر CO2

Abstract

The  rapid  development  of  power-to-gas  (P2G)  technology  promotes  the  integration  of  renewable  energy  and  converts excess renewable generation to synthetic natural gas at the appropriate time. However, with only a 45% conversion rate, P2G  recycles  wind  energy  inefficiently  because  a  significant  percentage  of  energy  is  lost  in  the  form  of  heat  via electrolysis. With the increasing demands of the multi-carrier energy system (MES), the greater recycling of surplus wind electricity via P2G can meet the growing energy demand and reduce the cost of the system. To increase the conversion efficiency  of P2G, this paper establishes an MES optimization  model based on the coordinated operation  modelling of P2G and CO₂-based electrothermal energy storage (ETES). This model considers heat recovery in the power-to-hydrogen process.  CO₂-based  ETES  is  introduced  as  a  storage  element  for  heat  recovery  in  the  electrolysis  process,  which  also participates  in  the  methanation  reaction  as  a  CO₂  supplier.  Formulations  to  explain  the  coordinated  operation  of  the CO₂-based  ETES and  P2G  are  derived as  well. The  optimization  model  is  further  linearized to a tractable  version and solved by popular optimization solvers. Case studies show that the model established in this study achieves more than a 70.5% recovery efficiency of the excess wind power.