The Role of the Latvian District Heating System in the Development of Sustainable Energy Supply

摘要: The aim of the study is to determine whether and what extent it possible use excess electricity produced by wind power plants during low demand periods for district heat production pumps. Energy system analysis on an hourly basis conducted at various capacities plants. results show that increase share renewable energy sources, decrease primary sources CO2 emissions per unit energy, i.e. electricity, using surplus in pumps combined with storage. consumer participate solution any mismatch between supply from RES. this work was a heating system, combination storage, can serve as flexible user Latvian system. This inspired made Denmark (3) purpose analyze national strategies large-scale integration RES technologies. present aims RES, (PES) sectors WPP ultimate goal role systems advancing more sustainable systems. II. METHODS Modeling large technologies intermittent character has be done sufficiently small time-step calculation. calculations allows considering demand-supply dynamics required precision arrive accurate integral values obtained one year. System Analysis Model "EnergyPLAN" (4) which developed Aalborg University chosen modeling tool. used into other technologies, storage transport countries (5-9). tool well suited characterization scenarios are 100% based several (10-14). strength model ability include analysis, consider consumption situation basis, perform optimization under conditions, obtain variety important technical, economical environmental characteristics studied included only systems, conversion facilities characterized Table 1 reference case.