The Application Research Of Distributed Energy Resources System For An Engineering Project In Beijing

Improve energy efficiency, development of low-carbon economy is the world’s inevitable choice to achieve sustainable development. The coordinated development of Economy, energy and environment is an important prerequisite for China’s modernization and sustainable development goals. Distributed Energy Systems is one of the important new technologies to improve energy efficiency. The system can simultaneously generate electricity and heat, the heat can be further transformed by heat absorption unit for cold, achieve high quality electricity and low quality thermal or cold energy requirements effectively unified.This paper discusses the typical flow of distributed energy system and unit configurations, gas turbines and internal combustion engine combined heat absorption unit is currently the main application form and direction of development of natural gas distributed energy projects. Then summarizes the performance of various types of distributed energy systems, formula, comprehensive evaluation of the relative saving rate, variable conditions characteristic, exergy efficiency and other aspects of distributed energy systems and energy efficiency thermodynamic economy.Taking a project as an example, first conducted a crew equipment selection of hot,cold and electrical load forecasting;Select by gas engine group plus heat absorption equipment system configuration。Turn from economics of distributed energy projects project profitability analysis, sensitivity analysis, risk analysis,discusses the potential impact of electricity prices, gas prices and other risk factors for the project.The various conditions of the system energy efficiency, economic analysis. Thus explained the rational allocation of distributed energy systems are effective energy conservation measures, users can bring economic benefits, but also can reduce winter gas load ratio, achieved peak gas-electric complementary, optimizing energy structure.Distributed energy systems to improve energy efficiency will reduce fuel consumption, reduce absolute emissions of pollutants.At the same time, because the main use of cleaner fuels such as natural gas, and renewable energy easy to combine the technology itself and the system is determined by the energy emissions conventional energy technologies are relatively low, which reduces the negative impact on the environment.The rapid development of natural gas, smart grid planning and emergence of regional specialization energy companies, for distributed energy project provides a good opportunity. In accordance with national conditions, take measures to promote all aspects of the development of various aspects of distributed energy projects, make energy conservation and economic benefits are fully reflected.