基于多能流耦合规律的综合能源系统潮流及流分析

INTEGRATED ENERGY SYSTEM POWER AND EXERGY FLOW ANALYSIS BASED ON MULTI-ENERGY FLOW COUPLING LAW

从能量流和流两个角度分析综合能源系统的多能流耦合规律,建立系统能流稳态潮流模型和流模型,根据模型特点研究系统潮流和流分布计算方法,以算例验证计算方法的可行性并分析计算数据,验证流机理模型相比于黑箱模型在局部分析方面的优越性。以算例数据为例,分析其潮流及流分布特点,结果表明:算例系统中能源转换环节的地方损最大,为系统薄弱环节,值得着重改进;同时电、热网络也有部分管段损较大,优化局部网络时也应纳入考虑。

The paper analyzes the multi-energyflow coupling law of integrated energy system from two perspectives of energy flow and exergy flow,establishes the system flow steady-state tide model and exergy model,studies the calculation method of system tide and exergy flow distribution according to the model characteristics,and verifies the feasibility of the calculation method with calculation examples,and analyzes the calculation data to verify the superiority of the exergy flow mechanism model compared with the traditional black box model.The results show that the tidal current and the distribution characteristics of the radiation flow are analyzed with the data of the calculation example,and it is pointed out that the energy conversion link has the largest exergy loss,which is the weak link of the system,and it is worth to focus on the improvement,while the electric and thermal networks also have some pipe sections with large radiation loss,which should be taken into consideration when optimizing the local network.