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Coordinated dispatch of multi-energy system with district heating network: Modeling and solution strategy

机译:区域供热网络的多能源系统协调调度:建模和解决方案策略

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摘要

This paper proposes a dispatch strategy for the multi-energy system (MES) that utilizes the district heating network (DHN) to realize the heat power interaction of multi cogeneration system, so as to improve the operational flexibility. A novel model for the DHN that couples multi heat sources and is under quantity regulation is proposed, based on which an optimal coordinated dispatch model (OCDM) for the MES is presented comprehensively. The DHN model comprises dispatch constraints (DCs) and linear system of temperature correction equations (TCEs). The DCs form part of the OCDM constraints, where the mass flow temperatures are treated as constants and the mass flow rates and heat power are decision variables. The TCEs are employed to update the mass flow temperatures in DCs. Subsequently, an iterative solving strategy for the OCDM is proposed. The convergence of the solving strategy is analyzed and an effective method is introduced to ensure the convergence. A modified system based on an actual MES in Changchun, China is researched in the case study. Three cases are given to verify the effectiveness of the dispatch strategy and the solution method as well as study the influence of wind power penetration and heating level to the results. (C) 2018 Elsevier Ltd. All rights reserved.
机译:提出了一种利用区域供热网(DHN)实现多热电联产系统热电相互作用的多能源系统(MES)调度策略,以提高运行灵活性。提出了一种多热源耦合并受数量调节的DHN模型,在此基础上,综合提出了MES的最优协调调度模型(OCDM)。 DHN模型包括调度约束(DC)和温度校正方程(TCE)的线性系统。 DC构成OCDM约束的一部分,其中质量流量温度被视为常量,质量流量和热功率是决策变量。使用TCE更新DC中的质量流量温度。随后,提出了OCDM的迭代求解策略。分析了求解策略的收敛性,并介绍了一种确保收敛的有效方法。在案例研究中,研究了基于中国长春市实际MES的改进系统。通过三个案例验证了调度策略和求解方法的有效性,并研究了风电渗透和供热水平对结果的影响。 (C)2018 Elsevier Ltd.保留所有权利。

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