考虑能源站非线性效率系数的电热综合能源系统运行分析

Operation Analysis of Electric Heating Integrated Energy System Considering Nonlinear Efficiency Coefficient of Energy Station

为简化计算和提高效率,传统电热综合能源系统中区域能源站能源转换设备的效率系数通常设为常数。但在实际运行中,能源转换设备的效率与其实时出力往往呈非线性关系,因此采用常规优化调度方法存在精度问题。由此,根据已有研究提出的效率系数与其输出功率的二次函数关系,构建电热综合能源系统的最优经济调度模型,并采用粒子群算法进行求解。基于算例分析,考虑能源站非线性效率系数和常效率系数对电热综合能源系统运行成本、电网和热网运行时间特性以及配电网电压水平等的不同影响,为实际工程应用提供相应的理论支持。

In order to simplify calculations and improve efficiency in traditional electric heating integrated energy systems, the efficiency coefficients of energy conversion equipment in regional energy stations are usually set to be constant. However, in actual operation, the efficiency of energy conversion equipment is often nonlinearly related to its real-time output. Therefore, there is a problem of precision in the optimization of dispatch analysis using conventional methods. According to the relationship between the efficiency coefficient and the output power quadratic function proposed in the existing research, the optimal economic scheduling model of the electric heating integrated energy system is constructed in this paper. Through analysis of the study case, considering different effects of the nonlinear efficiency coefficient and the constant efficiency coefficient of the energy station on the system operating cost, the running time characteristics and the voltage level of the distribution network, it provides theoretical support for practical engineering applications.