一种供热管网阻抗在线辨识新方法

Novel online impedance identification approach for heat supply networks

为提高供热管网运行监测水平,特别是水力模型校核精度,提出了一种利用管网运行条件下观测数据的阻抗辨识方法——基于广义逆矩阵理论辨识供热管网阻抗。利用线性化迭代方法求解辨识方程组的广义逆解,并以该解中的阻抗值作为辨识结果。介绍了该辨识方法在一个算例供热管网的应用,分析了观测数据误差和观测点数量对阻抗辨识结果的影响。与已有阻抗辨识方法相比,该方法具有较高的辨识准确度和计算效率。

To increase monitoring level of heat supply networks, especially accuracy of hydraulic models, proposes an impedance identification method based on generalized inverse matrix theory using observation data under realistic operation conditions. Solves the generalized inverse solution of the identification equations by a linearization iteration methodology, and confirms the impedance values in the generalized inverse solution as the identification results. Presents the application of the identification method to a heat supply network case. Analyses the influences of the observation data error and the number of observation points on the identification results. This method has higher accuracy and calculation efficiency compared with existing impedance identification method.