District heating networks have an ability to store heat to improve the flexibility of power systems, but it lacks a compatible method to analyze thermal and power system together. Based on the thermal-electric analogy method and inspired by the electromagnetic transient analysis approaches, this paper develops a thermal-electrical analogy transient model for district heating pipelines (DHPs), which offers the matrix formulas to describe the variations of fluid temperature and stored heat with time in the pipelines, instead of the traditional partial differential equations. For a heating pipe with the length 20 km, applying the thermal-electrical analogy transient model gives the variations of the outlet temperatures and the stored heat of the pipe under step, periodic and sinusoidal inlet temperatures, where the outlet temperatures keep unchanged before 300 min due to time delay. From 300 to 380 min, the outlet temperature rises to approach the inlet temperatures, i.e. the thermal non-regular regime, but 1 °C lower due to heat loss. After 380 min, they vary in the same trend as the inlet temperatures, i.e. the thermal regular regime, but have 380 min delay. Besides, the heat stored in the pipe and its variation frequency depend on the amplitude and phase differences of inlet and outlet temperatures.

区域供热网络具有存储热量的能力，可以提高电力系统的灵活性，但缺乏将热力和电力系统一起分析的兼容方法。基于热电模拟方法，并受电磁瞬态分析方法的启发，建立了区域供热管道的热电模拟瞬态模型，该模型提供了描述流体温度和储热变化的矩阵公式。随着时间的流逝，而不是传统的偏微分方程。对于长度为20 km的加热管，应用热电类比瞬变模型可以得出出口温度和在阶跃，周期性和正弦入口温度下管道的存储热量的变化，由于时间延迟，出口温度在300分钟之前保持不变。从300到380分钟，出口温度升高到接近入口温度，即热非常规状态，但由于热损失而降低1°C。380分钟后，它们的变化趋势与入口温度相同，即热规律，但有380分钟的延迟。此外，管道中存储的热量及其变化频率取决于入口和出口温度的幅度和相位差。