适用于多能源长输电线系统实时仿真的建模方法

随着多能源不断接入电网,对多能源长输电系统的仿真研究得到了越来越多的关注。为了进一步提高多能源长输电线系统的仿真效率和实现系统的大规模仿真,提出一种基于长输电线路模型法的仿真接口算法。同时,针对电磁暂态迭代计算中出现的延时问题,提出一种对分割接口进行延时补偿的方法,使得系统在仿真时具有更高的仿真精度。其中,在模型接口算法中采用受控源作为分割接口的控制对象,以实际多能源多电压等级长输电线系统为算例,分别在Matlab/Simulink、实时仿真机(UREP_300)和RT-LAB仿真平台中进行验证。结果表明：设计的长输电线模型(transmission line model, TLM)接口算法与分布式接线用于长输电系统传输时的暂态和稳态结果基本一致,该接口算法适用于离线仿真与实时仿真平台,在提高仿真效率方面具有一定的优势。

Modeling method for real-time simulation of multi-energy long-distance transmission line systems

With the continuous connection of multi-energy to the power grid, simulation research on the multi-energy long-term transmission system has attracted increasing attention. To further improve simulation efficiency and realize large-scale simulation of a multi-energy long-distance transmission line system, a simulation interface algorithm is proposed based on a long-distance transmission line model method. Also, given the delay problem in the iterative calculation of electromagnetic transients, a method for delaying compensation of the segmentation interface is proposed. This gives the system higher simulation accuracy during simulation. The controlled source is used as the control object of the split interface in the model interface algorithm, and the actual multi-energy and multi-voltage long-distance transmission line system is used as an example to be verified in a Matlab/Simulink, real-time simulator (UREP_300) and RT-LAB simulation platform. The results show that the designed long-distance transmission line model (TLM) interface algorithm is basically consistent with the transient and steady-state results of distributed wiring for long-distance system transmission, and the interface algorithm is suitable for offline simulation and real-time simulation platform. This offers advantages in improving simulation efficiency.