This article presents a novel renewable microgrid-enabled metro traction power system (MMTPS), where the renewable energies and regenerative braking (RB) power of metro trains are unifiedly managed by renewable microgrids to reduce energy consumption and obtain the economic benefits for metro traction power system (MTPS). The concept and system framework of MMTPS is first established, where the metro energy router (MER) is presented as an innovative solution to efficiently integrate renewable microgrids into MTPS. Then, the four operation modes of MMTPS are defined and analyzed, including the voltage control mode, the power control mode, the RB supporting mode, and the islanded mode. Furthermore, the system average model of the proposed MMTPS is established to investigate the steady-state performances of MMTPS. In addition, the control strategies of MMTPS are developed to enable the different operation modes. Finally, the simulation and hardware-in-the-loop (HIL) experimental results are given to validate the effectiveness of the MMTPS. The proposed MMTPS as an innovative solution is able to reduce the energy consumption of MTPS and obtain economic benefits from renewable energy sources and RB energy.

中文翻译：

---

一种新型可再生微电网支持的地铁牵引电力系统——概念、框架和运营策略

本文提出了一种新型可再生微电网地铁牵引电力系统（MMTPS），其中地铁列车的可再生能源和再生制动（RB）电力由可再生微电网统一管理，以减少能源消耗并获得地铁牵引电力的经济效益。系统 (MTPS)。首先建立了 MMTPS 的概念和系统框架，其中城域能源路由器 (MER) 作为一种创新解决方案将可再生微电网有效地集成到 MTPS 中。然后，定义并分析了MMTPS的四种工作模式，包括电压控制模式、功率控制模式、RB支持模式和孤岛模式。此外，还建立了所提出的 MMTPS 的系统平均模型，以研究 MMTPS 的稳态性能。此外，开发了 MMTPS 的控制策略以实现不同的操作模式。最后，通过仿真和硬件在环 (HIL) 实验结果验证了 MMTPS 的有效性。拟议的 MMTPS 作为一种创新解决方案，能够降低 MTPS 的能源消耗，并从可再生能源和 RB 能源中获得经济效益。