面向电网规划设计的电磁暂态仿真研究与应用

  目的]  为了在特高压与超高压电网规划设计中对相关电气设备电磁暂态特性进行评判，需要进行电磁暂态仿真专题研究。  方法]  提出影响此类仿真结果的关键因素主要有电力系统潮流与短路资料、输电线路物理结构与电气参数资料、变电站主要电气设备详细电气参数资料的完整性与准确性以及仿真工具的适用性。  结果]  基于权威的电磁暂态仿真软件，提出了进行潜供电流与恢复电压、工频过电压、操作过电压以及变压器中性点加装小电抗等电磁暂态特性仿真时应遵循的主要条件与要求，并阐明了相应的仿真结果与应用。  结论]  研究成果已用于电网规划与输变电工程设计，可满足电力系统电磁暂态仿真要求。

Research and Application on Electromagnetic Transient Simulation for Power Grid Planning and Design

  Introduction]  During the planning and design of extra-high and ultra-high voltage power grid, it is necessary to specialized research on electromagnetic transient simulation in order to evaluate the electro-magnetic transient characteristics of the related electrical equipment.  Method]  This paper aims to put forward the key factors affecting the results of simulation. They mainly include the applicability of the simulation software and the completeness and accuracy of power flow and short circuit data of the power system, the physical structure and the electrical parameter information of the transmission lines, the main electrical equipment details of the substation.  Result]  Based on the authority of the electromagnetic transient simulation software, we proposed the main conditions and requirements should be followed and illustrated the corresponding simulation results and application during the simulation of the electromagnetic transient characteristics such as the secondary arc current and recovery voltage, the power frequency over-voltage, operation over-voltage, and the small reactance installed the neutral point of the transformer, and so on.  Conclusion]  The conclusions have been used in the planning of power grid and the design of power transmission and transformation project. And it can meet the electromagnetic transient simulation requirements for the power system.