基于仿真的220kV 单母线过电压分析与处理

摘要

Xiabandi hydroelectric power station is located in Southern Xinjiang Plateau,which is far from Southern Xinjiang Power Grid Power Source.When reverse power transmission occurs in Xiabandi Hydroelectric Power Plant system,220kV bus bar has high operating voltage,and machine-end operation voltage is higher due to high bus voltage.Power system Matlab /Simulink simulation software is applied for realizing modeling and simulation to the design plan of proposed system in order to better solve the problem of high voltage in the system.Simulation results can be well applied to practice. Meanwhile,the application of Matlab software has better realistic application significance in analyzing system transition process,realizing design optimization,anticipating dynamic impact on system,assisting in discovering short-circuit fault points and other aspects.Reference basis can be provided for solving subsequent similar problems through analyzing system simulation diagram,and it has certain reference value for similar power stations.%下坂地水力发电厂地处南疆高原，远离南疆电网电源点。下坂地水力发电厂系统反送电时220kV 母线运行电压高，因母线电压高导致机端运行电压偏高。为了较好地解决系统电压高的问题，应用电力系统 Mat-lab ／Simulink 仿真软件实现了对拟投入系统设计方案的建模仿真，仿真结果能够较好地应用于实践。同时应用Matlab 软件对于分析系统的过渡过程、实现设计优化、预判对系统的动态冲击、协助查找短路故障点等方面具有较好的现实应用意义。通过对系统仿真图的分析，对后续类似问题的解决提供了可供借鉴的依据，对类似电站有一定参考价值。