核电机组对于电网频率电压波动响应特性的仿真分析

Simulation Analysis on Response Characteristic of Power Grid Frequency Voltage Fluctuation Affected by Nuclear Power Unit

核电机组在总发电量中的占比正在逐年上升,建立适用于电力系统中长期稳定性分析的核电机组数学模型,用以分析核电机组的涉网响应特性显得很有必要。利用MATLAB-Simulink建立压水堆核电机组数学模型,并在此基础上仿真分析核电机组的固有特性,研究核电机组对于电力系统扰动的响应特性。仿真结果表明,核电机组能满足一定的负荷跟踪需要,电网频率和电压的波动对核电机组的影响很小。

Rate of nuclear power unit in total generating capacity is increasing year by year and it is very necessary to establish mathematical model of nuclear power unit in order to analyze power grid response characteristic of the nuclear power unit which is suitable for medium and long term stability analysis on power system. By using Matlab-Simulind software this paper introduces establishment of mathematical model for pressurized water reactor nuclear power unit. On the basis of this model, it proceeds simulation analysis on inherent characteristic of the nuclear power unit and studies response characteristic of pow- er system disturbance affected by nuclear power unit. The simulation result shows that the nuclear power unit is able to satisfy a certain requirement for load trace and impact of power grid frequency and voltage fluctuation on the nuclear power unit is very small.