摘要
为了研究负荷模型对交直流系统动态稳定的影响,利用电力系统仿真软件BPA对WSCC36节点输电系统进行了动态仿真,比较了不同的直流控制方式下目前电网分析中经常使用的几种负荷模型对暂态稳定的影响。仿真结果表明:负荷特性对交直流混合输电系统的动态稳定有明显的影响,受端使用考虑配网支路的综合模型最容易造成功角失稳和电压失稳,恒阻抗静态模型最有利于功角稳定和电压稳定。由于不同模型的仿真结果差别较大,并且不存在对所有故障都保守的负荷模型,因此采用最反映实际情况的负荷模型才能有效保证仿真结果的可信度。
In order to study the influence of load model to dynamic stability in AC-DC hybrid transmission system, the power system simulation software BPA is used to simulate the WSCC-36 node transmission system. Considering different control style of HVDC, the simulation is conducted with different load model. The simulation results show that load characteristics have a significant impact on the dynamic stability of AC-DC transmission system. SLM model is the most liable to fall on instability , and the constant impedance static model is beneficial to the power angle stability and voltage stability. So in the simulation to learn about the dynamic characteristics, we should use the load model which can reflect the realistic condition at most.
出处
《陕西电力》
2009年第7期32-36,共5页
Shanxi Electric Power
关键词
交直流系统
动态
仿真
负荷模型
AC-DC hybrid transmission system
dynamic
simulation
load model
