可再生能源2018，Vol.36Issue(3)：380-384,5.
大型光伏电站电压故障鲁棒在线诊断模型
Voltage fault robust online diagnosis model for large-scale PV power plant
摘要
Abstract
When a large-scale PV power station is connected to a node of regional power grid, there will be complex interaction between the power grid and the PV power station due to the uncertainties of the power grid and the PV power station operation, thus causing difficulties to the voltage fault diagnosis. For solving this problem, an on-line grid-connected point voltage fault diagnosis model based on the comparison of equivalent impedance modes on both sides of the grid-connected point of PV power station was presented in this paper. Considering the uncertainties of equivalent impedance module measurement on PV power station side and grid side, an on-line robust M-estimation discrimination model for voltage fault of grid-connected point was established based on impedance model; the robust M-estimation model of impedance difference between grid side and station side was established based on the robust standardization of impedance module measurement scale; according to the real-time measured values of impedance modules on both sides, the optimal impedance modulus difference criterion at the measuring moment of impedance module was given for voltage fault diagnosis. The simulation results of the 10-machine's 39-node simulation model established in this paper demonstrated the validity of the on-line robust diagnosis model for grid-connected point voltage fault based on impedance model.关键词
电压故障诊断/鲁棒在线诊断/在线判别/光伏电站并网点Key words
grid-connected point/on-line discrimination/PV power station/on-line robust diagnosis/voltage fault diagnosis分类
能源科技引用本文复制引用
滕云,左浩,李春来,回茜..大型光伏电站电压故障鲁棒在线诊断模型[J].可再生能源,2018,36(3):380-384,5.基金项目
青海省光伏发电并网技术重点实验室项目(2014-Z-Y34A) （2014-Z-Y34A）
国家重点研发计划项目(2017YBFB0902100). （2017YBFB0902100）
