实现自适应重合闸的方法已经很多,但是将输电线贝瑞隆模型应用其中的,国内外还没有见到,因此提出了基于贝瑞隆模型的特高压长线路单相自适应重合闸的新原理。具体方法是在单相重合前,保护使用贝瑞隆模型计算线路故障点两侧的电流,进而求出故障点处的潜供电流,然后根据其有无,来区分线路是永久性故障还是瞬时性故障,从而达到避免重合于永久性故障的目的。通过仿真表明,该原理区分度大,耐受过渡电阻能力强,并且对测距精度不敏感。因为线路越长,电压越高,输电线故障后潜供电流越大,所以该原理在特高压长线路上具有较强的实用价值。 There are a lot of ways to realize adaptive reclosing. However, the application of the Bereaire model of transmission line has not been seen at home and abroad. Therefore, a new principle of single-phase adaptive reclosing for UHV long lines based on Berry Long model is proposed. The specific method is to protect the current on both sides of the line fault point by using Berillon model before the single-phase coincidence, so as to find out the sub-current at the fault point, and then distinguish whether the line is permanent fault or transient according to its existence or absence Fault, so as to avoid coincident with the purpose of a permanent fault. The simulation shows that the principle of discrimination is large, strong ability to withstand the transition resistance, and is not sensitive to ranging accuracy. Because the longer the line, the higher the voltage, the greater the potential of the sub-supply current after the transmission line fault, so this principle has a strong practical value in the UHV long line.