Steady-state Accuracy Verification Method for Multi-terminal Differential Protection of Distribution Network Based on 5G MEC
In order to improve the detection accuracy of multi-terminal differential protection of distribution network and reduce the delay,a steady-state accuracy verification method of multi-terminal differential protection of distribution network based on 5G MEC is proposed.We complete centralized management and control operations with the multi-modular network function ar-chitecture of the 5G core network,and realize local distribution in combination with the MEC platform.The scheme divides the line into multiple multi-terminal differential protection areas,and completes the multi-terminal communication of differential protection through various protocols.The scheme obtains the balance factor,eliminates the unbalanced differential current,uses the simplified current conversion method of phase compensation to obtain the differential current,and completes the verifi-cation of the steady-state accuracy of the multi-terminal differential protection of the distribution network.The test results show that the transmission delay of this method is less than 88 μs,the sensitivity of differential protection action after verifica-tion is significantly improved,and the action rate is 100％,which can improve the steady-state accuracy of multi-terminal dif-ferential protection in the distribution network.
5G MECmulti-terminal distribution networkdifferential protectionsteady-state accuracy verificationphase compensation
万方数据
维普
