Single-Phase High-Impedance Grounding Protection Method for Power Distribution Network with Active Power
For most of conventional single-phase high-impedance grounding protection of power distribution network,adaptability assay will not be performed.Therefore,this paper proposes the design and analysis of single-phase high-impedance grounding protection method for power distribution network with active power.Firstly,the characteristic quantity conformation and setting principle setup of high-impedance grounding protection are carried out,and the adaptability assay of high-impedance grounding protection of power distribution network is carried out in the context of active power to ensure the stability of protection processing results.The grounding protection processing is hereby completed by polarity checking.The test results show that,for the selected four feeders,the final high-impedance resistance capacity of single-phase high-resistance grounding protection of power distribution network can reach over 255.5 Ω under three environments:120 Ω,155 Ω and 180 Ω,respectively,indicating that the designed grounding protection mechanism is more stable and efficient,with better targeted effect and significantly improved protection effect.
active powerpower distribution networksingle-phase controlhigh-resistance groundinggrounding protectionpower grid operation control