面向新型配电网的智能化一二次融合环保气体环网柜关键技术与试验验证OA

To address insufficient insulation margin,electric-field distortion,and limited anti-interference capability of eco-friendly gas-insulated ring main units in new-generation distribution networks,the overall architecture of intelligent primary-secondary integrated eco-friendly gas-insulated ring main units is constructed.Electric-field equalization,coordinated built-in sensor layout,measurement-chain anti-interference optimization,and coordinated control between the three-position switch and circuit breaker are adopted to integrate insulation design,measurement,and fault interlocking.Type tests and real-type single-phase grounding tests show that the prototype achieves Class 0.5 metering accuracy,a basic phase-voltage error of 0%,incoming and outgoing phase-current errors of-0.15%to+0.30%and-0.15%to+0.60%,respectively,a grounding fault identification accuracy of 100%,and an interlocking response time of less than 100 ms,meeting engineering application requirements.