Abstract: With the development of new power systems,new businesses such as low-voltage side measurement and control of the distribution network and distributed new energy rapid power group control are constantly emerging.The traditional acquisition sensing layer communication network needs to carry control services,which puts forward higher requirements for the bandwidth,real-time,reliability and security of the sensing layer communication.The sensing layer network technology and security schemes for the new power system were analyzed.In substations,distribution rooms,and other sites where power services are concentrated,a sensing layer network should be built as a whole to achieve local broadband wired and wireless signal coverage,unified management,and secure access,avoiding wireless resource preemption and redundant construction of wired networks.Relying on the overall architecture of the Internet of Things,it has enhanced the control ability of local networks to carry distributed new energy from new power systems in terms of coverage,performance,and security,improved the depth and breadth of the sensing layer network,and reduced the cost of grid sensing.