Power Internet of things network technology has a “double-edged sword” effect; on one hand, let us feel fast and convenient, but on the other hand, we are wandering in the network security. At the same time of paying more attention to the quality of human life, it is also necessary to take into account the network security issues related to the power Internet of things. Therefore, this paper aims to study the full-scene network security protection system based on ubiquitous power Internet of things, which is an important topic at present. This research investigates the effectiveness of the Internet of Things in the network security protection system in general scenarios by investigating the traditional network security risk index and analyzing the excellent performance of the Internet of Things, aiming at the security risks of traditional network servers. In actual application scenarios, the Internet of Things can protect the entire network system in an all-round way anytime and anywhere. This powerful defense performance is unmatched by traditional networks. Big data intelligent monitoring system is used to monitor the actual operation of all-weather and all-scene network protection system. Experimental data show that in the ubiquitous power Internet of things environment, although there are still some risks in the operation of grid companies and other intelligent terminals, the number of security risks is significantly lower than that of the traditional Internet of things. The significance of “ubiquitous” power Internet of things is the all-scene network security protection system that works all day and all the time. Integrated servers can better protect against security risks than single servers. Experimental data shows that the full-scenario network security protection system in the Internet of Things effectively integrates the facility resources in the power system and the communication system, and it improves the company’s perception of the entire actual scene during the operation. At the same time, it also promotes the integration of corporate information and provides intelligent support for corporate decision-making.