The protection cooperation of distribution network based on protection intelligent center and the validation of its reliability

With the development of communication technology and artificial intelligence, the study of protection intelligent center is becoming the research focus. To make full use of the technology advance, the concept of protection intelligent center is proposed. The protection intelligent center is a remote center which can gather the electrical information of the whole network and give out tripping signals on the basis of analysis. In distribution network, the protection intelligent center could provide multiple protection with its local layer and center layer. This paper focuses on the cooperation method of different types of protection which protection intelligent center can participate in, and proposes a practical scheme which combines the protection deployed in local layer and central layer to reach an optimal protection performance. The protection method of the system proposed in this paper is complicated to achieve multi-space and multi-layer protection, so the verification of the protection cooperation is also provided in this paper.