A method and system for distributed differential protection of distribution network based on 5G network

A differential protection and distribution network technology, applied in emergency protection circuit devices, electrical components, etc., can solve the problems of unfavorable differential protection in the distribution network, lack of optical fiber laying conditions, and difficult construction. The effect of reliable communication, convenient access and low cost
CN110838713BActive Publication Date: 2021-01-01SHANDONG UNIV
5 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG UNIV
Publication Date
2021-01-01

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a power distribution network distributed differential protection method and system based on a 5G network. The method comprises the steps: in the case of signal transmission between digital protection devices, a communication channel based on the 5G network is used for communication, thereby achieving data interaction between the two digital protection devices; a 5G slice network is used as a communication channel, the communication security is ensured, and on the basis of the low time delay characteristic of 5G communication, a data link is optimized through the slice network to minimize the link transmission hop count and further reduce the time delay of data transmission; the digital protection devices are used to simultaneously carry out overcurrent detection oncurrents at two ends of a power distribution network line, the respective overcurrent moment is taken as a synchronization time reference of the digital protection devices at two ends of the line, once overcurrent is detected, the digital protection devices start, starting signals are sent to opposite ends, and after the digital protection devices start, current fault component values after faultstarting are calculated, and after calculation, current fault component data are transmitted to the opposite ends.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of relay protection for power system distribution network, and in particular relates to a distributed differential protection method and system for distribution network based on 5G network. Background technique

[0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art.

[0003] With the development of industrial technology and the improvement of people's quality of life, the society has higher requirements for the reliability of power supply. The traditional single-ended power distribution open-loop operation mode has low power supply reliability and is difficult to meet user needs. Moreover, the closed-loop operation mode of the distribution network is more suitable for the friendly access of distributed generation (DG), and it also has advantages in improving power quality. More and more regions have begun to ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More