Digital transformer station secondary system

Abstract

The invention relates to a digital transformer station secondary system which comprises a background monitor workstation, a remote workstation, a protecting device, a measure and control device, a switch device and an electronic mutual inductor. The system has the main technical characteristics that the background monitor workstation, the remote workstation, the protecting device and the measure and control device are connected onto all-station network by an optical fiber interface; the measure and control device is a local measure and control device which is connected with data of the electronic mutual inductor through another optical fiber interface and connected with outside input data by an I/O interface. The system combines station control layer network and process layer network into the all-station network, so as to lead the network of the system to be better simplified, be convenient for the network configuration of a digital transformer station, save the investment of a digital transformer station secondary device, reduce the maintenance of the digital transformer station, and improve the working efficiency.

Description

technical field [0001] The invention belongs to the field of digital substations, in particular to a secondary system of a digital substation. Background technique [0002] At present, the digital substation, which is mainly characterized by intelligent primary equipment, networked secondary equipment, and standardized communication platform, represents the future development direction of substations. The intelligence of the primary equipment is reflected in the electronic transformer and intelligent switch with digital output; the network of the secondary equipment is reflected in the communication between the upper and lower connections of the secondary equipment through the network; the standardization of the communication platform is reflected in the IEC61850 standard. [0003] The digital substation secondary system is an important part of the digital substation automation control system. The existing digital substation secondary system usually consists of a two-layer ...

AI Technical Summary

Problems solved by technology

In the above system, an intelligent control unit is connected to the primary equipment on site, and is responsible for collecting the information of the primary equipment and executing the control orders of the protection device and the measurement and control device. The information collected by the intelligent control unit is sent to the measurement and control device and protection through the process layer network. device, the measurement and control device forwards the information to the background control system and telecontrol workstation in the station control layer through the station control layer network. The structure is complex and many equipments are used, resulting in large equipment investment and difficult maintenance.

Images