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 intothe 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 digital substation secondary system. Background technique [0002] At present, the digital substation with primary equipment intelligence, secondary equipment networking, and communication platform standardization as the main features represents the future development direction of substations. The intelligence of primary equipment is embodied in electronic transformers and smart switches with digital output; the networking of secondary equipment is embodied in the communication of the upper and lower secondary equipment through the network; the standardization of communication platform is embodied in the IEC61850 standard. [0003] The secondary system of digital substation is an important part of the automatic control system of digital substation. The existing digital substation secondary system is usually composed of two-layer network and three-layer equipment networking group, w...

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.

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