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Integrated substation automation system


Time:

2023-06-21

The integrated function is the biggest feature that distinguishes it from conventional substation, which is based on computer technology, data communication as a means, and information sharing as a goal.

Comprehensive substation automation system is a kind of comprehensive automation system which uses advanced computer technology, modern electronic technology, communication technology and information processing technology to realise the function of secondary equipment of substation (including relay protection, control, measurement, signaling, fault recording, automation device and telecontrol device, etc.) to reassemble and optimize the design, and monitor, measure, control and coordinate the operation of all the equipments of the substation. Comprehensive automation system. By exchanging information and sharing data among the equipment in the substation automation system, it can complete the monitoring and control tasks of substation operation. Substation integrated automation replaces the conventional secondary equipment of substation and simplifies the secondary wiring of substation. Substation automation is an important technical measure to improve the level of safe and stable operation of substations, reduce operation and maintenance costs, improve economic efficiency, and provide users with high-quality power.

The integrated function is the biggest feature that distinguishes it from conventional substation, which is based on computer technology, data communication as a means, and information sharing as a goal.

 

Basic features

(1) Functions to achieve integration. Substation automation technology is developed on the basis of microcomputer technology, data communication technology and automation technology. It integrates all the secondary equipments except primary equipments and AC and DC power supplies in the substation.

(2) System composition modular. The digitalisation of the protection, control and measurement devices (realised by microcomputer and with digital communication capability) facilitates the connection of the functional modules through the communication network, and facilitates the expansion of the interface functional modules and the sharing of information. In addition, the modular composition of the substation to facilitate the implementation of integrated automation system module configuration to adapt to the project's centralised, decentralised and distributed structure of the centralised group screen and other ways.

(3) Structure distribution, layering and decentralisation. Comprehensive automation system is a distributed system, in which the microcomputer protection, data acquisition and control and other intelligent devices and other subsystems are designed according to the distributed structure, each subsystem may have more than one CPU to complete different functions, respectively, by the huge CPU group constitutes a complete, highly coordinated organic integrated system.

(4) operation and monitoring screen. Substation to achieve integrated automation, whether manned or unmanned, the operator is not in the substation, or in the main control station, or in the main control station or dispatching room, facing the colour screen display, the substation equipment and transmission lines for all-round monitoring and operation.

(5) communication local area network, optical fibre. Computer local area network technology and optical fibre communication technology in the comprehensive automation system is commonly used.

(6) Intelligent operation and management. Intelligent not only in the regular automation functions, but also in the ability to online self-diagnosis, and diagnostic results sent to the remote main control terminal

(7) Measurement and display digital. The use of microcomputer monitoring system, conventional pointer instrumentation is replaced by CRT monitors. Manual transcription records are replaced by printers.