ATN-400 Automation System for Power Plant Generator Sets

The Automation System for Power Plant Generator Sets is a specialized solution developed by our company. It leverages years of operational experience in thermal power plant automation while fully considering specific user requirements. The system primarily consists of network communications, video imaging, microcomputer protection systems, and computer monitoring systems.

Automation System for Power Plant Generator Sets

The system provides comprehensive monitoring and control over critical objects and parameters essential to the operation of waste heat recovery units. This includes:

• Power Supply and Distribution Systems
• Instrumentation and Hydraulic Systems
• Unit Control Systems
• DC Systems
  By ensuring the effective monitoring of commands, images, and data, the system eliminates hidden operational hazards and guarantees high equipment integrity and regulation rates. Furthermore, it reduces the labor intensity of personnel, enabling a management level characterized by unmanned or minimally staffed operation.

System Architecture

The system utilizes a fully hierarchical, distributed, open, and modular architecture. This design ensures excellent reliability, scalability, and portability, making it suitable for both new power plant constructions and the automation retrofitting of existing facilities of all scales.

Core List of Secondary Electrical Equipment for Thermal Power Plants

No.	System Category	Equipment Name	Main Function
1	Relay Protection	Generator-Transformer Protection Relay	Electrical protection for generator, main transformer, unit auxiliary transformer, and excitation transformer (differential, backup, stator ground, loss of field, overexcitation, etc.)
2	Relay Protection	Non-Electrical Protection Relay	Non-electrical protection for gas, temperature, pressure, etc.
3	Relay Protection	Startup/Standby Transformer Protection Relay	Electrical protection for startup/standby transformer
4	Relay Protection	Auxiliary Power Protection Relay	Protection for HV auxiliary transformers and LV auxiliary transformers
5	Relay Protection	HV Motor Protection Relay	Protection for HV motors such as feed pumps, ID fans, FD fans
6	Relay Protection	Fault Recorder	Records fault waveforms of generator-transformer unit and switchyard for fault analysis
7	Relay Protection	Line / Busbar Protection Relay	Protection for outgoing lines, busbar differential, and circuit breakers
8	Automatic Devices	Excitation Regulator (AVR)	Automatically adjusts generator excitation current to maintain terminal voltage stability
9	Automatic Devices	Automatic Synchronizer	Automatically captures synchronization point during generator grid connection
10	Automatic Devices	Fast Bus Transfer Device	Fast transfer between normal and standby auxiliary power supplies
11	Automatic Devices	Automatic Transfer Switch (ATS)	Automatic switching of emergency power supply
12	Monitoring System	Distributed Control System (DCS)	Centralized monitoring of boiler, turbine, and generator (including DAS, MCS, SCS, ECS, etc.)
13	Monitoring System	Electrical Control System (ECS)	Electrical monitoring of generator-transformer unit and auxiliary power system (integrated into DCS or standalone)
14	Monitoring System	Data Communication Gateway	Data exchange with grid dispatch center (telecommunication)
15	Monitoring System	Operator Station / Engineer Station	HMI for operation monitoring and configuration maintenance
16	Metering & Measurement	Transmitter Panel	Converts CT and PT secondary signals into standard analog or digital signals
17	Metering & Measurement	Energy Metering Panel	Metering at point of common coupling and auxiliary power
18	Power Supply	DC System	Provides stable DC power for protection, control, and signaling circuits
19	Power Supply	Uninterruptible Power Supply (UPS)	Provides uninterrupted AC power for DCS, monitoring system, etc.
20	Power Supply	Battery Bank	Backup power supply for DC system
21	Control & Operation	Synchronizing Panel	Interface for manual and automatic synchronizing operation
22	Control & Operation	Test Power Panel	Provides adjustable power for on-site protection relay calibration
23	Control & Operation	Auxiliary Relay Panel	Expanding outputs, signal conversion, and intermediate interlocking circuits
24	Auxiliary System	Time Synchronization System (GPS/BeiDou)	Station-wide secondary equipment time synchronization
25	Auxiliary System	FGD / DeNOx Control System	Automation control for environmental protection facilities
26	Auxiliary System	Coal Handling Control System	Programmed control of coal conveyors, crushers, etc.
27	Auxiliary System	Water Treatment Control System	Automatic control of boiler make-up water and condensate polishing

Please contact our protection relay engineering team to request product specifications and solution overviews. We will select the appropriate models and develop a customized solution based on your requirements.