FSSS

SUPCON Automation Solution

For Power Plant

WWW.SUPCON.COM/EN

SUPCON GROUP CO.,LTD.

PO

WE

RP

LA

NT

In recent years, each industrial has got a very fast development, and the demand for electrical

power is got bigger and bigger. With the pressure of global energy sources crisis and environment

pollution, more and more high requirements are to the automatic control of firepower unit. At present,

the automation system of the power plant has been developing from the unit level, power generator

unit control level to system level and integration level. The electric power industry not only requires

realizing the production automation of the power plant, but to realize the integration of automation

control and management for the full production process. The total solution of SUPCON includes the

following four parts:

DCS control scheme for the production process of power plant ?Control scheme for the system

junction of the auxiliary devices in the power plant

Plant level real time data monitoring information SIS system

Management scheme for the plant level management information MIS system

Preface

1

SUPCON Automation Solution For Power Plant

www.supcon.com/en

Production process for firepower plant

2www.supcon.com/en

SUPCON Automation Solution For Power Plant

As for the power units, boiler, steam turbine and generator are the three units, and their process

control has the following two characteristics:

For the generating capacity of the firepower plant is controlled by the network, and the electrical

energy can not be stored, when the load changing, the generator unit are requested to real time

responding the command from the network , and immediately participate in the load regulation

(generating capacity peak value) and frequency regulation (power supplying frequency).

For the firepower unit, any one input variable (e.g. the changing of pulverized coal) of the main

equipments will not only have influence on the changing of other output variables of the body

equipment (this is called coupling in control theory), and will also have influence on the changing of

output variables of other relative main equipments e.g. steam turbine, generator and other auxiliary

equipments. That is to say, when considering the boiler control, the control of steam turbine and

generator shall be considered synchronously, and vice versa. This makes the control of the full

generator units more complicated.

Participating in the frequency regulation and load regulation of the network

More complicated multivariable coupling

DCS system for the power plant

SUPCON DCS control total solution for power plant production process includes the following

systems:

Data acquisition and data processing

MCS analog signal control system

SCS sequence control system

FSSS-furnace safeguard supervisory system

ETS-steam turbine emergency trip protection system

DEH steam turbine Digital Electrical Hydraulic control system

ECS electricity control system

1 DAS Data Acquisition System

The function of DAS is to directly acquire data from the process objects through the I/O modules,

and can also acquire and deal with the signals which are relative with the units from the other

subsystems e.g. MCS, SCS and etc. The monitoring and operation of the process can be executed

on the operator station. The functions of DAS mainly include:

Record and print for shift form, on-duty form, daily form, monthly form and alarm form

Analog menu displaying, real-time data displaying, trending curve displaying

History data archiving, history trending recording, and event sequence recording (SOE)

Operation state monitoring and fault diagnosis for hardware

Data display menu

3www.supcon.com/en

SUPCON Automation Solution For Power Plant

Flowchart menu

Trending graphics

Fault diagnosis graphics

4www.supcon.com/en

SUPCON Automation Solution For Power Plant

2 MCS Modulate Control System

The control functions of MCS mainly include:

Coordination Control

Automatically adjust fuel

Automatically adjust forced draft

Automatically adjust furnace negative pressure

Automatically adjust boiler water level

Automatically adjust superheated steam temperature

Automatically adjust reheat steam temperature

Automatically adjust main steam pressure

Automatically adjust milling system

Condenser hot well level control

Deaerator level control

Deaerator pressure control

3 SCS Sequence Control System

The control functions of SCS mainly include:

Pulverizer, coal feeder, mill exhauster automatically start/stop sequence control

and interlock protection

Forced draft fan, induced draft fan, air preheater automatically start/stop sequence

control and interlock protection

Feed-water pump automatically start/stop sequence control

Condensation water pump automatically start/stop sequence control

Circulating pump automatically start/stop sequence control

Water jetting pump automatically start/stop sequence control

Speed governing oil pump automatically start/stop sequence control

Generator cooling water pump automatically start/stop sequence control

AC/DC lubrication oil pump automatically start/stop sequence control

High/low pressure heater steam valve, draining valve automatically start/stop

sequence control

5www.supcon.com/en

SUPCON Automation Solution For Power Plant

4 FSSS Furnace Safeguard Supervisory System

The functions of FSSS mainly include:

Clean control before ignition and after furnace shutdown

Fuel oil leakage testing

Flame detection function

Boiler ignition and ignitors control

Pulverized coal burner control

Main fuel trip (MFT)

Fuel oil trip (OFT)

6www.supcon.com/en

SUPCON Automation Solution For Power Plant

5 ETS Emergency Trip System

When something emergency has happened in the steam turbine, the ETS system will automatically

emergency trip to make it shutdown, and to guarantee the safety of personnel.

The condition for ETS trip: (once one of the following situations happens, and the trip command will

be sent out.)

Large libration of steam turbine bearing brass

Large axial displacement

Large differential expansion

High thrust bearing temperature

High bearing oil back temperature

Low lubrication pressure

Low condenser vacuum

High extraction pressure

Steam turbine overspeed

MFT

Generator-transformer unit protection

Manual emergency shutdown

6 DEH Digital Electrical Hydraulic

The basic control function of DEH system is to control the rotate speed and load of steam turbine.

The low pressure turbine oil DEH shall be adopted to small-scale steam turbine to realize pure

electric adjusting control. It can operate safely and economically under the following operation

modes: boiler follow, steam turbine follow, coordinated control, variable press (sliding press)

operation, constant pressure operation, manual mode. The main control functions of DEH system

include:

Speed-up control

Rotate speed and load control

Thermal stress calculating and sequence control for start and stop

Overspeed limitation and protection

Remote control latched, open the door of main steam, emergency shutoff

All kinds of testing function

7www.supcon.com/en

SUPCON Automation Solution For Power Plant

7 ECS Electricity Control System

ECS is one part of DCS system, the main supervision and control scope includes: generator,

transformer, high/low voltage power supply system, UPS, DC system, standby power supply and

auxiliary systems related to the generator set.

Generator excitation regulation system monitoring

Generator automatic accurate synchronization monitoring

Generator circuit breaker monitoring

Main transformer system monitoring

Plant power usage system monitoring

8www.supcon.com/en

SUPCON Automation Solution For Power Plant

Control scheme for the system interconnection

of auxiliary equipments in the power plant

Control systems for auxiliary equipments in the power plant mainly include:

Coal conveying equipment control system

Chemical water treatment equipment control system

Industrial water control system

Waste water treatment control system

Electric dust removal control system

Ash handling and ash residue handling control system

Fire protection pump control system

Air compressor control system

For the auxiliary equipment control systems of the power plant are distributed widely, and are always

independent with one another. For a consideration of the management of the full plant, the above

mentioned control systems shall be interconnected and controlled in the upper level.

SUPCON DCS have standardized hardware and software interface, and is easy to realize the

interconnection with the advanced field bus equipments, the third party control systems, logic

controllers and etc., and with the remote medium to realize the control of remote operating, and to

get the purpose of interconnecting control for the auxiliary equipment control systems of the plant.

Chemical water treatment control menu of one plant

9www.supcon.com/en

SUPCON Automation Solution For Power Plant

Flue gas dedust control menu of one plant

Ash handling and ash residue handling control menu of one plant

10www.supcon.com/en

SUPCON Automation Solution For Power Plant

Function of plant level real-time data information SIS system

1. The main function of SIS system

2. The composition of SIS system

Production process information supervising, calculating and analyzing

Plant level and unit performance calculation analyzing and operation instructing

Operation dispatching and unit load optimization assignment

Equipment condition supervising and fault diagnosing

Unit and equipment life management

SIS system offer abundant real time data platform:

Interface with each kinds of control system

Through the interface to acquire the data and deposit it in the real-time or history database

Provide a powerful tool to manage the database

Establish the process menu, and browse the information in the database with the type of menu

Analyze the information in the database with the type of trend

Make all kinds of report form and record

The key for finishing SIS system function is to have a real time/history database and a set of matured

and excellent application software. Take the real time monitoring information system of SUPCON as

example; the following optimized application software package has been developed in this system:

Plant level production process real time running supervising

Unit operation performance calculating and analyzing

Operating instruction for performance optimization

Resource expense analyzing for unit operation ? Fault diagnosing for unit operation

Plant level load optimized distribution

Unit life evaluating

Equipment condition examining and calculation analyzing

The above mentioned software package include optimization control software, performance

calculating software, life management software, fault diagnosing software and maintenance

management software of year 2000 design principle of power plant instruments and control (I&C)

system which is put forward by Electric Power Planning and Designing Institute. And it is the

combination of a series of power plant production process optimization and management software.

Function of plant level management information system (MIS)

With the continuously development of computer technology, network technology, communication

technology, and the requirements of modern enterprise system and management, to share enter-

prise’s information resource, provide the best services for production, operating, management,

timely and effectively offer reliable decision basis for enterprise’s leader level has became neces-

sary. SUPCON combines automatic control system configuration and management information

system MIS according to the requirement of the power plant, and having flexible function

design. The design content includes: general structure frame, professional subsystem design,

database system design, computer network system design etc. The main functions are as following,

but not limit to the following:

Enterprise planning

Capital construction plan

Production planning

Production plan appraisal

Power consumption and load forecasting

Accomplishment analyzing for production plan

Planning for sales

Design and construction plan management

1 Planning and budget

11www.supcon.com/en

SUPCON Automation Solution For Power Plant

ConclusionSUPCON was established in 1993, based upon the solid scientific research foundation of the

National Industrial Automation Engineering Research Center, the National Key Laboratory of

Industrial Control Technology and the Institute of Advanced Process Control of Zhejiang University,

SUPCON has well blended the multi-disciplinary advantage of Zhejiang University with its own

scientific research expertise, SUPCON not only have strong technical strength in R&D and produc-

tion of industrial automation product, also is an outstanding supplier of industrial automation

software. SUPCON will dedicate itself to provide the best total solution to power industry to realize

the integration of management and control.

2 Financial management

3 Production safety management

4 Stat.

5 Warehouse management

6 Human resource management

Earmarked fund management

Fixed capital management

Working capital management

Construction contract management

Power charge management

Power generation operation management

Power generation examination and maintenance management

Reliability stat.

Reducing coal-fired consumption management

Technical supervision management

Technical reconstruction project management

Safety stat.

Safety precautions setting up

Safety equipment project reviewing and evaluating

Person accident management

Device accident management

Boiler and pressure vessel supervision

Maintenance equipments management

Power output stat.

Load monitoring devices stat.

Reactive compensation devices stat.

Fuel economy analyzing

Fuel ordering

Supervision for the usage of labor protection

Spare parts management

Employee training appraisal

Planning for the employee’s education and training

Archives management

Health care management

SUPCON GROUP CO.,LTD.

Add:SUPCON Park,Liuhe Road,Binjiang District,Hangzhou,China

P.C:310053

Tel:+86-571-86667365

Fax:+86-571-86667370

E-mail:[email protected]

http://www.supcon.com/en