SYSTEM CONFIGURATION FOR PLANT CONTROLSI. Unit Coordination and boiler modulating control system

System configuration for plant control yang digunakan untuk mengontrol keseluruhansystem pada power plant yang disebut dengan UCS ( Unit Coordination and boilermodulating control system). UCS Mengatur 2 bagian yaitu : Boiler control dan Turbinecontrol.

Boiler control dibagi menjadi beberapa bagian yaitu1. BMS (burner Management Control system)Merupakan salah kontrol yang ada diboiler yang mengatur :

a. Furnace Purge Untuk Reset MFTb. Fuel Oil Leak test untuk MFT resetc. Start dan Shut Down Primary air systemd. Fuel Oil Burner Controle. Coal Burner Control2. BPS ( Boiler Protection system)3. BSQ (Boiler Sequence control system)

Turbine Control sytem dibagi menjadi beberapa bagian antara Lain :1. MT-DEHC : Digital electro Hydraulic system for Main turbine2. TSQ : Turbine Sequence anda modulation control system3. BFPT A/B D-EHC : Digital electro Hydraulic system for BFPT A and BFPT B4. D-AVR : Digital Automatic Voltage regulator

5. Plant Automatic Control system6. SOE : Sequence of Event7. TSI : Turbine Supervisory InstrumentFungsi Utama dari UCS adalah mengontrol output generator melalui pengaturan :1. Unit Coordinate Control2. Combustion control : Air Flow dan Fuel Oil Flow3. Furnace Draft Control4. Feed Water dan Drum Level Control5. Steam Temperature Control6. Primary air Flow/Outlet Temperature Control7. Primary Air Pressure Control8. Auxiliary Steam Presure control9. AH Cold end metal Temp Control10. Windbox Damper Control11. Burner Atomizing steam temperature and pressure control12. Burner Atomizing air pressure control13. SH and RH temperature Control14. Chemical Injection Control15. Pulverizer inerting pressure and Temperature Control16. Boiler Blowdown tank level and Tem Temperature Control17. Sootblower Pressure control18. Turbine Bypass Controll

Ada Beberapa Control yang mempunyai system yang saling berhubungan satu sama lainyaitu :

1. MW and Main steam Pressure Control2. Feedwater control3. Fuel Flow Control

a. Cross Limit For Upper Limit

4. Air Flow Control

5. Draft control6. SH and RH temperature Control

II. HMIHuman-Machine Interface (HMI) stations provide state-of-the-art process operation and

monitoring for power plants. There are two types of HMI Station, the Operator Station(OPS), which provides tailor-made views for plant operation, and the Server Station (SVS),which handles archival data in addition to providing the same functions as the OPS. Fullyindependent HMI Stations consisting of the OPS and SVS realize a completely distributedsystem for better reliability. Each OPS and SVS in a system independently receives plantcontrol data through the C-NET and failure of any OPS never affects data processing of otherOPS and SVS stations. Even if the SVS fails, only archival data is affected. On the otherhand, if a server fails in the case of server/client system, plant operation via all the relatedclient stations will be impossible

The Integrated Engineering Station (IES) provides a comprehensive set of engineeringand maintenance functions for the HMI and ACS. The Information Network (I-NET) is usedfor information data transmission between OPS, SVS and peripherals.

III. Unit Operation Mode1. Coordinate control mode (CC)

Requirements :- Boiler Control ( Fuel ,Air and Draft Control ) in Auto Mode- Turbine Control in Auto Mode ( Gov Control,Turbine Master,MSP SV,HPT BV)- CC Controls Generator MW and Boiler Controls Main steam press

2. Boiler Follow Mode (BF)Requirement ;-Boiler Control in auto- Turbine Master Isnot Auto- Boiler Controls Main steam Pressure, MW can be adjusted by Gov Manually-Condition : StartUp and FCB

3. Turbine Follow Mode (TF)- Boiler Master is Not Auto- Turbine Master is Auto

- Gov Controls main steam pressure and maintain the unit, Boiler Input DemandConstant

4. Boiler and Turbine Manual Mode (BTMAN)