The Electrohydraulic Turbine Controller

NPC DOC. NO. TAPP-3/64110/5526/DN/R0---------------------------------4 13300 00 486 ---REV. NO. 01

WRITE UP ON ELECTROHYDRAULIC TURBINE CONTROLLER ( EHTC )
Reference Documents: 1.MPL for Steam Turbine Doc. No. :- 41330000488(TAPP3/64110/5516/SCH) 2.Scheme for speed measurement turbine and generator Doc. No. :- 41330098204(TAPP3/64110/5512/DN) 3.Write up on LRR for MSCV and AEOR Doc. No. :- 41330000481(TAPP3/64110/5661/DN) 4.OGA of TG control desk 6610 – PL – 9 Doc. No. :- 06560000403(TAPP3/64100/5724/GA) 5.OGA of TG control desk 6610 – PL – 10 Doc. No. :- 06560000404(TAPP3/64100/5725/GA) 6.Turbine controller – CJJ01 – Cubicle & Rack assembly diagram Doc. No. :- 36560001746(TAPP3/64100/5728/GA) 7.Turbine controller – CJJ01 – Signal Flow Diagram(SFD) Doc. No. :- ED-031027-SF-S105(TAPP3/64100/5729/WD) 8.Turbine controller – CJJ01 – Functional Diagram(FCD) Doc. No. :- ED-031027-FC-S105(TAPP3/64100/5729/WD)
NPC. DOC. NO. TAPP3/64110/5526/DN/R0

01 00 REV

1.10.02 17.11.02 DATE

REVISED AS PER BS RANA NPC COMMENTS FIRST ISSUE REMARKS V. KUMAR WORKED

BS RANA BS RANA CHECKED A. ALI APPROVED

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Electro-hydraulic turbine controller INDEX 1 2 3 3.1 3.2 4 4.1 4.2 5 5.1 5.1.1 5.1.2 5.1.3 5.1.4 5.2 5.2.1 5.2.2 5.2.3 5.2.4 5.2.5 5.2.6 5.3 5.4 5.5 5.5.1 5.5.2 5.5.3 6 7 8 8.1 8.2 8.3 8.4 9 Introduction Turbine Control System Hydraulic Controller Hydraulic Amplifier and Electro hydraulic Converter Load Rejection Relay Electro hydraulic Controller Control Requirements for Electro hydraulic Controller Structure of Electro hydraulic Controller Control Loops of Electro hydraulic Controller Speed Control Loop Speed Set point Adjuster Speed Set point Control Actual Speed Derivation Speed Controller Lift Set point control loop Lift Set point