Date post: | 07-Aug-2015 |
Category: |
Documents |
Upload: | akhil-ashok |
View: | 76 times |
Download: | 0 times |
WELCOME IMPLEMENTATION OF NEW LOAD
SHEDDING SCHEME IN BPCL-KR USING SCADA
AKHIL ASHOK T VALEENA FERNANDEZ
INTRODUCTION
• BPCL KR a MAH installation• Automation using SCADA• Aim – study of existing load shedding scheme & SCADA based load shedding scheme
ABOUT BPCL KR
• Kochi Refinery, a unit of Bharat Petroleum Corporation Limited (BPCL), embarked on its journey in 1966 with a capacity of 50,000 barrels per day.
• BPCL KR - Ambalamugal near the city of Kochi in Kerala
• The refinery has facilities to evacuate products to the consuming centers through road, rail, ships and through pipelines.
• The BPCL installation at Irumpanam, to which the refinery is connected by pipelines, is the major product distribution centre of the refinery.
• Kochi Refinery has taken it as a mission to make safe living and working a natural mantra of its employees, contract workers, customers and the general public.
POWER SYSTEM IN KR
• 2 KSEB 220 KV grid• GTG 1 22 MW at 11 KV level• GTG 2 34.5 MW at 11 KV level• STG 17.8 MW at 11 KV level• TG 25 MW at 3.3 KV level• 2 switch gears 33 KV (HT101) and 11 KV (GIS)• Critical loads 19.5 MW
LOAD SHEDDING
• Power system normal condition – adequate generating to meet load
• Load shedding – imbalance b/w supply & demand
• Types – fast & slow• Ways – manual & automatic
EXISTING LOAD SHEDDING SCHEME
• Types – overloading of generators under frequency based• Feeder based load shedding scheme• Frequency wise load shedding• 123.dotx• Under frequency relays – 7RW 600• Limitation – load segregation not possible
SCADA
• Supervisory Control and Data Acquisition• Monitor & control – distributed process• MTU – master terminal unit• RTU – remote terminal unit• HMI – human machine interface
SCADA BASED
• Power deficit – load shedding initiated• Power balance calculation - Load to be tripped=Total load-(Total
generation + Margins available in running generators)
• Tripping command – pre set priority
CONCLUSION
• Complex network – central control room • Obtain stable plant operation – instability in
supply• Application of SCADA – various levels• Replace conventional relays – numerical relays