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Akhil Ashok

This document discusses the implementation of a new load shedding scheme using SCADA at the BPCL-KR refinery in Kochi, India. It provides background on the refinery and describes the existing manual and under-frequency based load shedding scheme. The new SCADA-based scheme allows for more precise load segregation and shedding based on real-time power balance calculations to trip the necessary load when there is a power deficit. The conclusion states that implementing SCADA will provide more stable plant operation and control over the complex power network from a central control room.

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WELCOME IMPLEMENTATION OF NEW LOAD SHEDDING SCHEME IN BPCL-KR USING SCADA AKHIL ASHOK T V ALEENA 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.
SINGLE LINE DIAGRAM
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
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  • 1. WELCOME IMPLEMENTATION OF NEW LOAD SHEDDING SCHEME IN BPCL-KR USING SCADA AKHIL ASHOK T V ALEENA FERNANDEZ
  • 2. INTRODUCTION • BPCL KR a MAH installation • Automation using SCADA • Aim – study of existing load shedding scheme & SCADA based load shedding scheme
  • 3. 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.
  • 4. • 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.
  • 6. 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
  • 7. LOAD SHEDDING • Power system normal condition – adequate generating to meet load • Load shedding – imbalance b/w supply & demand • Types – fast & slow • Ways – manual & automatic
  • 8. 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
  • 9. SCADA • Supervisory Control and Data Acquisition • Monitor & control – distributed process • MTU – master terminal unit • RTU – remote terminal unit • HMI – human machine interface
  • 10. 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
  • 11. CONCLUSION • Complex network – central control room • Obtain stable plant operation – instability in supply • Application of SCADA – various levels • Replace conventional relays – numerical relays