1.
Automation & Operational
Excellence Tata Power case study
Mr. Jacob Joseph
26th November 2010
Automation Industry Association Annual Meet 2010
Vashi, Navi Mumbai

2.
Outline
About Tata Power
Challenges in Transmission and Distribution
Tata Power Automation Landscape
Way forward
Thrust Areas – Generation, Transmission & Distribution
Recap

3.
About Tata Power

4.
Tata Power
Tata Power is 100 years old India’s largest integrated private power utility
with operations spanning across the value chain – Fuel & Fuel Logistics,
Power generation (conventional & renewable), Power transmission,
distribution, Power Services and Power Trading
Tata Power has a first of its kind joint venture with Power Grid Corporation
of India for the 1200 km Tala Transmission Project
Expanding its horizon beyond India in countries like Australia, Singapore,
Indonesia, Netherlands, Bhutan, Nepal, Africa & the Middle East
Generation
Transmission &
Distribution
Retail

5.
Tata Power | Business Portfolio
2233 MW
15,946 MUs
Generation
Energy Served
1110 Kms
Transmission
Network
100,000
Consumers
1715 Kms
Distribution
Network
14,344 MW
UMPP
18
13
403
RSS DSS CSS
Power Services & Power Trading
Projects
in various
stages

6.
Renewable Energy
Wind
Leading private utility with 200 MW of installed wind capacity
India’s first 2 MW turbine installed at Visapur, India
Plans to add 500 MW over the next 3 years
We aspire to have a 2 GW installed wind capacity by 2017
Solar
3 MW grid connected pilot plant on Solar PV under progress
Actively pursuing Concentrated Solar, Solar Thermal and Rooftop
Solar options
Exploring opportunities up to 300 MW based on solar technology
Floating PV Solar
Equity stake in Geodynamics for enhanced geothermal technology
Geothermal
Participating in bid for 200 MW Indonesian geothermal opportunity
MoU with Gujarat Govt. (India) to explore geothermal potential

7.
Challenges in Transmission and Distribution

8.
Challenges in Transmission & Distribution
Capacity building, network planning and operational efficiency
Ageing infrastructure
Regulatory mandates
AT&C loss reduction, Energy accounting & Auditing
Business process efficiency, Reducing manual processes
Increasing pressure on service reliability (e.g. CAIDI, CAIFI)
Metering, Billing and Collection efficiency
Significant change in network dynamics with distributed energy resources
Open Access, Power Trading, Power Exchanges, UI, ABT, Banking of
Electricity Managing peak load requirements
Customer Engagement & Transformation

9.
Regulatory Mandates
Standards of
Performance
Period of Giving Supply
Quality of Supply
Power Supply Restoration time
Metering and Reconnection
Reliability Indices
Supply Code
Approval of Schedule of Charges for connection
Quantum of Security Deposit specified
Metering Arrangements to be as per the code
Metering and Reconnection
Specification of Billing Methodology
Consumer
Grievance
Methodology to address Consumer Grievance by the Forum specified
Appeal to Ombudsman in case of non redressal of the grievance by the
Forum

10.
Regulatory Mandates
Trans and Dist
Open Access
Non discriminatory Transmission open access introduced
Open access permitted for consumers >1 MVA by April 2007
Methodology for determination of surcharge being finalized
Incentive
For Thermal PLF > 80% @ 25 ps per Kwh
For Hydro if Capacity Index > 85% , 0.65 % of the Fixed Charge
For Transmission, incentive @1.02% of fixed charges for availability > 98%
Tariff
Regulations
Power Purchase by Distribution Licensee and procurement price to be
approved by MERC
For Hydro if Capacity Index > 85% , 0.65 % of the Fixed Charge
For Transmission, incentive @ 1.02% of fixed charges for availability > 98%

11.
Tata Power Automation Landscape

12.
Tata Power Automation Landscape
Plant Automation – Each of the generating stations have its own DCS
Transmission – Unified SCADA System, Nodal SCADA System
Distribution - Distribution Automation System, Metering, AMR enabled
meter
Enterprise Resource Planning (ERP) system SAP to manage various
business processes (e.g. HR, Finance &, Accounts, Procurement etc).
Oracle Hyperion for managing Balanced Score Card

13.
Challenges in Automation Implementation
Adoption of Open, Platform-independent & Scalable architecture
Adaptive communication & protection system
Data collaboration, communication and interoperability
Network & Cyber Security and role-based access
Disaster Recovery and Continuity Planning
Network Management and Analytics
Need of standardization – Interpretation by utilities and vendors is very
different
Vendor independent configuration tools
Integration platforms supporting technological options for legacy & new
systems, business logic & SW deployment
Integration of renewable sources

14.
Technology Enables Improvement
Technology enables improvement
Automated meter reading (AMR)
Remote disconnection & Reconnection
Outage monitoring and evaluation
SCADA
DSM and SM
Renewable Energy
Distributed, standby and off Grid
generation
Time-of-use Tariff
Islanding
Capacitor Control
Demand Responses
Phasor Measurement Unit
Availability
Reliability
Reduction
in O& M
Cost
Reduction in
commercial
losses
Increase
electricity
Supply
Customer
service
enhancement
applications

15.
Load Control Centre Automation

16.
Load Control Centre - Tata Power

17.
Load Control Centre - Functions
Nerve center for operation, Control, Monitoring and Planning of power system
Load forecasting, generation and outage planning of hydro and thermal
stations, power purchase from other constituents
Preparation of long-range and medium-range operation plan including outage
coordination for own system and in consultation with the load control center of
the neighbouring system.
Preparation of daily and hourly operating plans
Ensures uninterrupted power supply to consumer by real time load generation
balance, network availability, planning equipment outages considering
contingencies.
Monitors system security in terms of outages, generation, reserves and
loading on transmission lines / transformers
Initiates and monitors emergency measures like low frequency operation, load
shedding and system separation etc in line with accepted policies.
Energy balance and auditing of energy injection into the grid and sale to
consumers.

18.
EMS Applications – Load Control Center
Optimized monitoring, control and asset management of large electrical network is
achieved using real-time data and following EMS applications:
State Estimation
Contingency Analysis
Security Constrained Despatch
Voltage-VAR Control
Power Flow Analysis
Short Circuit Analysis
Automatic Generation Control
Economic Despatch
Optimal Power Flow
Load Shedding

19.
Transmission Automation

20.
Unified SCADA Architecture
NSS - 4
NSS
NSS - 1
NSS
WS
IED
Local Automation WAN
Local Automation WAN
WS
IED
SAT - 1
WS
IED
Local Automation WAN
Local Automation WAN
WS
IED
SAT - 7
WS
IED
SAT - 8
NSS - 5
NSS
WS
IED
Local Automation WAN
Local Automation WAN
WS
IED
SAT - 9
WS
IED
SAT - 10
NSS - 6
NSS
WS
Local Automation WAN
Local Automation WAN
WS
IED
SAT - 11
WS
IED
SAT - 2
IED
WS
IED
SAT - 12
NSS - 7
NSS - 2
NSS
WS
NSS
IED
Tata Power Automation
Tata Power Automation
WAN
WAN
Local Automation WAN
Local Automation WAN
WS
IED
SAT - 3
WS
IED
SAT - 13
WS
IED
SAT - 4
WS
WS
IED
SAT - 14
WS
IED
SAT - 15
IED
NSS - 8
Communication Equipment
NSS
Local Automation WAN
Local Automation WAN
WS
IED
SAT - 5
WS
IED
SAT - 6
IED
Local Automation WAN
Local Automation WAN
NSS - 3
NSS
WS
Operator Training
Simulator # 1
Operator Training
Simulator # 2
Operator Training Simulator
Unified
SCADA System # 1
Unified
SCADA System # 2
Central Control Room
Note: NSS - Nodal SCADA System, SAT – Satellite Station, WS – Workstation, IED – BCU/BCPU/RTU
WS
IED
Local Automation WAN
Local Automation WAN
WS
IED
SAT - 16

21.
Unified SCADA – Benefit Accrued
Features:
Platform and hardware independent system
Open & modular architecture, incremental expansion possible
Unified SCADA with 2,00,000 I/O points
8 Nodal Stations as backup to Unified
On line synchronisation between Unified and Nodal SCADA
Benefits
Centralised operation, reduction in manpower
Single source of data
Reduce response time to operate the electrical grid
Automatic Database Replication / Change Management
Geographical and schematic visualization of the whole electrical infrastructure on one
screen

22.
Distribution Automation

23.
Distribution Automation System
Alarm/Event Printer
Central Control Room
SMS -Maint Engr
(Application Servers, Database
Server & Operator Work Stations)
RTUs at CSS
Colour Printer
ZONAL CONTROL Centre 1
R
GPS
Clock
TPC
LAN/ WAN
CDMA CORE
TTML
CDMA
IEC -104 PROTOCOL
RTUs at CSS
ZONAL CONTROL Centre 2
RTUs at CSS
RTUs at CSS
ZONAL CONTROL Centre 4
RTUs at CSS
ZONAL CONTROL Centre 3
RTUs at CSS
ZONAL CONTROL Centre 5
Consumer Substation Automated (CSS) – 237
Distribution Substation (DSS) - 13

24.
Distribution Automation System
Efficient management of power network from Centralized and Zonal
system
Expedites fault detection, fault location and service restoration
Reduction in operating and maintenance costs
Improvement in performance indices e.g. CAIDI, CAIFI, SAIDI etc.
Improved demand, load, maintenance cycles, outage management
Improved use of existing grid assets to reduce grid congestion and
bottlenecks
Extension of asset life
Optimization of decision making

25.
Automated Meter Reading

26.
Automated Meter Reading / Advanced Metering
Infrastructure
Interface to
GIS, PI,
DMS
SAP
Custome
r Portals
Existing System
Firewall
MDAS
Interface for
Manual
Readings
Middleware
Firewall
Managed
Communication
Network
M
M
M
MDAS
(Others)
Meter Data
Management
System
Tata
Power
WAN
M
Meters with Proprietary or
Open protocol
Meter
Data
Archival
M
M
M
M

27.
Automated Meter Reading / Advanced Metering
Infrastructure
Automatic Meter Reading for accurate billing and reduction in cycle
time.
MIS reports for proper planning, monitoring, decision support
Ability to detect tamper events and outage occurrences, reduction in
losses
Consistent and granular data for improved accuracy
User defined data collection period, suitable for Time of Day tariff.
Web Portal for Customer
System capable for implementing AMI functions, disconnection /
reconnection

28.
Performance Monitoring

29.
Performance Monitoring System
Dash
Board
MANUAL
ENTRY
DCS
Open Systems
SCADA
OPC
Connectivity
Open Systems
AMR / ABT
OPC Connectivity
SAP
Applications
PI
R
Server (s) C DBM
onn
S
ect
ivit
y
Other Enterprise Applications
Staging
Database/
Oracle
Metering
Server (s)
OT Systems
IT Systems
MIS
BSC
Dash
Board
Local
Excel / web based
applications
used by Divisions

30.
MIS at Tata Power
PI System Installed at all the generating stations
Central PI Server installed for Corporate MIS purpose
Integration of Assets and technologies from various vendors
Performance parameters created on Divisional PI servers and
transferred to central PI server for MIS reporting
MIS software with make & check arrangement for automation of MIS
Data flow
Parameters available on Central PI server transferred to IT system on
daily basis for reporting
Web based dashboard
PI system a single solution for all the MIS worries of the organization

31.
Web Based Dashboard

32.
Web Based Dashboard

33.
Performance Measures

34.
CAIDI
Customer Average Interruption Duration Index
CAIDI of Direct Consumers (in Mnts)
7 7 .7 4 1
C A ID I o f D irect C o n su m ers (in
m n ts)
29
28.775
27.549
28
26.98
27
25.182
26
25.123
25
24
24
23
22
21
A ctu al till
Sep 10-11
A u g u st
Ye ar 10-11
P la n
Fiscal Year 10-11
2009-10
2008-09
20
2007-08
3 0 .7 8
30
Sep tem b er
2 5 .9 7 7
J u ly
2 4 .1 8 7
1 9 .2 6 1
M ay
2 3 .9 9 6
24
80
70
60
50
40
30
20
10
0
Year 10-11
P la n
C A ID I o f D ire c t
C o n s u m e rs
( in m n t s )
CAIDI of Direct Consumers (in Mnts)
Fiscal Year 10-11
Year 10-11 Plan April May June
July August September
2007-08
2008-09
2009-10
Year 10-11 P lan
A ugust
A ctual till Sep 10-11
CAIDI = Duration of Forced interruptions in the month / No. of Forced interruptions in the month

35.
CAIFI
Customer Average Interruption Frequency Index
CAIFI of Direct Consumers (in No.)
CAIFI of Direct Consumers (in No.)
2.0
3.5
1.0
1.0
1
0.8
0.6
0.4
0.2
Sep tem b er
A u g u st
Ju ly
Ju n e
M ay
A p ril
Year 10-11
Plan
0
April
May
June
July
August
September
2.000
1.982
1.872
2
1.5
Fiscal Year 10-11
Year 10-11 Plan
2.432
2.5
2007-08
2008-09
2009-10
Year 10-11 Plan
August
CAIFI = Number of Forced interruptions in the month / No. of Customers Affected in the month
A ctu al till
Sep 10-11
1.0
3
A u g u st
1.2
1.1
Year 10-11
Plan
1.2
3.039
2009-10
1.4
2.968
2008-09
1.6
1.6
2007-08
1.8
C A IF I o f D irect C o n su m ers (in n o s.)
C A IF I o f D irect C o n su m ers (in
n o s.)
2
Actual till Sep 10-11

36.
SAIFI
System Average Interruption Frequency Index
SAIFI of Direct Consumers (in No.)
SAIFI of Direct Consumers (in No.)
1.75
2.5
0.5
0.353
0.411
0.251
0.3
0.158 0.113 0.109
Sep tem b er
A u g u st
Ju ly
Ju n e
M ay
A p ril
Year 10-11
Plan
0.1
April
May
June
July
August
September
1.750
1.286
1.255
1.5
Fiscal Year 10-11
Year 10-11 Plan
1.766
2007-08
2008-09
2009-10
Year 10-11 Plan
August
SAIFI = Number of Forced interruptions in the month / No. of Customers Served in the month
A ctu al till
Sep 10-11
0.7
2
A u g u st
0.9
2.01
Year 10-11
Plan
1.1
2009-10
1.3
2.28
2008-09
1.5
2007-08
1.7
SA IF I o f D irect C o n su m ers (in n o s.)
SA IF I o f D irect C o n su m ers (in
n o s.)
1.9
Actual till Sep 10-11

37.
SAIDI
System Average Interruption Duration Index
SAIDI of Direct Consumers (in mnts.)
SAIDI of Direct Consumers (in mnts.)
42
70
8.462 7.924
10.1
8.758
6.068
5.1
6.421
4.11
Sep tem b er
A u g u st
Ju ly
Ju n e
M ay
A p ril
Year 10-11
Plan
0.1
April
May
June
July
August
September
40
41.743
35.322
30
20
Fiscal Year 10-11
Year 10-11 Plan
42.000
2007-08
2008-09
2009-10
Year 10-11 Plan
August
SAIDI = Duration of Forced interruptions in the month / No. of Consumers Served in the month
A ctu al till
Sep 10-11
15.1
44.331
A u g u st
20.1
50
Year 10-11
Plan
25.1
54.379
2009-10
30.1
60
2008-09
35.1
65.599
2007-08
40.1
SA ID I o f D irect C o n su m ers (in m n ts)
SA ID I o f D irect C o n su m ers (in
m n ts)
45.1
Actual till Sep 10-11

38.
Availability of all OH Lines : in %
Fiscal : 10-11

39.
Availability of all OH Lines : in %
Fiscal : 10-11

40.
Way Forward

41.
Thrust Areas
Transmission
Intelligent Network Control with Smart Islanding
Reactive control
IEDs integration with SCADA system
Distribution
Power Quality Management
Demand Side Management
Customer Service & Engagement
Automatic Metering Infrastructure
Generation
Power sale / Interchange
UI monitoring & Control
Control & Integration of renewable & Distributed Generation
…and adaption of Smart Grid technologies

42.
Recap
Challenges in Transmission and Distribution
Change in Energy Market
Journey of Automation in Tata Power
Way forward

43.
Vision Accomplishment
To be the most admired Integrated Power
and Energy Company delivering
sustainable value to all stakeholders

44.
Jacob Joseph
Deputy General Manager
Electrical Testing & Automation
The Tata Power Company Limited
Trombay, Chembur
Mumbai 400 074 (India)
jacob@tatapower.com
+91-22-6717 5301
+91-9223 332364