1. BSES Yamuna Power Limited
BSES Yamuna Power Limited (BYPL) a leading
power distribution company in Delhi caters to a
geographical area of around 200 sq kms. The
company supplies electricity to over 12 lakh
customers covering a population base of nearly 48
lakhs in Central and East Delhi. The company's
unparalleled achievements in the electricity
distribution sector in Delhi stands out as the most
“successful” experiment and replicable model” of
Public-Private-Partnership (PPP) - anywhere in the
country.
BSES Yamuna Power Limited - AT & C Loss Reduction
Opening
level
(July 2002)
0
10
20
30
40
50
60
70
63.16
61.88
54.29
50.12
43.6
39.03
29.8
24.44 23.11
19.89
17.83
Percentage(%)
FY03 FY04 FY05 FY06 FY07 FY08 FY09 FY10 FY11 FY12
Years
Record
Reduction
of 45.3%
Our Network:
S.No. ITEMS NETWORK NETWORK %
2012-13 2002-03 INCREASE
1 No. of Grids 50 40 25
2 No. of Power Transformers 137 98 40
3 EHV Capacity (MVA) 2884 1863 55
4 EHV Cable Length/ Line
Length Laid (Km) 745 363 105
5 No. of 66 & 33 KV Feeders 144 89 62
6 Shunt Capacitors (MVAr) 932 573 63
7 No. of Distribution Transformer 3271 2657 23
8 Distribution Transformers
Capacity (MVA) 2327 1704 37
9 No. of 11 KV Feeders 723 476 52
10 11 KV Cables laid (Kms) 1770 1303 36
11 11 KV Lines laid (Kms) 249 145 72
12 Total No. of LT Feeders 13280 10193 30
13 LT Lines laid (Kms) 5558 4589 21
DEC2012
Produced by BSES Yamuna Power Limited
Corporate Communications Department
Shakti Kiran Building, Karkardooma
Delhi - 110 032
Supreme Court of India "We are
satisfied that the power situation
in the city(Delhi) has improved
tremendously" - Nov, 2012
For more information
please contact Mr. Deepanshu Agarwal
Email ID: byplbd@relianceada.com
Contact no: 011 39992030
M D S
Modular Integrated
Distribution Automation System
131 BYPL Package Substation
1257 BYPL Indoor Substation
893 BYPL Outdoor Substation
83.1%
Growth
BYPL Peak Demand Met (MW)
0
500
1000
1500
2002
798
2010 2011 20122009
1057
1131
1195
1461
Indian 11KV
Smart Grid Solution
Indian 11KV
Smart Grid Solution
Indian 11KV
Smart Grid Solution
Indian 11KV
Smart Grid SolutionBSES’ DISTRIBUTION
SUB-STATIONS:
Lowers energy to 200/400
volts for distribution
Residential coloniesOffice blocksHugh-rise apartments
Underground cables &
transmission lines
Transformers
DISCOM: BSES Sub-Sations
further reduce voltage for
distributing power within the city
TRANSCO: Sub-Stations
steps down voltage for
supplying to Discoms
POWER SOURCE
he city is fed by
five plants in Delhi,
the rest of the
demand is met from
the Northern Grid
and other states
T
BIG USERS: Large
industrial houses
usually have their own
Sub-Stations
This is how your house gets power...
save time, save fuel, save money
log on to www.bsesdelhi.com
Just dial 399-99-808 and press...
8 9
0 #
321
64 5
7
1
Power
Supply
4
Door Step
service
2
SoS Fire/Shock
3
Bill or Meter
7
Duplicate
Bills
6
Report Power theft/
Corruption
5
Key /Government
Consumer Cell
A ISO 14001, ISO 9001, OHSAS 18001, ISO 27001, ISO 17025 Recognized Power Utility Company
BSES Yamuna Power Limited has set a national
record in AT&C loss reduction of 45.3% - more than
4.5% loss reduction per year against the National
Averageof0.5%.
Amongst BYPL operational highlights are the
following facts:
• Only discom in Delhi to have a 100%
electrified area.
• Successfully met the maximum power
demand in Summer 2012 of 1461MW - close
to 50% increase over the maximum power
demand of 798MW in 2002-03.
• Consistently operates its distribution network
with a class leading reliability of 99.84%
(March2011)asperCEAnorms.
• In the last ten years, customer base increased
from 7 lakh customers in 2002 to 12.5lakh
customers in 2012.
SN Particular Unit BYPL
(East &
Central)
1 Area sq. km 200
2 Customer Cons / 6139
Density (As of Mar’12) sq km
3 Total Registered Customer Million 1.23
(As of Mar’12)
4 Peak Demand (Delhi peak MW 1461
demand 5642 MW)
• Deploys Supervisory Control and Data
Acquisition (SCADA), Geographic Information
System (GIS), Automated Meter Reading
(AMR) technologies for faster identification -
isolation and restoration of faults.

2. Introduction
BSES Yamuna Power Limited(BYPL), like power
companies all over the world is actively looking at
solutions to future proof the distribution network
and make them ready for integration with smart
grid transmission networks.
As the only discom to have a 100% electrified
area, we understand the importance of optimizing
power distribution network. Strengthening and
monitoring 11KV networks, we realize is the key to
reduction of AT&C losses and ensuring power for
all.
Technology aids BYPL in managing material and
manpower to monitor its network. BYPL now offers
its expertise in the form of Modular Integrated
Distribution Automation System (MIDAS) - the
value-for-money solution in automation of
11KV/415Vdistributionnetwork.
MIDAS is the result of our in-house pool of
Engineers work to find solutions for predictive
maintenance of networks, which allows for
substantial reduction in maintenance costs while
increasing reliability and quality of power supply.
MIDAS allows for remote monitoring of the health
of 11 KV network equipments, quick location of
faults and even predicts faults prior to their
occurrence. MIDAS is capable of sending auto
alerts via sms. It is a cost effective, easy to use and
implement solution to efficiently manage 11KV
distribution grids with minimum service
disruptions.
2. Distribution Transformer Unit (DT): Conveys
input received from LT Palm Temperature Sensor
(connected to R,Y,B line of DT, Oil Temperature
sensor, Oil Level Sensor, Door
Sensor) and sends it to the
F R T U u s i n g R S - 4 8 5
communication.
3. RMU (Ring Main Unit): Monitors input from
Isolator, Breaker, FPI, CBCT (neutral current),
SF6 Gas pressure of RMU and sends it to the
FRTU using RS-485 communication
4. Fault Passage Indicator (FPI):
Provides visual or remote
indication of a fault on the
electric power system.
6. Communication medium: Modem, General
Packet Radio Service (GPRS)
7. Front end web base application: Provides real
time status of different substations and their
corresponding parameters (sensors and meter
data).
FRTU Specifications
To cater to ever increasing power demand, power
distribution companies need to look at capacity
augmentation and optimisation of their power
distribution networks to eliminate bottlenecks.
MIDAS has been specifically designed and
developed to work at the 11KV/415V distribution
substation level. So far similar SMART
applications have been implemented only at
66KV grid level.
On an average, rectifying distribution transformer
downtime takes upto 24 hours. However,
substations with predictive fault, conditioning
monitoring system “MIDAS” in place, will be able to
reducetheirdowntimebyapproximately85-90%
Need
Components
Sensors
Door Sensor
Oil level
Temperature
Oil level Sensor
LT Palm Temperature Sensor
1. Field Remote Terminal unit (FRTU):
Indigenously developed by BYPL takes input
from DT and RMU unit (sensors data), meter
instantaneous parameters, fire sensor and
sends it to a central server on periodic basis.
5. Core Balanced Current Transformer (CBCT):
Ring type determines imbalances of
transformer.
• Power
Requirement:
Unregulated
220V+10% AC
• Case: IP54/IP55
enclosure
protection for
Indoor
Substation
• IP 66/67 enclosure protection for Out Door
Substation.
• FRTU: Embedded hardware with 32-bit
microcontroller
• FRTU has internal EPROM (Erasable
Programmable Read Only Memory)
• Communicates with server on GPRS
• RS-232/485 Interface
• Flash memory of size 4 MB
Functionalities
• Remotely monitor
• Condition of various assets such as
transformer, switchgear etc
• Energymeterdata(whichissentevery15min)
• Fault detection in the network
• Intrusion detection
• Fire detection
• Integration with SAP, GIS, OMS
S
M
OSI
G
S
AP
ENERG
Y
AUDIT
MIDAS
OMS (Outage Management Solution)
GIS (Geographic Information System)
Benefits
Features
• InbuiltSMPS(Switched-ModePowerSupply)
• Cost Effective
• 8 AI Ports
• 14 DI Ports
• 8 DO Ports
• Provision to integrate with smart meters
• Low power consumption
• Designed to work in harsh environment
Predicting fault and Condition Monitoring: With
the advantage of fault prediction discoms can
take corrective actions in time which will
translate to:
• Reduced physical theft
• Protection against fire
• Lower effort
• Reduced maintenance cost
• Reduced downtime of equipment
• Extension of equipment service life
• Improved support for operations, maintenance
andprotectionengineersand
• Provide sustainable investments to future-
proof 11KV network
For the customer, implementation of MIDAS by a
discom translates to higher reliability and
availability of power.
MIDAS Application
Home Page for authorisation and
authentication of registered users
Condition Monitoring Alarms and
Events Page for Transformers & Substations
MIDAS Application Features
qRegular Monitoring Of
• Load imbalance
• Power factor
• Overload conditions
• Load profile
• Oil level
• Oil temperature
• LT palm temperature
• Intrusion problem
q Event Notification via sms and email with
escalation
Switch Gear condition monitoring,
Fault detection giving FPI status
LT Meter data to check condition monitoring,
over loading / imbalance to reduce Technical Losses
SENSORS
FRTU
INTERNET
Client
Access
Terminals
RS
232
RS
485
Port
GPRS
Service
RMU
RMU Concentrator
Distribution
Transformer
Meter
DT Concentrator
FRTU (Field Remote Terminal unit) DT (Distribution Transformer) RMU (Ring Main Unit)
FPI (Fault Passage Indicator)GPRS (General Packet Radio Service)
MIDAS Block Diagram
Smart Substation Monitoring System
DG Set
APFC
• FPI
• Fire Alarm
• Door Sensor
• Movement
sensor
• SF6 Pressure
• Oil
Temperature
• Oil Level
• Terminal
• Temperature