Transcript Slide 1

Demand Side Management
Emerging Trends
Including Smart Grid initiatives
BRPL, DELHI
BSES Delhi Discoms – A Synopsis
NDPL
BYPL
BRPL
NDMC
MES
SN
Reliance Infrastructure Ltd.
acquired 51% stake in July
2002 in two Discoms
Particulars
Unit
BSES Delhi Discoms
1
Area
sq. km
750
2
Total Registered Customers
million
1.72
3
Peak Demand
MW
2068
4
Consumption per year
MU
10,500
5
Employees ( Regular)
Nos.
4000
6
Customer Density
Cons/sq km
2,300
7
Turn Over
Rs. Crs.
6700
The customers expectations and DISCOM concerns revolve
around Cost of supply, Reliability and Quality of supply and
services to Consumers.
Cost of
Supply
Reliability
Customer
Smart
Grid
Initiatives
of Supply
Services
Quality
of Supply
Technological innovations
Involve
Consumers
Supply availability and reliability can be solved by involving consumer DSM
BSES Philosophy – Understanding DSM
Philosophy ………..
Tuning consumer load.
To ensure optimum utilization
of deliverable energy.
It can be done by ………….
Reduction of load at peak
&
By shifting/ adding load
When energy is surplus.
DSM is by the Consumer, for the Consumer.
So, their Involvement is must.
GAP and NON availability in grid – BIG Concern
Defining Peak……….
Power Shortage
Generation Capacity
Risk Of Shortage
•
Load Curve
Under Utilization
Key Terms
• Absolute peak
• Relative peak
Input Growth of Delhi
70
Increamental Peak %
Increamental Energy %
61.90
60
56.31
47.87
38.60
40
27.35
30
16.21
12.31
10
18.59
2010
20
19.75
2009
23.09
6.20
1.84
10.12
11.61
7.38
3.63
Increase Generation or DSM……..
to cater increase in Incremental Peak
2011
Year
2008
2007
2006
2005
0
2004
% Value
50
What are the Concerns

The peak demand is growing every year…….. This means more
PPA and power purchase tie up

Ratio of peak demand and energy consumption is not moving in
favorable direction……….. More energy available for sale during
non peak

RPO …… Such PPA may not help in meeting peak demand

The average cost of electricity is going up, as shortage during peak
and surplus during non peak

Peak and non peak affecting electricity quality

Not able to amend long term PPA
Time of Day
Month
April
Jun- Summer
Jan- Winter
0
23:15-23:30
22:30-22:45
Typical Summer Day
21:45-22:00
21:00-21:15
1200
19:30-19:45
18:00-18:15
Peak
1268
1691
1458
Non
Peak
807
1196
655
20:15-20:30
800
% of
NonPeak
64
71
45
18:45-19:00
Typical Day in April
17:15-17:30
16:30-16:45
15:45-16:00
400
15:00-15:15
Typical Winter Day
14:15-14:30
13:30-13:45
12:45-13:00
12:00-12:15
11:15-11:30
10:30-10:45
09:45-10:00
1600
09:00-09:15
08:15-08:30
07:30-07:45
06:45-07:00
06:00-06:15
05:15-05:30
04:30-04:45
03:45-04:00
03:00-03:15
02:15-02:30
01:30-01:45
00:45-01:00
00:00-00:15
Demand (MW)
Typical BRPL Peak curve
Demand Pattern BRPL
2000
Peak
Peak
Peak
Need of Hour
So there is a need to flatten the load curve
DSM methods …….





Energy Conservation
Demand Shift
Consumer Load Control
Energy Source shift
Input control
Additional generation
is not DSM
Factor need Considerations:
 Impact during lean period
 Cost of Investment and ROI
 Ensuring consumer involvement
DSM Initiatives – Emerging Trends
Load control
Awareness
• Demand response
• Legislation about efficiency
• Tariff
• Green Club
• Consumer display
• Google Power meter
• ESCO Services
DSM Emerging
Trends
Energy Conservation
Technology
• ESCO services
• Alternate fuel
• Efficient product
• Tariff
• Smart Grid
• Role of voltage
• Technical loss reduction
• Energy storage
BRPL Green Club in line with DSM philosophy for consumers
DSM Key Initiatives
Load control
Awareness
• Demand response
• Green Club
• Consumer display
• Google Power meter
Smart Grid
Few
Facilitate
Key initiatives
DSM
Energy Conservation
• Technical loss reduction
• Legislation about
efficiency
Technology
Role of voltage
Energy conservation, Tariff & storage are basic steps
Consumer Awareness
Awareness
• The basic need for DSM
• Awareness about need of DSM
• Awareness about own consumption pattern
Trend
Cpower a leading display
company,
claims
15%
• Involvement of society
– initiation
by Regulator
Consumption reduction
• Portable/ web base display about pattern
• In Britain – legislation about meter with display
Consumer can log onto
Power Meter
Gmail ID and password
is required
Methodology
• Awareness program arrange by NGO/
Universities.
• cost of awareness – highly subsidized by
Govt.
BRPL, Reliance Group
company installed Google
meters for trial.
In 2007, CFL promotion was highly successful. Still
RWA demand for it
Customer Interactive Display – Google
Power Meter
Real Time energy flow
Weekly energy consumption
Smart Grid technology promotes consumer
involvement through data sharing
Demand Response
 Demand response (load response)
is “reduction of electricity use by
BRPL DR Program
end-use customers in response to
power grid needs, economic signals
Facilitator to coordinate DR
from a competitive wholesale
market or special retail rates”
 Provide opportunities for end-use
customers to realize value for
reduction in demand
 Demand response can compete
equally with generation markets
•
Capacity 25 MW
•
Availability …… 100 Hrs/ year
•
Typical cost 4.75Rs/ KWh .
•
Only for volunteers
•
incentive for consumers.
•
Response time .. 30 Mins
Demand Response
 Why becoming popular
 It is a virtual generation
system – Most environment
friendly.
Demand response cannot be
compared with load shedding
 100% contribute when network
is on stress. A true peak
curtailing mechanism
DR helps in reducing peak
technical loss

DR need policy support

Leads towards energy
Conservation. Consumer become
knowledgeable as how to reduce
consumption.
Totally Volunteers based
Can DR Negawatt can be
compared with renewable energy =
DR obligation
Green Club – Demand Response extension
 Green Club
 A retrofit devise to control load
remotely or based on logic
 Only for volunteers – for
medium load consumers
 Disconnection of non essential
loads – on demand
Once Smart Grids are installed – easy to carry
Green club
Green Club – Demand Response Extension
Application – Non essential load




Pumping motors
Gallery lights
Advertisement lights.
Air conditioners. ( few places).
 Charging of battery can also
be stopped using these device

Load can also be limited
Applications - Man less load

Over riding facility



Alarm facility
Communication tower
Man less pumping stations – Railway, DJB
It can be programmed so as during need – one cannot switch
ON the identified load
Communication towers load can be
switched Off during need as
they have inverter
Man less pump station at DJB
or Railway can be both operate
and Control through the device
Control of battery charging is an other application
Legislation about efficiency
 Following load need review
 Non efficient – Alternate efficient load are available
 Load which impact technical loss or stress the network
 Load type critical during peak
Stand by load consumes substantial power
Efficiency
Parameters
Review
Minimum efficiency
Associated parameters
Technology those can
level to be defined e.g.
to be controlled e.g.
be called as luxury –
Standby mode 2 W
PF of CFL 0.85
Neon v/s LED
Technical loss Reduction
 Technical loss
 It is un-avoidable but can be curtailed
 Has maximum impact during peak load
 Consumer load type also affect the technical loss
If In India Avg Technical loss is 10% - what about at peak ??
Consumer load
Load type affects
the technical loss
Typical load
Review
• Power Pf
• To control typical load
• Unbalance - traction
• Investment – renewable
• High harmonics
v/s technical loss
DSM Emerging trend - Voltage control
Principal
 Typical consumer voltage
220 ~ 230V.
 The allowable tolerance –
+/- 6%
 Wattage consumption
depends upon voltage
By controlling instantaneous voltage – consumption in MW can
be controlled
Voltage control – Use of smart grid
Principal
 Check consumer voltage at
tail end - online
 Compare with allowable
range
 Remotely manage tap
position to control voltage
Typical thumb rule – 1% V effects 1.3% power
consumption
DSM need support in terms of
 Policy
 Technology
 Involvement of consumers
 Finance
Smart Grid Facilitates DSM
Key question is investment in generation or in DSM
Thank You
Contact detail:
. Rajesh Bansal
91-11-39999425, Mobile - 9350261602
Email: [email protected]
Schemes – Selection criteria

ROI on investment – DESCOM & Consumer.

For DESCOM, ROI against any investment can be possible if and only
if their is peak load reduction.

There are many schemes where consumer will have attractive ROI
but DISCOM will be in loss. (Reduction of load during non peak
hours).

Incase DISCOM has surplus energy than ROI is question mark.
Ideally energy conservation means :
Reduction in consumption but may have Slight
increase in tariff/ cost however - over all saving
to consumers. Benefit to society