Demand Side Management

Emerging Trends

Including Smart Grid initiatives

BRPL, DELHI

BSES Delhi Discoms – A Synopsis

Reliance Infrastructure Ltd. acquired 51% stake in July

2002 in two Discoms

SN 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

NDPLNDPL

MESMES NDMCNDMC

BRPLBYPL

The customers expectations and DISCOM concerns revolve around Cost of supply, Reliability and Quality of supply and services to Consumers.

Cost of Supply

Customer Services

Reliability of Supply

Quality of Supply

Technological innovations Involve

Consumers

Supply availability and reliability can be solved by involving consumer - DSM

Smart Grid Initiatives

BSES Philosophy – Understanding DSM

It can be done by …………. Reduction of load at peak

&By shifting/ adding load When energy is surplus.

Philosophy ………..

Tuning consumer load. To ensure optimum utilization of deliverable energy.

GAP and NON availability in grid – BIG Concern

DSM is by the Consumer, for the Consumer. So, their Involvement is must.

Defining Peak……….

Under Utilization

Power Shortage

Risk Of Shortage

• Load Curve

Generation Capacity

Key Terms• Absolute peak• Relative peak

Input Growth of Delhi

Increase Generation or DSM…….. to cater increase in Incremental Peak

6.20

12.31

16.21

27.35

38.60

47.87

56.31

61.90

1.843.63

7.3810.12

11.61

19.75 18.59

23.09

0

10

20

30

40

50

60

70

2004

2005

2006

2007

2008

2009

2010

2011

Year

% V

alu

e

Increamental Peak %

Increamental Energy %

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

Demand Pattern BRPL

0

400

800

1200

1600

2000

00:0

0-00

:15

00:4

5-01

:00

01:3

0-01

:45

02:1

5-02

:30

03:0

0-03

:15

03:4

5-04

:00

04:3

0-04

:45

05:1

5-05

:30

06:0

0-06

:15

06:4

5-07

:00

07:3

0-07

:45

08:1

5-08

:30

09:0

0-09

:15

09:4

5-10

:00

10:3

0-10

:45

11:1

5-11

:30

12:0

0-12

:15

12:4

5-13

:00

13:3

0-13

:45

14:1

5-14

:30

15:0

0-15

:15

15:4

5-16

:00

16:3

0-16

:45

17:1

5-17

:30

18:0

0-18

:15

18:4

5-19

:00

19:3

0-19

:45

20:1

5-20

:30

21:0

0-21

:15

21:4

5-22

:00

22:3

0-22

:45

23:1

5-23

:30

Time of Day

Dem

and

(M

W)

Typical Summer Day

Typical Winter Day

Typical Day in April

Month Peak Non Peak

% of Non-Peak

April 1268 807 64Jun- Summer 1691 1196 71Jan- Winter 1458 655 45

Peak

Peak

Peak

Typical BRPL Peak curve

So there is a need to flatten the load curve

Need of Hour

DSM methods …….

Energy Conservation Demand Shift Consumer Load Control Energy Source shift Input control

Factor need Considerations: Impact during lean period Cost of Investment and ROI Ensuring consumer involvement

Additional generation is not DSM

DSM Emerging Trends

DSM Initiatives – Emerging Trends

BRPL Green Club in line with DSM philosophy for consumers

Awareness• Consumer display• Google Power meter• ESCO Services

Technology• Smart Grid • Role of voltage• Technical loss reduction• Energy storage

Energy Conservation• ESCO services• Alternate fuel• Efficient product• Tariff

Load control• Demand response• Legislation about efficiency• Tariff• Green Club

FewKey initiatives

DSM Key Initiatives

Awareness• Consumer display• Google Power meter

Technology Role of voltage

Energy Conservation• Technical loss reduction• Legislation about efficiency

Load control• Demand response• Green Club

Energy conservation, Tariff & storage are basic steps

Smart Grid Facilitate

DSM

Consumer AwarenessAwareness

• The basic need for DSM

• Awareness about need of DSM

• Awareness about own consumption pattern

Trend

• Involvement of society – initiation by Regulator

• Portable/ web base display about pattern

• In Britain – legislation about meter with display

Methodology

• Awareness program arrange by NGO/ Universities.

• cost of awareness – highly subsidized by Govt.

In 2007, CFL promotion was highly successful. Still RWA demand for it

BRPL, Reliance Group company installed Google meters for trial.

Consumer can log onto Power Meter

Gmail ID and password is required

Cpower a leading display company, claims 15%

Consumption reduction

Customer Interactive Display – Google Power Meter

Real Time energy flow Weekly energy consumption

Smart Grid technology promotes consumer involvement through data sharing

Demand response (load response) is “reduction of electricity use by end-use customers in response to power grid needs, economic signals 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

Demand Response

BRPL DR Program

Facilitator to coordinate DR

• Capacity 25 MW

• Availability …… 100 Hrs/ year

• Typical cost 4.75Rs/ KWh .

• Only for volunteers

• incentive for consumers.

• Response time .. 30 Mins

Why becoming popular

It is a virtual generation system – Most environment friendly.

100% contribute when network is on stress. A true peak curtailing mechanism

Leads towards energy Conservation. Consumer become knowledgeable as how to reduce consumption.

Totally Volunteers based

Demand Response

Demand response cannot be compared with load shedding

DR helps in reducing peak technical loss

DR need policy support

Can DR Negawatt can be compared with renewable energy = DR obligation

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

Green Club – Demand Response extension

Once Smart Grids are installed – easy to carry Green club

Green Club – Demand Response Extension

Man less pump station at DJBor Railway can be both operate and Control through the device

Application – Non essential load Pumping motors Gallery lights Advertisement lights. Air conditioners. ( few places).

Applications - Man less load Communication tower Man less pumping stations – Railway, DJB

Communication towers load can be switched Off during need asthey have inverter

It can be programmed so as during need – one cannot switch ON the identified load

Charging of battery can also be stopped using these device

Load can also be limited

Over riding facility

Alarm facility

Control of battery charging is an other application

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

Legislation about efficiency

Stand by load consumes substantial power

Efficiency

Minimum efficiency

level to be defined e.g.

Standby mode 2 W

Parameters

Associated parameters

to be controlled e.g.

PF of CFL 0.85

Review

Technology those can

be called as luxury –

Neon v/s LED

Technical loss

It is un-avoidable but can be curtailed

Has maximum impact during peak load

Consumer load type also affect the technical loss

Technical loss Reduction

If In India Avg Technical loss is 10% - what about at peak ??

Consumer load

Load type affects

the technical loss

Typical load

• Power Pf

• Unbalance - traction

• High harmonics

Review

• To control typical load

• Investment – renewable

v/s technical loss

Principal

Typical consumer voltage

220 ~ 230V.

The allowable tolerance –

+/- 6%

Wattage consumption

depends upon voltage

DSM Emerging trend - Voltage control

By controlling instantaneous voltage – consumption in MW

can be controlled

Principal

Check consumer voltage at

tail end - online

Compare with allowable

range

Remotely manage tap

position to control voltage

Voltage control – Use of smart grid

Typical thumb rule – 1% V effects 1.3% power consumption

DSM need support in terms of

Policy

Technology

Involvement of consumers

Finance

Key question is investment in generation or in DSM

Smart Grid Facilitates DSM

Contact detail:

. Rajesh Bansal 91-11-39999425, Mobile - 9350261602 Email: rajesh.m.bansal@relianceada.com

Thank You

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