communication of smart grid

8/2/2019 Communication of Smart Grid

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Communication of Smart Grid


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Why we need communication in smartgrid?

Smart Grid system is a system in whichwe have required all the data of energy

generation, transmission and utilizationof whole system .

So without communication it is notpossible for us to collect data of energygeneration, transmission and utilizationof customer.


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Highly Sensitive

Confidential Access to specified personnel


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Due to following Restrictions

Security guidelines arefundamental for:Transmission

CollectionStorage

Maintenance of energy consumption data


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Bulk GenerationUnits

Transmission

Sector(to ensure

continuity ofsupply)

DistributionSector (monitor& control

faults)

Energy Providers(central,

distributed energysource meter)

Communicationdevices(communic

ation protocolsgateways, datacollectors and

raptors)

Customerdevices(smartmeters, homeappliances)

Network operations (coordinates data and controlsignals b/w customer and utility company)


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Smart meter or appliances belongto customer can identify by aunique identity assigned to it.

Identities are assign tocomponents are secured bycryptographic techniques.


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Cryptography

Cryptography is the science of writing insecret code and is an ancient art.

AuthenticationPrivacy/confidentiality

Integrity

Non-repudiation


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Selection of Communication Network

We should select communicationnetwork on the basis of following factors

Cost effective

Support traffic prioritization

Good transmittable range

Bandwidth Power quality

Least number of repetition


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Several possible techniques

1. Bluetooth technology can be a:

Possible option for communication ofcontrol signals and to transmit energyconsumption data wirelessly to a centralbase station.

Implementation technique purposed by

B.S Koay.Design and implementation of energymeter


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2. Power Line Carrier (PLC) and BroadbandPower Line (BPL) communication:

PLC technology is highly efficient forautomation of data in smart meterapplications.

In spite of substantial overhead caused bythe large IPv6 header, this protocol can beapplied even at low PHY layer data rates.


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2- Power Line Carrier (PLC) and Broadband

Power Line (BPL) communication:

This technology, with the combination ofthe MAC algorithm can achievesatisfactory delay times and throughput.

Combination might slightly reduce theusable data transfer rate, it will not affect

the overhead at MAC layer..


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3. IP network

IP based network protocol would beanother promising option forcommunication

In smart grid communication its advantageis satisfying the security standards.

TCP/IP can also be used as a common

platform for multiple communicationdevices


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In addition to above options, Session

Initiation Protocol (SIP) is a text-basedsignaling protocol that is used forcontrolling multimedia sessions such asvideo and Voice over Internet Protocol(VoIP).

SIP can be used on:

Transmission Control Protocol (TCP)

User Datagram Protocol (UDP)

Stream Control TransmissionProtocol (SCTP)


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T. Mander et al. proposed a communicationarchitecture that uses DNP3 to produce theprotocol discontinuity between the DNP3

devices for regulated power systemoperations and TCP/IP devices for the smartload and demand management.

This discontinuity in protocols limits the

number of vulnerable attacks from otherTCP/IP devices.


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Data object security provides several rulesfor accessing the data in order to avoidunauthorized access that manipulates the

data and device operations.


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Peer-to-Peer (P2P) based network

S. Rusitschka et al. proposed an energymeter thatcommunicates using a Peer-to-Peer (P2P) based network.

A smart meter that employs P2P networkcan enhance the range of operations of theappliances.

Value added services can also beimplemented with less capabilityrequirement.


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Zigbee network

This is another important and potentialcommunication network for transfer ofdata and control signals.

Zigbee protocol can be used with Home Area Networks (HAN) for data transferover 802.11.x.

By this technique reduce the responsetime and verification delay.


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GPRS technology

GPRS technology can be a potentialcommunication medium for transferring both the data and control signalswirelessly over long distances.

A few communication characteristicsthat represent GPRS communication

network have been assessed.


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GPRS technology

Lack of tools for detection of a networkfailure would be major setback forimplementing GPRS network in manygeographical locations.

Before deploying a GPRS basedcommunication system in a specific

location, availability and quality of thesignal has to be determined.

communication of smart grid

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