Distribution Automation For Distribution Automation For T Thiruvananthapuram City hiruvananthapuram City

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Distribution Automation For
Distribution Automation For
T
T
hiruvananthapuram City
hiruvananthapuram City
Latha
Latha
B.
B.
Kaimal
Kaimal
, Joint Director
, Joint Director
R. Sindhu, Joint Director
R. Sindhu, Joint Director
Titus A.
Titus A.
Chazhoor
Chazhoor
, Joint Director
, Joint Director
Presenter
Presenter
-
-
Sudeep Balan,
Sudeep Balan,
Senior Scientific Officer,
Senior Scientific Officer,
Control and Instrumentation Group
Control and Instrumentation Group
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
2
What is DA ?
What is DA ?

Distribution Automation is defined as an
integrated system concept for the digital
automation of distribution substation,
feeder and user functions.

IEEE Definition:

A system that enables an electric utility
to remotely monitor, coordinate and
operate distribution components in a
real-time mode from remote locations.
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
3
Abbrevations
Abbrevations

DA –Distribution Automation

SCA
DA

Supervisory Control and Data Acquisition System

RTU –
Remote Terminal Unit

FMU –
Feeder Monitoring Unit

MRTU –
Micro Remote Terminal Unit

RMU –
Ring Main Unit

SCS –Substation Control System

CCS –Central Control System

MMI –
Man Machine Interface

OMS –
Outage Management System

GIS –
Geographical Information Systems

DN –
Distributed Node

IVRS –
Interactive Voice Response System

TCMS –
Trouble Call Management System
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
4
Functions of DA
Functions of DA
Feeder Switching & Automatic
Sectionalizing
IS
SUBSTATION
AUTOMATION
DISTRIBUTION AUTOMATION
CUSTOMER AUTOMATION
SCADA/EMS
AM/FM/GIS
Outage Management System
Work Management System
WAN
PLCs
PC MMI
Network Interface Modules
Distribu
ted Computing for DA functions
Fault Location & Isolation:
Service
Restoration
Voltage Reduction
Distribution to customer
Communication Nodes
Radio (MAS)
Sub LAN
DA Communication Interface
Automated Meter
Reading
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
5
Function of DA System
Function of DA System

Remotely monitors the distribution
system, facilitates supervisory
control of devices and provides
decision support tools to improve
the system performance

SCADA
(Supervisory Control And Data Acquisition)

Application Functions
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
6
DA OVERALL SYSTEM CONFIGURATION
DA OVERALL SYSTEM CONFIGURATION
DN
RMU
DN
RMU
DN
POWER
HOUSE
MEDICAL
COLLEGE
S/S
POWER
HOUSE
S
/
S
CDAC
VYD
BHAVAN
DN
VELI S/S
VATTIYOORKAVU
S/S
THIRUMALA
S/S
PARUTHIPARA S/S
DN
VIZHINJAM S/S
GS
M
GSM
RMU
DN
LA COMPLEX S/S
SCS
SCS
SCS
SCS
SCS
SCS
SCS
SCS
WIRELESS LAN -4MBps
GSM
RADIO 9.600kbps
ASIANET
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
7
Objectives
Objectives

Provide total distribution information to Control
Room Engineer

Increased simplicity in 11 KV network operation

Faster fault location, isolation and service restoration

Supply reliability improvement

Reduction of losses in the system and improved
voltage profile due to feeder rearrangement

Improvement in quality of service

Improvement of equipment availability

Manpower saving in operation and maintenance

Use of technology advancement in network
management

Better tools for Short Term and Long Term
Distribution Planning
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
8
Power Transmission and Distribution Scenario
Power Transmission and Distribution Scenario
Distribution System

Substations

Transformers

Circuit Breakers

Feeders

Sectionalizing Switches

Capacitor Banks

Customers
-
HT consumer
-
LT consumers
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
9
Why DA?
Why DA?

Lack of Information to control room engineer on
loading and health status of transformers and
associated feeders

Due to absence of monitoring, overloading
occurs which results in low voltage at customer
end

Remote Control of distribution feeders not
possible from control room

Fault isolation/restoration was time-consuming

Prolonged outages and less supply reliability
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
10
Distribution Automation
Distribution Automation

Substation Control System

Distributed Nodes

Central Control Room

Benefit Evaluation
SUBSTATION CONTROL
SUBSTATION CONTROL
SYSTEM
SYSTEM
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
12
Functions of SCS
Functions of SCS

Data acquisition

Power computation

Presentation of feeder data

Communication with CCS
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
13
Unique Features of SCS
Unique Features of SCS

Non Intrusive type power interface

Transducer less Substation RTU for
monitoring electrical parameters

Savings in Cost of Transducers

Less H/W means less maintenance

Communication with CCS over
Radio/Telephone line/Asianet
Cable/GSM

User configurable Reports0
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
14
Three Wattmeter Method
Three Wattmeter Method
Vrms
= √
Σ
(VINST)2
Irms = √
Σ
(IINST)2
Total Instanteous Power = Σ(VINST X IINST)
Active Power = (Total Inst Power / 320)
Apparent Power = Vrms
x Irms
Reactive Power = √App Power 2 -
Active Power2
v
t
v
t
AC
WAVE
64
SAMPLES
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
15
200/5A CT
11KV/110 V PT
5A/2mA CT
FMU
FEEDER
LOAD
KSEB
KSEB
IR
IY
IB
VR
VY
VB
110/10.8 V
PT
CT/PT Interface
CT/PT Interface
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
16
Feeder Monitoring Unit
Feeder Monitoring Unit

Intelligent Module

14 Analog Inputs

12 bit Resolution for
Analog Inputs

Comm. Interface : RS232 &
RS485

Power Consumption : 5V
DC 1A, +
15V DC 100mA
EPROM
CPU
SRAM
RS232
Signal
Conditioner
A
D
C
RS485
A0
A1
.
.
.
A14
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
17
Salient Features of SCS
Salient Features of SCS

PC Based User-friendly operator console

Full substation SCADA Functionalities

System configuration

MMI module (Online display of
mimic,
Dial
,bar,trend, Engg. Value etc.)

Historical display (
Trend
, Alarm)

Data logging (I,V, pf, Frequency, AP, RP, CB status,
Trip Relay status etc.)

Alarm logging

Report Generation
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
18
Historical Trend
Historical Trend
Feeder Load Pattern
Feeder Load Pattern
<<BACK
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
19
DIAL
DIAL
<<BACK
DISTRIBUTED NODES
DISTRIBUTED NODES
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
21
Distributed Node
Distributed Node

Used to control the Ring
Network and the
distribution transformer

Enables faster restoration
of power supply to healthy
sections of faulty feeder

Enables easy and reliable
remote operation from
Control Room (through
MRTU)
Enclosure
11 KV Distribution
Transformer
MRTU
MRTU
RMU
RMU
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
22
MRTU
RADIO
DI/DO/AI
RELAY
MODULE
MRTU
MRTU
<<
<<
BACK
BACK
DC-DC CONVERTER
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
23
RMU
RMU
SF6 GAS
PRESSURE
INDICATION
BREAKER
SWITCH
POSITON
EARTH
SWITCH
POSITON
<<
<<
BACK
BACK
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
24
MMI Frame
MMI Frame
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
25
Switching Strategy
Switching Strategy
Fault
OPEN
OPEN
OPEN
CLOSE
OPEN
CLOSE
CLOSE
CLOSE
CLOSE
OPEN
CLOSE
CLOSE
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
26
Micro RTU Features
Micro RTU Features

8 Analog Inputs

Per-Phase Current

16 Digital Inputs

Status of Cable Switches,
Earth Switches

Status of Transformer
Trip Coil

Short circuit, Earth Fault
detection

SF6 gas pressure alarm

10 Digital Outputs

Open / Close Cable
Switches

Transformer Trip Coil

Fault Sensor Reset

Unique indigenous
Design (Processor
module + Power supply
Module)

Operates from 24VDC
Battery Supply

Easy interface to RMU

Remote Sensing of
faults (SC/EF)

Remote Operation of
Cable Switches
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
27
Communication
Communication

Radio Modem

Data rate -
9600bps

Power -
5 Watts

Frequencies used

TX 849 –
851 MHz

RX 933 -
935 MHz

Primary Power : 13.8
V DC

Challenges in Radio
communication

Terrain

Buildings

Line of sight

RSSI problems( in
bad weather
conditions)

Repeater Stations
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
28
Communication
Communication
DN
RMU
DN
RMU
DN
POWER
HOUSE
MEDICAL
COLLEGE
S/S
POWER
HOUSE
S
/
S
CDAC
VYD
BHAVAN
DN
VELI S/S
VATTIYOORKAVU
S/S
THIRUMALA
S/S
PARUTHIPARA S/S
DN
VIZHINJAM S/S
GS
M
GSM
RMU
DN
LA COMPLEX S/S
SCS
SCS
SCS
SCS
SCS
SCS
SCS
SCS
WIRELESS LAN -4MBps
GSM
RADIO 9.600kbps
ASIANET
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
29
Repeater Station
Repeater Station
Radio tower
Linux Repeater
RADIO
MO
DEM
RADIO
MODE
M
Yagi

Antenna
Omni
Antenna
Central Control System (CCS)
Central Control System (CCS)
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
31
Central Control Computer System
Central Control Computer System
PRIMARY
SERVER
SECONDARY
SERVER
RAID
ETHER SWITCH
ETHER SWITCH
CONSOLE 1
CONSOLE 2
COMM
SERVER
PLOTTER
MASTER RADIO
OMNI ANTENNA
LASER
PRINTER
DAT
UPS
CONSOLE 3
PROJECTION
SYSTEM
DOT MATRIX
PRINTER
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
32
Central
Central
Control
Control
Room
Room
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
33
Salient Features of CCS
Salient Features of CCS

Dual Redundant Servers
in
hot standby configuration

Client/Server Communication
Software Modules

Power SCADA software

Man Machine Interface
Modules

Data/Alarm Logging/display
and Report Modules

11 KV Distribution Network
monitoring and Control
(Remote Operation of RMUs)

Feeder Reconfiguration

Geographical Information
System (
) package

System (OMS) -
Switching
and Fault Reports
packages

Web based report
configuration/ generation
of Substation feeder data

Communication with
Substations / Repeater
Stations/ Distributed nodes
over Radio/ Asianet Cable/
Wireless LAN/ GSM
GIS
Outage Management
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
34
Geographical Information System
Geographical Information System
<<
<<
BACK
BACK
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
35
Outage Management Report
Outage Management Report
<<
<<
BACK
BACK
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
36
Trouble Call Management System (TCMS)
Trouble Call Management System (TCMS)

Centralized complaint registration for 21 Section
Offices

Customer database of 21 Sections

Complaint registration through

Operator (Tel. No.1912)

IVRS

SMS

Complaint despatch to Mobile Squads for rectification

System commissioned at Call Centre, Power House
and in operation since January 2004.

System Commissioned at
Thiruvananthapuram
,
Kollam ,Kochi and Calicut
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
37
Trouble Call Management System (TCMS)
Trouble Call Management System (TCMS)
<<
<<
BACK
BACK
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
38
TCMS
TCMS
BENEFIT EVALUATION
BENEFIT EVALUATION
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
40
System Performance Indices
System Performance Indices

SAIFI (System Average Interruption
Frequency Index)

Average number of times a customer’s supply
is interrupted in a year

SAIDI (System Average Interruption
Duration Index)

Total number of minutes, on an average, that a
customer is without electricity in a year

CAIDI (Customer Average Interruption
Duration Index)

Average duration of each interruption.( SAIDI
divided by SAIFI)
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
41
Benefit Evaluation
Benefit Evaluation
2002
2002
-
-
2003
2003
-
-
2004
2004
-
-
2005
2005
8.43
9.41
12.99
12.14
0
3
6
9
12
15
Value
2002
2003
200
4
2005
Ye
a
r
SA
IFI
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
42
Benefit Evaluation
Benefit Evaluation
2002
2002
-
-
2003
2003
-
-
2004
2004
-
-
2005
2005
759
749
963
744
0
200
400
600
800
1000
1200
Value
2002
2
003
2004
2005
Y
ear
SAI
D
I
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
43
Benefit Evaluation
Benefit Evaluation
2002
2002
-
-
2003
2003
-
-
2004
2004
-
-
2005
2005
90
80
74
61
0
20
40
60
80
100
Value
2002
2003
20
04
2005
Ye
a
r
CAIDI
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
44
Bridging Failure
Bridging Failure
150
136
118
81
0
20
40
60
80
100
120
140
160
No. of Occurence
2002
2003
20
04
2005
Year
BRIDG
ING
FAILURE
Distribution Automation For Thiruvananthapuram City
TeCDaC07
Jan. 2007 Jan. 2007
45
Thank You
Thank You