seamless integration of scada systens 3
TRANSCRIPT
Sanjay Kumar Banga
Head –Power System control & Automation
North Delhi Power Limited, INDIA
Presentation Structure Presentation Structure
• About NDPL
• NDPL- SCADA system , Application and
interfaces
• Future grids , integration issues and challenges
• Conclusion
• About NDPL
• NDPL- SCADA system , Application and
interfaces
• Future grids , integration issues and challenges
• Conclusion
2
3
NDPL - Geographic DescriptionNDPL - Geographic Description
NDPLNDPL
BSES BSES
RajdhaniRajdhani
BSES BSES
YamunaYamuna
NDMCNDMCMESMES
Joint Venture of TATA Group with Delhi Govt.Joint Venture of TATA Group with Delhi Govt.
51:4951:49%%
Initial Challenges in July 2002Initial Challenges in July 2002Initial Challenges in July 2002
Change Management -
Working environment of offices & work
culture, a key area of concern
Dilapidated Distribution Network – the
supply system on the verge of collapse- an average consumer faced 110
hours of supply interruption in a year.
Grievances on Revenue Cycle issues had crumbled without extra-ordinary interventions
� New connections pending
� Pending - 100000 complaints in files� more than 50% consumer records out of the total base of 7.43 lakhs received had some form of errors.
….. the challenges on take over were huge but consumer patience very little
INITIATIVES had to be taken that would deliver results quickly.
NDPL Profile:NDPL Profile:
5
As on date
Rs. 2,759 Cr (FY 0910)
1,313 MW (Jul’10)
6,911 MU
1.21 Million
3,950
510 Sq Kms
4.8 Million
1,439
2,372
0.57
08% / 06%
As on Jul’2002
Rs. 1,095 Cr
850 MW
5,237 MU
0.8 Million
5,400
510 Sq Kms
4.2 Million
1,246
1,568
1.03
-
Particulars
Turnover
Peak Load
Energy Requirement
Total Registered Consumers
Number of Employees
Area of Distribution
Population Serviced (approx)
Per Capita Consumption (Units)
No of Consumers / Sq km
Employees / MU input
Load / Energy Growth
Strategic Roadmap: Strategic Roadmap:
WHAT NDPL INHERITED WHAT NDPL INHERITED –– JULY 2002JULY 2002
AT&C LossesAT&C Losses
> 53%> 53%
No concept ofNo concept of
consumer service consumer service
& IT Interface& IT Interface
Electricity Supply Electricity Supply
SystemSystem on the on the
verge of collapseverge of collapse
Lack of Lack of
Performance Performance
OrientationOrientation
STRATEGY FOR THE 1STRATEGY FOR THE 1STST CONTROL PERIOD (2002 CONTROL PERIOD (2002 –– 2007)2007)
AT&C Losses AT&C Losses
<25%<25%
Consumer service Consumer service
& IT Interface& IT Interface to be to be
comparable with comparable with
World StandardsWorld Standards
System ReliabilitySystem Reliability
to to be comparable be comparable
with Best Utilities in with Best Utilities in
India. India.
Performance Performance
OrientationOrientation through through
Change Change
ManagementManagement
��50%50%
1,00,000 1,00,000
Backlog Backlog
ComplaintsComplaints
No Planned No Planned
CAPEX & OPEX CAPEX & OPEX
in Past 3 Yrsin Past 3 Yrs
5,400 Staff 5,400 Staff
(Unfavorable (Unfavorable
Working Condition)Working Condition)
6
Automation Technology RoadmapAutomation Technology Roadmap
C O M M
N E T W O R K
50 OFFICES
TRANSCO GRID
STN (9)
DIST SUB STN
(5000 plus)
CUSTOMERS
(1 Mn Plus)
NDPL
GRID STN (54)
D I SASTER
RECOVERY
WEB
DA
EMS
DMS
OMS
SCADA
CRM
Billing
SAP
GIS
Call Centre
AMR
A way forward for smart grid….
Automation Excellence….
• All grid substation Panels and relays are old and non communicable type .
•All grid substations are manned and operation was carried out at local level.
• All Meters are manually read .
•Lack of centralized monitoring of distribution network
•Unavailability of system parameters across NDPL
•Unavailability of dedicated communication network for NDPL requirement.
•Sub Station Automation
•Automatic meter reading of key consumers .
•Commissioning of NDPL’S own fiber
communication infrastructure
•
• Remote monitoring & Controlling By SCADA Syst
•BCC for disaster Mitigation Plan .
•Energy auditing from SCADA.m
•DMS Syste
•Distribution Automation
•OMS
AUTOMATION ROADMAP
NDPL –SCADA - DMS NDPL NDPL ––SCADA SCADA -- DMS DMS
• SCADA : • Control & Monitoring of all grid stations
• Grid stations are Unmanned
• Manual & Automatic Load shedding on predefined time from SCADA
• ABT interfaced with load forecasting and Load
shedding
• Energy Audit
• Operation Monitoring
• EMS Applications :
• state Estimator
• Contingency analysis
• DMS Applications :• Basic trace • Fault isolation & Service restoration • Switching procedure management • Jumper ground & Cuts , VVC • Quality Indices
NDPL –Sub transmission Network NDPL –Sub transmission Network
Load SheddingLoad Shedding
8/18/2011 11
Objective :
To avoid system overloading
Key Features:
�Manual Load Shedding
�Under frequency
�Transformer Overload
�Tie Line Overload
Benefits:
�Maintenance of Grid Stability
� Revenue optimization in theft prone areas
�Optimized system overloading
�Reduction in MU losses
Under frequency load shedding Under frequency load shedding
Indicate the
day & time
for which
UFR is
scheduled
Freq. levels
availables
Short Term Load Forecasting (STLF)Short Term Load Forecasting (STLF)
8/18/201113
Objective :
To optimize load prediction for power procurment
Key Features:
�Short Term Load Forecast
�Very Short Term (Tracking) Load Forecast
�Manual Load Forecast
�Forecasts involve weather data as well
Benefits:
�Reduction in Power Purchase Costs
�Allows working within narrow margins
�Optimization of demand schedule
�Inputs for network planning
Availability Based Tariff (ABT)Availability Based Tariff (ABT)
8/18/2011 14
Objective :
To optimize power purchase cost
Key Features:
�FTP scheduled drawl from NDPL machine
�Importing Scheduled drawl data into ABT application
�DUI – Daily Unscheduled Interchange Report
�WUI – Weekly Unscheduled Interchange Report
�MUI – Monthly Unscheduled Interchange Report
�YUI – Yearly Unscheduled Interchange Report
Benefits:
�Reduction in Power Purchase Costs
�Improving upon margins
�Optimum utilization of sanctioned power
G I S , O M S ,
C y m e d i s t
( B y N D P L )
C o p y o f I S & RW e b c o n s o l e s
( B y N D P L )
E n t e r p r i s e W A N( b y N D P L )
S C A D A A p p l i c a t i o n s
D A C
C o n s o l e s )
E M S / D M S L A N
M C C
P o w e r S y s t e mS i m u l a t o r
P r i n t e r s
C o n t r o l S y s t e mS i m u l a t o r
C o n s o l e s
O T S L A N
O T S
T o D C U /
R T U s
V i d e o
p r o je c t o r( O p t i o n )
C N P ( T o t h eC C W A N v i a
t h e f i r e w a l l )
( O p t i o n )
S C A D A
P r i n t e r s
A p p l i c a t i o n s
C o n s o l e s
D a t a A c q
I n t e r f a c e
E M S / D M S L A N
T o D C U /R T U s
V i d e op r o je c t o r
C N P ( T o t h eC C W A N v i a
t h e f i r e w a l l )
( O p t i o n )
M u l t i - p o r tr o u t e r s
U I L A N
P r i n t e r s
P D S P r o c e s s o r
D a t a A c qI n t e r f a c e
C o n s o l e s
P D S L A N
C N P ( T o t h e
C C W A N v i a t h e f i r e w a l l )
( O p t i o n )
P D S
T o D C U / R T U s
C o r p o r a t e N e t w o r k
B C C
P r i n t e r s
R o u t e r
O t h e r u t i l i t i e s
C C W A N
( O p t i o n )
F i r e w a l l s
O t h e r
s e r v i c e s
I S & RI S & R
Architecture Architecture
DSIDC1
NARELA
RG-3 SUB RING - 1
Σ2
2
2 2
2
2
Σ
Σ
RG-5
PUSA
ROAD
RANIBAGH
GRID
Saraswati
garden
NARAYANA PH-
I
CORE RING
FIBER RING - NDPLFIBER RING - NDPL
RANIBAGH CCC
NEW ROHTAK ROAD
Σ
Σ
Σ
Σ
Σ
Σ
Σ Σ
Σ
Σ
ΣΣ
Σ
Σ
Σ
Σ
Σ
Σ
Σ
Σ
Σ
Σ
Σ
2
Σ
Σ
2
Σ
Σ
Σ
Σ
Σ
WZP-II
INDER VIHAR
AZAD PUR
WAZIRABAD
CIVIL LINES
SARASWATI GARDEN
PANDU NAGAR
VSNL
S PARK
KESHAV
PURAM DO
ROHTAK ROAD
RAM PURA
TRI NAGAR
ASHOK
VIHAR H
BLOCK CCC
GULABI BAGH SHEHJADA BAGH
SHAKTI NAGAR DO
GTK Grid
SHALIMAR
BAGH
PITAM PURA DO
PP III
PP II
MGP-II
INDER PURIHUDSON LINES
WZP-I
ASHOK VIHAR GRID
MGP-1
Σ2
RG-IVRG-22
RG-23
BAWANA
GRID-6
POOTH
KHURD
GRID
BAWANA
WATER
WORKS and
Bawana DO
DSIDC A7,
NARELA
DSIDC1
NARELA
RG-1
PP-1
HDR’PUR
SGTN
JAHANGIR
PURI
AIR
KHAMPUR
BADLI
RG-6
RG-II
Fiber Sub Ring
Fiber Main Ring
Σ Grids
2 Enterprise DATA Σ2 Enterprise and Grid
VSNLVSNL Gateway
for internet
RAMA ROAD
Σ
Σ2
Σ2
Σ2
Σ2
Σ2
2NARELA DO
DSIDC2
NARELA
STM 16
STM 4
STM 4
STM 4
STM 4
STM 4
SUB Ring 3
SUB Ring 2
SUB Ring 4
SUB Ring 5
Very Robust backbone
Typical 66/33/11 KV sub station architectureTypical 66/33/11 KV sub station architecture
IEC 60870-5-104
Typical System configuration
I/OsI/Os I/Os
UTP cable
UTP cable
D25 BCU
D25 BCU
D25 BCU
D20 Data concentrator
Communication N/W
MCC
BCUs for 66-33 kV I/C
BCUs for 66/33/11 kV Transformer Feeder
BCUs for 33 kV Bus Coupler
IEC 60870-5-104IEC 60870-5-104
Argus Protection relays on 66/33kV
Incomer, Transformer. Feeder, Bus-Coupler,
Outgoing & Capacitor Banks
RTU Maint. PortEthernet Switch
Multi function Transducer (Modbus)
Transformer Monitoring
Units
IEC 60870-5-104
Fiber Optic Cable
IEC-60870-5-103Sigma-1
RS-232, Copper
IEC-60870-5-103
BCC
Protocol – Modbus RTU (Sepam Relays) or SPA (ABB Relays)
Sigma-3
Substations components ….Substations components Substations components ……..
� Integration of Different IEDS/Relays
� Modbus Devices
� Argus Relays
� Battery Charger IED
� SPA Devices
� Average I/O Signals integrated per bay
� 33/66 kV Lines : 73
� Power Transformers : 100
� Bus Coupler & Auxiliaries : 110
� 11 kV : 20
� Equipment Health parameters available for
� 33/66 kv Breakers : Trip Counter (Normal & on Fault)
� 11 kV Breakers : Trip Counters
� OLTC Operations : No of Operations
� Remote Relay Setting Capability
25 types of IED successfu
lly integrated to SCADA
system through IEC 104
NDPL OFC Network
MCC BCC
DC DC
GPRS Network
Service providers Location
S/s
S/s S/s
S/s
S/sS/s
…GPRS Connectivity …
…2 Mbps leased lines …
Distribution Automation architectureDistribution Automation architecture
Distribution AutomationDistribution Automation
SCADA –SAP integration for Reporting
Integration of Reporting Module at Database level
Reporting
Module
(Historical & Future Database)
(SAP Reporting Module)
Report Output through BO
Few issues faced during integration
• SCADA Data structure was different and was not easily understandable at SAP
– Oracle Views were created to provide access of data in a better way
• Synching of data across 2 different systems
– Data coming from database was synchronized at regular interval to SAP System
• Taking care of huge amount of data being generated at SCADA side
– Data for only last 90 days is present at SCADA end, remaining data is archived at SAP end thereby utilizing its potential of warehousing data
• Accessibility of SAP reports
– Usage of Common repository of making reports available online onour intranet portal
SCADA-SAP Integration Benefits
• Energy audit for Sub transmission system
– The reports from SCADA System became easily
accessible using this interface to every one
• Network Planning
– Peak feeder data and transformer data is used for system improvement and yearly CAPEX planning .
• SCADA performance reports
SCADA –Knowledge Management (KM)portal
Purpose
� Real Time SCADA information across NDPL
� joint monitoring in initial stage to avoid
overloading
� Network Updation
Corporate NetworkSCADA Network
SCADA-Knowledge management Integration
SCAD
A
System
Knowledge
Management
System
Firewall
Reports
How it to works
• SCADA Data is polled every 3 minutes.
• A text file is created and pushed on to the FTP Server.
• A dot net based application has been developed which pulls data from the FTP server.
• The data is then displayed in the relevant format at
NDPL knowledge management portal Sanchay
• Whole data is refreshed every 3 minutes
Data Flow
SCADA Real Time
Database.Data is polled every 3 minutes
Application runs on NDPL
Knowledge Management Portal.
Data pushed on to an FTP server
Dot net based Application pulls
Data from FTP Server
SCADA-Knowledge Management
Feeders for each grid Values
Daily Peak Load GRID: CIVIL LINES
6.6 KV I/C-1 283.38
3-2-2010 6:00:00 PM
6.6 KV I/C-2 119.58
3-2-2010 9:45:00 AM
6.6KV CHANDRAWAL-1 120.24
3-2-2010 11:15:00 AM
6.6KV CHANDRAWAL-2 197.58
3-2-2010 8:45:00 PM
KASHMIRI GATE-1 156.00
3-3-2010 12:00:00 AM
KASHMIRI GATE-2 86.41
3-2-2010 9:45:00 AM
SABZI MANDI-1 0.00
3-3-2010 12:00:00 AM
20/25MVA, TR-1 109.40
3-2-2010 9:45:00 AM
20/25MVA, TR-2 82.30
3-2-2010 9:30:00 PM
5 MVA, TR-1 58.04
3-2-2010 4:45:00 PM
5 MVA, TR-2 25.02
3-2-2010 9:45:00 AM
ACDB Bus-2 0.00
3-3-2010 12:00:00 AM
ACDB Buscoupler 0.00
3-3-2010 12:00:00 AM
BUS COUPLER 1 104.75
3-2-2010 10:00:00 AM
BUS COUPLER 2 0.00
3-3-2010 12:00:00 AM
CAPACITOR BANK 0.00
3-3-2010 12:00:00 AM
DIFR CKT. 0.00
3-3-2010 12:00:00 AM
GOPALPUR CKT-1 0.00
3-3-2010 12:00:00 AM
GOPALPUR CKT-2 0.00
SCADA on NDPL Knowledge Portal SCADA on NDPL Knowledge Portal
Online SCADA data and logs are accessible throughout NDPL.
Future Grid….. Different from Past
32
Characteristic Today Tomorrow
Enables Consumer
Participation
Little price visibility, time-
of-use pricing rare, few
choices
Full price info, choose
from many plans, prices
and options, buy and sell
Accommodates
Generation/Storage
Dominated by central
generation. Little DG, DR,
storage or renewables
Many “plug and play”
distributed energy
resources complement
central generation
Enables New Markets
Limited wholesale
markets, not well
integrated
Mature, well-integrated
wholesale markets,
growth of new electricity
markets
Meets PQ NeedsFocus on outages not
power quality
P,Q a priority with a
variety of quality/price
options according to
needs
The Smart grid Gap
338/18/2011
Characteristic Today Tomorrow
Optimizes Assets &
Operates Efficiently
Little integration with
asset management
Deep integration of
grid intelligence with
asset management
software
Self Heals
Protects assets
following disruption
(e.g. trip relay)
Prevents disruptions,
minimizes impact,
restores rapidly
THE SMART GRID GAP
348/18/2011
35
SMART GRID ARCHITECTURE FOR DISTRIBUTION UTILITY SMART GRID ARCHITECTURE FOR DISTRIBUTION UTILITY
IEC Smart Grid Standardization Road Map 2010
36
Integration requirement
• Grid integration : where the enterprise interacts with devices using standards defined by the IEC, IEEE and ANSI, where a variety of
private and public networks can be leveraged as transports.
• Process-centric application integration : where enterprise or control
center applications are integrated through a service-oriented architecture (SOA). This may involve services, messaging between
processes, short running workflows or the more complex
• Database-centric application integration : where information exchanges
between databases are driven through the use of Extract Transform Load mechanisms
• Web integration : where users and organizations collaborate using
Web-based technologies over the internet, intranet or virtual private
network. 38
Conventional integration Architecture: Extensions
become more expensive over time
• PRICE PER REQUIREMENT VS. TIME
cost
/ re
quirem
ent
time
Architecture 1.0 Architecture 2.0 Architecture 3.0
Architecture X.0
Page 40 Aug-11
Smart substation automation
Field Device integration : IEC -61850Field Device integration : IEC -61850
What’s necessary?
� Standard intelligent process interfaces (Process bus IEC 61850)
� Standard communication and processes inside
the station and among stations (horizontal and vertical integration)
� Digital system, online information, and intelligent
applications
� Digital protection devices and components for online network analyses
Complex, personal
intensive engineering and
operating
From To
To be harmonized with CIMIEC 61970*
Vendor-independent device integration via IEC 61850 process bus
Substation automation: IEC 61850 configurationSubstation automation: IEC 61850 configuration
IEC 61850IEC 61850
IEC 61850 (Ethernet)
Protection & Control
Firewall
Router
Digital instrument transformer data via IEC61850-9-2
Merging
unit
IED IED
Communication to
other substatons*
*in standardizationwork
x
Circuit
breaker
controller
CBC
IEC61850 station bus
IEC61850 process bus
CT
VT
Control center
SCADA integration ….. Getting standardizedSCADA integration ….. Getting standardized
• Substation Automation – IEC 61850 - Making life easier
• Communication Infrastructure
• SCADA/EMS/DMS control center Application
– Integration with Business components.
» Service oriented Architecture
» Common information model (CIM)
– Decoupling SCADA and DMS-OMS
Conventional network control systems are difficult to integrate because they do not use uniform data standards. Network control systems with a standardized data format for source data , based on the standardized Common Information Model (CIM), in accordance with IEC61970, offer the best basis for IT integration
Conventional network control systems are difficult to integrate because they do not use uniform data standards. Network control systems with a standardized data format for source data , based on the standardized Common Information Model (CIM), in accordance with IEC61970, offer the best basis for IT integration
Common information model
43
Common information Model :
• the CIM allow application software to exchange information about the
configuration and status of an electrical network.
• The IEC 61970-301 standard defines the core packages of the CIM, with
focus on the needs of electricity transmission, where related applications
include energy management systems (EMS), supervisory control and data
acquisition (SCADA), planning and optimization.
• The IEC 61970-501 and 61970-452 standards define an XML format for
network model exchanges using referred to as CIM XML.
• The IEC 61968 series of standards extend the CIM to meet the needs of
electrical distribution, where related applications include distribution
management system, outage management systems, planning, metering,
work management, geographic information systems, asset management and
customer information systems. 44
SOA is based on the notion that the real world is
heterogeneous!
• SERVICE ORIENTED ARCHITECTURE
• Many legacy applications
• There is no way to start
from scratch
• Highly heterogeneous
• Long lifetime of business
data and content
• Bottlenecks are “suicide”
• Perfectionism is to
expensive
Reality of large IT
systems
• Scalability: The
amount of data used
by the system will
grow
• Flexibility: The
business processes
keep changing
• Fault tolerance:
Individual components
might fail, the overall
system may not
Requirements
• Service: business
functionality with
message based
interface
• High interoperability:
accept different
languages, platforms,
middlewares
• Loose coupling:
Simplify interaction
SOA principles
SOA : Preferred Solution for SCADA - Enterprise
application integrations
• The Business processes of utilities are changing. That means that the IT systems supporting those
processes must be adapted more often; the valuable business data has to be protected.
• In order to simplify operational processes there is an
increasing need for integration between different IT
systems, like EMS, ERP, GIS, etc. Due to the fact, that those applications have different upgrade and migration cycles, this integration has to be designed in a stable and maintainable way.
• The Business processes of utilities are changing. That means that the IT systems supporting those
processes must be adapted more often; the valuable business data has to be protected.
• In order to simplify operational processes there is an
increasing need for integration between different IT
systems, like EMS, ERP, GIS, etc. Due to the fact, that those applications have different upgrade and migration cycles, this integration has to be designed in a stable and maintainable way.
So where we are moving for
CIM and SOA provide a common concept for the
integration of technical and business processes.
The underlying IEC 61970 SOA structure allows the
flexible implementation of new applications and
make SCADA a true enterprise application as
component of Smart Energy Eco system
47
Integration challenges ….
• Smart Metering systems and processes will increase the
number of endpoints , more so , it will move them to private households. Physical security is hard to achieve
• Presence of legacy system where security has never been an important requirement.
• The majority of network connections and communications paths in Smart Grid scenario will be based on Internet-
technologies / IP-networks. This infrastructure comes along with high flexibility but also introduces a higher vulnerabilitybecause of the mal-ware (e.g.: worms, viruses)
48
Conclusion.. Few key points Conclusion.. Few key points
• When upgrading , think of standards , openness
& flexibility .
• Change management is more difficult
• Involvement of all & Internal capability building
49
Thank You