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The iEMS Refresh Project
Ronan Jamieson & Graham Newton
System Operator, Wokingham
Agenda
National Grid’s iEMS
iEMS Refresh Project
System cut-over and go-live
2
Introduction to National Grid’s iEMS
What is the iEMS?
Integrated Energy Management System
SCADA system to manage NG’s transmission assets
Receive real-time data from the network (i.e. Voltage, Power, Equipment status)
Send controls to network equipment
4
“Meet licence obligations of continuously operating a safe,
secure and economic electricity network for the whole of Great Britain”
5
Key iEMS capabilities
High Availability
Dual redundant systems located in two locations, three locations capable of access
Real-time Data
Real-time data is collected from all NG electricity substations and from Scottish TOs and, some DNOs
Selected data is transferred out to other key systems
Tele command switching
The ability for engineers to re-configure the network to meet operation needs
PNA Analysis
Security, contingency and voltage analysis of the power network in real time (< 2mins) and offline studies.
Safety Management
Safety application allowing work to be safely processed and carried out on the electricity grid with extensive reporting and tracking of safety document, with clear visual indications on graphical displays
Design Philosophy
The design of the production IEMS systems uses the following principles:
Two production systems located at different sites.
Each production system is made of two independent halves, located in independent rooms.
The two production systems collect and process data independently
Database updates are performed independently on all iEMS systems
All servers are physical
This distributed nature of the architecture greatly minimises
service loss due to a single site / system failure
6
Production
system 1
Site 1
Production
system 2
Site 2
PR1 (a) PR1 (b)
PR2 (a) PR2 (b)
Data and
updates
System Security
7
IEMS Interfaces
8
IEMS
Substations
Data Archive
Scottish TOs and DNOs
ENTSO-E User
Interfaces
Balancing System
Other Key NG
Systems
System Monitoring
All elements of the IEMS refresh system will be monitored 24-hours a day 365 days a year by the following four teams:
CNI Health Team (CHT)
This team is based in DC1, monitors the IEMS hardware
Vodafone Network Monitoring Team
This team is based in DC2, monitors the IEMS network and highlights any issues to the CHT.
Security Team
This team will be investigating alerts from the IDS system
Property Team
This team will provide monitoring of power and air conditioning at the three sites (DC1, DC2, and DC3)
9
The iEMS Refresh project
Project Scope
Upgrade the existing IEMS system Software Application
Replace all existing Application hardware
Deliver a new IEMS production network in the UK at
Wokingham, Warwick and Reading, replacing all
existing IEMS network equipment.
Provide an enduring replica production system,
including network, for ongoing Testing (GE1)
11
iEMS Refresh Customer Benefits
12
Ongoing Network management
Secures our ability to manage power transmission systems 24x7 to
mid-2020s
Secure, robust and stable
Provides enhanced cyber security
Ensures required resilience and stability
Enhanced Capabilities
IEMS v17 is providing enhanced capabilities now and allowing for further future opportunities
System Quality and Testing
The Project has used a extensive test regime to ensure the delivery of a high quality product:
Multiple test phases, using a high number of experienced users
More than 2000 tests to validate the solution
Successful Failure-over testing
iEMS Synchrocheck Test – 100% Success
Real-time operational switching at Minety 400kV was performed via the R17 iEMS system
13
iEMS Timeline
14
• Site Acceptance Testing Complete
September 2017
• System Go-Live 4 November
2017
• Post Implementation support complete
December 2017
• Decommissioning complete / Project Closed
January 2017
Cut over process
Senior Management Involvement
Independent Transition forum (Recommends)
3 month/1 month /1 week/1day Go / No Go Meetings
Dress Rehearsal Sessions
Halt Periods during cut over (Roll-back plans identified)
On the day Cut Over Team (Defined roles & responsibilities over the
period)
15
MAIN = Active
DBU = Standby (no RTUs)
PR1 = n/a available
PR2 = Active
This is the preferred system
configuration determined to be
lowest risk to operations, in
anticipation of cut-over activities at
SGL-0
Required Control Systems
Configuration
16
IEMS – DBU Control Enabled
IEMS – MAIN In Control
RTDT Enabled to
DBU
SUB
IEMS – PR1 Control Disabled
IEMS – PR2 Control Disabled
RTDT Enabled to
PR1
Release 10 Release 17
Hands-off period to be agreed with
ENCC/TNCC for approximately 0-
30, whilst the Manual Entered Data
(MED) is exported from IEMS-DBU.
Co-ordination to be via PSM (and
CHT).
Failure to adhere to restriction
could result in database mismatch
or data corruption, causing delay or
abortion of system migration
activities.
On completion of MED Import PR2
is available for control
- MED dip-check
- PNA running
- Manual data catch-up and dual
dressing
Duration Est. 3 hours before hand-
over
SGL – 1day
17
IEMS – DBU Control Enabled
IEMS – MAIN In Control
RTDT Enabled to
DBU
SUB
IEMS – PR1 Control Disabled
IEMS – PR2 Control Disabled
RTDT Enabled to
PR1
Export all Manually Entered
Data [MED]: tags, hand
dressing, memo notes, etc.
Import all MED:
Gain status of dip-check
Gain status of PNA runs
Hands-off period on Rel:17 only
Manually Synchronise PR2 to PR1.
On completion establish System to
System synchronisation (SISO)
Co-ordination to be via PSM (and
CHT).
On completion of ManualSynch,
CHT confirms status of data
between PR1 /PR2
Dual dressing continues on Rel:10
and Rel:17
Duration Est. 2 hours
SGL – 0
18
IEMS – DBU Control Enabled
IEMS – MAIN In Control
SUB
IEMS – PR1 Control Disabled
IEMS – PR2 Control Disabled
Manually synchronise
database and all data
MAIN system demoted from Active
to Standby working.
PR2 taken down, configuration
changes made. To complete a
‘warm’ start is initiated.
Visibility of power system still
possible through IEMS MAIN as
Standby and possible option to
promote back to ACTIVE working
Duration Est. 30 minutes
SGL – 0
19
IEMS – DBU Control Enabled
IEMS – MAIN Control Enabled
SUB
IEMS – PR1 Control Disabled
IEMS – PR2 Control Enabled
Interfaces transfers outstanding
PR2 returns taking control of all
RTU connections. Control room
initiates dummy breaker checks.
PR2 = Active
MAIN = Standby
Dual dressing continues on Rel:10
and Rel:17
HOLD POINT x
PR1 taken down, configuration
changes made in anticipation of
system being established as
STANDBY.
Duration Est. 45 minutes
SGL – 0 (PR2 now in Control[Active])
20
IEMS – DBU Control Enabled
IEMS – MAIN Control Enabled
SUB
IEMS – PR1 Control Disabled
IEMS – PR2 Control Enabled
SGL – 0 Interface Transfers 1 of 3
21
IEMS – MAIN Control Enabled
IEMS – PR2 Control Enabled
ICCP: BM1
ICCP: EBS1
ICCP: BM2
ICCP: EBS2
Risks
All ICCP connections dual feed Rel:10 and Rel:17
Activities are to establish redundant connections to Rel:17
SGL – 0 Interface Transfers 2 of 3
22
IEMS – MAIN Control Enabled
IEMS – PR2 Control Enabled
EBS sftp
OLTA sftp
RMS sftp
EFS sftp
OSA sftp
DH esb
FATE rs232
Risks
EFS - terminating end has opted for making changes on the
day without testing to their production
DH – code change needed to be implemented on the day to
establish Rel:17 communications
SGL – 0 Interface Transfers 3 of 3
23
IEMS – MAIN Control Enabled
IEMS – PR2 Control Enabled
ICCP: SP
ICCP: SSE
ICCP: Coreso
ICCP: UKPN
ICCP: ENW
ICCP: EAS(RTE)
Risks
All ICCP connections dual feed Rel:10 and Rel:17
Activities are to establish redundant connections to Rel:17
Interface transfers complete
Status
PR2 = Active
MAIN = Standby
PR1 = Available
PR1 Control Enabled in preparation
of promotion to Standby
Duration Est. 15-20 minutes
SGL – 0 Establish PR1 as Standby
IEMS
24
IEMS – DBU Control Enabled
IEMS – MAIN Control Enabled
SUB
IEMS – PR1 Control Enabled
IEMS – PR2 Control Enabled
Interfaces transfers complete
PR1 Promoted to Standby
Final Status
PR2 = Active
PR1 = Standby
MAIN = Available
DBU = Available
System check conducted by CHT
Duration Est. 15-20 minutes
SGL – 0 Establish PR1 as Standby
IEMS
25
IEMS – DBU Control Enabled
IEMS – MAIN Control Enabled
SUB
IEMS – PR1 Control Enabled
IEMS – PR2 Control Enabled
Questions