it architecture - uk power networks · e q e v v q e sm vo l t ag e a l er t co n f i g u r er...

2011. UK Power Networks. All rights reserved 1

IT Architecture

Session 4a James Gooding & Adrian Putley

UK Power Networks & CGI

In Partnership with:

2011. UK Power Networks. All rights reserved

Agenda

2

• Before Low Carbon London

• Our partners

• The journey through LCL

• Lessons from the trials

• In the future – post 2030


Low Carbon London

Importance of Information Technology

• The project that has trialled and demonstrated a broad range of smarter potential

approaches to how DNOs may invest and operate in the future.

• LCL has brought together leading industry specialists to emulate the 2020/2030

electricity supply chain.

• IT/OT requirements and architectures for smart grid management techniques will be

relevant to:

– Network monitoring;

– Smart meter utilisation;

– Forecasting;

– Planning;

– Control and operations; and

– Commercial aspects such as billing and settlements.

3

System Operator

Distribution Network Operator

Supplier Customer


DMS DMS

SCADA

OMS

Typical historical UK DNO IT

architecture development

4

Enterprise Asset (& Work)

Management

MPRS

Premise

Address

Management

Network-

Premise

Linkage

Management

Modelling Tools

PAF data (now AddressBase)

GIS

some DNOs still have raster

datasets


DMS DMS

SCADA

OMS

Typical historical UK DNO IT

architecture development

5

Enterprise Asset (& Work)

Management

MPRS

Premise

Address

Management

Network-

Premise

Linkage

Management

Modelling Tools

PAF data (now AddressBase)

OMS added as extension of HV

DMS, or separate application.

Early SCADA implementation at

EHV.

EAM originated as maintenance

scheduling system.

Early GISs often used raster scans of

traditional records. Original main use

was for printing by field staff.

Gradual digitisation of

remaining raster

layers.

Network-premise

linkage handling added.

Still relatively modest level of

systems integration

GIS

some DNOs still have raster

datasets

Connectivity model, pan/zoom

graphics and switching/safety logic

added – initially at EHV only.

HV wallboards

migrated later.


Low Carbon London

Proposed solution diagram

6

Smart Meter Data Collection

Carbon Tools Distribution Network Management System

LCL Control

Centre

Existing

SCADA

ENMAC

Existing

monitoring RTUs

New monitoring

Wind Twinning

Learning Lab

Operational Data Store Energy Suppliers Active Network Management Commercial Aggregators

Residential customers SMEs / Schools / Community

centres, etc.

Customer / stakeholder engagement

EV Charge Points I&C

Customers

Distributed

Generation


Low Carbon London

Logical Architecture

7 Source: LCL Report D2


LCL Engineering

Instrumentation Zones

• Three EIZs: Brixton, Merton and Queen’s Park.

• c. 31,000 MPANs across the three EIZs

• 106 meters located at the end of feeders: proxy for voltage

measurements at LV customer premises



Network Visibility & Data

Collection – History

9

Main Substation

Secondary Substations

MPANs

Voltage, Current,

Active & Reactive

Power

each Tx circuit Current per feeder

Voltage, Current per phase

Total kVA, Overall Load

Factor, Air Temperature

all at Tx tail

Active & Reactive

Import & Export

Average V

Sag/Swell V

(events) Smart Meters

Link Box

T5000 RTU

Callisto RTU

LCL RTU

Tyco / EATL RTU

Voltage Current, Load

Factor, Harmonics

per fuse or link

Voltage at LV

busbar

Current, Load

Factor,

Harmonics per

feeder

all per phase

EHV

HV

LV


Data integration and quality

Key findings

• Integrated network topology & asset model needs data combined

from several source systems – not straightforward, some level of

record ID mismatches

• Network-premise connectivity data is the hardest to achieve high

quality

– …but HH MPANs and those of PCs 5-8 offer low-hanging fruit for

improvements: <1% of all premises, but PCs 5-8 each consume

as much as 39 domestic premises and HH MPANs even more.

10


Building on initial LCL analysis (C1)

• Only 0.35% of all the phases measured showed more than 1% of

readings outside of statutory limits using 10 minute data resolution

• Voltage on the London network is towards the higher end of the

allowable limits

• Lower voltage limit is responsible for more voltage

excursions currently



Sensitivity analysis

Alerts per year for EIZs

Voltage limits: very high extreme above the statutory limits

(+14% / -10%), the statutory limit (+10% / -6%) and two levels under

that (+12% / -8% and (+8% / -5%)

12

# alerts /yr

10 min duration 30 min duration 60 min duration

+8% / -5%

High: 121,453 High: 56,445 High: 26,194

Low: 2,647 Low: 1078 Low: 653

Total: 124,100 Total 57,523 Total: 26,847

+10% / -6%

High: 61 High: 1 High: 0

Low: 1,563 Low: 691 Low: 499

Total 1,624 Total: 692 Total: 499

+12% / -8%


Low: 641 Low: 414 Low: 367

Total 652 Total: 414 Total: 367

+14% / -10%


Low: 415 Low: 355 Low: 332

Total: 416 Total: 355 Total: 332

Source: LCL Report D2


Power quality management process

13

Raise job

Call

Customer Service Centre

Update / Close job

Update customer

Investigate on site

Known fault on network

causing disturbance?

Voltage complaints supervisor

Further analysis

required?

Record result s

Install additional monitoring equipment

Update customer

Reconfigure network settings

Design system

upgrade

Evaluate options

Investigate site data

Request and analyse smart meter

data

SM voltage alerts

SM

SM

SM



Future Scenarios

LCL Report D2 studied two future scenarios:

Today’s presentation is focussed on Scenario A.

14

Scenario Period Date Description Characteristics

A

Late ED1 2021 High-Confidence Near-Term Post-SMIP; DSR use; conservative LCT take-up estimates

B

ED2 2027 Longer-Term More optimistic take-up estimates; includes ANM


Smart SM voltage reporting

configuration



RTUs

DUoS Billing

Historian

DMS

GIS

EAM

Network state data

Time series

Network topology, asset nameplate & premise

connectivity data

OMS

Planning Tools

SCADA

CRM

Asset nameplate &

condition data

IVR Web

Outage data

Control diagram

Financials

Field Force

Network-premise data

improvements

DTN gateway

DNO IT/OT

Architecture

Evolution



RTUs

DUoS Billing

Historian

DMS

GIS

EAM

Network state data

Time series


connectivity data

OMS

Planning Tools

SCADA

CRM

Asset nameplate &

condition data

IVR Web

Outage data

Control diagram

Financials

Field Force


improvements

DTN gateway

17

Portable

Monitor

Historical

readings

Historical

LV data

DMS

Historian

RTUs

Real-time modelling

Control diagram

Secondary

SCADA

Portable

MonitorTSO

ICCP

Network state dataNetwork topology, asset nameplate & premise

connectivity data

Additional monitoring, and

data exchange with TSO



RTUs

DUoS Billing

Historian

DMS

GIS

EAM

Network state data

Time series


connectivity data

OMS

Planning Tools

SCADA

CRM

Asset nameplate &

condition data

IVR Web

Outage data

Control diagram

Financials

Field Force


improvements

DTN gateway

18

Portable

Monitor

Historical

readings

Historical

LV data

DMS

Historian

RTUs

Real-time modelling

Control diagram

Secondary

SCADA

Portable

MonitorTSO

ICCP


connectivity data

HH Meter

Advances

OMS

NDAG

(gateway)

DCC

Profile

Aggregator

Reading

requests

Consumption

Readings

Profile

Repository

Profiles

Voltage alerts

CEP

(high volume buffer)

Last gasps/first breaths

Historical profiles

Voltage logs

E

Q

E

V

V

Q

E

SM Voltage

Alert Configurer

Voltage reporting settings

Q

E

V

LCTsLCTs

SMs

New SM installations

Q

E Energisation state check

Ad-hoc query

V Voltage logs request

HH meter

advances

Smart Metering

systems



RTUs

DUoS Billing

Historian

DMS

GIS

EAM

Network state data

Time series


connectivity data

OMS

Planning Tools

SCADA

CRM

Asset nameplate &

condition data

IVR Web

Outage data

Control diagram

Financials

Field Force


improvements

DTN gateway

19

Portable

Monitor

Historical

readings

Historical

LV data

DMS

Historian

RTUs

Real-time modelling

Control diagram

Secondary

SCADA

Portable

MonitorTSO

ICCP


connectivity data

HH Meter

Advances

OMS

NDAG

(gateway)

DCC

Profile

Aggregator

Reading

requests

Consumption

Readings

Profile

Repository

Profiles

Voltage alerts

CEP



Historical profiles

Voltage logs

E

Q

E

V

V

Q

E

SM Voltage

Alert Configurer


Q

E

V

LCTsLCTs

SMs


Q


Ad-hoc query


HH meter

advances


Metered

curtailment

readings InvoicesDMS

Network state data

LCT state data

Real-time modelling

DSR gateway

DSR owners/

aggregators

Unavailability

data

Control diagramDSR

symbols Dispatch

requests

DSR

Settlements

Payment requests

LFMM


connectivity data

LCT master data

I&C LCT

master data

DSR facilities


RTUs

DUoS Billing

Historian

DMS

GIS

EAM

Network state data

Time series


connectivity data

OMS

Planning Tools

SCADA

CRM

Asset nameplate &

condition data

IVR Web

Outage data

Control diagram

Financials

Field Force


improvements

DTN gateway

20

Portable

Monitor

Historical

readings

Historical

LV data

DMS

Historian

RTUs

Real-time modelling

Control diagram

Secondary

SCADA

Portable

MonitorTSO

ICCP


connectivity data

HH Meter

Advances

OMS

NDAG

(gateway)

DCC

Profile

Aggregator

Reading

requests

Consumption

Readings

Profile

Repository

Profiles

Voltage alerts

CEP



Historical profiles

Voltage logs

E

Q

E

V

V

Q

E

SM Voltage

Alert Configurer


Q

E

V

LCTsLCTs

SMs


Q


Ad-hoc query


HH meter

advances


Metered

curtailment


Network state data

LCT state data

Real-time modelling

DSR gateway

DSR owners/

aggregators

Unavailability

data

Control diagramDSR

symbols Dispatch

requests

DSR

Settlements

Payment requests

LFMM


connectivity data

LCT master data

I&C LCT

master data

Forecast Preparation(manual using end-user

computing tools)

Forecast

Repository

Forecast profilesTime series

Events

Switch states


computing tools)

Planning Tools

AnalyticsElement

Energy

Model

State estimation

Analytics,

forecasting &

planning

facilities


RTUs

DUoS Billing

Historian

DMS

GIS

EAM

Network state data

Time series


connectivity data

OMS

Planning Tools

SCADA

CRM

Asset nameplate &

condition data

IVR Web

Outage data

Control diagram

Financials

Field Force


improvements

DTN gateway

21

Portable

Monitor

Historical

readings

Historical

LV data

DMS

Historian

RTUs

Real-time modelling

Control diagram

Secondary

SCADA

Portable

MonitorTSO

ICCP


connectivity data

HH Meter

Advances

OMS

NDAG

(gateway)

DCC

Profile

Aggregator

Reading

requests

Consumption

Readings

Profile

Repository

Profiles

Voltage alerts

CEP



Historical profiles

Voltage logs

E

Q

E

V

V

Q

E

SM Voltage

Alert Configurer


Q

E

V

LCTsLCTs

SMs


Q


Ad-hoc query


HH meter

advances


Metered

curtailment


Network state data

LCT state data

Real-time modelling

DSR gateway

DSR owners/

aggregators

Unavailability

data

Control diagramDSR

symbols Dispatch

requests

DSR

Settlements

Payment requests

LFMM


connectivity data

LCT master data

I&C LCT

master data


computing tools)

Forecast

Repository

Forecast profilesTime series

Events

Switch states


computing tools)

Planning Tools

AnalyticsElement

Energy

Model

State estimation


Recommendations

• System changes are likely to be incremental and evolutionary

rather than radical

• Increasing need for a fully integrated network topology/

asset/premises model, with LCT data linked into this

• Most high-volume metering/measurement data need only be

collected selectively when/where required

• Investment in additional network monitoring should be targeted at

networks close to capacity or with significant LCT adoptions

• Smart Meter data will help considerably with outage and voltage

excursion management, and assist forecasting and planning for

networks that are approaching the monitoring threshold

• Standardisation will increasingly be beneficial – the interfaces

between DSR participants are a good example.


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