Development of System Operation Network Codes ACER Workshop 24 August 2011 Ole Jan Olesen, Convenor...

Development of System Operation Network

Codes

ACER Workshop24 August 2011

Ole Jan Olesen,

Convenor ENTSO-E Working Group on

European Operational Standards

The situation today

Development of the Network Codes

Scoping experiences

Conclusions

Presentation outline

Development of System Operation Network Codes | 110824 | of 23

What works today?

• All synchronous areas have rules for the operation of the interconnected system

• These rules are based on the physics of the system to which they apply

• These rules and operational practices, developed and improved over the last 50 years, are tested and confirmed by the high reliability of the systems


What is missing?

• The current rules for system operation mostly address TSO or TSO-TSO issues. Rules for other system users need to be addressed

• TSOs exercise different levels of generation control and have different contractual relations with DSOs, generators, HVDCs and other system users

• Existing rules are not enforceable towards system users other than TSOs

• Common rules for interoperability between synchronous systems do not exist yet


Why are the rules not the same?

• Different sizes of synchronous systems (Iceland – 2.6 GW, Continental Europe – 670 GW)

• Different frequency regulation philosophy (decentralized by PF Control in Continental Europe, centralized by F Control in Great Britain)

• Different interconnectivity with neighbours (Germany – 7 neighbours, Serbia – 8 neighbours, Ireland – 1 neighbour via DC)

• Different generation mix (12 % of hydro in CE, 56 % of hydro in Nordic system)


What’s the proposal?

• Pan-European Network Codes should stay concise and general (the “what”)

• The more detailed Network Codes (the “how”) should be requested at the synchronous level

• The existing detailed regional rules should be “integrated” in the Network Codes and by this become a legal reference


The situation today


Scoping experiences

Conclusions



National Codes National Codes

Summary table of existing codes

Type I Type II

Regional Code: Continental Europe, Nordic, Baltic

Regional Code = National Code: Ireland, UK

TYPE I – regional inter TSO cooperation in synchronous areaTYPE II – one TSO on regional level

National Codes

Conclusion

Objective is on the basis of Type I to: (1) harmonise regional (inside synchronous areas) operational rules(2) develop interregional (between synchronous areas) operational rules

Result

Pan-European System operation codes (1)


Separate regional codes

Pan-European

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General interregional and harmonised regional codes

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Pan-European System operation codes (2)


• The future Network Codes related to System Operation as part of

the agreed 3-year plan

Proposed structure and timeline of the Operational NCs

1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4

Products/legislation relevant for effective implemention of the IEM

FG on system operation 6

NC on operational security

NC on operational planning and scheduling

NC on load-frequency control and reserves

Other Deliverables currently particularly uncertain or perceived as lower priority

NC on operational training (based on System Operation FG)

NC on requirements and operational procedures in emergency (based on System Operation FG)

2014Deliverable

2012 20132011


NC on Operational security (Q1-Q4/2012)


Some new applications

• Need to address the impact of significant RES increase (not only wind generation but current steep increase of installed PV)

• Need to ensure the compatibility with new market developments (e.g. flow-based capacity allocation)

• Operation of HVDCs between synchronous areas


time

level of detail

Combined “top-down” and “bottom-up” approach

Improvement loop

FG: framework Guidelines

NC: Network Codes

low

high

FG

NC

NC

EXISTING RULES IN THE SYNCHRONOUS SYSTEMS

NC


The situation today


Scoping experiences

Conclusions



Interdependencies (1)

• Drafting of Network Codes for System Operation is more

comprehensive than of former regional “Operational

Handbooks”

Technical issues

Regional requirements

Network Codes

Codes Development

ProcessPan-

European harmonis

ation

External stakeholders

European law


Interdependencies (2)

• Drafting of Network Codes for System Operation requires

extensive coordination

Initial Impact Assessment

Framework Guideline

System Operation Network Codes

Market Network Codes

Pilot Network CodeOther System Development

Network Codes

Terms and definitions


Meeting the expectations

• Workshops with stakeholders are very useful to:

Stakeholders


ENTSO-E

Draft NC on Operational security (1)

Achieve common pan-European principles

State basics for Operational security

Increase coordination of System operation

Include all Stakeholders in System operation

Achieve common pan-European principles

State basics for Operational security

Increase coordination of System operation

Include all Stakeholders in System operation

Why? Why? What? What?

Topic Number of pages

1. States of system operation 3½

2. Congestion and active power management 3

3. Voltage control and reactive power management 3

4. Short-circuit currents management 3

5. Power system stability management 3

6. Contingency assessment and handling 5½

7. System protection 1½

8. Frequency quality 3½

9. Operational testing, monitoring and investigation 3½

10. Operational training and certification 3

Total including List of content and Introduction 46




Emergency operations Capacity calculation IT communication infrastructure and

data standards

Emergency operations Capacity calculation IT communication infrastructure and

data standards

Normal operational security issues States of system operation Testing and monitoring Training and certification

Normal operational security issues States of system operation Testing and monitoring Training and certification

Code excludesCode excludesCode includesCode includes



May result in unprofitable harmonisations of “How”

As a pan-European law difficult to adjust to future developments

May result in unprofitable harmonisations of “How”

As a pan-European law difficult to adjust to future developments

Express pan-European harmonisations of “What”

Open for future developments Open for regional & national

implementations Legally stable

Express pan-European harmonisations of “What”

Open for future developments Open for regional & national

implementations Legally stable

More detailed requirements More detailed requirements Mostly general requirements Mostly general requirements

The situation today


Scoping experiences

Conclusions



Conclusions

• In the area of system operation a stepwise approach consists in building on the currently existing rules of the synchronous areas

• A continous improvement loop ensures consistent shift towards pan-European standards

• ENTSO-E is committed to work with ACER and EC towards the best possible quality of the Framework Guidelines and Network Codes


Development of System Operation Network Codes ACER Workshop 24 August 2011 Ole Jan Olesen, Convenor...

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