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Maximising the Penetration of Wind The Role of Grid Codes and Markets

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Key findings System Changes Facilitation of Renewables , Report (June 2010) Ensuring a Secure System , Report (June 2011) Frequency Control – PowerPoint PPT presentation

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Title: Maximising the Penetration of Wind The Role of Grid Codes and Markets


1
Maximising the Penetration of WindThe Role of
Grid Codes and Markets
  • Jonathan OSullivan
  • April 2012

2
European Targets
  • Ireland has ambitious targets for renewables,
    particularly wind

Based on analysis of National Renewable Action
Plans (NREAPs) as submitted by Member States
3
Real Time Operational Limits and Impact on RES-E
75
50


4
Real Time Operational Limits and Impact on RES-E
Wind Curtailment Levels
Maximum Allowable Real Time Wind Level
5
Key findings System ChangesFacilitation of
Renewables, Report (June 2010) Ensuring a
Secure System, Report (June 2011)
  • Frequency Control
  • Lower Inertia/Faster RoCoF
  • Voltage Dip of windfarms could exceed largest
    infeed
  • Increased need for ramping
  • Reserves important for LoLI
  • Regulation might be an issue
  • Voltage Control
  • Embedded generation impacts traditional reactive
    control
  • Volume of Reactive power reducing
  • Voltage Collapse (over compensation)
  • Transient Stability integrity compromised

6
Frequency Control Lower Inertia
7
Frequency Control Voltage Dip Largest
Contingency
  • Winter Maximum, 75 Wind
  • - Post fault wind MW reductions
  • Faults with wind reductions gt 400MW

8
Frequency Control Minimum Frequency following
event
9
Frequency Control Ramping Requirement
10
Voltage Control Reactive Power Availability
(Sync)
11
Voltage Control Transient Instability
SNSP
12
Grid Code and Technical Solutions
  • Frequency Control
  • Solution
  • Lower Inertia/Faster RoCoF
  • Voltage Dip of windfarms could exceed largest
    infeed
  • Increased need for ramping
  • Reserves important for Loss of largest infeed
  • Regulation might be an issue
  • G59 settings/philosophy and conventional
    generator capability
  • Fast recovery (DC Chopper) or new operational
    strategy
  • Control of active power output
  • Define need in different timeframes
  • Part load windfarms with basic frequency response

13
Grid Code and Technical Solutions
  • Voltage Control
  • Solution
  • Embedded generation impacts traditional reactive
    control
  • Volume of Sync Reactive power reducing
  • Voltage Collapse (over compensation)
  • Transient Stability integrity compromised
  • Reactive Capability and Control Modes, New Op
    Strategy
  • Windfarms provide similar capability to
    conventional
  • No use of capacitors to replace sync reactive
  • Fast reactive response
  • Sync gen or STATCOM Like performance

14
Grid Code and Markets Reserve Capability of
Generators
15
(No Transcript)
16
Incentivising the PortfolioMarket Signals
  • Incentivising performance of plant
  • Financial Mix will move to higher capital lower
    variable cost technologies
  • Obtaining the plant mix that matches the system
    requirements and achieves the policy objectives

Fixed Costs Costs
Variable Costs
Tomorrow
Today
17
(No Transcript)
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