AncillaryServices.KirschenChapter5Slides.LTEdits.pdf

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Example: Voltage Control under Normal Conditions A B Load • Controlling the voltage at B using the generator at A? Power Transfer [MW] VB [p.u.] VA [p.u.] QA [MVAr] 49.0 1.05 0.95 -68.3 172.5 0.95 1.05 21.7 Table 5.1 • Local voltage control is much more effective • Severe market power issues in reactive support © Daniel Kirschen & Leigh Tesfatsion 2011 40
Example: Reactive support After Line Outage Post-contingency reactive power injection at bus B [MVAr] 100 90 80 70 60 50 40 30 20 10 0 A B 0 20 40 60 80 100 120 140 Figure 5.7: Power Transfer [MW] © Daniel Kirschen & Leigh Tesfatsion 2011 41
Page 1 and 2: System Reliability and Ancillary Se
Page 3 and 4: Key Definition: Ancillary Services
Page 5 and 6: System Reliability = Adequacy + Sec
Page 7 and 8: Corrective Action • Taken only if
Page 9 and 10: Needs for Ancillary Services (Secti
Page 11 and 12: Balancing Generation and Load…Con
Page 13 and 14: Balancing Generation and Load … C
Page 15 and 16: Balancing Generation and Load … C
Page 17 and 18: Balancing Services…Continued Diff
Page 19 and 20: Example: Load (MW) Over 5 Trading P
Page 21 and 22: Actual Power Produced Over the 5 Pe
Page 23 and 24: Sources of Imbalance & correspondin
Page 25 and 26: Regulation Service in More Detail:
Page 27 and 28: Spinning/Non-Spinning Reserve Servi
Page 29 and 30: Network Issues: Contingency Analysi
Page 31 and 32: Example: Thermal Capacity A B Figur
Page 33 and 34: Example: Transient Stability • As
Page 35 and 36: Example: Voltage Stability … Cont
Page 37 and 38: Voltage Control & Reactive Support
Page 39: Example: Voltage Control under Norm
Page 43 and 44: Other Forms of Ancillary Services
Page 45 and 46: Obtaining Ancillary Services (A/S)
Page 47 and 48: How much A/S should be procured …
Page 49 and 50: One Possibility: Compulsory A/S Pro
Page 51 and 52: Disadvantages of Compulsory Provisi
Page 53 and 54: Another Possibility: Have an A/S Ma
Page 55 and 56: Disadvantages of an A/S Market •
Page 57 and 58: Advantages of Demand-Side Provision
Page 59 and 60: Who Should Pay for A/S? • Differe
Page 61 and 62: Example: Allocating Cost of Reserve
Page 63 and 64: Selling A/S • Selling A/S is a bu
Page 65 and 66: Notation: 1 2 x 1 x 2 P min P max R
Page 67 and 68: First-Order Necessary Conditions fo
Page 69 and 70: Case 1: • No binding constraints
Page 71 and 72: Case 3: • Unit operates at minimu
Page 73 and 74: Case 6: • Reserves limited by ram
Page 75: Case 8: • Generator at minimum ou

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