Control and Design of Microgrid Components - Power Systems ...

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Figure 5.3 Load Line to Line Voltages, 100V/div (upper traces) and Unit Currents, 10A/div (lower traces). [20ms/div] Figure 5.4 Load Line to Line Voltages (upper traces) and Unit Currents (lower traces). [1s/div] 68
Figure 5.5 shows the measures of P and Q as well as the measure of V at unit 1 when unit 1 is operating in parallel to unit 2. The unbalance is determined by a phase on the load of unit one being open. The overall voltage unbalance at the terminals of unit 1 is reduced to 3.97% due to the presence of unit 2. Figure 5.6 shows the same quantities for unit 2. Being that this second unit is farther away from the unbalanced load, the amplitudes of the oscillations at 120Hz are reduced. Figure 5.5 Unit 1 - Two Units in Parallel. [50ms/div] 69
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PSERC Control and Design of Microgr
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Information about this project For
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Executive Summary Economic, technol
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Table of Contents Chapter 1. Introd
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List of Figures Figure 1.1 Microgri
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List of Figures (continued) Figure
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Chapter 1. Introduction Distributed
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1.2.2 Operation and Investment The
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Figure 1.1 Microgrid Architecture D
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Chapter 2. Static Switch The static
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ω ωo ω1 Preq Pgrid P Pload Figur
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2.3 Synchronization Conditions The
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droop. The issue is that it is poss
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This synchronizing behavior is unac
Page 29 and 30: Figure 2.12 shows on the upper plot
Page 31 and 32: Chapter 3. Microsource Details This
Page 33 and 34: with different size. This control i
Page 35 and 36: u + _ K F ω o + _ ω o s P u ω o
Page 37 and 38: Q versus E Droop E req Q m Q _ + E
Page 39 and 40: currents from the microsources incr
Page 41 and 42: inverter ratings limits (in kVA) ca
Page 43 and 44: A 16 DG B 22 DG Static Switch C 8 D
Page 45 and 46: ω Unit 2 Max Unit 2 ω o Unit 1 ω
Page 47 and 48: Unit 1 Min Unit 2 ω Unit 1 ΔPmin
Page 49 and 50: positive value. When this value has
Page 51 and 52: needs of power. This solution would
Page 53 and 54: This expression is very similar to
Page 55 and 56: Li-Pmax < Fi < Li for unit ‘i’
Page 57 and 58: ω ω ω o Fo ω o Fo F F Unit Powe
Page 59 and 60: This control has been implemented i
Page 61 and 62: characteristic will coincide with t
Page 63 and 64: ating on the voltage output, establ
Page 65 and 66: Prime Mover DC Storage Voltage Sour
Page 67 and 68: linearity. A value of 30 degrees pr
Page 69 and 70: Figure 4.8 P and Q Plane Capability
Page 71 and 72: 4.4 System Ratings The inverter per
Page 73 and 74: Switching Sequence 145 146 136 236
Page 75 and 76: generated by the inverter: the VA r
Page 77 and 78: % of voltage unbalance = 100 maximu
Page 79: Figure 5.2 shows the plots for P,Q
Page 83 and 84: Figure 5.7 One Unit Connected to th
Page 85 and 86: Microsources are connected to the l
Page 87 and 88: The transformer impedance can be se
Page 89 and 90: o r 1 = 0.3277 Ω = 0.0547 Ω x x 1
Page 91 and 92: Table 6.3 Load Data Summary. Rated
Page 93 and 94: The worse case scenario is represen
Page 95 and 96: The filtering is achieved by a low
Page 97 and 98: works with an internal voltage leve
Page 99 and 100: terminals to achieve each of the th
Page 101 and 102: Table 6.5 Lookup Table for Switchin
Page 103 and 104: Chapter 7. Microgrid Tests There ar
Page 105 and 106: Table 7.1 Summary of Experiments fo
Page 107 and 108: Table 7.2 Series Configuration Cont
Page 109 and 110: Figure 7.6 Control of F1 and F2, Fe
Page 111 and 112: Figure 7.10 Control of P1 and F2, F
Page 113 and 114: pu, but when it is fed from a remot
Page 115 and 116: Unit 1: P, Q, F, Frequency, Voltage
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Unit 1: P, Q, F, Frequency, Voltage
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7.4.1 Unit 1 (F), Unit 2 (F), Impor
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Import From Grid, Setpoints are 10%
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Island, Setpoints are 10% and 90% o
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7.4.2 Unit 1 (F), Unit 2 (F), Expor
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Export to Grid, Setpoints are 10% a
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7.4.3 Unit 1 (F), Unit 2 (P), Impor
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7.4.4 Unit 1 (F), Unit 2 (P), Expor
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Chapter 8. Conclusions This work sh
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[14] Lasseter, R.,” Microgrids,
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