XCEL ENERGY PROJECT UPDATES Michelle Lim

Transcription

1 XCEL ENERGY PROJECT UPDATES Michelle Lim

2 PEÑA STATION/PANASONIC PILOT 1MW/2MWh Younicos Lithium-Ion Battery 4 x Y-cubes at 250 kw 1.3MW Carport 13.2 kv 200kW Panasonic rooftop PV Microgrid Switchgear and Relays SEL-751 Relay S&C 13.8 kv Islanding Switch 2 2

3 USE CASES Microgrid/Islanding of Panasonic building Peak Demand Reduction System Peak Demand Reduction (AutoGrid) Feeder Peak Demand Reduction Voltage Regulation PV smoothing/ramp Rate Limiting Energy Arbitrage Frequency Response 3 3

4 RAMP RATE ON 8/21/17 ECLIPSE PV Max Ramp Rate ~4kW/s Eclipse 08/21/2017 Panasonic Project Power (kw) PV Max Ramp Rate ~ 48 kw/s 0 10:30:00 11:42:00 12:54:00 14:06:00 15:18:00 16:30: PV Output -400 Battery Output -600 Time of Day 4 4

5 PV SMOOTHED OUTPUT 8/21/ /21/2017 "Smoothed" Ramp Rate Power (kw) PV Output PV+BESS Output 0 13:04:48 13:12:00 13:19:12 13:26:24 13:33:36 13:40:48 13:48:00 Time of Day 5 5

6 STAPLETON NEIGHBOURHOOD Stapleton feeder has ~18.5% PV penetration Utility-Sited Systems: System Provider: Northern Reliability Six Li-Ion battery energy storage systems Sited along the feeder at two different phases Behind-the-Meter Systems: System Provider: Sunverge Six Li-Ion battery energy storage systems Sited in a customer s home 6 6

7 STAPLETON UTILITY SITED OVERVIEW Northern Reliability Modular Units: 2 x 18 kw/69 kwh 2 x 36 kw/138 kwh 2 x 54 kw/207 kwh Use Cases: Peak Demand Reduction Voltage Regulation Solar Time Shifting Energy Arbitrage 7 7

8 STAPLETON BEHIND-THE-METER OVERVIEW Sunverge SIS units 6 x 6 kw/15.5 kwh Use Cases: Providing Residential Backup Power Peak Demand Reduction Solar Time Shifting Volt-Watt Operation 8 8

9 CHARGE/DISCHARGE CYCLE FOR TESTING VARIOUS METRICS A charge/discharge test with a fixed duty cycle test can be used to find: Efficiency of the system ηη = EE ddddddddddddddddd EE aaaaaa ddddddddddddddddd EE ccccccccccc EE aaaaaa ccccccccccc Charge/discharge capacity compared to the rated energy of system Rated continuous charge and discharge power compared to the rated power of the system 9 9

10 TENTATIVE RESULTS EFFICIENCY (SEPT OCT TESTING) 100 Efficiency of SIS Units with Different Operations Efficiency (%) STS & SPDR Net Zero VRO & SPDR Bill Management Operations STS Solar Time Shifting, SPDR System Peak Demand Reduction, VRO Voltage Regulation, Net Zero Set the Home to have Net Zero 10 10

11 BESS POWER OUTPUT WITH DIFFERING EFFICIENCY 2000 BESS Power Output :00 3:00 6:00 9:00 12:00 15:00 18:00 21:00 0:00 Power (W) High efficiency since the BESS is not performing any operation Time of Day Lower efficiency since BESS is performing an intensive operation 11 11

12 SAMPLE TEST SOLAR TIME SHIFTING 7,000 Solar PV Production (Battery-PV) Charge battery Discharge battery 6,000 5,000 Power (W) 4,000 3,000 2,000 1, :00 3:00 6:00 9:00 12:00 15:00 18:00 21:00 0:00-1,000 Time of Day

13 PRELIMINARY TEST RESULT TIME-OF-USE BILL MANAGAMENT 6,000 4,000 2,000 Site meter demand with battery (load convention) Site meter demand without battery (load convention) Charge battery Peak period Power (W) -2, :00 3:00 6:00 9:00 12:00 15:00 18:00 21:00 0:00-4,000-6,000 Begin discharging battery -8,000 Time of Day

14 PEAK DEMAND REDUCTION TEST SAMPLE 2,500 2,000 Site meter (demand) Battery output 1,500 1,000 Power (W) :57 7:26 7:55 8:24 8:52 9:21 9: ,000-1,500 Battery discharges to maintain load at net zero demand Time of Day

15 TEST SAMPLE RESULTS 3000 Test Results for BTM Unit Power (W) Set Site Meter to 500 W PV Charging Set Site Meter to 0 W Charge from Grid 0 0:00 3:00 6:00 9:00 12:00 15:00 18:00 21:00 0: Site PV Time of Day 15

16 Questions 16 16

17 YOUNICOS ENERGY STORAGE PARAMETERS Description Rated Apparent Power Rated Real Power Rated Energy Available Energy Value 1,000 kva 1,000 kw 2,100 kwh 1,690 kwh Round-Trip Efficiency 85.5 % Voltage Range Rated Continuous AC Current V 1,200 A Operating Temp. Range -10 C - 45 C Physical Dimension 42 x

18 NRI ENERGY STORAGE PARAMETERS 18 Description 18 kw System 36 kw System 54 kw System Rated Apparent Power 18 kva 36 kva 54 kva Rated Real Power 18 kw 36 kw 54 kw Rated Energy 69 kwh 138 kwh 207 kwh Round-Trip Efficiency Voltage Range Rated Continuous AC Current Operating Temp. Range Physical Dimension N/A V 94 A 187 A 281 A 56 x x C -50 C 112 x x x

19 SUNVERGE SIS UNIT 19

20 SUNVERGE ENERGY STORAGE PARAMETERS Description Value Rated Apparent Power 6 kva Rated Real Power 6 kw Rated Energy 15.5 kwh Available Energy kwh Round-Trip Efficiency 92.5 % Voltage Range V Rated Continuous AC Current 25 A Operating Temp. Range -20 C - 50 C Physical Dimension 76 x 34 x

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