2015.09.29 Mike Yamane Grid Op Integration Storage
Island Grid Operations and Integrating Large Scale Solar PV Tuesday September 29th, 2015
KIUC’s Island Grid Island utility, no grid support Approximately 30,000 meters 2 major generation facilities total 126 MW capacity. Peak of 78 MW 4-6 MW Small Hydros 31 MW Utility Scale Solar PV. 10 MW Battery 7 MW Biomass
21 MW Customer Solar
Technical Challenges Unique to Island Grids
60.3 60.2 60.1 60 HZ
59.9 59.8 59.7 8 A.M.
6 P.M.
KIUC System Operations Normal Operations •
24/7 operation keeping lights on.
•
Maintaining proper voltage (60KV, 12.47KV, 120V).
•
Maintain proper frequency (60.00 Hz).
•
How do we maintain proper voltage and frequency.
• Automatic Voltage regulators • Turning on additional generating units • AGC (Automatic Generation Control) SCADA • Operators monitoring system.
KIUC System Operations cont. Emergency Operations Sudden loss of generation unit. Transmission line equipment failure Substation equipment failure. Distribution equipment failure Weather related events. Man-made events. All these events happen suddenly and without warning. How do we maintain Voltage and Frequency?
KIUC’s Frequency Response to System Disturbance
60Hz
59.0Hz
6
Frequency Response (D-8 Trip)
Technical Issues to Grid due to PV Ramp rates may exceed machine response. Load shedding may occur. Voltage variations on individual feeders(Flicker). Stress on machines. Instability on system.
Integrating Large Scale Solar PV Generator Tuning Battery Energy Storage Inverter Settings High Speed Recorders Curtailment Device Requirement
10
Inverter Settings Requirement
KIUC Curtailment Device Requirement Oversizing vs. Right Sizing 2nd AMI meter
Oil 91%
Oil 62%
Thank you! (Mahalo!) Contact Information Michael Yamane P.E. Chief of Operations KIUC
4463 Pahee St. Lihue, 96766 [email protected] 808-246-8208 13
KIUC’s Island Grid Island utility, no grid support Approximately 30,000 meters 2 major generation facilities total 126 MW capacity. Peak of 78 MW 4-6 MW Small Hydros 31 MW Utility Scale Solar PV. 10 MW Battery 7 MW Biomass
21 MW Customer Solar
Technical Challenges Unique to Island Grids
60.3 60.2 60.1 60 HZ
59.9 59.8 59.7 8 A.M.
6 P.M.
KIUC System Operations Normal Operations •
24/7 operation keeping lights on.
•
Maintaining proper voltage (60KV, 12.47KV, 120V).
•
Maintain proper frequency (60.00 Hz).
•
How do we maintain proper voltage and frequency.
• Automatic Voltage regulators • Turning on additional generating units • AGC (Automatic Generation Control) SCADA • Operators monitoring system.
KIUC System Operations cont. Emergency Operations Sudden loss of generation unit. Transmission line equipment failure Substation equipment failure. Distribution equipment failure Weather related events. Man-made events. All these events happen suddenly and without warning. How do we maintain Voltage and Frequency?
KIUC’s Frequency Response to System Disturbance
60Hz
59.0Hz
6
Frequency Response (D-8 Trip)
Technical Issues to Grid due to PV Ramp rates may exceed machine response. Load shedding may occur. Voltage variations on individual feeders(Flicker). Stress on machines. Instability on system.
Integrating Large Scale Solar PV Generator Tuning Battery Energy Storage Inverter Settings High Speed Recorders Curtailment Device Requirement
10
Inverter Settings Requirement
KIUC Curtailment Device Requirement Oversizing vs. Right Sizing 2nd AMI meter
Oil 91%
Oil 62%
Thank you! (Mahalo!) Contact Information Michael Yamane P.E. Chief of Operations KIUC
4463 Pahee St. Lihue, 96766 [email protected] 808-246-8208 13
