Multi-agent System (MAS) in Advanced. Distribution Automation. • Fault detection
& isolation, then reconfiguration. • Agents send messages. • Communication.
Research Thrust: Advanced Distribution Automation Prof. Alex Flueck PhD Student: Cuong Nguyen In collaboration with S&C Electric
Advanced Distribution Automation • Modeling – Conductors, communication and control
• Distributed Autonomous Agents • Communication Latency • Future Work – Visualization – Preventing Outages with Distributed Generation & Storage – Optimizing Resource Allocation 2
Multi-agent System (MAS) in Advanced Distribution Automation
SWI: Switch AGT: Agent : communication link TEAM1={AGT1} TEAM2={AGT1,AGT2} TEAM3={AGT2,AGT4,AGT5} SOURCE
SWI1
AGT0
AGT1
115/12.47KV
5 AGT5
SWI5
• Fault detection & isolation, then reconfiguration • Agents send messages • Communication latency - critical!
SWI2
2
SWI4 3
4
AGT2 TEAM2
AGT4 TEAM3
TEAM1
3
Simulation on IEEE 34 node feeder Case study: temporary disturbance causes BRK_06 to open at time 1 sec
848 846 822
Team 6 844 820 864
Team 3
842 818
Team 2 800
BRK_06 802
SCT_18
808 812
806
SCT_42
814
836
858 850
824
834
826
860 SCT_62
Team 5
816
Team 1
888
832
SWI_28
840
SWI_88
890
Team 7
862
Team 8 838
810
852
Team 4
SWI_52 828
Point Latency (s) Probability
830
854
856
NORMAL RANDOM DISTRIBUTION OF COMMUNICATION LATENCY 1 2 3 4 5 6 7 8 0.0333 0.0667 0.1000 0.1333 0.1667 0.2000 0.2333 0.2667 0.0060 0.0120 0.0361 0.1265 0.6328 0.1265 0.0361 0.0120
9 0.3000 0.0060
10 0.3333 0.0060
4
Simulation Results • Statistical results after 500 simulations with same event.
5
Why DESS is needed ? • In “Grid 2030 Vision” report, Department of Energy has identified two of the top five concerns for the future smart grid: – Distributed Energy Storage System(DESS) – Distributed Intelligence and Smart Control(DISC)
• DESS application is very flexible: – Generation system: spinning reserve, firm up intermittent renewable energy sources – Transmission system: support load carrying capacity and stability, support voltage dip, peak shaving – Distribution system: peak shaving, power quality improvement; dynamic islanding
6
Reference DESS Installations (Electronic Converter Storage) Three 2MW NaS Battery installations in AEP distribution system, 2008 1MW NaS Battery installation for 11MW Wind Farm in Xcel Energy, 2009
Source: American Electric Power
34 MW NaS battery installation for 51MW Wind Farm, Japan, 2008
Source: SandC Electric
7 Source: www.ngk.co.jp
Simulation on IEEE 34 Node Feeder Event: team 4 fault A-B-G @ 0.05sec
848 846
822
Team 6 844 820 864
Team 3
ECS 860 842
818
Team 2 800
BRK_06 802
SCT_18
808 812
806
SCT_42
814
836
858 824
834
826
850
SCT_62
Team 5
816
Team 1
888
832
SWI_28
840
860
SWI_88
ECS 816
890 862
Team 7
Team 8 838
810
852
Team 4
SWI_52 828
Electronic Converter Storage Data Equipment RatedKV Rated ID A KV KVA KV ECS 816 750 24.9 ECS 860 1500 24.9
Stored KWH KWH 1000 1700
MaxK W KW 750 1500
830
854
856
Setpoint Power, KW
Power Factor, %
Tinc, sec
Tover, sec
Tshut, Cycles
500 1200
100 100
0.100 0.067
4.000 2.000
2 3
8
Simulation Results ECS 816 Output
ECS 860 Output
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