overview of distribution network simulator at ems shinjuku ...€¦ · overview of distribution...

Overview of Distribution Network Simulatorat EMS Shinjuku R&D Center

Shinya YOSHIZAWAWaseda University

5th Annual International Workshop on Grid Simulator Testing of Energy Systems and Wind Turbine PowertrainsNovember 15-16, 2018 FSU Center for Advanced Power Systems

All rights reserved ©2018 Waseda University Hayashi Laboratory.

• Smart homes equipped with smart meters and appliances with communication function

• Demand Response Automated Servers (DRAS)

• Distribution Network

Overview of EMS Shinjuku R&D Center

Smart homes

Demand ResponseAutomation Server

Active network simulator with energy resources


2

Distribution Network Simulator: ANSWER


3

• Scale down in a laboratory environment (54kVA, 400V, 60A)• Designed to emulate various distribution system conditions

Distribution Network Simulator: ANSWER


4

Smart Inverters 3-5kVA capacity inverters 1.25kVA micro-inverter CA Rule21 functionalities are implemented

Distribution Network Simulator 100/200/400V nominal voltage levels 54kVA capacity, Max.60A current

Real-time simulator (dSPACE/RT-LAB)

Voltage regulation of tap changers, batteries, and reactive power devices

Measurement (voltage, current, power factor, phase, frequency, etc. )

DERMS: Parameters settings and monitoring for smart inverters and ANSWER status

Voltage regulators

ANSWER components

Voltage regulator

メインフレームGrid-EMScontroller

SVRMV-Line

LV-Line

Load/DER

Load/DER Load/DER

Freely selectand connect

OLTCMV-Line

MV-Line

LV-Line

Load/DER

LVRLVR


5Freely Construct Distribution Network and Test Developed Scheme

Freely Construct Distribution Network and Test Developed Scheme

Voltage regulator

メインフレームGrid-EMScontroller

MV-Line

LV-Line

Load/DERLoad/DER

OLTCMV-Line

MV-Line

Load/DER

LVR


6

SVR

Evaluation and Improvement of developed EMS

Visualization

MeasurementImplementation

Optimization

Activation

Grid-EMS methodology

Architecture of Smart Inverter Hardware Testbed

SI #1DERMS

All-in-one

OpenADR2.0b for SI Sunspec Modbus

SI #2

SI #3

SI #4

SI #5

HEMS

HEMS

Comm. terminal

Comm. terminal

Comm. terminal

Comm. terminal

Comm. terminal

Echonet Lite

Distribution system simulator

ANSWER

• Five smart inverters are installed and connected to distribution system simulator ANSWER and DERMS.


7

SI #1

SI #2

SI #3

SI #4

SI #5

Monitoring DER status and output

ANSWER measurement (Voltage, Current, Voltage regulator status)


8DERMS: Monitoring DER Status

DERMS: Monitoring DER Status

Frequency

Active power

Reactive power Power factor

Measurements

Voltage and current

Ride-through function

Connect

DER status and enabled functions

Fixed power factor


9

• Built a simple distribution system and tested LVRT function under several conditions

Low Voltage Ride-Through Testing: NW Topology


10

0.5 pu

DERMSSmart inverter settingUpdate parametersMonitoring DER status

Monitoring and operation

dSPACE/RT-LABANSWER settingsSolar irradiance

MV-Load3ph-8kW

AC200/400V 3φ54kVA, 50Hz

1φ3WAC400/200-100V

PV array

MV-Line MV-Line

MV-Load3ph-8kW

MV-Line

LV-Line

LV-LoadSmart Inverter

Distribution substation

0.7

0.8

0.9

1

1.1

0 20 40 60 80 100

Volta

ge (

pu)

Simulation time (s)

Voltage Sag Profile（RT-LAB）

Low Voltage Ride-Through Testing: Parameters Setting


11

Duration (sec)

Volta

ge (%

)50%

• LVRT refers only to the connect/disconnect behavior of the DER,essentially defining the voltage conditions under which the DER may and must connect and disconnect.

Low Voltage Ride-Through Testing: Results


12

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9Time [sec]

-150

-100

-50

0

50

100

150

Vol

tage

[V]

Terminal Voltage

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9Time [sec]

-10

-5

0

5

10

Cur

rent

[A]

Terminal Current

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9Time [sec]

-150

-100

-50

0

50

100

150

Vol

tage

[V]

Terminal Voltage

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9Time [sec]

-30

-25

-20

-15

-10

-5

0

5

10

15

20

25

30

Cur

rent

[A]

Terminal Current

70% of Voltage Sag30% of Voltage Sag

Remain connected Disconnected

Thank you for your attentionAny Questions?

Shinya YOSHIZAWAAssistant ProfessorWaseda [email protected]

This research is funded by the New Energy and Industrial Technology Development Organization(NEDO)

Acknowledgements

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