Integrating DERs on the Grid: Inverter Transient Overvoltage · SolarCity . SolarCity . SolarCity DC source DC filter AC ... SolarCity Subject: This is a presentation from the Integrating

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𝐺𝐿𝑅

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-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

0 0.005 0.01 0.015 0.02 0.025 0.03 0.035

Vo

ltag

e (

pe

r u

nit

)

Time (sec)

ttrip

t1 t3

t2

P

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EUTSimulated Area EPS

S1

RLC Load

S2

Transformer

>110% >120% >130% >140%0

0.5

1

1.5

2

2.5

3

3.5

4

Overvoltage Level (% Nominal)

Tota

l T

ime A

bove T

hre

shold

(m

s)

Power Factor

1.0

0.8 Leading

0.8 Lagging

Source: Draft Input for Voltage Regulation section in the IEEE 1547 Revision. (not published or final document).

Voltage &

Reactive

Power

System

Flexibility

Peak

Demand

Shaving

Contingency

Support

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