Comparison of Fault Currents in AC & DC Microgrids Mahdi - - PowerPoint PPT Presentation

β–Ά
comparison of fault currents in ac dc microgrids
SMART_READER_LITE
LIVE PREVIEW

Comparison of Fault Currents in AC & DC Microgrids Mahdi - - PowerPoint PPT Presentation

Aug 28, 2023 659 likes β€’786 views

Comparison of Fault Currents in AC & DC Microgrids Mahdi Izadkhast Learning Objectives How is the fault current calculated in an AC microgrid? Which elements are contributing to the DC fault current of a DC microgrid?

slide-1
SLIDE 1

Comparison of Fault Currents in AC & DC Microgrids

Mahdi Izadkhast

slide-2
SLIDE 2

Learning Objectives

  • How is the fault current

calculated in an AC microgrid?

  • Which elements are

contributing to the DC fault current of a DC microgrid?

  • What are the differences of the

fault currents in AC and DC microgrids?

slide-3
SLIDE 3

AC Fault Current

π‘Š = 𝑆𝑗𝑔 + 𝑀 𝑒𝑗𝑔 𝑒𝑒

π‘Š

π‘Ž = 𝑆2 + πœ•π‘€ 2 πœ„ = tanβˆ’1 πœ•π‘€ 𝑆 π‘ˆ = 𝑀 𝑆 π‘Š = π‘Š

𝑛 βˆ™ sin(πœ•π‘’ + 𝛽)

slide-4
SLIDE 4

AC Fault Current

𝑗𝑔 = π‘Š

𝑛

π‘Ž sin(πœ•π‘’ + 𝛽 βˆ’ πœ„) βˆ’ π‘“βˆ’π‘’

π‘ˆsin(𝛽 βˆ’ πœ„)

slide-5
SLIDE 5

Fault on DC Link

slide-6
SLIDE 6

DC Fault Current by AC Grid

slide-7
SLIDE 7

DC Fault Current by Capacitor

slide-8
SLIDE 8

DC Fault Current by Inductor

slide-9
SLIDE 9

Overall DC Fault Current 𝑗𝑔,𝑒𝑑 = 𝐽𝐻 + 𝐽𝐷 + 𝐽𝑀

slide-10
SLIDE 10

Summary