Mitigation of fault related voltage swell on distribution feeders using DER-based advanced inverter controls

Thakar, Sushrut; Vittal, Vijay

doi:10.1109/pesgm48719.2022.9916858

Cited by 2 publications

(2 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For this feeder, the highly unbalanced fault current flowing through underground cables with mutual coupling and the effective phase/ground impedances at the fault location result in such a voltage swell. This aspect of voltage swell is discussed in [33]. As a result, within one cycle after the fault is applied, a large number of solar PV units trip for Phases A and C. This results in a loss of approximately 1099 kW generation for Phase A and 1314 kW generation for Phase C. It was previously discussed in [33] that even with the volt-VAr control the voltage profiles (and the loss of generation) remain very similar.…”

Section: A Unbalanced Fault On the Distribution Networkmentioning

confidence: 99%

“…This aspect of voltage swell is discussed in [33]. As a result, within one cycle after the fault is applied, a large number of solar PV units trip for Phases A and C. This results in a loss of approximately 1099 kW generation for Phase A and 1314 kW generation for Phase C. It was previously discussed in [33] that even with the volt-VAr control the voltage profiles (and the loss of generation) remain very similar. However, it should be noted that instead of inverter abnormal response Category I from IEEE 1547-2018, a more aggressive Category III implementation would result in the Phase A inverters remaining connected though the fault.…”

Section: A Unbalanced Fault On the Distribution Networkmentioning

confidence: 99%

See 1 more Smart Citation

The Impact of Detailed Distribution System Representation in Dynamic Sub-Transmission-Distribution Co-Simulation

Thakar

Vittal

Rojas³

2023

IEEE Open J. Power Energy

Self Cite

View full text Add to dashboard Cite

There has been a significant growth in the distributed energy resources (DERs) connected to the distribution networks in recent years, increasing the need for modeling the distribution networks in detail in conjunction with the sub-transmission/transmission networks. This paper models a real distribution/ sub-transmission network using a three-phase/three-sequence co-simulation. One of the modeled distribution feeders has a high penetration of DERs with significant reverse power flow and is modeled including the secondary network. Custom user-defined models are used to represent the solar photovoltaic (PV) units on the feeder including advanced controls and abnormal voltage responses from IEEE 1547-2018 standard. The co-simulation framework developed supports power flow/steady state as well as dynamic analysis. Using this developed framework, this paper studies the impact of balanced and unbalanced faults applied to the distribution and sub-transmission networks. The impacts of the faults on the feeder with the high penetration of DERs are studied in terms of the solar PV units tripping due to under/overvoltages and the resulting change in the feeder-head flow. It is seen that the detailed modeling of the distribution network is needed for accurately capturing the response from the distribution-connected DERs during fault events both on the distribution as well as sub-transmission networks.

show abstract

Section: A Unbalanced Fault On the Distribution Networkmentioning

confidence: 99%

Section: A Unbalanced Fault On the Distribution Networkmentioning

confidence: 99%