Comparison of CVR impact on transmission system load margin with aggregated and de-aggregated distribution system

Bharati, Alok Kumar; Singhal, Ankit; Ajjarapu, Venkataramana; Wang, Zhaoyu

doi:10.1109/naps.2017.8107284

Cited by 4 publications

(3 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There is one paper that reports that CVR improves the voltage stability of the system [9], but it does not consider any distribution system model in this study. Our previous work published in reference [10] on CVR impact on VSM with aggregated and de-aggregated load shows that for the aggregated load case, i.e., only with transmission system analysis, CVR increases load margin by 1.835% (similar to [9]) whereas, for the same with de-aggregated load, the increase in margin due to CVR is reduced to 0.399%. Reference [10] suggests using T&D co-simulation to accurately understand the true impact of CVR on VSM.…”

Section: B Cvr and Long-term Voltage Stabilitymentioning

confidence: 93%

Investigation of Relevant Distribution System Representation With DG for Voltage Stability Margin Assessment

Bharati

Ajjarapu

2020

IEEE Trans. Power Syst.

Self Cite

View full text Add to dashboard Cite

This paper analyses the impact of conservation by voltage reduction (CVR) on voltage stability margin (VSM) considering transmission and distribution (T&D) systems. VSM is determined by P-V curve analysis using PSSE and GridLAB-D solvers to co-simulate the T&D systems under CVR and No CVR conditions. ZIP loads with profile [ZIP] = [0.4 0.3 0.3] are used to model the load. The paper discusses the counterintuitive result:under CVR, the VSM is reduced. Theoretical justification for the reduced VSM under CVR is the increase in the effective impedance between generation and load and this is proved using an extended 2-bus system. The paper shares T&D co-simulation results with IEEE 9-bus transmission system and a larger 123-bus distribution system and with distributed generation (DG) in unity power factor (UPF) and volt-VAR control (VVC) mode.

show abstract

Section: B Cvr and Long-term Voltage Stabilitymentioning

confidence: 93%

Investigation of Relevant Distribution System Representation With DG for Voltage Stability Margin Assessment

Bharati

Ajjarapu

2020

IEEE Trans. Power Syst.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Power CVR is the total power consumption after the CVR execution. The CVR savings achieved based on (23) in distribution feeders will be aggregated and its impact of ATC is further analysed using ITD platform.…”

Section: Cvrmentioning

confidence: 99%

“…It is worth mentioning that very few has demonstrated the impact of CVR in the transmission system. The authors of [23] have studied the CVR effect on voltage stability of the transmission system and the study reveals that voltage stability margin can be increased with the integrated operation of CVR. Motivated from the impact of CVR in voltage stability, in this study the effect of CVR on ATC has been addressed.…”

Section: Atc and Cvr: A Brief Overviewmentioning

confidence: 99%

ATC assessment and enhancement of integrated transmission and distribution system considering the impact of active distribution network

Shukla

Singh

Thakur

et al. 2020

IET Renewable Power Generation

View full text Add to dashboard Cite

Assessment and enhancement of transmission network capability have been one of the prime interests of power system monitoring, operation and control. Conventionally, the issue of available transfer capability (ATC) assessment has been tackled considering the transmission and distribution networks as segregated entities because they had little or no influence on each other's performance owing to the unidirectional flow of power from the transmission to distribution networks. Now, with increasing interest in smart transmission and distribution in amalgamation with a paradigm shift in sources of generation from centralised to decentralised even at distribution levels mandating the analysis of power grid while inculcating both the hierarchies simultaneously. In this study, a platform for quasi-static operation of power transmission and distribution networks, employing a multi-agent based system has been developed. The developed multi-agent systembased system has been utilised for assessment of ATC considering active distribution network (ADN) whereby Modified IEEE 24 bus system at transmission and Modified IEEE 123 node system at distribution level has been considered as a test system. It has been observed that the presence of ADN considerably affects the ATC of the system. DN , Y q, t D N conductance, susceptance and admittance of feeder qin p.u. g i j, t , b i j, t conductance and susceptance matrix between nodes i and j of feeder q Q i, t cb , β i, t cb capacitor bank (CB) capacity, integer value for capacitor bank unit Δq i, t cb VAR value of each capacitor in CB γ tr, t , off-nominal turn ratio of OLTC and voltage regulator ΔV tr, t voltage change for tap position. t,T time interval, last time interval

show abstract

Reduction in System Losses and Power Demand by Combination of Optimal Power Flow and Conservation Voltage Reduction Using Smart PV Inverters

Mahendru

Varma

2019

2019 IEEE Power &Amp; Energy Society General Meeting (PESGM)

View full text Add to dashboard Cite

Comparison of CVR impact on transmission system load margin with aggregated and de-aggregated distribution system

Cited by 4 publications

References 9 publications

Investigation of Relevant Distribution System Representation With DG for Voltage Stability Margin Assessment

Investigation of Relevant Distribution System Representation With DG for Voltage Stability Margin Assessment

ATC assessment and enhancement of integrated transmission and distribution system considering the impact of active distribution network

Reduction in System Losses and Power Demand by Combination of Optimal Power Flow and Conservation Voltage Reduction Using Smart PV Inverters

Contact Info

Product

Resources

About