A HEM-Based Sensitivity Analysis Method for Fast Voltage Stability Assessment in Distribution Power Network

Gao, Huimin; Jian-lin, Chen; Diao, Ruisheng; Zhang, Jing

doi:10.1109/access.2021.3051843

Cited by 11 publications

(7 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, the occurrence of voltage rise at PCC because of impacts of RDGs penetration levels can limit the amount and the extent at which RDG can be integrated into the power system. The above statement can be proved from the equation 13, which can be re-expressed in equation 16.…”

Section: Rdg Integration and Voltage Rise At Pccmentioning

confidence: 92%

“…Thus, the voltage drops as a result of the impedance of the feeder, the flow of the current, the load, the transformer and the source voltage define the voltage at the end of the feeder. If the amount of RDG integration into the Distribution network is remained unchanged, thus, equation 18 can be deduced from equation 16.…”

Section: Distribution Line Resistance Reductionmentioning

confidence: 99%

“…When the voltage of the PWMDSTATCOM exceeds the PCC voltage, the current across the inductor is slightly offset from the voltage V1 that provides a capacitive current, then (Qs) is negative and the PWMDSTATCOM produces a reactive power. When the voltage of the PWMDSTATCOM is equal to the voltage of the PCC the current through the inductor is nil and consequently there is no power exchange [16]. In the voltage regulation mode, if the reactive current remains within the minimum current values (-Imax, Imax) imposed by the nominal value of the converter, the voltage is controlled to the reference voltage Vref.…”

Section: Pwmdstatcom Dynamic Voltage (Small Signal)mentioning

confidence: 99%

“…Repeated switching of RDG systems on and off or complete disconnection of RDG from the grid and other methods suggested in [4][5][6][7][8][9][10][11][12][13][14] in response to voltage rise and the reverse power flow issues could only provide a temporary measure. Consequently, the resultant effects can impose consequent cycling of network voltage control equipment with associated asset life and maintenance impacts, can cause partial/total outages or excessive under voltages at the far end of the DN, damaging online power component, end-use equipment and voltage instability [15][16][17]. Hence, permanent solution is required.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Analysis of Voltage Rise Phenomena in Electrical Power Network With High Concentration of Renewable Distributed Generations

Akinyemi

Musasa

Davidson

2022

Preprint

View full text Add to dashboard Cite

The increasing penetration levels of Renewable Distributed Generation (RDG) into power system have proven to bring both positive and negative impacts. The occurrence of under voltage at the far end of a conventional Distribution Network (DN) may not raise concern anymore with RDGs integration into the power system. However, a high penetration of RDG into power system may cause problems such as voltage rise or over-voltage and reverse power flows at the Point of Common Coupling (PCC) between RDG and DN. This research paper presents the voltage rise and reverse power flow effects in power system with high concentration of RDG. The analysis is conducted on a sample DN, i.e., IEEE 13-bus test system, with RDG by considering the most critical scenario such as low power demand and peak power injection to DN from RDG. The Simulations are carried out using MATLAB/Simulink software, a mathematical model of a distribution grid, integrating RDG is developed for studying the effects of voltage rise and bidirectional flow of power. Furthermore, a control strategy is proposed to be installed at PCC of the DN to control/or mitigate the voltage rise effects and to limit the reverse power flow when operating in a worst critical scenario of minimum load and maximum generation from RDG. The proposed control strategy also mitigates the voltage-current harmonic signals, improve the power factor, and voltage stability at PCC. Finally, recommendations are provided for the utility and independent power producer to counteract the effects of voltage rise at PCC. The study demonstrated that, PCC voltage can be sustained with a high concentration of RDG during a worst-case scenario without a reverse power flow and voltage rise beyond grid code limits.

show abstract

Section: Rdg Integration and Voltage Rise At Pccmentioning

confidence: 92%

Section: Distribution Line Resistance Reductionmentioning

confidence: 99%

Section: Pwmdstatcom Dynamic Voltage (Small Signal)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analysis of Voltage Rise Phenomena in Electrical Power Network With High Concentration of Renewable Distributed Generations

Akinyemi

Musasa

Davidson

2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Recently, the HEM has been gradually attached to scholars and applied to the field of power system voltage stability analysis (Singh and Tiwari, 2020;Gao et al, 2021;Lai et al, 2022). The calculation of voltage collapse points using HEM has a significant advantage over the continuous power flow since the method requires only one calculation to obtain the results (Yang, 2015;Du et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Hosting capacity of distributed generation based on holomorphic embedding method in distribution networks

Xie

Tang²,

Qi³

et al. 2023

Front. Energy Res.

View full text Add to dashboard Cite

Considering the voltage rise problem caused by integrating large-scale distributed generation into the distribution networks, a distributed generation hosting capacity assessment method based on the improved holomorphic embedding method is proposed. First, the relationship between distributed generator penetration and voltage at the access point is explored and voltage violation is used as a constraint to solve the hosting capacity. Secondly, a self-defined directional holomorphic embedding method is proposed based on the classical model, further, the safety region under voltage constraints is derived. The intersection of the bus trajectory with the boundary of the voltage constraint region is used as the criterion for judging the maximum hosting capacity of distributed generation under a single access scenario. Then, a sufficient number of distributed generation access scenarios are generated using Monte Carlo, and the proposed criterion is used to solve the hosting capacity under each scenario. The cumulative distribution curve is obtained by statistically solving admission capacity data, which can represent the relationship between the level of voltage violation risk and the hosting capacity of distributed generation. The validity and correctness of the proposed method are verified on the IEEE 22-bus distribution network.

show abstract

Optimal allocation of distributed generation in active distribution power network considering HELM-based stability index

Gao,

Diao,

Zhong

et al. 2024

International Journal of Electrical Power & Energy Systems

View full text Add to dashboard Cite

A HEM-Based Sensitivity Analysis Method for Fast Voltage Stability Assessment in Distribution Power Network

Cited by 11 publications

References 19 publications

Analysis of Voltage Rise Phenomena in Electrical Power Network With High Concentration of Renewable Distributed Generations

Analysis of Voltage Rise Phenomena in Electrical Power Network With High Concentration of Renewable Distributed Generations

Hosting capacity of distributed generation based on holomorphic embedding method in distribution networks

Optimal allocation of distributed generation in active distribution power network considering HELM-based stability index

Contact Info

Product

Resources

About