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Multivariate model optimisation during the implementation of flexible interconnection projects for MV distribution networks

Xing Su

Xing Su

State Grid Gansu Electric Power Company, Baiyin Power Supply CompanyBaiyin, China
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Su, Xing
, 
Qing Xu

Qing Xu

State Grid Gansu Electric Power Company, Baiyin Power Supply CompanyBaiyin, China
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Xu, Qing
, 
Libao Wei

Libao Wei

State Grid Gansu Electric Power Company, Baiyin Power Supply CompanyBaiyin, China
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Wei, Libao
, 
Shijin Xin

Shijin Xin

State Grid Gansu Electric Power Company, Baiyin Power Supply CompanyBaiyin, China
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Xin, Shijin
, 
Guojie Hao

Guojie Hao

State Grid Gansu Electric Power Company, Baiyin Power Supply CompanyBaiyin, China
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Hao, Guojie
 e 
Xiaofeng Wang

Xiaofeng Wang

State Grid Gansu Electric Power Company, Baiyin Power Supply CompanyBaiyin, China
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Wang, Xiaofeng
  
17 mar 2025
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Pubblicato online: 17 mar 2025
Ricevuto: 05 nov 2024
Accettato: 17 feb 2025
DOI: https://doi.org/10.2478/amns-2025-0186
Parole chiave
© 2025 Xing Su et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1.

The power supply zoning soft interconnection system
The power supply zoning soft interconnection system

Figure 2.

Basic structure of adaptive low-voltage anti-islanding strategy
Basic structure of adaptive low-voltage anti-islanding strategy

Figure 3.

Flexible interconnection substation system architecture
Flexible interconnection substation system architecture

Figure 4.

The structure of the D-UPFC
The structure of the D-UPFC

Figure 5.

Schematic diagram of the series converter
Schematic diagram of the series converter

Figure 6.

Contrast of current internal ring control impedance amplitude frequency
Contrast of current internal ring control impedance amplitude frequency

Figure 7.

Output voltage current waveform and voltage effective value waveform
Output voltage current waveform and voltage effective value waveform

Figure 8.

The voltage fluctuation of the voltage of the grid voltage load
The voltage fluctuation of the voltage of the grid voltage load

Figure 9.

Power unit dc bus voltage waveform
Power unit dc bus voltage waveform

Figure 10.

Contrast to grid improvements under different strategies
Contrast to grid improvements under different strategies

Figure 11.

The comparison effect of the Internet engineering application
The comparison effect of the Internet engineering application

The performance of different policies is the result of the comparison

Scheme Operating cost/CNY Voltage deviation/p.u. Total work loss/kWh
Initial system — 0.0870 4865.45
Scheme 1 1559.5 0.081 3332.0
Scheme 2 5543.8 0.0746 2897.3
Scheme 3 3696.1 0.0685 2655.2
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