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Distribution System Analysis with UPQC Allocation Considering Voltage Dependent Time-Variant and Invariant Loads including Load Growth Scenario


The distribution systems provide the key link between the power utility and the consumers. For the better operation and planning of the electrical distribution systems, it is essential to analyze the behavior of the network with different nature of loads, its growth and new upcoming D-FACTS devices. In the present work, the authors analyzed distribution system in the presence of UPQC as Distribution FACTS device. The main highlights of the paper are: (i) analysis of distribution system with UPQC, (ii) reduction in the losses of the network and improvement in the voltage profile, (iii) impact of load models and load growth on the performance of system, and (iv) savings in cost of energy loss. The analysis is carried out on IEEE-33 bus radial distribution network with time-varying load and UPQC.

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Constant power


Flexible AC transmission systems


Load flow analysis


Radial distribution network


Rate of under-voltage mitigated nodes


Single line diagram


Total active power loss


Total active power supplied


Total reactive power loss


Total reactive power supplied


Unified power quality conditioner


Voltage source converter


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Singh, M.K., Kumar, A. & Gupta, A.R. Distribution System Analysis with UPQC Allocation Considering Voltage Dependent Time-Variant and Invariant Loads including Load Growth Scenario. J. Inst. Eng. India Ser. B 103, 791–807 (2022).

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  • Distribution system
  • UPQC
  • Time-variant and invariant loads
  • Load growth
  • Rate of under-voltage mitigated nodes