Optimal Load Shedding to Prevent Voltage Collapse Considering the Priority of Feeders and Buses

Subject Areas : Electronics Engineering

Somayeh  Abdollahi Kakroudi ¹ (Department of Electrical Engineering, Gorgan Branch, Islamic Azad University, Gorgan, Iran)
Reza  Ebrahimi ² (Department of Electrical Engineering, Gorgan Branch, Islamic Azad University, Gorgan, Iran)
Ahmad  Ahmadi ³ (Department of Electrical Engineering, Nowshahr Branch, Islamic Azad University, Nowshahr, Iran)

Received: 2022-02-14 Accepted : 2022-04-09 Published : 2022-04-09

Keywords: priority of feeders, under voltage load shedding, optimal load shedding, Voltage Collapse, Voltage stability,

Abstract :

Today, power systems are operated close to their stability limits for economic reasons. On the other hand, with the occurrence of outage, the stability of the system has a problem that there are various solutions to compensate. The last and safest way to control and maintain system stability is load shedding. In this paper, under voltage load shedding is presented considering voltage dependent feeders load and also using the improved discrete particle swarm optimization algorithm (IDPSO). Since the load model is particular importance in the real load analysis, the decisions will be applied by considering voltage dependent load modeling. To ensure proper operation, the proposed method has been implemented using MATLAB software on the IEEE 30-bus test system by considering related constraints. For this purpose, two critical loads for the test system are considered and the results are examined. The results show that the proposed method provides the best location and amount of load shedding and indicates its effectiveness.

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