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What is Voltage Stability

Chapter 1
Handbook of Research on Power and Energy System Optimization
Voltage stability refers to the ability of a power system to maintain steady voltage at all buses in the system after being subjected to a disturbance from a given initial operating condition.
Published in Chapter:
Fuzzy-Logic-Based Reactive Power and Voltage Control in Grid-Connected Wind Farms to Improve Steady State Voltage Stability
Tukaram Moger (National Institute of Technology Karnataka, India) and Thukaram Dhadbanjan (Indian Institute of Science Bangalore, India)
Copyright: © 2018 |Pages: 54
DOI: 10.4018/978-1-5225-3935-3.ch001
Abstract
This chapter presents a fuzzy logic approach for reactive power and voltage control in grid-connected wind farms with different types of wind generator units to improve steady state voltage stability of power systems. The load buses' voltage deviation is minimized by changing the reactive power controllers according to their sensitivity using fuzzy set theory. The proposed approach uses only a few high sensitivity controllers to achieve the desired objectives. A 297-bus-equivalent grid-connected wind system and a 417-bus-equivalent grid-connected wind system are considered to present the simulation results. To prove the effectiveness of the proposed approach, a comparative analysis is also carried out with the conventional linear-programming-based reactive power optimization technique. Results demonstrated that the proposed approach is more effective in improving the system performance as compared with the conventional existing techniques.
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Chapter 21
Optimal Placement and Sizing of Distributed Generation in Distribution System Using Modified Particle Swarm Optimization Algorithm: Swarm-Intelligence-Based Distributed Generation
Voltage stability is referred as the ability of power system to maintain the steady voltage across all nodes of the power system, after being subject to disturbances from its initial points. Voltage stability can be observed in transmission as well as in distribution system. It actually assures the electric operator that a required electric power is being drawn to meet the load requirement. The main causes of voltage instability are increasing power demand, which reduces the voltage profile and reactive power requirement, which eventually causes the voltage stability.
Published in Chapter: Optimal Placement and Sizing of Distributed Generation in Distribution System Using Modified Particle Swarm Optimization Algorithm: Swarm-Intelligence-Based Distributed Generation; From: Handbook of Research on Emergent Applications of Optimization Algorithms
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Chapter 7
Reactive Power Loss Index for Identification of Weak Nodes and Reactive Compensation Analysis to Improve Steady State Voltage Stability
Voltage stability refers to the ability of a power system to maintain steady voltage at all buses in the system after being subjected to a disturbance from a given initial operating condition.
Published in Chapter: Reactive Power Loss Index for Identification of Weak Nodes and Reactive Compensation Analysis to Improve Steady State Voltage Stability; From: Novel Advancements in Electrical Power Planning and Performance
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Chapter 2
Enrichment of Distribution System Stability Through Artificial Bee Colony Algorithm and Artificial Neural Network
It refer to the ability of power system to maintain steady state voltages at all buses in the power system after subjected to a faults from a given initial operating point.
Published in Chapter: Enrichment of Distribution System Stability Through Artificial Bee Colony Algorithm and Artificial Neural Network; From: Handbook of Research on Smart Power System Operation and Control
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