IIAE CONFERENCE SYSTEM, The 5th IIAE International Conference on Industrial Application Engineering 2017 (ICIAE2017)

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Optimal Reactive Power for Voltage Stability in Distribution Systems Connected Wind Turbine Farm using Particle Swarm Optimization
Mongkol Treekijjanon, Suparat Srimongkol, Uthen Leeton, Boonruang Marungsri, Thanatchai Kulworawanichpong

Last modified: 2017-02-22


This paper illustrates optimal reactive power setting for voltage stability in power distribution system affected by wind turbine farm high terminal voltage using particle swarm optimization to inquire optimal solution. It involves the implementation of disturbance analyzing device to compare the result of setting reactive compensator.  In this research, to optimize the overall voltage limitation, three decision variables were considered, which are i)active/reactive power generated from wind turbine farm plants, ii) specified voltage magnitude and all node limitation and iii) power factor control. Particle swarm optimization (PSO) is well-known and widely accepted as a potential intelligent search method for solving optimization problems. “WA-YU” wind turbine farm project rated 8.0 MW, 22kV of Provincial Electricity Authority (PEA) in Nakhon Ratchasima, Thailand at feeder ten was employed as a case study. Results showed that PSO can search optimal reactive power to solve power flow problems efficiently related the best power factor. The voltage limitation was controlled in ±5% range of nominal voltage (22 kV) based on PEA’s regulation grid terms connected with a network of 2008. The controlled voltage provided a benefit which did not affect other power users connected in the same feeder circuit.


optimal reactive power flow, particle swarm optimization, wind turbine farm, overvoltage limitation.

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