A novel method to determine the kind and rating of power quality solutions

This paper proposes a novel method on determining the kind and rating of power quality solutions. To determine the kind of solution, event cause and direction are utilized. According to the event cause and direction, adequate kind of solution is determined for effective compensation. To rate the required capacity of solution, the concept of lost energy is adopted. Lost voltage, lost power and lost energy are calculated and the rating of solution is determined to compensate specific event. The rating method which utilizes the result of stochastic diagnosis is also proposed. Power quality index such as CP95 is adopted for solution suggestion. The method developed in this paper is applied to the test system and proved to be useful for enhancing the power quality of customer system. It can provide the customers the information about what is a proper and cost-effective solution among various compensating devices.