A Study on the Development of Drum-Type Boiler Simulator for Thermal Power Plant Using the Signal Flow Diagram Model

신호흐름도 모델을 이용한 화력 발전소 드럼형 보일러 시뮬레이터의 개발에 관한 연구

Owing to the need to accommodate the load variation, thermal power plants need a modern controller in order to achieve better frequency regulation, faster response and higher efficiency. For a successful development of the digital instrumentation and control system that can adopt advanced control algorithms, power plant simulator must be available for safe and convenient test. In this paper, a simple drum-type boiler model is proposed using Signal Flow Diagram that describes the system by a combination of basic time responses representing the relationships between cause and effect process variables. After verifying the model and thereafter building a simulator based on the proposed model, we tested the operation of the controller and stability or efficiency of the implemented control algorithms.