A novel real-time hybrid simulator base on two personal computers and analog interfaces for data exchange

For power system simulation, the contradiction between the computational efficiency and the system scale as well as the detailed modeling comes into being. The electromagnetic/electromechanical hybrid simulation technology has been thereupon proposed. In this paper, a novel real-time hybrid simulator, which is based on two personal computers (PCs) and an analog communication device for data exchange between two PCs, is designed and built, and the key techniques are studied. For the unsolved essential difficulties in hybrid simulation technology, this paper initially studies the forecasting and correction method. The case studies not only indicate that the hybrid simulator is a success, but also testify to the practicability and necessity of the forecasting and correction method. All the achievements have paved the way for the forthcoming studies on the original hybrid simulator based on digital computers and real-time digital simulator (RTDS).