【摘要】 提出一种采用模拟乘法器和模拟积分器作为基本元件构成功率方向继电器的方案。从理论上对该方案进行了可行性研究 ,介绍了其构成方法和实验结果。该功率方向继电器的灵敏度很高 ,且在线路阻抗角位于区间 - 90°<φ<90°时为恒值 ,因此无需对其进行调整更多还原

【Abstract】 A project to design a power direction relay, which is based on an analog multiplier and an analog integrator, is presented in this paper. The feasibility analysis of this project is theoretically discussed, the structure of the introduced power direction relay is described and the test result is given. The possible application range of this power direction relay is discussed.更多还原