不同制动判据差动保护的比率制动特性的测试方法

摘要

比率制动特性纵差保护作为电力系统中发电机、变压器等重要设备的主保护之一,其动作的可靠性对保证电力系统的安全运行至关重要,结合发电机纵差动保护和变压器纵差动保护的构成原理,提出了采用三路测试仪对两种常用的不同制动判据的纵差动保护比率制动特性的实用测试方法,实际应用表明该方法可靠、有效.%Percentage restraint differential protection features as a power system generators, transformers and other important equipment of the main protection for one of its actions to ensure the reliability of the safe operation of critical power systems. Combining generator and transformer differential protection constitute a principle of differential protection is proposed by using three-way test instrument on the two commonly used criteria of different brake braking characteristics of the ratio of longitudinal differential protection method for the practical test. And the practical application shows that the method is reliable and effective.