Anti-delay all-impedance relay and action method and device

• Main Authors: HAN AOYANG, LI CHEN, ZHAO HUILIANG, ZHANG BIN, WEN JIANCHUN, ZHONG SHIMIN, XU CHAO, LOU LIANG, LUO LUDONG, ZHUO ZHANFENG, LI FEI, WU XINGYUAN, WANG SHUCHUN, JIA YAJUN, DONG LIN, ZHOU SHENGQI, WANG CHAO, LIU XIANGSHENG, QI LUBO, LIU HUIQUN, YU LITAO
• Format: Patent
• Language: Chinese; English
• Published: 08.06.2016
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION

The invention discloses an action method and device of an anti-delay all-impedance relay and the anti-delay all-impedance relay. The method comprises the following steps: acquiring a measurement voltage (see the specification) and a measurement current (see the specification), and separately calculating a measurement impedance Zm and an action delay duration t; judging whether the condition that an absolute value of Zm is less than or equal to an absolute value of Zset is satisfied; and if the absolute value of Zm is less than or equal to the absolute value of Zset, delaying for t, and generating a signal for enabling the all-impedance relay to act. The method is simple in criterion and high in reliability; and when the fault is more severe, the action speed of the anti-delay all-impedance relay is higher, so that the damage of the severe fault on a power device is alleviated. 本发明公开了种反延时全阻抗继电器动作方法、装置及反延时全阻抗继电器，其中该方法包括如下步骤：获取测量电压和测量电流分别计算测量阻抗Z和动作延时时长t；判断|Z|≤|Z|是否成立；当|Z|≤|Z|时，延时t时长后生成使全阻抗继电器动作的信号。本发明的判据简单，可靠性高，