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发明公开
CN105811587A 带分合闸线圈保护的继电保护装置 无效 - 驳回

带分合闸线圈保护的继电保护装置
摘要：
本发明具体为一种带分合闸线圈保护的继电保护装置，解决了现有继电保护装置存在分合闸线圈易受损、烧毁影响电力系统正常运行的问题。霍尔直流电流传感器的输出端与数据处理器的输入端连接，数据处理器的输出端通过CAN总线与保护装置液晶屏、后台电脑、故障录波器的输入端连接，数据处理器的延时输出端与PWM驱动电路的输入端连接，PWM驱动电路的输出端与IGBT的栅极连接，IGBT的漏极与+15V电源端连接，IGBT的源极与继电器的线圈一端连接，继电器的线圈另一端与?15V电源端连接。本发明快速使分、合闸线圈断电，能够有效防止线圈损坏，保证电力系统的安全运行，而且可以记录每次分合闸过程中电流情况。
摘要（英）：

The invention particularly relates to a relay protection device with opening and closing coil protection.The problems that an opening and closing coil of an existing relay protection device is easy to damage, and normal operation of a power system is influenced by overburning are solved.The output end of a Hall direct-current sensor is connected with the input end of a data processor.The output end of the data processor is connected with the input end of a liquid crystal screen of the protection device, the input end of a background computer and the input end of a fault oscillograph through a CAN bus.The delay output end of the data processor is connected with the input end of a PWM driving circuit.The output end of the PWM driving circuit is connected with a grid electrode of an IGBT.A drain electrode of the IGBT is connected with a +15V power source end, a source electrode of the IGBT is connected with one end of a coil of a relay, and the other end of the coil of the relay is connected with a -15V power source end.The opening and closing coil is fast powered off, the coil can be effectively prevented from being damaged, safety operation of the power system is guaranteed, and the current condition in each opening and closing process can be recorded.

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