Working method of optical path switching interface mechanism for optical fiber channel test of relay protection device

Abstract

The invention relates to a working method of an optical path switching interface mechanism for an optical fiber channel test of a relay protection device. According to the optical path switching interface mechanism, the power source end of a control module is connected with a control power source, the input end of the control module is connected with a button change-over switch, and the output end of the control module is connected with a driver module; an optical path switching module comprises two optomagnetic switches, four transmitting optical fiber interfaces and four receiving optical fiber interfaces, wherein the output end of the driver module is connected with the control ends of the two optomagnetic switches, and the input ends and the output ends of the two optomagnetic switches are connected with the corresponding transmitting optical fiber interfaces and the corresponding receiving optical fiber interfaces. The control module provides a control signal corresponding to the connected optical path switching module, a test instrument can be connected with the relay protection device or an optical power meter or an optical attenuator through the optical path switching interface mechanism, then the driver module drives the optical path switching module to carry out optical path switching of the interfaces, and therefore the normal running state and the testing state of a protection test and the optical fiber channel test can be achieved.

Description

[0001] This application is a divisional application of the invention patent application with the application number: 201010502186.2, the invention name is "Switching Optical Path Interface Mechanism for Optical Fiber Channel Test of Relay Protection Device", and the application date is: September 29, 2010. technical field [0002] The invention relates to a working method of a switching optical path interface mechanism for an optical fiber channel test of a relay protection device, and belongs to the technical field of relay protection devices. Background technique [0003] The secondary equipment in the power system is used to monitor, control, adjust, protect the work of the primary equipment, and provide low-voltage electrical equipment required for operating conditions or production command signals for operation and maintenance personnel, and the relay protection mechanism is an important power system secondary circuit equipment. With the gradual promotion of smart subst...

AI Technical Summary

Problems solved by technology

The protection of 220kV and above fiber optic channels requires frequent installation and removal of the optical cable connector from the relay protection device during the protection verification test and measurement of optical power, so it is easy to cause the wear of the optical cable interface and the increase in the attenuation of the optical interface contact surface , thereby affecting the accuracy of the relay protection device calibration, and even damage to the optical cable interface will bring hidden dangers to the safe and reliable operation of the main protection of the power line

[0004] At present, the optical fiber protection devices at home and abroad do not have a standard and perfect verification process for the verification of the protection device in the field, especially the verification of the fiber channel.

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