Work method of optical path switching interface mechanism used for test of relay protection device

Abstract

The invention relates to a work method of an optical path switching interface mechanism used for a test of a relay protection device. The power supply end of a control module of the optical path switching interface mechanism is connected with a control power supply, the input end of the control module is connected with a button switch, the output end of the control module is connected with a driving module, an optical switching module comprises two optomagnetic switches, four sending fiber interfaces and four receiving fiber interfaces, the output end of the driving module is respectively 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 sending fiber interfaces and the corresponding receiving fiber interface respectively. The control module provides controls signals of an optical path switching module which is correspondingly connected, so that the optical path switching interface mechanism can be connected with the relay protection device or an optical power meter or an optical attenuator, the driving module drives the optical path switching module to conduct multi-interface optical path switching, and the optical path switching interface mechanism can enter in a normal operation state and enter a test protecting and fiber channel test state.

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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