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

Abstract

The invention relates to an optical path switching interface mechanism used for a fiber channel test of a relay protection device. The power supply end of a control module 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 path 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, two input ends of the first optomagnetic switch K1 are connected with the first sending fiber interface TX1 and the third sending fiber interface TX3 respectively, two output ends of the first optomagnetic switch K1 are connected with the second sending fiber interface TX2 and the fourth sending fiber interface TX4 respectively, two input ends of the second optomagnetic switch K2 are connected with the second receiving fiber interface RX2 and the third receiving fiber interface RX3 respectively, and two output ends of the second optomagnetic switch K2 are connected with the first receiving fiber interface RX1 and the fourth receiving fiber interface RX3 respectively. A hood panel is further provided with a state indicator lamp and a fiber interface indicator lamp set which are connected with the output end of the control module.

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 switching optical path interface mechanism for an optical fiber channel test of a relay protection device, belonging 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 substations and smart grids...

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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