Failure detecting equipment of power communication transmission channel, failure detecting system and method

Abstract

The invention provides failure detecting equipment of a power communication transmission channel, a failure detecting system and a method. The equipment is characterized by comprising a transmitting end synchronous digital transmission device, an interference signal generating device and a receiving end synchronous digital transmission device, wherein the transmitting end synchronous digital transmission device is used for receiving state data transmitted by transmitting end protecting equipment and transmitting the state data into an optical fiber for transmission; the interference signal generating device is used for adding an interference signal into the state data; and the receiving end synchronous digital transmission device is used for receiving the state data transmitted from the optical fiber and transmitting the state data to receiving end protecting equipment for carrying out detecting processing. The embodiment of the invention adds simulating interference into the inward transmitted data of the transmission channel and can detect the performance of a relay protecting device in real time and execute alarm operation in time.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a fault detection device, a fault detection system and a method for a power communication transmission channel. Background technique [0002] With the development of communication technology in power communication systems, line protection using digital channels has begun to be widely used. The protection mainly includes longitudinal differential protection, longitudinal distance protection and longitudinal direction protection, among which longitudinal differential protection is the most widely used. The longitudinal differential protection has the advantages of high sensitivity, simple principle, reliable protection and quick action. [0003] However, with the extensive use of longitudinal current differential protection, there are more and more incorrect phenomena such as protection device alarms caused by abnormal conditions in digital channels. Existing equipmen...

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Problems solved by technology

[0003] However, with the extensive use of longitudinal current differential protection, there are more and more incorrect phenomena such as protection device alarms caused by abnormal conditions in digital channels. Existing equipment cannot test the performance of protection equipment well, such as TWM-1 Communication Error Code Generator, the disadvantages of this instrument are: it cannot replace the entire communication synchronous transmission system, there are fewer types of channel failures, and channels cannot be provided, and other channels must be used

The Datang Telecom channel detection platform cannot replace the entire communication synchronous transmission system, and must also rely on other channels

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