Relay protection signal loop optimal configuration method based on optical fiber interface device

Abstract

The invention discloses a relay protection signal loop optimal configuration method based on an optical fiber interface device, which greatly reduces the probability of major faults caused by mistaken signal transceiving of the optical fiber interface device, and can improve the power supply reliability of a power grid and the economic benefits of power enterprises. Technicians can adjust the range of major faults according to actual needs so as to achieve different strategic targets. The method comprises the following steps: S1, preliminarily configuring a relay protection signal loop transmitted by each optical fiber interface device; s2, analyzing whether a major fault is caused due to the fact that a single optical fiber interface device transmits and receives signals by mistake or not; s3, if not, ending the work, and otherwise, executing the step S4; s4, carrying out optimal configuration on all relay protection signal loops; and S5, after one round of optimization configuration is carried out on all relay protection signal loops each time, the steps S2, S3 and S4 are repeated until the work is finished.

Description

technical field [0001] The invention relates to the field of electric power system relay protection, in particular to a method for optimal configuration of a relay protection signal circuit based on an optical fiber interface device. Background technique [0002] Optical fiber communication has many advantages such as high information transmission rate, fast transmission speed, stable transmission, and little influence by weather and temperature, so it has been widely used in people's daily production and life. In the field of power system relay protection, optical fiber communication is mainly used to transmit relay protection signals. Two optical fiber interface devices that are far away and the optical fibers connecting them together form a set of optical fiber interface devices. First, one of the optical fiber interface devices converts electrical signals into optical signals, and transmits them to the other optical fiber interface device through optical fibers. Then th...

AI Technical Summary

Problems solved by technology

If the signal sent and received by the optical fiber interface device is a signal to trip the circuit breaker, it may cause the trip of the grid-connected circuit breaker of the generator set, the trip of the circuit breakers on the high and low voltage sides of the transformer, and the trip of the circuit breakers connected to the busbar, etc. As a result, major faults such as disconnection of the generator set from the grid, loss of power of the transformer, loss of power of the busbar, etc., affect the production, transmission, distribution and use of electric energy, and reduce the reliability of power supply of the grid and the economic benefits of power companies

[0004] At present, there is no method that can fundamentally prevent the optical fiber interface device from sending and receiving signals by mistake, and there is no method that can completely prevent the optical fiber interface device from sending and receiving signals by mistake, causing the generator set to disconnect from the grid, the transformer to lose power, and the bus to lose power and other major failures

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