An equipment state-aware 110kv line protection system and its implementation method

Abstract

The invention discloses an equipment state sensing type 110kV line protection system and an implementation method. The equipment state sensing type 110kV line protection system comprises a relay protection function module, a circuit breaker online monitoring module, a comprehensive analysis function module and a double-power supply switching module; and the relay protection function module is separately connected with a merging unit, an intelligent terminal and a process layer switch via optical cables to form a relay protection device secondary loop. The equipment state sensing type 110kV line protection system constructs an active defense type 110kV line security protection system so as to integrate equipment state sensing, accident pre-warning and relay protection of the 110kV line, which not only reduces the faults of the relay, but also quickly removes the faults, reduces the investment and operation and maintenance costs of intelligent substation equipment and protects the robustness of the grid in real time, and if the relay protection device can increase the active defense alarm function of the equipment state sensing, the principles of relay protection can be optimized, the occurrence of faults is reduced, the faults are quickly removed, and the investment and operation and maintenance costs of intelligent substation equipment can be reduced.

Description

technical field [0001] The invention relates to the technical field of relay protection for intelligent substations, in particular to an equipment state-aware 110kV line protection system and an implementation method. Background technique [0002] At present, the rapid and accurate removal of faulty components by relay protection devices can only reduce the damage caused by faults but cannot reduce the occurrence of faults. It is a passive defense method. With the rapid development of power primary equipment status detection technology, when the primary equipment is sub-healthy, an alarm signal is sent to realize maintenance without power failure, which can reduce the number of power outages caused by equipment failure. This is a positive defense method. [0003] The existing relay protection device and primary equipment status monitoring device are independently configured according to different functions. This mode has high reliability. When any device fails, it will not a...

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Problems solved by technology

[0006] The above two invention patents both provide technical solutions for circuit breaker status monitoring, but they are all independent monitoring, and neither considers the mutual cooperation between status monitoring and relay protection. Functionally, the two are independent of line relay protection. configuration, in terms of equipment investment, it is still necessary to invest separately in the relay protection device and the circuit breaker state monitoring device, the overall investment cost is relatively large, and the operation and maintenance cost is relatively high; in terms of relay protection performance, the data collected by state monitoring is not used Complementary relay protection performance, repeated hardware configuration, complicated wiring, insufficient information sharing, lack of coordination and function optimization at the system level of the whole station

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