Relay protection interval integrating device for intelligent substation

Abstract

The invention discloses a relay protection interval integrating device for an intelligent substation. The relay protection interval integrating device comprises a line protection module, a looped network bus protection module, a process layer module and a management CPU (Central Processing Unit) module, wherein information interaction and transmission are performed among the modules through an embedded HSB bus. Through adoption of the relay protection interval integrated device, the quantities of secondary equipment and screen cabinets are reduced greatly; secondary wiring and network configuration are simplified; the information acquisition reliability, instantaneity and information processing efficiency are improved; the information interaction capabilities of the functional modules in the substation are enhanced greatly; the engineering overhauling difficulty and running maintenance workload are lowered; in-place interval of cross-interval protection is realized; a technical basis is laid for primary equipment and the secondary equipment; and the whole framework of the intelligent substation is optimized.

Description

technical field [0001] The invention relates to an integrated relay protection interval device for an intelligent substation, which belongs to the technical field of electric power system automation. Background technique [0002] The traditional relay protection configuration takes the protection object as the unit, and each protection is independent of each other. Although the circuit is simplified, a lot of available information is actually wasted. The current smart substation protection configuration generally still takes the protection object as the unit, and follows the principle of three layers and two networks (three layers refer to: station control layer, interval layer, and process layer; two networks refer to: station control layer network and process layer network) Layered design. Among them, the independent configuration of process layer equipment and network realizes the whole station sharing of single-interval information, but it also brings many negative prob...

AI Technical Summary

Problems solved by technology

Among them, the independent configuration of process layer equipment and network realizes the whole station sharing of single-interval information, but it also brings many negative problems. There are a series of problems such as the increase in the number of large and secondary cables and optical cables, and complex wiring; on the other hand, because the process layer network information is based on the process layer equipment, more equipment will lead to an increase in the number of network nodes, resulting in a complex network structure and high transmission pressure , information loss and other issues are not conducive to the stable operation of substations

At the same time, the information interaction between single-bay protection and cross-bay protection largely depends on the network. When the network pressure is high, the "four properties" (selectivity, sensitivity, quickness, reliability) ) will likely not be guaranteed

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