Modeling method and fault diagnosis method for network secondary loop of intelligent substation

Abstract

The invention discloses a modeling method for a network secondary loop of an intelligent substation. The modeling method comprises the steps of building a secondary equipment object model, a secondaryequipment board card object model, a secondary component object model and a secondary equipment container object model which are correlated to the network secondary loop of the intelligent substation; building a polymerization relation among the secondary equipment object model, the secondary equipment board card object model and the secondary component object model; building a communication medium object model; building a communication loop connection relate between the secondary equipment object model and the secondary component object model; and building an incidence relation between the secondary equipment object model and the secondary equipment container object model to obtain a network secondary loop model of the intelligent substation. By the modeling method, the standard level and the information level of operation and maintenance management of the secondary equipment and the network secondary loop of the intelligent substation and the precision level of operation and maintenance management of the secondary equipment are improved. Meanwhile, a fault diagnosis method is proposed, and the high application function such as fault diagnosis and positioning is achieved.

Description

technical field [0001] The invention relates to a modeling method and a fault diagnosis method for a networked secondary circuit of an intelligent substation, belonging to the application field of secondary operation and maintenance of an intelligent substation. Background technique [0002] With the further acceleration of the construction of smart substations in my country, the scale of intelligent secondary equipment in substations will also grow rapidly. Smart substation sampling network secondary loops replace traditional cable loops, which makes the number and importance of power secondary equipment in substations The normal and stable operation of the secondary equipment directly affects the safe and reliable operation of the primary system of the substation. Therefore, it is necessary to strengthen the status monitoring and operation and maintenance management of secondary equipment and networked secondary circuits in smart substations, realize the panoramic view of s...

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Problems solved by technology

IEC 61970 Common Information Model (CIM) provides protection package (Protection) in terms of secondary system modeling, but only includes the modeling of protection equipment object and relay object information model, related literature involves smart substation and other secondary equipment And the establishment of networked secondary circuit equipment objects and their circuit connection models is relatively lacking, which cannot support the needs of advanced applications such as status monitoring, operation and maintenance management, fault diagnosis and positioning of secondary equipment and networked secondary circuits in smart substations

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