Intelligent transformer substation safety measure operation checking method based on signal simulation

Abstract

The invention discloses an intelligent transformer substation safety measure operation checking method based on signal simulation. The method comprises the steps: building an intelligent transformer substation protection principle model suitable for signal simulation based on a relay protection basic principle and safety measure operation characteristics, setting parameter values of related modules based on operation steps on a safety measure ticket to simulate a safety measure operation process, and finally operating simulation to complete safety measure operation verification, wherein the safety measure ticket is called a safety measure ticket for short. By means of the mode, each step of safety measure operation can be rehearsed, whether protection misoperation or misoperation locking occurs or not can be visually checked, the method can be applied to protection devices which are produced by different manufacturers and use different protection principles, and good reusability is achieved.

Description

technical field [0001] The invention relates to the technical field of safety measures applied to intelligent substations to prevent errors in operation, in particular to a method for checking the operation of safety measures in intelligent substations based on signal simulation. Background technique [0002] At this stage, smart substations have been widely used. Compared with traditional substations that communicate with primary and secondary equipment through cables, smart substations use optical fiber to transmit sampled value (SV) messages according to the IEC61850 standard. The event (GOOSE) message is used to communicate between the primary equipment and the secondary equipment of the substation. The corresponding relationship of virtual terminals replaces the connection of cables between traditional secondary equipment, and the connection between secondary equipment is realized by changing the switch state of the soft pressure plate. Therefore, the secondary safety m...

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Problems solved by technology

[0002] At this stage, smart substations have been widely used. Compared with traditional substations that communicate with primary and secondary equipment through cables, smart substations use optical fiber to transmit sampled value (SV) messages according to the IEC61850 standard. The event (GOOSE) message is used to communicate between the primary equipment and the secondary equipment of the substation. The corresponding relationship of virtual terminals replaces the connection of cables between traditional secondary equipment, and the connection between secondary equipment is realized by changing the switch state of the soft pressure plate. Therefore, the secondary safety measure operation (referred to as safety measure operation) is transformed into an operation combination of hard and soft pressure plates for maintenance. Since there is no entity, it is not intuitive, so it may cause misoperation by maintenance personnel , therefore, an intuitive method is needed to verify the correctness of the operation steps of the secondary safety measures of the smart substation, so as to avoid the occurrence of situations such as insufficient isolation and the risk of misoperation / rejection

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