Detection method and detection system of intelligent relay protection device

Abstract

The invention provides a detection method and a detection system of an intelligent relay protection device. Aiming at the situation that compared with the prior art, dynamic properties of the relay protection device cannot be detected effectively in an intelligent substation spot, and starting from the feature of sharing of digitalization and informatization of an intelligent substation secondary system, the detection method which regards a digit simulation system as a data source and regards synchronous working of a plurality of digitized relay protection testers is provided and the detection system of the intelligent relay protection device is constructed. Various operating situations which probably happen in a transformer substation can be simulated according to an actual electric topological structure of an intelligent substation and device parameters construction and simulation models in a lab, simulating calculation can be conducted, transient test data which have higher similarity with the actual operating situations can be achieved by transforming, the transient test data can be output in the intelligent substation spot in a playback mode, and detection of the dynamic properties of the relay protection device and checkout work of protection definite value can be carried out.

Description

technical field [0001] The invention relates to the technical field of digital-analog hybrid simulation test and intelligent substation test, in particular to a detection method and system for an intelligent relay protection device. Background technique [0002] The construction of smart grid has become a national development strategy, and it is imperative for smart substations to gradually replace traditional substation integrated automation substations; at present, smart substations have entered the stage of promotion and application. Compared with the traditional substation, the structure of the secondary equipment of the smart substation and the information transmission method between the equipment have undergone great changes, resulting in corresponding changes in the detection technology of the intelligent secondary equipment. There are three main detection methods and systems for existing intelligent relay protection devices, as follows: [0003] 1. Digital relay pro...

AI Technical Summary

Problems solved by technology

The method and system can build a simulation model according to the electrical topology structure and equipment parameters of the smart substation, simulate various operating conditions that may occur on the substation site, perform simulation calculations and convert them to obtain transient test data with a high degree of similarity to the actual operating conditions , carry out the dynamic performance detection of the relay protection device and the verification of the protection fixed value in the smart substation site, this method and system solve the defects existing in the current detection method

Images