Model test method and system for protection system test of large-scale camera transformer group

Abstract

The invention discloses a test method and system for a large-scale condenser transformer group protection test model, in which physical test parameters are input to a pre-built large-scale condenser relay protection physical test system model including a condenser test unit and primary and secondary equipment , output the operating conditions of the physical test of the condenser, and the test unit selects the test unit of the equivalent scale model according to the physical characteristics of the real machine of the condenser; input the simulation experiment parameters to the pre-built RTDS and combine it with the secondary equipment used in the actual project The model of the relay protection simulation test system of the large-scale condenser unit is used to output the operating conditions of the condenser simulation test. Advantages: The present invention uses the physical dynamic model and the physical characteristics of the real machine of the condenser to effectively scale the model, and establishes a physical test system covering the test unit and the large-scale condenser unit relay protection of the primary and secondary equipment; the RTDS can be used to simulate the condenser unit The actual parameters and the two test models complement each other to ensure the reliability of the test.

Description

technical field [0001] The invention relates to a test model test method and system for a large-scale condenser transformer group protection system, belonging to the technical field of electric power system relay protection. Background technique [0002] With the rapid development of UHV DC, the large-scale development of clean energy, and the concentration of a large proportion of power-receiving areas, the characteristics of the power grid have undergone major changes, and the dynamic reactive power reserves in some areas have declined and the problems of insufficient voltage support have become prominent. One of the main issues of security and stability. This objectively requires DC large-scale active power transmission to match large-scale dynamic reactive power, that is, "large DC power transmission and strong reactive power support". As the problem of "strong direct current and weak alternating current" in the power grid is becoming more and more prominent, the deploy...

AI Technical Summary

Problems solved by technology

In the prior art, commutation failure of the UHV DC weak sending end system will cause transient voltage rise and short-circuit capacity support problems, and cannot meet the requirements of the UHV multi-infeed receiving end system for fast reactive power adjustment and overload capacity of the regulator

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