Relay-protection steady-state digital moving die test system

Abstract

A relay protection stable-state digital dynamic simulation test system comprises a graphic data memory module, a power network modeling module, a parameter setting module, a failure setting module, a failure data calculation module, a failure analysis module and a relay protection simulation module, wherein, the graphic data memory module is used to store the graphic model of various elements of a power system and various failure calculation models; the power network modeling module, according to the structure of the to-be-detected power network, is used to select elements and corresponding failure calculation model and form the power network topological structure of the failure calculation models; the parameter setting module is used to set the concrete parameters of each element of the established failure calculation models; the failure setting module is used to set the failure types and parameters of the failure calculation models; the failure data calculation module, according to the network topological structure of the power network, is used to calculate the parameter after failure occurs, i.e. the current of each subcircuit, the voltage of each busbar and the branching factors among subcircuits. The invention realizes real simulation of various failures in power system, thereby having strong practicability.

Description

technical field [0001] The invention belongs to a test system for relay protection of an electric power system, in particular to a steady-state digital dynamic model test system. Background technique [0002] The microcomputer relay protection tester is a test device for testing and calibrating various relays, protection devices and other equipment in the power system; the microcomputer relay protection tester sets the parameters of input current and voltage through man-machine dialogue Control the signal source to guide the electronic circuit, D / A conversion, power amplification, output multi-phase current and voltage source with a certain power to the relay protection device, and at the same time receive the feedback information from the relay protection device, make a series of responses, and record it. In order to achieve automatic test results, and print the results in text and graphics reports. [0003] The calculation model of the existing relay protection tester is ...

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Problems solved by technology

[0004] In order to overcome the shortcomings of existing relay protection testers that can only simulate simple faults, cannot simulate complex faults, and have poor practicability, th

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