System for current relay characteristic virtual experiment and implementation method thereof

Abstract

The invention discloses a system for a current relay characteristic virtual experiment and an implementation method thereof, and the system comprises an equipment virtual module which simulates and generates virtual elements corresponding to all physical elements according to a current relay characteristic experiment schematic diagram, and provides the setting of the parameters of all virtual elements in a virtual circuit; an adjusting module, used for adjusting the virtual current magnitude or the relay parameter value of the virtual circuit and starting the condition achieving processing module to monitor the virtual current triggering condition so as to record a current action value and a return value; a current presentation module, used for acquiring and presenting the current of the virtual circuit in real time; a condition achievement processing module, used for monitoring whether a virtual current triggering condition is achieved or not, triggering the recording module when judging that the current of the virtual circuit reaches an action value or a return value, and executing the external performance of action or return of the real current relay; and a recording module, used for recording the action / return current value in the experiment process and analyzing the experiment data.

Description

technical field [0001] The invention relates to the technical field of electrical control and relay protection, in particular to a system for virtual experiments on characteristics of current relays and an implementation method thereof. Background technique [0002] When a fault or abnormal operation occurs in the power system, the normal operation of the system is destroyed, resulting in the suspension or reduction of power supply to the user, and sometimes even damage to the equipment. In order to prevent accidents or reduce the scope of accidents, improve the reliability of power system operation, and ensure the safe and continuous power supply to users to the greatest extent, special relay protection devices must be installed in the power system. [0003] The relay protection device must be able to correctly distinguish whether the protected element is in normal operation or in a fault state. To realize this function, the protection device needs to be constructed based o...

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Problems solved by technology

[0005] However, it is necessary to change the return coefficient when using the actual current relay for the characteristic experiment, and it is difficult to adjust the position of the tongue limiting screw, spring force, contact pressure, etc. of the actual relay, and frequent adjustments to the actual mechanism will easily reduce the accuracy of the equipment or even damage the equipment ; Moreover, the physical experiment of the characteristics of the current relay involves mains power and 220V DC, and measures need to be taken during the experiment to ensure the safety of the experimenters, and the physical experiment is not suitable for remote operation

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