Breaker simulating device used for replacing real high-voltage breaker in protecting testing process

Abstract

The invention discloses a breaker simulating device used for replacing a real high-voltage breaker in the protecting testing process. The breaker simulating device comprises a breaker circuit which comprises a plurality of breaker circuit bodies identical in circuit structure and a plurality of extension relay circuits identical in circuit structure. A breaker protecting switching-on switch is connected into a closing coil and a controller switching-on opening loop. The closing coil and the controller switching-on opening loop are connected in parallel. A breaker protecting trip switch is connected into a tripping coil and a controller tripping opening loop. The tripping coil and the controller tripping opening loop are connected in parallel. One relay is adopted in each extension relay circuit to serve as contact extension, and each extension relay circuit is used for simulating an auxiliary switch contact of the breaker to be opened at the switching-on and switching-off position. The switching-on and switching-off time of the sixth simulated breaker can be set according to needs, and the precision of the switching-on and switching-off time of the simulated breaker is high.

Description

technical field [0001] The invention relates to a simulation device capable of simulating the state of a high-voltage circuit breaker, in particular to a circuit breaker simulation device capable of replacing a real high-voltage circuit breaker in protection tests. Background technique [0002] Due to the large number of test items in the current relay protection test, the circuit breaker needs to be opened and closed frequently, which will affect the service life of the circuit breaker. In the transformation and new construction of substations, when the protection device has been installed and the high-voltage circuit breaker is not installed due to supply and other reasons, it will affect the progress of the protection test and the progress of the entire project. [0003] After the automatic switching device of the incoming line of the substation and the automatic switching device of the main transformer and the backup are put into operation, the protection test of automat...

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Problems solved by technology

[0008] In order to solve the deficiencies in the prior art, the present invention discloses a circuit breaker simulation device used in the protection test to replace the real high-voltage circuit breaker. Influenced by the status quo, solve the problem that the protection device cannot be tested because the high-voltage circuit breaker is not installed, solve the problem that the whole group of protection tests for the substation equipment automatic switching device cannot be guaranteed without power failure, and solve the existing circuit breaker simulation device The functions are not comprehensive enough, and the simulation effect is not good enough

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