APF/SVG relay state detection system
A detection system and relay technology, which is applied in circuit breaker testing, instrumentation, measuring electricity, etc., can solve problems that affect equipment compensation performance, damage IGBT modules, carbonization, etc., and achieve the effect of reducing failure rate and improving equipment safety
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[0023] like figure 1 , figure 2 As shown, the detection system of an APF / SVG relay state includes a charging module 2, an IGBT module 3, relay RLY-101 of an access grid 1, and relay RLY-101 connected to both ends of the charging module. Also included with the open circuit module 4 connected to the grid 1 for controlling whether the system is electrical network 1.
[0024] The LCL filter module 5 is connected between the open circuit module 4, between the charging module 2 for filtering harmonics;
[0025] The charging module 2 connects the bus voltage protection module 6 after connecting the IGBT module 3, and is used to charge the bus voltage protection module 6 when the detection system is activated, and avoids impact on the detection system;
[0026] The voltage sampling module 7 is connected to the charging module 2 for voltage conversion by voltage and voltage conversion;
[0027] The signal comparison module 8 is connected to the voltage sampling module 7, and after receiv...
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