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, a detection system for the state of an APF / SVG relay in the present invention includes a charging module 2 connected to the power grid 1, an IGBT module 3, and a relay RLY-101. The relay RLY-101 is connected to both ends of the charging module 2. It also includes a circuit breaker module 4 connected to the grid 1, which is used to control and detect whether the grid 1 is powered on;
[0024] The LCL filtering module 5 is connected between the circuit breaking module 4 and the charging module 2, and is used for filtering out harmonics;
[0025] The charging module 2 is connected to the bus voltage protection module 6 after being connected to the IGBT module 3, and is used to charge the bus voltage protection module 6 when the detection system is started, so as to avoid impact on the detection system;
[0026] The voltage sampling module 7 is connected with the charging module 2, and is used for adopting the voltage across the resisto...
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