Capacitor abnormity detection system and working method thereof
A technology of abnormal detection and working method, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve problems such as complex methods, and achieve the effect of improving fault tolerance and reliability.
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Embodiment 1
[0031] like figure 1 and figure 2 As shown, a capacitance anomaly detection system of the present invention, the capacitance anomaly detection system is suitable for a topological circuit in which two or more capacitors are connected in series as bus support capacitors; the capacitance anomaly detection system includes: a DC bus acquisition unit for acquisition The voltage at both ends of the bus bar; the capacitor voltage acquisition unit is used to collect the voltage value at one end of the corresponding capacitor between the first and last capacitors in the topology circuit; the DC bus acquisition unit and the capacitor voltage acquisition unit are respectively connected to a computing unit, the The calculation unit is adapted to calculate the judging voltage value suitable for judging any abnormality of any bus support capacitor according to the corresponding voltage values obtained from the DC bus acquisition unit and the capacitor voltage acquisition unit.
[0032] ...
Embodiment 2
[0045] like Figure 1 to Figure 5 As shown, on the basis of Embodiment 1, the present invention also provides a working method of a capacitance anomaly detection system, and the capacitance anomaly detection system is applicable to a topological circuit in which two or more capacitors are connected in series as bus support capacitors; the working method Including the following steps:
[0046] Step S1, collecting the voltage at both ends of the bus;
[0047] Step S2, collecting the voltage value at one end of the corresponding capacitor located between the first and last capacitors in the topology circuit;
[0048] Step S3 , calculating a judging voltage suitable for judging any abnormality of any bus support capacitor according to the corresponding voltage values obtained from the DC bus acquisition unit and the capacitor voltage acquisition unit.
[0049] Further, the voltage at both ends of the bus is collected by the DC bus acquisition unit; the DC bus acquisition unit ...
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