Capacitor technical knowledge, principles and fundamentals
1 Paper dielectric capacitor The dielectric constant of capacitor paper is about 2.2. Since it is made of plant cellulose, it is porous and generally contains 20%~35% (volume fraction) [...]
1 Voltage and Aluminum Electrolytic Capacitors The voltage indicators of aluminum electrolytic capacitor mainly include: rated DC voltage, rated surge voltage, transient overvoltage and reverse voltage, etc., which will [...]
1 Principle of aluminum electrolytic capacitors and implementation method of large capacitance When converting AC into DC, capacitor filtering is usually required to smooth the rectified DC, and a capacitor [...]
The filter and shunt capacitor device test is a project that needs to be carried out after the equipment is newly installed or after the equipment is powered off. [...]
1 Operation of AC filters and parallel capacitors 1.1 Manual switching of filters AC filters and parallel capacitors are the main capacitive reactive compensation equipment in the converter station. [...]
1 Circuit breaker operation overvoltage and inrush current The task of the capacitor circuit breaker is to close and close the load current and break the short-circuit fault current to [...]
1 Analysis of filter capacitor overvoltage protection characteristics The overvoltage research and insulation coordination of AC and DC filters have certain particularities, mainly because a large-capacity capacitor is installed in [...]
1 Filters and parallel capacitor overvoltage analysis question During the operation of the DC transmission system, the DC power will change. The DC transmission system can adjust the transmission power at [...]
1 Small group capacitor filter circuit breaker failure protection 1.1 Purpose of protection The purpose of this protection is to trip the "upper level" circuit breaker if the small group [...]
This article introduces the converter stations with relatively new technology that have been in operation in China. For different DC converter stations, the protection related values and some principles may [...]