Due to high voltage capacitance resistance, high temperature advantage has been widely used. The loss of high voltage capacitors is relatively large, how do we protect high voltage capacitor Banks in the work, and what important protective measures should we take?
In order to protect the high voltage capacitor, it is the most important step to take the corresponding overvoltage protection measures. High capacitor overvoltage will damage the capacitor directly. Therefore, it is necessary to have strict monitoring measures for capacitor overvoltage, and reasonable and effective protective devices should be set up. When running more than rated voltage 120 v voltage, high voltage capacitor protection device of direct action signal capacitor tripping protection, prevent their further damage, direct voltage return to normal, continue to work to ensure capacitance.
The second method is capacitor off-harmonic protection countermeasure. As is known to all, higher harmonic easy generation is damaged for high voltage capacitor over voltage and current, so you must first find out the cause of the damage of harmonic on the capacitor, and then to protect Settings. Work, engineers to reduce the high order harmonic component of harmonic source, can be used for capacitor areas do the test of the harmonic wave in the power grid, and find out the harmonic source in the testing process, then take necessary countermeasures to it.
At present, the effective countermeasures are as follows: reactor or damped current limiter with proper parameters in series in the capacitor path; When selecting the reactor parameters, the additional principle of the resonant point matching between the rong kuang and the inductive reactance is adopted to suppress the 5 or more harmonics. In addition, the reactor can effectively inhibit the capacitor overvoltage due to closing, and reduce the overvoltage when the circuit breaker is disconnected.
The protection of high voltage capacitor Banks requires the following points:
1. Understand the working principle of high voltage capacitor and master the important links in the working principle;
2. Grasp some special laws in the working process of capacitor Banks and adopt effective strategies accordingly;
3. Attention should be paid to some external factors, such as current and the same method used in work, in the process of adopting protective countermeasures for high voltage capacitor Banks.
If you want to protect the high voltage capacitor bank effectively, you should memorize the above mentioned countermeasures, and remember some important details, because it can reduce unnecessary trouble for the project.
In order to protect the high voltage capacitor, it is the most important step to take the corresponding overvoltage protection measures. High capacitor overvoltage will damage the capacitor directly. Therefore, it is necessary to have strict monitoring measures for capacitor overvoltage, and reasonable and effective protective devices should be set up. When running more than rated voltage 120 v voltage, high voltage capacitor protection device of direct action signal capacitor tripping protection, prevent their further damage, direct voltage return to normal, continue to work to ensure capacitance.
The second method is capacitor off-harmonic protection countermeasure. As is known to all, higher harmonic easy generation is damaged for high voltage capacitor over voltage and current, so you must first find out the cause of the damage of harmonic on the capacitor, and then to protect Settings. Work, engineers to reduce the high order harmonic component of harmonic source, can be used for capacitor areas do the test of the harmonic wave in the power grid, and find out the harmonic source in the testing process, then take necessary countermeasures to it.
At present, the effective countermeasures are as follows: reactor or damped current limiter with proper parameters in series in the capacitor path; When selecting the reactor parameters, the additional principle of the resonant point matching between the rong kuang and the inductive reactance is adopted to suppress the 5 or more harmonics. In addition, the reactor can effectively inhibit the capacitor overvoltage due to closing, and reduce the overvoltage when the circuit breaker is disconnected.
The protection of high voltage capacitor Banks requires the following points:
1. Understand the working principle of high voltage capacitor and master the important links in the working principle;
2. Grasp some special laws in the working process of capacitor Banks and adopt effective strategies accordingly;
3. Attention should be paid to some external factors, such as current and the same method used in work, in the process of adopting protective countermeasures for high voltage capacitor Banks.
If you want to protect the high voltage capacitor bank effectively, you should memorize the above mentioned countermeasures, and remember some important details, because it can reduce unnecessary trouble for the project.