High voltage reactors have a significant stabilizing effect on power systems in suppressing harmonics, balancing loads, and other aspects. However, with the continuous increase of power load and the diversification of power equipment, high-voltage reactors are facing more and more usage problems. Therefore, implementing primary protection measures is particularly necessary.
1, The necessity of main protection measures for high-voltage reactors:
1. Prevent equipment damage:
High voltage reactors may withstand excessive current and voltage during faults, and protective measures to deal with these abnormal situations can effectively prevent equipment damage. For example, winding short circuits, external short circuits, and insulation faults can all cause equipment to overheat or burn out.
2. Ensure system stability:
High voltage reactors play a crucial regulatory role in power systems, and their faults may cause instability or oscillation in the system. The main protection measures can quickly detect and isolate faults, avoid the expansion of faults, and thus maintain the stability of the system.
3. Ensure personal safety:
The malfunction of high-voltage reactors may pose serious safety hazards, such as arc flashover, explosions, etc. Effective protective measures can promptly cut off fault currents and reduce safety threats to operators and maintenance personnel.
4. Reduce power outage time and economic losses:
Quick and accurate protective measures can quickly isolate faulty equipment, reduce power outage time, restore power supply, and improve system reliability. Meanwhile, avoiding prolonged power outages and equipment damage can also help reduce economic losses.
2, Main protection measures for high-voltage reactors
1. Differential protection:
Mainly used to detect internal faults in high-voltage reactors. It determines whether there is a fault by comparing the current entering and leaving the reactor, and can quickly and accurately reflect the internal fault situation of the equipment.
2. Overcurrent protection:
Used to detect overload and short circuit faults in reactors. When the current exceeds the set value, the protection device will immediately activate and cut off the faulty circuit.
3. Overvoltage protection:
Used to prevent damage to the reactor from overvoltage. This can be achieved by setting lightning arresters or installing overvoltage protection devices.
4. Resonance protection:
Prevent the reactor from resonating with other components in the system, causing overvoltage or overcurrent.