Introduction: The KCJD-XGK power grid grounding monitoring and management system represents a crucial advancement in ensuring the safety and stability of power distribution systems. Specifically designed for neutral ungrounded systems ranging from 6 to 35KV, where the neutral point is grounded by the arc-cancelling coil power system, this innovative device employs advanced technology to detect and mitigate potential faults, overvoltages, and oscillations in the power grid.
Scope of Application: The KCJD-XGK system finds its application in 6-35KV neutral point ungrounded systems, where the neutral point is grounded by the arc-cancelling coil power system. This system is designed to operate seamlessly in various industries such as post and telecommunications, railways, computer networks, electricity, meteorology, transportation, petroleum, coal, oil fields, and the chemical industry. Its ability to function effectively in neutral ungrounded systems makes it a versatile solution for power grid protection.
Working Principle:
- Neutral Point Non-Effective Grounding: The system employs a neutral point drawn out through the grounding transformer, grounded with non-linear resistance during a fault condition. Under normal operation, the neutral point remains ungrounded.
- Fault Detection and Analysis: When a circuit produces a gap arc or permanent arc grounding fault, the system detects the rise in neutral point voltage through the grounding transformer. The nonlinear resistance conducts, allowing the zero sequence current to flow to the main controller. The dynamic capture monitor analyzes the voltage changes and phase angles, identifying the faulty phase in the system.
- Overvoltage Protection: In the event of gap arc overvoltage, the control system monitors the changes in the voltage of the entire network. The whole network overvoltage suppressor is activated to absorb various overvoltages and gap arc overvoltages, safeguarding the system and maintaining its safe operation.
- Resonance Elimination: The system addresses issues of primary and secondary resonance caused by overvoltage fluctuation, high resistance grounding, or metallic grounding. The control system eliminates resonance, preventing oscillations that could compromise measurement and protection signals.
Conclusion: The KCJD-XGK power grid grounding monitoring and management system stands as a sophisticated and comprehensive solution for ensuring the safety, stability, and efficient operation of neutral ungrounded systems. By employing advanced fault detection, overvoltage protection, and resonance elimination techniques, this system plays a pivotal role in minimizing risks, protecting equipment, and maintaining the reliability of power distribution across various industries. Its application in diverse sectors underscores its adaptability and effectiveness in addressing the unique challenges of neutral ungrounded power systems.