Circuit control system for suppressing short-circuit fault of circuit

Abstract

The invention provides a circuit control system for suppressing a short-circuit fault of a circuit. The circuit control system comprises a wire connected with a power supply, the wire is connected in series with a current limiter, a voltage sensor and a current sensor, the output ends of the voltage sensor and the current sensor are connected with an A / D converter, the output end of the A / D converter is connected with the input end of a controller, and the output end of the controller is connected with the current limiter. The control system has the advantages of stable and reliable performance, zero loss, and capability of energy saving and emission reduction, effectively protects the impact of current to a transformer and a line switch in a short-circuit condition, improves the operation stability of a power system and protects the performance of the power system and electric equipment.

Description

technical field [0001] The invention belongs to the technical field of electric engineering, and in particular relates to a current control system for suppressing circuit short-circuit faults. Background technique [0002] Due to the limitation of the short-circuit capacity of the power grid and the short-circuit capacity of the relay protection device, in order to ensure the safe operation of the power grid, the current power grid cannot achieve effective dispatch of power, so short-circuit phenomena often occur. Short-circuit fault is one of the most common and most harmful faults in power supply system. It is mainly caused by natural aging, poor quality, damage by external force or human-made insulation of the current-carrying part of electrical equipment. Short-circuit faults in electrical equipment will damage the components in the short-circuit circuit and affect the normal operation of electrical equipment; it will also cause power outages, causing economic losses to ...

AI Technical Summary

Problems solved by technology

Short-circuit faults in electrical equipment will damage the components in the short-circuit circuit and affect the normal operation of electrical equipment; it will also cause power outages, causing economic losses and inconvenience to production, and may even cause fire accidents

Severe short circuit will affect the stability of the power system operation, which can cause the generator sets running in parallel to lose synchronization and cause the system to be paralyzed; the asymmetrical short circuit current will generate a strong unbalanced alternating electromagnetic field, which will affect nearby communication lines, electronic equipment, etc. Generate electromagnetic interference, affect its normal operation, and may cause malfunction

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