Method for testing capacitive current of isolated neutral system

Abstract

The invention discloses a method for testing a capacitive current of an isolated neutral system, and belongs to the technical field of high-voltage testing. The method includes the steps that different-frequency signals are injected from the neutral point of a capacitor bank (2) by a single-phase electromagnetic voltage transformer (6) through an insulated cable (5), and the capacitive current of the isolated neutral system is obtained through calculation. The method can be carried out in an electrification mode, the problem that an original capacitive current test is low in testing efficiency, inaccurate in testing result, unsafe in testing method and the like is solved, and the testing method provides a basis for accurately measuring the capacitive current of the isolated neutral system and allocating an arc suppression coil according to the testing result or checking the capacity of the arc suppression coil.

Description

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AI Technical Summary

Benefits of technology

This technology helps reduce stress on electronic devices caused when they fail due to sudden or temporary power loss while still being able to perform tests accurately with one phase voltages instead of multiple phases. It also improves safety measures against potential damage from high levels of noise generated by other equipment within the same area without affecting their performance.

Problems solved by technology

There has been increasing concern about potential damage due to arcing between two parts of electricity transmission systems during times of high demand without interrupting their power supplies. Current techniques such as measuring inductive (L) currents have limitations because they require extra devices on both sides of the circuitry being tested. Directly attaching an electrode called an AC contactor can provide precise measurements while minimizing any risks associated with these new technologies. However, this approach requires careful handling and monitoring of voltages across all components connected through wires, making it difficult if practical. Interference compensation circuits may improve accuracy compared to other approaches like zero crossing detection.

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