Integrated monitoring system and monitoring method for high-voltage cable

Abstract

The invention provides an integrated monitoring system and monitoring method for a high-voltage cable. The system mainly comprises sensors, and the sensors are connected with an analog-to-digital (A / D) converter through a port, connected with a digital signal processor (DSP) through the A / D converter and connected with an upper computer system through a mobile network, wherein the DSP is provided with a flash data storage. The sensors include an integrated collecting sensor and a grounded monitoring sensor, and the ports of the sensors are standard ports so that the two sensors can be conveniently replaced; the integrated collecting sensor comprises an insulated shell in an O-type groove shape, an energy taking CT, a current collector and a temperature sensor, the energy taking CT, the current collector and the temperature sensor are independently arranged in the insulated shell, a hall sensor is used as the grounded monitoring sensor, and the standard ports are eight-core aviation sockets. The monitoring method includes signal collection, signal processing and upper computer processing. The monitoring method has the advantages that the structure is simple, multiple high-voltage cable parameters can be monitored simultaneously, the automation degree is high, installation is convenient to conduct, stability is high, and safety is good.

Description

technical field [0001] The invention relates to a high-voltage cable comprehensive monitoring system and a monitoring method, belonging to the technical field of high-voltage cable comprehensive monitoring. Background technique [0002] The parameter ranges of high-voltage cable current, high-voltage cable temperature, and high-voltage cable shielding layer grounding current are all important parameters that affect the normal operation of high-voltage cables. The main factors causing high-voltage cable faults at this stage are: cable temperature, cable current, and cable grounding current. When the long-term allowable current carrying capacity, temperature, and grounding current of the high-voltage cable change due to faults, the cable will be damaged, and in severe cases, a fire will be caused. Monitoring can reflect the comprehensive operating status of high-voltage cables. At present, there is still a lack of comprehensive monitoring system and monitoring methods for hi...

AI Technical Summary

Problems solved by technology

In many areas, the current, temperature, and grounding current of high-voltage cables are only measured manually, which requires secondary maintenance personnel. During the inspection period, only after measuring with special instruments and meters can it be judged whether the shielding layer is well grounded, and it cannot be monitored in time. The reliability of the grounding system and cable shielding in the station, and waste of manpower and material resources, cannot monitor the current, temperature, and grounding current value of high-voltage cables in real time

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