Real-time online hot spot detection device for air-core reactor

Abstract

The invention discloses a real-time online hot spot detection device for an air-core reactor. The device comprises an air-core reactor winding, a plurality of package units are connected in parallel,a plurality of supporting strips are connected between every two adjacent package units, heat dissipation air channels are formed between the package units through the supporting strips, and the winding is formed by the package units and the adjacent supporting strips. The package units are connected in parallel to form a coil, an upper wire outlet arm and a lower wire outlet arm are arranged at an upper end and a lower end of the coil respectively, and a hollow reactor coil is formed by the upper wire outlet arm and the lower wire outlet arm. A temperature probe is arranged at a hot spot height position of each package unit, and an upper part of the air-core reactor winding is equipped with an energy taking coil. According to the detection device of the invention, the power supply problemof the real-time online detection of high-voltage end detection equipment of the high-voltage air-core reactor is effectively solved, compared with other detection power supplies, the maintenance isfree, the service life is long, the power is large, at the same time, through hot spot real-time detection, the protection problem of the air-core reactor is effectively solved, fault points can be effectively and timely found, the accident rate is reduced, and the reliability of the system is improved.

Description

technical field [0001] The invention relates to the field of power systems, in particular to a real-time online hot spot detection device for an air-core reactor. Background technique [0002] Chinese Patent Document No. CN206250031U disclosed a multi-tap epoxy cast air-core reactor on June 13, 2017, including: an outer cylinder, including an outer cylinder body, and an opening is arranged on the outer cylinder body along its axial direction. The opening of the cylinder body is extended with a limit portion, and the outer cylinder is filled with epoxy resin; the insulating inner cylinder is sleeved in the outer cylinder body and the two are coaxially arranged; the multi-turn coil, the multi-turn Coils are sleeved on the insulating inner cylinder and stacked along the axial direction of the insulating inner cylinder. The taps of the multi-turn coils are passed through the opening of the outer cylinder body; insulating pads are arranged on any two adjacent coils Between, a co...

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Problems solved by technology

This air-core reactor is insulated with resin, which has poor weather resistance and high failure rate; moreover, the unique multi-branch parallel structure of this air-core reactor cannot be effectively protected by traditional relay protection methods, and hot spot temperature rise detection is currently the most effective monitoring method , Real-time online detection at the high-voltage end. Power supply detection has always been a difficult point. The existing battery power supply method, due to the high ambient temperature of the battery, short life, frequent replacement, heavy replacement workload, high cost of use, and the ambient temperature of the detection device Too high, high cost, limited reliability, and affect the utilization rate of air-core reactor

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