Dry-type air-core reactor electric field detection device

Abstract

A dry-type air-core reactor electric field detection device is characterized in that with rapid development of Northeast and national extra-high voltage transmission lines, the proportion of a dry-type air-core shunt reactor in equipment is larger and larger, the effect is more and more obvious, and targeted prevention measures can be provided by researching fault reasons of the air-core reactor. According to the electric field detection device for the dry-type air-core reactor, the weak insulation position of the dry-type air-core reactor can be found through electric field detection of the reactor, and a certain prevention effect on turn-to-turn short circuit of the reactor is achieved. The device is composed of an electric field signal acquisition part, an electric field signal processing circuit, a microprocessor, a power supply circuit, an RS485 communication circuit and an upper computer. The invention relates to the field of dry-type air-core reactor detection.

Description

technical field [0001] The invention relates to the field of dry-type air-core reactor detection. Background technique [0002] At present, with the rapid development of the social economy, the country's electricity demand is also increasing year by year, which puts forward more stringent requirements for the power system, and promotes its continuous development in the direction of high voltage, large capacity and long span. With the large-scale development of high-voltage power grids, the voltage level is getting higher and higher, the distance of electric energy transmission is getting longer and farther, and the transmission capacity of underground cables is increasing, which makes the capacitive charging power of transmission lines larger. In order to maintain the safe operation of the power system and solve the capacitive effect, a shunt reactor is generally connected to the ultra-high voltage transmission line to provide inductive reactive power for the power grid, pla...

AI Technical Summary

Problems solved by technology

Seriously affect the safe and stable operation of the system

In the current domestic and foreign research on dry-type air-core reactor failure and protection, the reasons for the failure of the reactor have been basically clarified, mainly due to the lack of production process or the formation of dendrite discharge in the harsh climate environment of the external insulation, or the influence of Affected by the surrounding environment, some pollution such as rain, snow, moisture and bird droppings corrodes the reactor, and gradually develops, which eventually leads to short-circuit damage to the turn insulation, etc.

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