Electric field induction powered disconnector contact temperature online measurement and wireless transmission device

Abstract

The invention relates to the technical field of on-line monitoring of electric power system equipment, in particular to an electric field induction powered disconnector contact temperature online measurement and wireless transmission device. The electric field induction powered disconnector contact temperature online measurement and wireless transmission device is characterized by comprising a suspension measurement device mounted on each disconnector conductive arm (5) for a transformer substation and a coordinator in wireless communication with all the suspension measurement devices, wherein the coordinator is connected with a background PC (personal computer) through an optical fiber. The electric field induction powered disconnector contact temperature online measurement and wireless transmission device is mainly characterized in that a temperature measurement device is suspended at a position, close to each contact, on each disconnector conductive arm, a temperature measurement element is embedded at each suspension point and can directly measure the temperature nearby each contact, the whole device is used for taking energy by the aid of a high-voltage electric field for inducing alternation and belongs to a self-powered system without an additional power source, and a measurement result is transmitted to a master control room of the transformer substation. The technical scheme has obvious advantages over a temperature measurement scheme adopting a solar battery and magnetic field coil power supply mode provided currently.

Description

technical field [0001] The invention relates to the technical field of on-line monitoring of electric power system equipment, in particular to an on-line temperature measurement and wireless transmission device of an isolating switch contact point powered by electric field induction. Background technique [0002] At present, the conventional method of power system to monitor the contact temperature of high-voltage isolating switch in substation is to rely on manpower and infrared thermometer to conduct regular inspections. This method not only consumes a lot of manpower, but also cannot realize real-time monitoring of contact temperature changes. Some on-line measurement schemes have also been proposed, but in these schemes, since the on-line measurement device is installed on the high-voltage conductive arm of the disconnector, how to solve the power supply problem of the device is a technical bottleneck. [0003] Existing schemes include: (1) Using optical fiber temperatur...

AI Technical Summary

Problems solved by technology

The main problem of this technical solution is that it is easily affected by the environment. For example, the power generation capacity of solar panels depends on the light conditions, and the power generation capacity is greatly limited at night or in rainy weather and dust coverage; secondly, the working life of the storage battery is limited. Moreover, the ability to store and release energy at low temperatures is greatly limited.

The biggest problem with this solution is that the load current is always fluctuating, and the stability of power supply is facing challenges

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