Electric field induction powered disconnector contact temperature online measurement and wireless transmission device
A technology of isolation switch and electric field induction, which is applied in the direction of using electric devices, measuring devices, and thermometers using electric/magnetic elements that are directly sensitive to heat, can solve the limited working life of batteries, the limitation of energy storage and release capacity, and the limitation of power generation capacity And other issues
Active Publication Date: 2013-01-16
YINCHUAN POWER SUPPLY COMPANY OF STATE GRID NINGXIA ELECTRIC POWER +1
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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; sec
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[0017] The principle diagram of the electric field induction power supply circuit of the disconnector contact temperature online measuring device in the present invention is as follows figure 1 shown. The entire inductive power supply circuit is divided into three parts: (1) inductive energy acquisition circuit 1; (2) energy storage and its control circuit 2; micro-power consumption DC-DC circuit 3. Among them, the main function of the inductive energy harvesting circuit 1 is to use the displacement current generated by the high-voltage electric field between the induction plate 4 and the earth to charge the energy harvesting capacitor C1; the main function of the energy storage and its control circuit 2 is to transfer the energy obtained by the energy harvesting capacitor C1 It is transferred to the large-capacity energy storage capacitor C2 through a step-down pulse transformer; the micro-power consumption DC-DC circuit 3 is used to convert the voltage of the energy storage ...
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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...
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Inventor 艾绍贵曾翔君吕洪波张慧詹国红梅华潘庆庆骆一萍
Owner YINCHUAN POWER SUPPLY COMPANY OF STATE GRID NINGXIA ELECTRIC POWER
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