An overhead line fault detection terminal, its power supply device and a system using it
A fault detection and power supply device technology, applied in circuit devices, electromagnetic wave systems, battery circuit devices, etc., can solve the problems of inconvenient construction on site, inability to replace batteries, and restrictions, and achieve the effect of convenient on-site installation, convenient charging and electric energy storage
Inactive Publication Date: 2016-01-20
BEIJING HCRT ELECTRICAL EQUIP
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Problems solved by technology
The battery power supply cannot support wireless communication for a long time. Since the fault detection terminal is poured with epoxy resin, the battery cannot be replaced, and the service life of the product is severely restricted.
Even if the battery is designed to be replaceable, for widely distributed fault detection terminals, a lot of on-site work to replace the battery is not easy.
However, the use of solar power is severely restricted in the rainy season and places with insufficient sunlight.
In addition, it is difficult to integrate the fault detection terminal with the power fetching device by using a special high-voltage sensor to take power, which makes the installation of the fault detection terminal cumbersome, and sometimes requires power outages, which brings inconvenience to on-site construction.
Therefore, the existing overhead line fault detection terminal power supply scheme still has deficiencies and defects, and needs to be further improved.
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[0026] The present invention provides a power supply device for overhead line fault detection terminal, the design of the power supply device is based on the following analysis:
[0027] The overhead line fault detection terminal should upload the fault signal immediately after collecting the line short circuit or ground fault, and upload the line current value and temperature value at intervals when there is no fault. The consumption of the fault mainly lies in the energy consumed during communication. If the energy supplemented in the communication interval is greater than the energy of one communication, the fault detection system can work normally. Therefore, the key point of the designed power supply device is to store the obtained electric energy, and at the same time reduce the lower limit of the line current so that it can obtain electricity when the line current is small, and has the ability to work intermittently. The above analysis shows that if the circuit is desig...
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Abstract
The invention discloses an overhead line fault detection terminal, a power supply device of the overhead line fault detection terminal, and a system with the overhead line fault detection terminal. The power supply device can get electricity from a power line and comprises an electricity getting magnetic circuit and an electricity getting circuit connected with the electricity getting magnetic circuit, a current transformer is adopted for the electricity getting magnetic circuit, a magnetic conduction part of the current transformer is formed by combining multiple sections, at least two magnetic conduction materials are adopted for the magnetic conduction part, and the electricity getting circuit is a circuit which can intermittently conduct charging and electricity storage. The power supply device is easy and convenient to install, capable of effectively supplying power to the detection terminal and the system for a long time, and the defects of a traditional overhead line fault detection terminal and system power supply method are overcome.
Description
technical field [0001] The invention relates to the technical field of power supply design for overhead lines, in particular to a power supply device for an overhead line fault detection terminal, a fault detection terminal and a fault detection system using the device. Background technique [0002] At present, the power supply of overhead line fault detection terminals at home and abroad mainly includes battery power supply, solar power supply and high voltage induction power supply. The use of battery power supply cannot support wireless communication for a long time. Since the fault detection terminal is poured with epoxy resin, the battery cannot be replaced, and the service life of the product is severely restricted. Even if it is designed in the form that the battery can be replaced, for widely distributed fault detection terminals, a large number of on-site work to replace the battery is also an extremely difficult task. However, the adoption of solar energy for powe...
Claims
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IPC IPC(8): H02J7/00H02J17/00H01F27/24
Inventor 顾涛
Owner BEIJING HCRT ELECTRICAL EQUIP