Wireless intelligent sensor for on-line monitoring of transformer substation

Abstract

The invention discloses a wireless intelligent sensor for on-line monitoring of a transformer substation, which comprises a mounting shell, an upper cover, a protective shell, a circuit control board, a storage battery and a sensor assembly, wherein a partition is arranged in the mounting shell and divides the mounting shell into a circuit board mounting groove in the upper layer and a battery mounting groove in the lower layer, an opening of the battery mounting groove is formed in the side edge of the mounting shell, and a mounting head connected with a three-way valve is arranged at the bottom of the mounting shell; the upper cover is arranged on the upper side of the mounting shell and is fixedly connected with the mounting shell; the protective shell sleeves the outer side of the mounting shell and is fixedly connected with the mounting shell; the circuit control board is arranged in the circuit board mounting groove and is fixed with the mounting shell; the storage battery is arranged in the battery mounting groove; the sensor assembly is arranged in the mounting head and is electrically connected with the circuit control board; a through hole is formed in the middle of the partition, and a circuit of the circuit control board is electrically connected with the storage battery and the sensor assembly on the lower layer through the through hole. The wireless intelligent sensor is compact in structure and convenient to install.

Description

technical field [0001] The invention relates to the technical field of substation safety detection, in particular to a wireless intelligent sensor for on-line monitoring of substations. Background technique [0002] Oil temperature and oil pressure wireless smart sensors are widely used in substations. Switch cabinets and circuit breakers are high-voltage electrical appliances widely used in power systems. The reliable operation of these sensors has become one of the biggest concerns of the power supply and utilization departments. The performance of the sensor depends to a large extent on the density of the oil temperature and oil pressure wireless smart sensor, so it is particularly important to monitor the density of the oil temperature and oil pressure wireless smart sensor. [0003] Most of the existing density meters used to monitor sulfur hexafluoride equipment are realized by monitoring temperature and pressure; the temperature information and pressure information c...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing density meters used to monitor sulfur hexafluoride equipment are realized by monitoring temperature and pressure; the temperature information and pressure information collected by the sulfur hexafluoride density relay in the prior art cannot be transmitted to the remote end, so people On-site reading is necessary; for mechanical density relays, the on-site reading (meter reading) is also slightly complicated, and some sulfur hexafluoride density relays whose installation positions are not conducive to observation are also likely to cause errors in manual readings; after long-term practice, some In the existing technology, signals are sent and received by adding pressure sensors. In this way, mechanical and digital sulfur hexafluoride structures exist at the same time. After our long-term practice monitoring and analysis, as well as feedback from on-site operation and maintenance personnel and the amount of installation work According to the accounting, the cost and reliability of adding pressure sensors still need to be improved. On the one hand, the mechanical density relay (as shown in Figure 5, including the case, dial, gas connector and signal line connector) has been widely used and Development is still the most reliable means of monitoring the density of sulfur hexafluoride, which can cope with a wider and more complex environment. On the other hand, when installing a pressure sensor, it is necessary to re-disassemble and replace the installation position of the entire sulfur hexafluoride, which is The power outage time is too long, the installation organization is too complicated, the installation and maintenance results are too high, and the promotion in many places has encountered obstacles

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