Remote monitoring method and system of electric motor of oil extractor based on power-frequency communication of electric wires

Abstract

The invention discloses a remote monitoring method and a system of an electric motor of an oil extractor based on power-frequency communication of electric wires, which belong to the technical field of the monitoring of petroleum extracting equipment and the system is the monitoring system based on the combination of the internal network of an oil field and the bidirectional power-frequency communication of electric wires. A remote monitoring terminal on the end of an oil extracting electric motor is connected with a concentrator on the end of a converting station by an electric distributing transformer, and the concentrator and the management center are connected by internal Ethernet interfaces of the oil field. The remote monitoring terminal and the concentrator use the mode of power-frequency communication for transmitting information and are arranged on the low-voltage side with the equipment of the monitoring system. Equipment connected and combined with the high-voltage electric transmission line is not required to be additionally arranged. A descent passage and an ascent passage between the converting station and the remote monitoring terminal modulate voltage wave shapes and current wave shapes to realize communication. Relevant departments monitor the running condition of the electric motor of every oil extractor by the Ethernet and the electric supplying line of the oil field. The invention is particularly suitable for the work environment of the oil field, has low cost and can be called the economical remote monitoring system of the electric motor of the oil extractor.

Description

technical field [0001] The invention relates to the field of monitoring of oil exploitation equipment, in particular to a method and system for remote monitoring of pumping unit motors based on power line power frequency communication. Background technique [0002] The management of pumping wells in the oil extraction industry is one of the key links in oilfield production management. Monitoring the operation data of oil well motors through remote communication systems can timely grasp the oil well load status, improve the management level of oil production equipment, and at the same time be able to excavate more effectively. energy saving potential. [0003] Low-cost, high-quality data monitoring channel is the most critical factor for whether the oil well motor remote monitoring system can be popularized and applied. Various oil well monitoring systems based on public wireless communication methods such as GSM / GPRS have been tested in the oil field. Problems such as cost ...

AI Technical Summary

Problems solved by technology

[0006] At present, the two-way power frequency communication technology is mainly used in the field of residential meter reading in the power system. It is realized based on the time domain method. The communication effect in the civil power grid is good, but it cannot adapt to the complex interference of oil well power supply lines.

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