‍Electric submersible pump is a medium pressure mechanical oil extraction equipment used in oil fields. With the improvement of automation in oilfield development, the original fixed frequency control cabinet for submersible pumps has problems such as incomplete leakage function, inconvenient data analysis, no waveform recording, and no communication function. The main reason for these shortcomings is that the protector not specifically designed for submersible pumps does not support the above functions.

At present, there are few manufacturers researching and developing electric submersible pumps, and their scale is relatively small. The products have not formed a series and scale. In order to enhance the competitiveness of submersible pump protectors and make up for the shortcomings of old-fashioned protectors, it is necessary to develop a targeted submersible pump protector.

1. Differences between submersible pump protectors and motor protectors

2. Characteristics of Electric Submersible Pump Protector

Product composition of 3 submersible pump protectors

The submersible pump protector consists of a protector body, a human-machine interaction module, and a switching power supply, as shown in Figure 1. The main body of the protector completes parameter collection, protection, and communication functions; The human-computer interaction module achieves real-time parameter display, parameter setting, real-time curve display, historical curve display, historical data query, fault query, and other functions; The switching power supply converts AC/DC 220V (or other levels) voltage into low voltage for use by the main body and human-computer interaction modules.

Design of 4 Electric Submersible Pump Protector

The design of the submersible pump protector is divided into two aspects: hardware and software. The hardware design includes power supply, signal acquisition, switch input and output, communication circuit, and other parts; The software design mainly includes Software architecture, measurement algorithm, protection algorithm, control algorithm, etc.