In the shale gas drilling rig project of a drilling company in the north, the winch motor is 400KW, the turntable motor is 300KW, and the voltage is 600V. The two motors are powered by the winch and the turntable respectively through the transmission device, and the control room will adjust the motor speed according to the specific drilling depth and drilling technology to meet the drilling process requirements. The zero-speed "hovering" function of the winch motor makes on-site operation easier and the operation process safer. The turntable's zero-speed torque output retention function simplifies the torque release process and easily copes with stalled rotor conditions. INVT Drive plans to comprehensively increase the on-site production power and ensure the safety of on-site operations.
Compact structure, small space, reliable and stable performance
Compared with the stand-alone equipment, the rectifier capacity equipment is small, the braking unit equipment is less, the equipment installation space is small, and the economy of system application and later maintenance is better.
INVT Multi-Transmission Program
The system uses two sets of GD800 rectifier modules to supply power to four GD800 inverters through the DC bus, which not only considers the rectification margin, but also reasonably reduces the total installed capacity. The inverter adopts the form of speed vector control, with high control accuracy and speed response block, and the operation is more stable and reliable.
Program Features:
Goodrive800 engineering transmission products are specially planned for high-end use shopping malls, and adopt the modular planning concept of the international mainstream, which can be used in situations that require high overload capacity, high reliability, and continuous operation; The adoption of INVT plan has the following excellent features:
1. The power density is large, and the volume is reduced by more than 30% compared with the previous equipment, which reduces the indoor floor space.
2. The common braking unit has a high utilization rate of equipment, which is both economical and efficient.
3. The rectifier power is more than 99%, and the inverter power is more than 98.5%.
4. Installation and operation in front of the cabinet is convenient for users to maintain equipment in the later stage.
5. The system is a cabinet, with less external cross-lines, and the moving and disassembly are faster.
6. High power factor, up to 0.95 or more.
7. The system is low noise, pollution-free, and more green and environmentally friendly.
Energy feedback and reuse to help promote "carbon neutrality"
Compared with the use of traditional diesel engine drive, the use of motor drive has many advantages, including small environmental pollution, small impact on the noise of surrounding residents, small maintenance workload, etc., when the winch is decelerated and lowered, the electric energy can also be fed back to the DC bus through the inverter, and then used for other equipment such as turntable and mud pump, which greatly improves the power of electric energy.
According to the data calculation, in the case of diesel engine drive, the daily oil consumption is about 2.5 tons, according to 7,500 yuan per ton, the daily cost is about 18,700 yuan. In the case of motor drive, the daily power consumption is about 14,000 kWh, and the daily cost is about 15,400 yuan according to 1.1 yuan/kWh. In the case of electricity, it can save at least about 3,300 yuan per day, and the energy saving effect is obvious.
After on-site application, INVT GD800 inverter has a good response effect and a significant role in power saving rate, which is a good helper for the drilling profession and has a wide range of use prospects in turntables, top drives, winches and mud pumps.
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