Fracturing Power Supply Switching for Reliable Backup and Fuel Use
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the field of oil and gas exploitation, electrically-driven fracturing systems face challenges due to power failures and inefficiencies in power generation, leading to equipment damage and reduced fuel efficiency.
Innovation Solution
An electrically-driven fracturing system with multiple power supplies, including a main power generation device and one or more auxiliary power generation devices, along with a switch device featuring high-voltage and low-voltage switch groups, allows for efficient power allocation and ensures continuous operation even during power failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single main power generation device is used to power the fracturing system, then the device complexity is reduced, but the reliability of power supply deteriorates due to potential power failures
Solution Approach 1:
The power supply system is segmented into multiple independent power generation devices (main power generation device and auxiliary power generation devices), where each device can independently power specific equipment. The switch device segments the power distribution into multiple pathways, allowing selective connection between power sources and loads, thereby improving reliability without requiring a completely redundant complex system.
Solution Approach 2:
The system incorporates auxiliary power generation devices that serve as pre-prepared backup power sources. When the main power generation device fails, the switch device automatically or manually connects the auxiliary power generation devices to power critical equipment, providing beforehand cushioning against power supply failures and preventing system shutdown.
2Power
If the main power generation device operates at high power capacity, then it can meet peak power demands, but fuel efficiency deteriorates when operating at low power levels
Solution Approach 1:
The system dynamically adjusts the power generation configuration based on actual power demands. The switch device enables flexible combination of main and auxiliary power generation devices, allowing the system to operate at optimal power levels matching the load requirements, thereby improving fuel efficiency while maintaining the capability to meet peak power demands when needed.
Solution Approach 2:
The system changes the operational parameters by adjusting which power generation devices are active and at what power levels. By varying the power output configuration between main and auxiliary devices based on demand, the system maintains high power capacity availability while operating at lower, more fuel-efficient power levels during normal operations.
3Use of energy by moving object
If the main power generation device is shut down during low power demand, then fuel efficiency improves, but power supply reliability deteriorates due to lack of backup
Solution Approach 1:
The auxiliary power generation devices are maintained in a ready state with necessary fuel and operational capability before any power failure occurs. This preliminary preparation ensures that when the main power generation device is shut down during low demand, the auxiliary devices can immediately take over power supply duties, maintaining reliability while improving fuel efficiency.
4Reliability
If multiple power generation devices are used, then power supply reliability improves, but the device complexity increases
Solution Approach 1:
The auxiliary power generation devices are designed with multi-functionality, serving both as backup power sources and as primary power sources during normal operations when the main device is shut down. The switch device provides universal connectivity, able to connect any power generation device to any equipment, reducing the need for dedicated complex wiring for each power source.
Data Source
AI summary
An electrically-driven fracturing system, which includes a main power generation device, a first auxiliary power generation device, a switch device, and an electrically-driven fracturing device; the electrically-driven fracturing device includes a fracturing motor and a fracturing auxiliary device; a rated generation power of the main power generation device is greater than that of the first auxiliary power generation device, a rated output voltage of the main power generation device is greater than that of the first auxiliary power generation device, the input end of the high-voltage switch group is connected to the main power generation device, the output end of the high-voltage switch group is connected to the fracturing motor, the input end of the low-voltage switch group is connected to the first auxiliary power generation device, and the output end of the low-voltage switch group is connected to the fracturing auxiliary device.