Integrated Step-Down Power Supply for Wellsite Wiring and Heat Control
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Solution Overview
Problem
Existing electric drive fracturing devices have low integration, leading to increased wiring workload, transportation inconvenience, and safety risks due to manual high-voltage switching operations at wellsites.
Innovation Solution
A high-integration step-down power supply device comprising a first switch cabinet, transformer, and second switch cabinet integrated on a platform with a radiator for heat dissipation, along with an on-load tap changer and control system to regulate voltage and automate switching operations, reducing manual intervention and enhancing safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate switch cabinets and transformer are used in the wellsite, then the power supply can be distributed to multiple devices, but the wiring workload increases and integration decreases
Solution Approach 1:
The patent combines the first switch cabinet, transformer, and second switch cabinets into an integrated substation unit. This merging eliminates the need for separate wiring connections between individual components, significantly reducing wiring workload while maintaining the capability to distribute power to multiple devices through the integrated unit's internal wiring architecture.
2Power
If large volume switch cabinets and transformer are deployed, then high power supply capability is achieved, but transportation between wellsites becomes inconvenient
Solution Approach 1:
By integrating multiple large-volume components into a single compact substation unit, the patent achieves high power supply capability while reducing the overall transportation footprint. The integrated design allows the entire power supply system to be moved as one unit rather than requiring disassembly and reassembly of multiple large components.
3Adaptability or versatility
If manual switching of high voltage tap is performed, then voltage regulation is achieved, but operation efficiency decreases and safety risks increase
Solution Approach 1:
The patent incorporates an automatic voltage regulator that monitors and adjusts the transformer's tap position automatically based on load conditions and voltage requirements. This self-service mechanism eliminates manual intervention, improving switching operation efficiency while reducing safety risks associated with manual high-voltage switching.
4Adaptability or versatility
If temporary wiring arrangement is used for substation components, then flexible deployment is achieved, but wiring workload requires大量 manpower and time
Solution Approach 1:
The integrated substation design comes pre-wired with internal connections between the first switch cabinet, transformer, and second switch cabinets. This eliminates the need for time-consuming temporary wiring arrangements on-site, as the unit can be deployed as a complete, pre-assembled system requiring only connection to the power source and load distribution points.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution reduces wiring workload, facilitates transportation, and improves operational efficiency and safety by automating voltage regulation and switching operations, thereby stabilizing power supply to electric drive fracturing devices.
Implementation Method 1
a transformer configured for receiving the alternating current from the first switch cabinet, reducing the first voltage of the received alternating current to a second voltage, and outputting the second voltage
Implementation Method 2
a radiator configured for dissipating heat of at least two of the first switch cabinet, the transformer and the second switch cabinet
Data Source
AI summary
A step-down power supply device includes: a first switch cabinet configured for receiving an alternating current having a first voltage and controlling an on-off switching of a power supply network; a transformer configured for receiving the alternating current from the first switch cabinet, reducing the first voltage of the received alternating current to a second voltage, and outputting the second voltage; a second switch cabinet configured for receiving the second voltage from the transformer, and outputting the second voltage; and a radiator configured for dissipating heat of at least two of the first switch cabinet, the transformer and the second switch cabinet, wherein the first voltage is greater than the second voltage. The present disclosure can reduce the size of the step-down power supply device, while improving the efficiency of heat dissipation.