Transformer-Free Fracturing Power Platform With Energy Storage
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Solution Overview
Problem
Conventional fracturing equipment powered by diesel engines faces issues such as large size and weight, environmental pollution, high costs, and inefficiencies, which hinder the exploitation of unconventional oil and gas sources.
Innovation Solution
A fracturing system that includes a power supply platform with a gas turbine engine, rectifiers, and a power system that can output voltage directly to rectifiers without a rectifier transformer, along with an energy storage unit that stores and supplies electrical energy, reducing the reliance on internal combustion engines and optimizing energy usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If diesel engine is used to drive transmission and fracturing plunger pump, then power transmission is achieved, but large volume and heavy weight are occupied
Solution Approach 1:
The patent replaces the mechanical diesel engine-transmission system with an electric drive system consisting of motor, reducer, and coupling. This substitution eliminates the heavy diesel engine while achieving the same power transmission function through electrical power, thereby reducing weight and volume occupied by the power transmission system.
2Power
If diesel engine is used to drive fracturing plunger pump, then power transmission is achieved, but environmental pollution is generated
Solution Approach 1:
The patent substitutes the diesel engine with an electric motor-driven system, eliminating the combustion process that produces waste gas and noise pollution. The electric drive system transmits power without generating harmful emissions, thereby resolving the environmental pollution issue while maintaining power transmission capability.
3Power
If diesel engine is used to drive fracturing plunger pump, then power transmission is achieved, but high initial purchase costs and high fuel consumption costs are incurred
Solution Approach 1:
The patent replaces the diesel engine with an electric motor system, shifting from fuel-based energy consumption to electricity-based energy consumption. This substitution reduces operating costs by eliminating diesel fuel purchases and reduces maintenance expenses associated with engine upkeep, thereby addressing the high fuel consumption costs and operational expenses.
4Power
If diesel engine is used to drive fracturing plunger pump, then power transmission is achieved, but high routine maintenance costs are incurred
Solution Approach 1:
The patent replaces the complex diesel engine system with a simpler electric motor-reducer-coupling system. This substitution reduces the number of moving parts and mechanical components that require routine maintenance, thereby lowering maintenance costs and simplifying repair operations while maintaining the power transmission function.
5Power
If rectifier transformer is used in power system, then voltage transformation is achieved, but device complexity and volume are increased
Solution Approach 1:
The patent extracts and eliminates the rectifier transformer from the power system by implementing a direct-connected configuration where the generator is directly connected to the rectifier. This removal simplifies the overall device structure, reduces volume, and decreases complexity while still achieving the necessary voltage transformation through the rectifier's internal circuitry.
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 fracturing system achieves a compact design, reduces environmental impact, lowers operational costs, and enhances energy efficiency by minimizing the use of internal combustion engines and optimizing energy storage and supply.
Implementation Method 1
a gas turbine engine
Implementation Method 2
a power system including at least one of the following: a generator
Implementation Method 3
one or more rectifiers... The power system is configured to output a voltage to the one or more rectifiers directly
Implementation Method 4
an energy storage unit that stores and supplies electrical energy
Data Source
AI summary
The present disclosure provides a fracturing system comprising fracturing equipment. The fracturing equipment comprises a power supply platform, a gas turbine engine, one or more rectifiers, and a power system comprising at least one of the following: a generator, an energy storage, and an electricity supplier. At least two of the gas turbine engine, the power system, and the one or more rectifiers are arranged on the power supply platform. A first end of the power system is connected to the gas turbine engine. A second end of the power system is connected to the one or more rectifiers. The power system is configured to output a voltage to the one or more rectifiers directly without passing through a rectifier transformer.