基本负载和灵活增强的地热系统的电源特性
Mohammad J Aljubran1, Roland N Horne2
1Energy Science and Engineering, Stanford University, Building 367, Stanford, California, 94305, USA. aljubrmj@stanford.edu.
Scientific reports
|July 31, 2024
概括
改进的地热系统 (EGS) 在美国各地提供了重要的电力供应潜力. 灵活运营可以使EGS作为可调度可再生能源更具竞争力和可扩展性.
科学领域:
- 地质物理学 地质物理学
- 能源系统分析 能源系统分析
- 可再生能源技术可再生能源技术
背景情况:
- 增强地热系统 (EGS) 是一个有前途的可再生能源,具有巨大的未开发潜力.
- 了解EGS的技术经济可行性和电力供应能力对于其广泛采用至关重要.
- 以前的评估可能没有完全捕捉到EGS在各种操作场景和先进钻探技术下的潜力.
研究的目的:
- 调查EGS在连续的美国的技术经济可行性和电力供应潜力.
- 评估灵活地热调度和先进钻探对EGS经济性和可扩展性的影响.
- 确定具有最高EGS容量潜力的地区.
主要方法:
- 使用了一种新的地下温度模型和EGS项目生命周期的详细模拟.
- 分析了 EGS 在常规情况下的业务表现和灵活的调度 (井头压缩,发电厂绕道).
- 基于EGS近期项目实施的综合先进钻井速度.
主要成果:
- 估计EGS供应能力为82,945GW,在业务正常的情况下,电力成本 (LCOE) 比传统来源低.
- 灵活的地热调度将EGS供应能力估计增加到184,112GW.
- 在美国西部和西南部地区,特别是加利福尼亚州,俄勒冈州,内华达州,蒙大拿州和德克萨斯州发现了重要的EGS潜力.
- 预计先进的钻探速度将平均提高25.1%的LCOE.
结论:
- 伊格斯在整个美国拥有相当大的电力供应潜力.
- 灵活的操作是提高EGS竞争力和可扩展性的关键.
- 通过技术进步,EGS可以成为具有竞争力和可扩展性的可调度可再生能源.
更多相关视频
10:52Design, Instrumentation and Usage Protocols for Distributed In Situ Thermal Hot Spots Monitoring in Electric Coils using FBG Sensor Multiplexing
Published on: March 8, 2020
5.8K
00:13Using Flexible Gold-Titanium Reaction Cells to Simulate Pressure-Dependent Microbial Activity in the Context of Subsurface Biomining
Published on: October 5, 2019
6.6K
相关概念视频
01:30Control of Power Flow
259
There are several methods to control power flow in power systems:
259
01:28Load-frequency control
144
Load-frequency control (LFC) is vital for maintaining power system stability, ensuring that frequency and power flows remain within acceptable limits during load changes. Turbine-governor control eliminates rotor accelerations and decelerations following load changes. However, a steady-state frequency error persists when the change in the turbine-governor reference setting is zero. In an interconnected power system, each area agrees to export or import a scheduled amount of power through...
144
01:17Turbine-Governor Control
189
Turbine-governor control is crucial for maintaining power system stability by balancing turbine mechanical power output with electrical load demand. This mechanism ensures that generator frequency and rotor speed are within acceptable limits during load variations. Turbine-generator units store kinetic energy due to their rotating masses; this energy is released to meet the load requirement when the load increases. The electrical torque of turbines rises to meet the demand, whereas the...
189
01:21Generator Voltage Control
137
Generator voltage control is crucial for maintaining the stable operation of synchronous generators and wind turbines. In older models, a DC generator driven by the rotor delivers DC power to the rotor's field winding, and the power is transferred through slip rings and brushes. In the latest models, static or brushless exciters are used. Static exciters rectify AC power from the generator terminals and then transfer the DC power directly to the rotor. Brushless exciters, on the other hand,...
137
01:15Power in a Three-Phase Circuit
304
Three-phase systems have two configurations: the wye and delta. A star configuration can be three or four wires; in a delta configuration, the components are connected in a closed loop. Instantaneous power refers to the power value at a precise moment, and in a balanced three-phase system, it is constant. This is because the sum of the instantaneous powers in the three phases remains steady over time, despite individual fluctuations, due to the symmetry and phase relationship. The total...
304
01:27Transformers in Distribution System
99
Transformers in distribution systems can be broadly categorized into distribution substation transformers and other distribution transformers. They are crucial for stepping down high transmission voltages to levels suitable for distribution and end-user applications.
Distribution substation transformers come in various ratings and typically use mineral oil for insulation and cooling. To prevent moisture and air from entering the oil, some transformers use an inert gas like nitrogen to fill the...
Distribution substation transformers come in various ratings and typically use mineral oil for insulation and cooling. To prevent moisture and air from entering the oil, some transformers use an inert gas like nitrogen to fill the...
99