电动汽车充电需求对发电网拥堵的影响
1Civil and Environmental Engineering, Institute of Transportation Studies, University of California, Davis, CA 95616.
概括
加利福尼亚州加利福尼亚州加利福尼亚州.
科学领域:
- 电气工程 电气工程
- 能源系统分析 能源系统分析
- 运输政策 运输政策
背景情况:
- 加利福尼亚州在电动汽车 (EV) 采用方面处于领先地位,实施了影响电力分配系统的政策.
- 不受控制的电动汽车充电对该州的电力基础设施容量和稳定性构成重大挑战.
研究的目的:
- 为了调查不受控制的电动汽车充电对加利福尼亚的配电网络的大规模,高颗粒度的影响.
- 预测未来的基础设施需求和相关成本,并探索减轻电动汽车充电影响的策略.
主要方法:
- 利用了结合旅行需求,电动汽车采用模型和现实世界电动汽车充电数据的投影.
- 在细分层面分析了全州对电力配电网络的影响.
- 评估到2045年的基础设施升级要求和成本影响.
主要成果:
- 到2035年,50%的料器需要升级,到2045年,67%的料器需要升级.
- 到2045年,加利福尼亚的配电系统需要25吉瓦的容量升级,耗资600亿至200亿美元.
- 尽管成本高昂,但到2045年,由于消费增加,电价可能会下降0.01-0.06美元/千瓦时,住宅区比商业区更需要升级.
结论:
- 为了适应加利福尼亚州的电动汽车增长,需要大大升级配电基础设施.
- 转移家庭充电需求可能会降低基础设施升级成本.
- 加利福尼亚州在电动汽车整合方面的挑战为全球趋势和未来电网管理需求提供了洞察力.
相关概念视频
Charge and Current
2.8K
Electric charge is the most fundamental quantity in an electric circuit. The effects of electric charge are encountered daily, such as when a wool sweater sticks to the human body or when a person receives a shock while walking on a carpet.
Charge is an inherent property of the atomic particles that make up matter and is measured in units called coulombs (C). Matter is composed of atoms, each consisting of electrons, protons, and neutrons. Electrons have a negative charge (-e), while protons...
Charge is an inherent property of the atomic particles that make up matter and is measured in units called coulombs (C). Matter is composed of atoms, each consisting of electrons, protons, and neutrons. Electrons have a negative charge (-e), while protons...
2.8K
Fast Decoupled and DC Powerflow
191
The fast decoupled power flow method addresses contingencies in power system operations, such as generator outages or transmission line failures. This method provides quick power flow solutions, essential for real-time system adjustments. Fast decoupled power flow algorithms simplify the Jacobian matrix by neglecting certain elements, leading to two sets of decoupled equations:
191
Control of Power Flow
266
There are several methods to control power flow in power systems:
266
Secondary Distribution
84
Secondary distribution systems provide electrical energy at the utilization voltage levels from distribution transformers to customer meters. Typical secondary voltages in the United States include 120/240 V for residential use, 208Y/120 V for residential and commercial use, and 480Y/277 V for industrial and high-rise commercial use.
In residential areas, 120/240 V single-phase, three-wire service is commonly used for lighting, outlets, and large appliances. Urban areas with high-density loads...
In residential areas, 120/240 V single-phase, three-wire service is commonly used for lighting, outlets, and large appliances. Urban areas with high-density loads...
84
Energy Associated With a Charge Distribution
1.5K
The work done to bring a charge through a distance r is given by the potential difference between the initial and the final position. To assemble a collection of point charges, the total work done can be expressed in terms of the product of each pair of charges divided by their separation distance, defined with respect to a suitable origin. Solving this expression gives the energy stored in a point charge distribution.
1.5K
Maximum Power Flow and Line Loadability
107
The maximum power flow for lossy transmission lines is derived using ABCD parameters in phasor form. These parameters create a matrix relationship between the sending-end and receiving-end voltages and currents, allowing the determination of the receiving-end current. This relationship facilitates calculating the complex power delivered to the receiving end, from which real and reactive power components are derived.
107


