分布式发电的最佳位置,以最大限度地减少功耗损失,并提高电压稳定性
Samson Ademola Adegoke1, Yanxia Sun1, Adesola Sunday Adegoke2
1Department of Electrical and Electronic Engineering Science, University of Johannesburg, South Africa.
Heliyon
|November 18, 2024
概括
分布式发电 (DG) 的最佳位置可提高电力系统网络 (PSN) 的寿命和电压稳定性. 混合元启发算法有效地改善了电压配置,并减少了电气系统中的功耗损失.
科学领域:
- 电气工程 电气工程
- 电力系统分析 分析 分析
- 整合可再生能源的整合
背景情况:
- 电力系统网络 (PSN) 面临着严重的电压不稳定,原因是维护不足和财务限制.
- 基础设施老化和升级不足导致电力损失增加,威胁到系统可靠性.
- 电压崩是一个关键问题,需要减少损失和改善电压稳定性的策略.
研究的目的:
- 审查非传统分布式发电 (DG) 技术的好处,以提高PSN性能.
- 探索最佳的GD分配策略,以尽量减少能源和功率损失.
- 确定DG大小和位置的有效方法,以改进电压配置 (VPI).
主要方法:
- 对能源损失,功率损失和多目标优化进行全面审查.
- 对包括太阳能光伏 (PV) 和风力轮机在内的各种 DG 技术进行分析.
- 对总局整合的尺寸和配置方法的评估.
主要成果:
- 与传统系统相比,非传统的DG技术提供了经济,环境和技术上的优势.
- 最佳的DG位置可显著改善电压配置 (VPI) 并减少功耗损失.
- 混合元启发式算法在VPI和减少损失的GD配置方面表现出卓越的表现.
结论:
- 适当的GD配置最大限度地提高了分布式发电在电力系统中的好处.
- 集成DG有效地提高了电压稳定性,并最大限度地减少了系统功率损失.
- 该研究建议混合的元启发算法用于最佳的总局规划和实施.
相关概念视频
01:25Power System Distribution
226
Power system distribution involves delivering electrical energy from power plants to consumers through a network of transmission and distribution systems. The process begins at power plants, where energy from coal, gas, nuclear, water, and wind is converted into electrical energy. These plants use three-phase generators, typically rated between 50 to 1300 MVA, with terminal voltages ranging from a few kV to 20 kV, depending on the size and age of the units.
The transmission system is designed...
The transmission system is designed...
226
01:18Reducing Line Loss
144
In a three-phase circuit, line loss is an indicator of energy dissipated as heat due to the resistance of transmission lines. To address this, incorporating transformers into the system—a step-up transformer at the source and a step-down transformer at the load—is a strategic solution. Two three-phase transformers are introduced to improve this.
With a step-up transformer at the source, the voltage is increased, thereby reducing the current in the transmission lines since power loss...
With a step-up transformer at the source, the voltage is increased, thereby reducing the current in the transmission lines since power loss...
144
01:25Secondary Distribution
81
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...
81
01:21Generation of Three-Phase Voltage
357
A three-phase AC generator has a rotor with a rotating magnet placed within the stator mounted with the stationary three-phase winding to generate three-phase voltages via mutual induction. These windings are evenly distributed around the inner circumference of the stator and are arranged 120 electrical degrees apart. Three-phase stator windings consist of three separate coils or groups of coils, known as phases, each connected in Y (star) configuration or Delta configuration.
As the rotor...
As the rotor...
357
01:30Control of Power Flow
253
There are several methods to control power flow in power systems:
253
01:21Generator Voltage Control
125
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,...
125