电能和光伏透对电网的影响,具有保守的电压调节和反应电压补偿
Navinesshani Permal1, Farrukh Nagi2, Marayati Marsadek2
1Faculty of Engineering and Built Environment (FETBE), UCSI University, Kuala Lumpur, Malaysia.
ISA transactions
|January 23, 2025
概括
保护电压降低 (CVR) 和二次变压控制器 (SVC) 提高了电网稳定性,电动汽车 (EV) 和光伏 (PV) 的透率很高. 它们的联合使用保持电压,满足需求,提高效率.
科学领域:
- 电气工程 电气工程
- 可再生能源系统可再生能源系统
- 电力系统的稳定性 电力系统的稳定性
背景情况:
- 越来越多的可再生能源集成,特别是光伏 (PV) 系统,对电网稳定性提出了挑战.
- 同时的电动汽车 (EV) 充电和光伏发电可能导致电网过电压和反应电力损失,影响电力质量.
- 保护电压降低 (CVR) 是一种节能技术,它降低运行电压以增加发电率.
研究的目的:
- 分析EV和PV联合透对电网电压稳定性的影响.
- 评估保护电压降低 (CVR) 和二次变频控制器 (SVC) 在缓解电网不稳定问题方面的有效性.
- 为了比较电网电压稳定性和没有CVR在不同的电动汽车透水平和光伏托管能力下.
主要方法:
- 在IEEE 33总线系统上进行了模拟研究.
- 分析了系统的电压稳定性,并没有实施CVR.
- 电动汽车透,光伏托管能力和SVC补偿的影响与CVR一起进行了评估.
主要成果:
- 增加的光伏透导致了电网过电压,而电动汽车充电导致了反应功率吸收和电网不稳定.
- 通过同时使用CVR和SVC,有效地保持电网电压在运行范围内.
- 结合的方法成功地满足了负载和电动汽车的需求,提高了功率效率,并实现了更高的光伏透.
结论:
- 在高可再生能源和电动汽车透率下,CVR和SVC的综合应用是提高电网稳定的可行策略.
- 这种方法解决了诸如过电压和反应功率损失等挑战,确保可靠的电力供应.
- 使用CVR和SVC优化电网运行支持增加可再生能源的整合和电动移动.
相关概念视频
Power Factor Correction
155
The power transmission to a factory involves the transfer of apparent power, a combination of active and reactive power. The power factor measures how effectively electrical power is converted into useful work output. The ratio of the real power (KW) that does the work to the apparent power (KVA) supplied to the circuit.
155
Control of Power Flow
251
There are several methods to control power flow in power systems:
251
Generator Voltage Control
117
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,...
117
Conservation of AC Power
325
The principle of power preservation is applicable to both ac and dc circuits. This principle, when applied to AC power, asserts that the complex, real, and reactive powers produced by the source are equal to the total complex, real, and reactive powers absorbed by the loads. When two load impedances are connected in parallel to an ac source V, the complex power provided by the source can be calculated using the relation
325
Maximum Power Flow and Line Loadability
94
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.
94
Three-Phase Voltages
216
A three-phase generator produces three voltages that are equal in magnitude but have a phase difference of 120 degrees. This identical magnitude and equal phase separated voltages are known as the balanced voltages and help to minimize power loss while ensuring a steady delivery of energy to connected loads. As voltage sources in a three-phase system can be configured in a wye or a delta formation, the loads connected to these systems can also be arranged in either configuration. This...
216


