通过重组网络拓来促进电网同步
Xuefeng Li1, Wenjie Wei1, Zhigang Zheng1
1Institute of Systems Science, Huaqiao University, Xiamen 361021, China and College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China.
Chaos (Woodbury, N.Y.)
|June 23, 2023
概括
优化分布式电网需要重组拓. 一个新的频率相关性优化方案通过促进发电机-消费者连接来提高同步性,为相连贯方法提供了更简单的替代方案.
科学领域:
- 电气工程 电气工程
- 复杂的系统复杂的系统.
- 网络科学 网络科学
背景情况:
- 分布式电网需要优化同步以保持稳定性.
- 重组网格拓是提高同步性的关键方法.
- 节点链路的双重属性和连接属性影响电网动态.
研究的目的:
- 建议和验证分布式电网拓的频率相关性优化方案.
- 调查拓结构重组对电网同步性的影响.
- 将拟议的方案与现有的相连贯优化方法进行比较.
主要方法:
- 开发一个针对节点频率相关函数的频率相关优化方案.
- 在稀疏和密集电网网络中应用拓优化.
- 将频率相关性优化与相连贯性优化进行比较.
主要成果:
- 成功优化了对稀疏和密集网络的拓.
- 优化的拓显示出更多的发电机-消费者连接,有利于去中心化.
- 频率相关性优化证明了与相连贯性优化的兼容性.
结论:
- 在电网中分散发电机的分布提高了同步性.
- 频率相关性优化方案是改善电网同步的高效和简单方法.
- 这些发现有助于设计现代,分散的电网,使用多种能源.
相关概念视频
01:24Fast Decoupled and DC Powerflow
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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:
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01:30Control of Power Flow
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There are several methods to control power flow in power systems:
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01:25Power System Distribution
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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...
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01:23Maximum Power Flow and Line Loadability
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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.
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01:26The Power Flow Problem and Solution
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Power flow problem analysis is fundamental for determining real and reactive power flows in network components, such as transmission lines, transformers, and loads. The power system's single-line diagram provides data on the bus, transmission line, and transformer. Each bus k in the system is characterized by four key variables: voltage magnitude Vk, phase angle δk, real power Pk, and reactive power Qk. Two of these four variables are inputs, while the...
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01:16Zones of Protection
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In power systems, the entire setup is divided into protective zones to isolate faults and protect the rest of the network. These zones include generators, transformers, buses, transmission lines, distribution lines, and motors. Each zone can be visualized as a separate room in a house, with each room protected by its own circuit breaker.
Protective zones are defined by closed dashed lines, containing one or more components. A key characteristic of these zones is the strategic placement of...
Protective zones are defined by closed dashed lines, containing one or more components. A key characteristic of these zones is the strategic placement of...
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