Description: 高压直流输电线路电磁场的计算，指导高压直流输电线路的铺设。计算安全上线-HVDC transmission line calculation of electromagnetic fields to guide the laying of high voltage direct current transmission lines. Computationally secure on-line Platform: |
Size: 2048 |
Author:llc |
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Description: 本文基于宁东直流输电工程的实际设备的数据,在PSCAD/EMTDC中建立了包含换流器、换流变压器、直流滤波器、交流滤波器和无功补偿设备、平波电抗器以及直流输电线路的模型,并按照CIGRE直流输电系统基准模型的典型控制方式,建立了初步的直流输电三级控制结构,并分析了控制逻辑中PI环节参数的选择问题：基于BPA仿真模型中的元件模型与参数,在PSCAD/EMTDC中建立了山东电网500kV动态等值之后的交流系统模型,包括发电机、励磁机、调速器、电力系统稳定器、变压器、负荷以及输电线路等设备的模型,利用PSCAD/EMTDC自定义开发功能,用C语言开发了励磁系统自定义饱和模块。-Based on the data of the actual device Ningdong HVDC projects established comprising converter, converter transformers, DC filters, AC filter and reactive compensation devices, smoothing reactors and DC transmission line in PSCAD/EMTDC in the model and follow the typical control mode CIGRE HVDC system reference model, the establishment of a preliminary three HVDC control structure, and analyze the selection control logic PI link parameters: BPA-based simulation model component model and parameters in PSCAD/EMTDC established a dynamic equivalence Shandong power grid after the 500kV AC system model, including the model generator, exciter, governor, power system stabilizer, transformers, load and power transmission lines and other equipment, the use of PSCAD/EMTDC custom development capabilities, using C language to develop custom saturation block the excitation system. Platform: |
Size: 9858048 |
Author:Zerope |
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Description: There is a possibility that firrther splits in our ac networks might be convenient or
necessary. Such splits may be desired to prevent loop flows and other transmission constraints
fbtstrating open and efficient use of the transmission grid. A purely technical reason could
also make further divisions desirable. That is, increased regional generating capacity without a
corresponding increase in transmission capacity across key transmission ‘interfaces between
generation/load regions could lead to reduced synchronizing capability on those interfaces.
Section 8 addresses two examples where future synchronizing capability between regions interior
to the eastern U.S. network might dimini& to levels low enough to warrant some action. In such
cases, it may prove more economical to split the ac network and reconnect at selected buses with
back-to-back dc links than it would be to add new ac lines or reinforce the existing ac lines. Platform: |
Size: 6099968 |
Author:ash |
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Description: DC wind farm network. So far, all existing offshore wind farms have an ac collection system, and the collected power in the offshore wind farm is sent to an onshore ac grid through high-voltage ac (HVAC) or DC (HVDC) transmission lines. However, future offshore wind farms may use dc also for power collection. Platform: |
Size: 74752 |
Author:ali |
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Description: 直流输电比起交流输电更适合进行远距离高压输电，基于PSCAD电磁暂态仿真软件构建了交流系统、换流变圧器、换流器、交-直流滤波器、平波电抗器及直流输电线路等的仿真模型，并以此搭建了500kV高压直流输电系统仿真模型，验证了该模型的准确性。(DC transmission is more suitable for long-distance transmission than AC transmission, the electromagnetic transient simulation software PSCAD is built based on the simulation model of AC system, converter transformer, voltage converter, AC / DC filter, smoothing reactor and DC transmission lines, and to build a 500kV HVDC system simulation model validation the accuracy of the model.) Platform: |
Size: 8192 |
Author:naijgnaw1978
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