Suzhou Electric Appliance Research Institute
期刊號(hào): CN32-1800/TM| ISSN1007-3175

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多端柔性直流輸電系統(tǒng)功率協(xié)調(diào)仿真研究

來源:電工電氣發(fā)布時(shí)間:2017-12-20 12:20 瀏覽次數(shù):9
多端柔性直流輸電系統(tǒng)功率協(xié)調(diào)仿真研究
 
高愛云1,朱林2,蔡澤祥2
(1 廣東水利電力職業(yè)技術(shù)學(xué)院 電力系,廣東 廣州 510635;2 華南理工大學(xué) 電力學(xué)院,廣東 廣州 510640)
 
    摘 要:運(yùn)用PSCAD軟件建立了三端柔性直流輸電系統(tǒng)模型,給出了系統(tǒng)控制策略,探討了無電壓下降控制、兩端電壓下降控制和三端電壓下降控制三種模式下在穩(wěn)態(tài)運(yùn)行、系統(tǒng)功率變化和交流電網(wǎng)接地故障時(shí)功率分配和協(xié)調(diào)控制問題。通過仿真計(jì)算給出了有功和直流電壓變化曲線,分析了不同控制模式的效果,結(jié)果表明三端均采用電壓下降控制時(shí)具有變化量小、動(dòng)態(tài)時(shí)間短等優(yōu)點(diǎn),適合多端系統(tǒng)的運(yùn)行和控制。
    關(guān)鍵詞:三端柔性直流輸電系統(tǒng);電壓下降控制;穩(wěn)態(tài)運(yùn)行;接地故障
    中圖分類號(hào):TM721.1     文獻(xiàn)標(biāo)識(shí)碼:A     文章編號(hào):1007-3175(2017)12-0009-04
 
Research on Power Coordination Simulation of Multi-Terminal Flexible High-Voltage Direct Current Transmission System
 
GAO Ai-yun1, ZHU Lin2, CAI Ze-xiang2
(1 Guangdong Technical College of Water Resources and Electric Engineering, Guangzhou 510635, China;
2 Electric Power College of South China University of Technology, Guangzhou 510640, China)
 
    Abstract: This paper established a model of three-terminal flexible high-voltage direct current transmission system by using the software PSCAD, gave the system control strategy and discussed the power allocation and coordination control problem under steady-state operation, power change and ground fault of alternative current grids with no voltage droop control, two-terminal voltage droop control or three-terminal voltage droop control modes. The simulating calculation provided the variation curves of active power and direct current voltage and the effectiveness of different control modes was analyzed. The results show that the three-terminal voltage droop control has the advantages of smaller change and shorter dynamic time. This control mode is fit for the operation and control of multi-terminal system.
    Key words: three-terminal flexible high-voltage direct current transmission system; voltage droop control; steady-state operation; ground fault
 
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