[1]榮 飛,黃 韬,饒 宏,等.MMC換流閥最優三次諧波注入方法研究[J].高壓電器,2019,55(07):20-26.[doi:10.13296/j.1001-1609.hva.2019.07.004 ]
 RONG Fei,HUANG Tao,RAO Hong,et al.Optimal Method of Third Harmonic Injection to MMC Value[J].High Voltage Apparatus,2019,55(07):20-26.[doi:10.13296/j.1001-1609.hva.2019.07.004 ]
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MMC換流閥最優三次諧波注入方法研究()
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《高壓電器》[ISSN:1001-1609/CN:61-11271/TM]

卷:
第55卷
期數:
2019年07期
頁碼:
20-26
欄目:
研究與分析
出版日期:
2019-07-31

文章信息/Info

Title:
Optimal Method of Third Harmonic Injection to MMC Value
作者:
榮 飛1 黃 韬1 饒 宏2 周保榮2 黃守道1
(1. 湖南大學電氣與信息工程學院, 長沙 410082; 2. 直流輸電技術國家重點實驗室,南方電網科學研究院有限責任公司, 廣州 510620)
Author(s):
RONG Fei1 HUANG Tao1 RAO Hong2 ZHOU Baorong2 HUANG Shoudao1
(1. College of Electrical and Information Engineering, Hunan University, Changsha 410082, China; 2. State Key Laboratory of HVDC, Electric Power Research Institute, China Southern Power Grid, Guangzhou 510620, China)
關鍵詞:
MMC 三次諧波 閥損耗 冗余度 優化配置
Keywords:
modular multilevel converter 3rd harmonic valve losses redundancy degree optimal allocation
DOI:
10.13296/j.1001-1609.hva.2019.07.004
摘要:
損耗是衡量柔性直流輸電系統性能的關鍵指標之一。對調制波疊加三次諧波可以提高換流閥直流電壓利用率,還可以增大換流閥的冗余度,提高可靠性。推導了疊加三次諧波後換流閥的損耗計算公式,詳細分析了三次諧波疊加率對換流閥損耗的影響。計算結果表明,隨著三次諧波疊加率的增大,換流閥損耗逐漸降低,但是此時的冗余度與損耗並不是最優值,因此通過遺傳算法對損耗與冗余度進行了優化配置以兼顧損耗與冗余度。結果表明:當三次諧波疊加量達到24.3%時的時候損耗與冗余度取得性能平衡,此時總損耗爲1.485%,冗余度爲12.7%。
Abstract:
The loss of the converter valve is one of the key indexes to evaluate the VSC HVDC transmission system. In this paper, in order to improve the availability of VSC HVDC converter valve, the three harmonic wave is injected to the modular wave. By this way, the redundancy degree of the converter valve can be improved. The formula of the losses of converter valve is obtained under this way. The impact of the three harmonic superposition rate on the losses of converter valve is discussed in detail. Example results show that the losses of converter valve are reduced with the increase of three harmonic superposition rate. But the redundancy degree and losses is not enough good at this time. So we get the optimal allocation between redundancy degree and losses by genetic algorithm. The results show that when the three harmonic superposition rate reaches 24.3% when the losses and redundancy get performance balance, then the total loss is 1.485% and redundancy degree is 12.7%.

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備注/Memo

備注/Memo:
榮 飛(1978—),男,博士,副教授,主要從事電力電子變流技術、新能源系統的研究。收稿日期:2018-12-05; 修回日期:2019-02-15 基金項目:國家重點研發計劃(2016YFB0901001)。 Project Supported by National Key Research and Development Programme(2016YFB0901001).
更新日期/Last Update: 2019-07-15