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

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孤網電力負荷平衡技術及應用

來源:電工電氣發(fā)布時間:2017-11-17 09:17 瀏覽次數:8
孤網電力負荷平衡技術及應用
 
趙中原,李曉明, 李成博,王新寶
(南京南瑞繼保電氣有限公司, 江蘇 南京 211102)
 
    摘 要:企業(yè)自備電廠在外網聯(lián)接或者孤網運行時,存在電壓穩(wěn)定、頻率平衡問題。提出基于晶閘管的快速、靈活控制的電子負荷技術,通過三層策略控制來解決孤網平衡問題。該方案以電子動態(tài)負荷調節(jié)為平衡主要手段,同時配置孤網穩(wěn)定裝置,協(xié)調發(fā)電機組和負荷數量,另外還配置了頻率緊急控制作為最后防線。應用效果表明,電子負荷快速平滑跟蹤沖擊性負荷動態(tài)變化,可以使孤網高可靠性運行、頻率穩(wěn)定。
    關鍵詞:孤網;電子負荷;電網穩(wěn)定
    中圖分類號:TM762     文獻標識碼:B     文章編號:1007-3175(2017)11-0033-05
 
Power Load Balancing Technique and Application of Islanded Network
 
ZHAO Zhong-yuan, LI Xiao-ming, LI Cheng-bo, WANG Xin-bao
(Nari-Relays Electric Co., Ltd, Nanjing 2111 02, China)
 
    Abstract: Enterprise-owned power plants usually get voltage stability and frequency balance problem when accessing the external network or operating in an islanded mode. This paper proposed a thyristor-based electronic type of load with fast and flexible controllable features. Three-layer control strategy as a total solution was presented to effectively solve the problem of islanded network. The main balancing means of this strategy is to adjust electronic dynamic load, to configure islanded network stable device, to coordinate generator sets and load quantity and to configure frequency emergency control as the last defensive line. The application result shows that the electronic type of load is a fast and smooth way to balance the dynamic change of the impact load, which can make the isolated network operate in high reliability and get frequency in stable range.
    Key words: islanded network; electronic load; power grid stability
 
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