西北首套直流融冰裝置工程啟動評價分析
劉巍,崔力心,郭文科,陳仕彬,郝如海,倪賽賽
(國網甘肅省電力公司電力科學研究院,甘肅 蘭州 730050)
摘 要:甘肅隴南地區(qū)直流融冰裝置的建成投運,極大地增強了該地區(qū)線路抗覆冰能力。應用Matlab軟件對330 kV 曬都線路搭建仿真模型進行仿真分析和現場電能質量測試結果驗證;同時在現場啟動過程中,對整流變空載投切,線路重合閘后加速保護誤動原因分析,并給出了解決涌流跳閘措施,有效減少了變電站整流變裝置開關跳閘次數,縮短了停電時間,提高了曬都線供電可靠性。
關鍵詞:固定式直流融冰裝置;融冰原理;電能質量;重合閘后加速;冰災;應用效果
中圖分類號:TM422 文獻標識碼:A 文章編號:1007-3175(2016)07-0034-04
Evaluation Analysis of First DC-Based Deicing
Device in Northwest China
LIU Wei , CUI Li-xin , GUO Wen-ke , CHEN Shi-bin, HAO Ru-hai, NI Sai-sai
(State Grid Gansu Electric Power Research Institute, Lanzhou 730050, China)
Abstract: DC-based deicing devices which were put into operation in Longnan of Gansu province greatly enhanced the anti-icing capability in the area. The software Matlab was used to carry out simulation analysis for the model of 33 0 kV Shaidu lines and to verify the test results of the current power quality. Meanwhile, the rectifier was unloaded, the electric brake was turned on in the process of starting the equipment and the reason of protection mal- operation was analyzed rapidly. This paper gave the measures of flashy flow tripping operation, which effectively reduced the number of tripping of the switch in the transformer substation, shortened the outage time and improved the reliability of power supply.
Key words: fixed DC-based deicing device; deicing principle; power quality; acceleration after reclosing; ice damage; application effect
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