酒泉750 kV超高壓換流站關(guān)鍵設(shè)備試驗技術(shù)研究
陳仕彬1，王曉飛1，呂斌2，楊玉庭2，史萬偉2
（1 國網(wǎng)甘肅省電力公司電力科學(xué)研究院，甘肅 蘭州 730050；2 蘭州隴能電力科技有限公司，甘肅 蘭州 730050）
摘 要：針對于750 kV超高壓（EHV）換流站關(guān)鍵設(shè)備的安裝可靠性和穩(wěn)定運行情況，提出一種能夠?qū)崿F(xiàn)750 kV電壓等級EHV換流站關(guān)鍵設(shè)備性能測試的方法，該方法綜合考慮試驗效率和成本經(jīng)濟(jì)性，綜合選取了試驗電源的最佳接入點并設(shè)計了對應(yīng)的接線方式，并以此為基礎(chǔ)構(gòu)建了換流站關(guān)鍵設(shè)備通流時的短路電流計算模型，根據(jù)計算結(jié)果對換流站關(guān)鍵設(shè)備通流所需的試驗電源和試驗用表進(jìn)行了優(yōu)化選擇，以EHV換流站調(diào)相機(jī)系統(tǒng)和電流互感器（CT）為研究對象，對其保護(hù)配置穩(wěn)定運行情況、極性正誤、變比結(jié)果及相位偏置情況進(jìn)行了分析，通過對酒泉750 kV換流站的調(diào)相機(jī)系統(tǒng)和CT進(jìn)行通流試驗，實驗結(jié)果表明，提出的方法經(jīng)過一次通流即可使短路電流通過調(diào)相機(jī)系統(tǒng)母線、短引線、主變壓器及調(diào)相機(jī)CT，首次實現(xiàn)了國內(nèi)750 kV電壓等級EHV換流站調(diào)相機(jī)系統(tǒng)等關(guān)鍵設(shè)備的順利調(diào)試。
關(guān)鍵詞：酒泉換流站；調(diào)相機(jī)系統(tǒng)；短路電流；通流試驗
中圖分類號：TM835 文獻(xiàn)標(biāo)識碼：A 文章編號：1007-3175(2019)11-0053-04
Research on Key Equipment Testing Technology of 750 kV EHV Converter Station in Jiuquan
CHEN Shi-bin1, WANG Xiao-fei1, LYU Bin2, YANG Yu-ting2, SHI Wan-wei2
（1 Electric Power Research Institute, State Grid Gansu Electric Power Company, Lanzhou 730050, China;
2 Lanzhou Longneng Electric Power Science＆Technology Ltd, Lanzhou 730050, China）
Abstract: Aiming at the installing reliability and stability situation of key equipments in 750 kV EHV converter station, this paper proposed a kind of method to realize the key equipments performance test in EHV converter station of 750 kV voltage classes. This method comprehensively considered the test efficiency and economy of the test, selected the optimum access point of experimental power supply and designed the corresponding wiring mode.On the basis of this, this paper established the short circuit calculation model when there were currents passing through in the key equipment of EHV converter station. According to the calculation result, this paper carried out the optimization selection for the testing power supply and forms needed when there were currents passing through in the key equipment of EHV converter station.Taking the synchronous condenser system of EHV converter station and CT as the research object, this paper analyzed its protection configuration stable operation situation, polarity true-false, turns ratio result and phase bias situation.The synchronous condenser system in 750 kV EHV converter station of Jiuquan and the CT were carried out currents passing through tests.The experimental results show that one time currents passing through can make the short circuit get through the synchronous condenser system busbar, the short leg, the main transformer and the synchronous condenser CT.It is the first time that the synchronous condenser systems in EHV converter station of 750 kV voltage classes at home etc key equipments have been debugged smoothly.
Key words: Jiuquan converter station; synchronous condenser system; short circuit current; flow-through test
參考文獻(xiàn)
[1] 中國氣象局. 中國風(fēng)能資源評估報告[R]. 北京：氣象出版社，2010.
[2] 中國甘肅網(wǎng). 我國首條大規(guī)模清潔能源輸送特高壓直流輸電工程酒湖特高壓直流輸電工程全線投產(chǎn)[EB/OL].(2017-06-26)[2018-10-01].http://gansu. gscn.com.cn/system/2017/06/26/011733685.shtml.
[3] 饒宏， 張東輝， 趙曉斌， 等. 特高壓直流輸電的實踐和分析[J]. 高電壓技術(shù)，2015，41(8)：2481-2488.
[4] 李明節(jié). 大規(guī)模特高壓交直流混聯(lián)電網(wǎng)特性分析與運行控制[J]. 電網(wǎng)技術(shù)，2016，40(4)：985-991.
[5] 王雅婷，張一馳，周勤勇，等. 新一代大容量調(diào)相機(jī)在電網(wǎng)中的應(yīng)用研究[J]. 電網(wǎng)技術(shù)，2017，41(1)：22-28.
[6] 楊萬開，王明新，曾南超，等. 靈寶背靠背直流工程系統(tǒng)調(diào)試中的關(guān)鍵技術(shù)分析[J]. 電網(wǎng)技術(shù)，2007，31(10)：32-37.
[7] 冷歐陽，田立山. 特高壓直流換流站保護(hù)裝置調(diào)試要點淺析[J]. 東北電力技術(shù)，2018(5)：25-27.
[8] 鄧潔清，項巍.500 kV主變一次通流試驗?zāi)Ｐ图胺桨傅难芯縖J]. 電力系統(tǒng)保護(hù)與控制，2008，36(7)：92-95.
[9] 郭亮， 潘本仁， 王冠南， 等. 洪屏抽水蓄能電站500 kV系統(tǒng)一次通流方案設(shè)計[J]. 江西電力，2016，40(6)：2-5.
[10] 郭強(qiáng). 試驗電源對變壓器低電壓短路阻抗試驗的影響[J]. 電工電氣，2017(12)：56-58.
[11] 電力行業(yè)高壓直流輸電技術(shù)標(biāo)準(zhǔn)化技術(shù)委員會. 直流換流站二次電氣設(shè)備交接試驗規(guī)程：DL/T 1129—2009[S]. 北京：中國電力出版社，2009：4.
