程跳逆功率保護拒動原因分析及改進技術(shù)研究
發(fā)布時間:2018-10-22 08:10
【摘要】:目前國內(nèi)不同區(qū)域的幾臺660 MW機組陸續(xù)發(fā)生發(fā)電機程跳逆功率保護拒動事故。通過對保護裝置的動作邏輯及計算原理進行分析,結(jié)合現(xiàn)場運行的實際情況對拒動裝置進行校驗,發(fā)現(xiàn)保護裝置在功率平面上的實際動作曲線與理想動作曲線有較大偏差。根據(jù)逆功率保護算法原理分析該偏差來自功率因數(shù)角的采樣誤差,由此面向裝置生產(chǎn)廠家給出了功率因數(shù)角的優(yōu)化計算方法。同時針對采用程跳逆功率保護的用戶提出了在無功水平很低時進行打閘操作的最優(yōu)運行策略。
[Abstract]:At present, several 660- MW units in different regions of our country have occurred the failure accident of generator range hopping power protection one after another. Based on the analysis of the logic and calculation principle of the protection device, combined with the actual situation of the field operation, it is found that the actual action curve of the protection device in the power plane has a large deviation from the ideal action curve. According to the principle of inverse power protection algorithm, the sampling error from power factor angle is analyzed, and the optimal calculation method of power factor angle is presented for the equipment manufacturer. At the same time, the optimal operation strategy is put forward for the users who adopt range hopping inverse power protection when the reactive power level is very low.
【作者單位】: 華能陜西渭南熱電有限公司;河南機電職業(yè)學(xué)院;西安熱工研究院有限公司;
【基金】:秦嶺發(fā)電廠科技協(xié)會基金資助
【分類號】:TM621.3
本文編號:2286604
[Abstract]:At present, several 660- MW units in different regions of our country have occurred the failure accident of generator range hopping power protection one after another. Based on the analysis of the logic and calculation principle of the protection device, combined with the actual situation of the field operation, it is found that the actual action curve of the protection device in the power plane has a large deviation from the ideal action curve. According to the principle of inverse power protection algorithm, the sampling error from power factor angle is analyzed, and the optimal calculation method of power factor angle is presented for the equipment manufacturer. At the same time, the optimal operation strategy is put forward for the users who adopt range hopping inverse power protection when the reactive power level is very low.
【作者單位】: 華能陜西渭南熱電有限公司;河南機電職業(yè)學(xué)院;西安熱工研究院有限公司;
【基金】:秦嶺發(fā)電廠科技協(xié)會基金資助
【分類號】:TM621.3
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