零序電抗 的英文怎麼說
中文拼音 [língxùdiànkàng]
零序電抗
英文
null sequence reactance-
The development of a visual short circuit software under ptcad2000 is presented in this paper, as well as the system structure, the definition of the data structure, the interface to ptcad2000, the conversion of the original wiring diagram of power network to calculable power network, the implement of three sequence network, the implement of impendence matrix and admittance matrix of power network considering the zero sequence mutual inductances among lines, and the implement of short circuit calculation by using computer
本文介紹了在ptcad2000平臺下短路電流可視化計算軟體的開發。介紹了軟體的系統結構、數據結構定義、與ptcad2000平臺的介面、電力系統原始接線圖轉成等值可計算網路、序網的生成、考慮零序互感線路阻抗時電網導納矩陣和阻抗矩陣的生成，以及故障點短路電流計算的計算機實現。The research job includes bringing a project about fault calculation, using node impedance matrix as maths model of network to derive the arithmetic based on the fundamental of modifying impedance matrix by adding the branch, building the whole database with micosoft access. the whole project is realized with visual c + + 6. 0. it is applied to au hui electric network, and is proved correct
本文首先根據系統的要求，綜合考慮各種運行方式變化，提出合理的零序電流，分支系數的計算方案；然後採用節點阻抗矩陣作為系統的數學模型，推導出基於支路追加法的阻抗矩陣快速補償優化演算法，從而實現計算方案；最後以micosoftaccess為工具設計出完整的故障計算數據庫。According to zero sequence voltage distribution from system zero sequence impedance to shunt reactor zero sequence in zero sequence circuit, the zero sequence voltage at the terminal of shunt reactor and the zero sequence compensating voltage at neutral are compared in the scheme
即根據零序網路中零序電壓在系統零序阻抗和電抗器零序阻抗上的分佈情況，通過直接比較電抗器首端零序電壓與補償到電抗器末端中性點的零序補償電壓的幅值大小，來判別電抗器匝間故障。But due to the existence of the fault resistance, the branch current, the zero sequence mutual coupling and so on, the apparent impedances and protection scope of distance protection will change, thereby affecting the performance of distance protection and the safety operation of power system
然而，由於過渡電阻、分支電流和零序互感等因素的影響，會改變距離保護測量阻抗的大小，造成距離保護動作范圍的擴大與縮小，從而影響距離保護的性能，威脅電力系統的安全運行。Having lower and unified positive ( negative ) and zero sequence impedance, which benefits to improve the power supply quality
具有較低而有均勻的正（逆）充和零序阻抗，它有利於改善供電品質。分享友人