本文選題：水輪發(fā)電機　切入點：換位　出處：《電工技術學報》2017年17期 　論文類型：期刊論文

【摘要】：針對大型水輪發(fā)電機定子繞組換位線棒股線電流及環(huán)流損耗的計算問題,提出了一種解析計算方法——改進漏感電動勢法,解決了現(xiàn)有計算定子換位線棒股線電流分布及環(huán)流損耗的漏感電動勢法(又稱漏感電勢法)中存在的漏磁場假設不合理、電路約束不完整以及忽略了股線的實際換位路徑等問題。將定子線棒中的每根股線看成由股線電阻和漏感電動勢組成,分別給出了槽部漏感電動勢和端部漏感電動勢的計算方法。以一臺140 MW大型水輪發(fā)電機為例,采用改進漏感電動勢法計算360°全換位和不足換位時的每根股線的電流分布,進而求解定子線棒的環(huán)流損耗。通過解析計算結果與實驗測量結果對比表明,改進漏感電動勢法計算的電流分布及環(huán)流損耗值與實驗測量值基本一致,驗證了解析法的正確性。
[Abstract]:In order to solve the problem of current and circulation loss of rotor rod in stator winding of large hydrogenerator, an analytical method, improved leakage inductive electromotive force method, is put forward in this paper. The existing leakage inductive EMF method (also called leakage inductive EMF method), which is used to calculate the current distribution and circulation loss of stator transposition wire, is not reasonable. The circuit constraints are incomplete and the actual transposition path of the strands is neglected. Each strand line in the stator bar is regarded as consisting of the wire resistance and the leakage inductive electromotive force. The calculation methods of slot leakage electromotive force and end leakage inductive electromotive force are given respectively. Taking a 140MW large hydrogenerator as an example, an improved leakage inductive electromotive force method is used to calculate the current distribution of each strand of 360 擄full and insufficient transposition. By comparing the analytical results with the experimental results, it is shown that the current distribution and circulation loss calculated by the improved leakage inductive electromotive force method are in good agreement with the experimental measurements, which verifies the correctness of the analytical method.
【作者單位】： 哈爾濱理工大學電氣與電子工程學院;
【基金】：國家自然科學基金(51477038) 黑龍江省自然科學基金(E2015061)資助項目
【分類號】：TM312

【相似文獻】

相關期刊論文 前1條

1 房純綱,葛懷光,臧瑾光;碾壓混凝土初凝時間測試新方法電動勢法[J];水利學報;2001年05期

，

本文編號：1647572